OWNER’S MANUAL
HHT25S • HHT35S
TRIMMER/
BRUSH CUTTER
Before operating the trimmer for the first time, please read this
Owner’s Manual. Even if you have operated other trimmers,
take time to become familiar with how this trimmer works and
practice in a safe area until you build up your skills.
QUICK FIND
Air Filter.................................................
Contact Honda .....................................
Cutting-Line Heads ...............................
Find a Dealer .......................................
16
29
22
29
Fuel ........................................................ 9
Fuel System Maintenance .................... 28
Maintenance Schedule.......................... 15
Oil Change ............................................ 16
Oil Level Check ......................................... 8
Spark Plug ............................................... 17
Warranty Coverage ................................. 30
CONTENTS
FOR YOUR SAFETY .............................. 2
PARTS AND CONTROLS ...................... 3
INITIAL TRIMMER SETUP ..................... 4
Importance of Proper Assembly ..........
Tools Required ....................................
List of Loose Parts...............................
Install the Handlebar (U-Type) ............
Add Engine Oil ....................................
Before Using Your Trimmer.................
4
4
4
4
6
7
BEFORE EACH OPERATION ................
Check Your Trimmer ...........................
Check Your Trimming Area .................
Equipment ...........................................
Check Your Shoulder Harness and
Trimmer Adjustment ............................
Check the Engine Oil Level .................
Add Fuel ..............................................
7
7
7
7
8
8
9
OPERATION........................................... 9
Safe Trimming Practices ..................... 9
Attachments and Modifications ......... 11
Operating the Controls ...................... 12
Starting the Engine............................ 13
Stopping the Engine .......................... 13
Trimmer Operation ............................ 14
SERVICING YOUR TRIMMER .............
Maintenance Safety...........................
Maintenance Schedule......................
Oil Change ........................................
Air Filter .............................................
Spark Plug.........................................
Spark Arrester ...................................
Cooling Fin Inspection.......................
Throttle Cable Inspection ..................
Throttle Cable Adjustment.................
15
15
15
16
16
17
18
18
18
18
CUTTING ATTACHMENTS ..................
Blades ...............................................
Debris Shields ...................................
Cutting-Line Heads............................
19
20
21
22
TRANSPORTING ................................. 24
Before Loading .................................. 24
Loading.............................................. 24
STORAGE ............................................
Fuel ...................................................
Oil ......................................................
Cleaning ............................................
Storage Location ...............................
Removing From Storage ...................
24
24
24
24
25
25
TROUBLESHOOTING..............................
Engine Will Not Start .............................
Loss of Power or Engine Speed Won’t
Increase.................................................
Cutting-Line Head Won’t Stop Turning..
Cutting-Line or Blade Head Won’t Turn
Excessive Vibration ...............................
25
25
TECHNICAL INFORMATION ...................
Serial Number Locations .......................
High Altitude Operation .........................
Emission Control System ......................
Air Index ................................................
Specifications ........................................
25
25
26
26
26
27
AVOIDING FUEL-RELATED PROBLEMS 28
CUSTOMER INFORMATION ...................
Parts, Accessories, and Service Items..
Dealer Locator Information....................
How to Contact Honda ..........................
Honda Publications ...............................
29
29
29
29
29
DISTRIBUTOR’S LIMITED WARRANTY.. 30
EMISSION SYSTEM WARRANTY ........... 31
PRODUCT REGISTRATION .................... 35
QUESTIONS?
Contact your Honda dealer.
00X31VL3 D252
25
25
25
25
There is a dealer locator at
powerequipment.honda.com
© 2014-2018 American Honda Motor Co., Inc.—All Rights Reserved
WELCOME

Congratulations on your selection of a Honda trimmer/brush cutter!
We are certain you will be pleased with your purchase of one of the
finest trimmers on the market. We want to help you get the best
results from your new trimmer and to operate it safely. This manual
contains information on how to do that; please read it carefully.
When your trimmer needs scheduled maintenance, keep in mind that
authorized Honda Power Equipment servicing dealership personnel
are specially trained in servicing Honda trimmers and are supported
by the parts and service divisions of American Honda.
Please read the DISTRIBUTOR’S LIMITED WARRANTY on page 30
and the EMISSION CONTROL SYSTEM WARRANTY on page 31 to
fully understand what is covered by warranty and your responsibilities
of ownership.
FOR YOUR SAFETY
Your safety and the safety of others are very important. We have
provided important safety messages in this manual and on the
trimmer. This information alerts you to potential hazards that could
hurt you or others. Please read these messages carefully.
Of course, it is not practical or possible to warn you about all the
hazards associated with operating or maintaining a trimmer. You must
use your own good judgment.
Safety Instructions
You will find important safety information in a variety of forms:
• Safety Labels – on the trimmer.
• Instructions – how to use this trimmer correctly and safely.
• Safety Messages – preceded by a safety alert  symbol and one
of three signal words: DANGER, WARNING, or CAUTION.
Each message tells you what the hazard is, what can happen, and
what you can do to avoid or reduce injury.
These signal words mean:

DANGER
You WILL be KILLED or
SERIOUSLY HURT if you don't
follow instructions.

WARNING
You CAN be KILLED or
SERIOUSLY HURT if you don't
follow instructions.

CAUTION
You CAN be HURT if you don't
follow instructions.
• Damage Prevention Messages – You will also see other important
messages that are preceded by the word NOTICE. This word
means:
Your trimmer, other property, or the environment can
NOTICE
be damaged if you don’t follow instructions.
2
WARNING
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or reproductive harm.
California Proposition 65
This product contains or emits
chemicals known to the State of
California to cause cancer, birth
defects, or other reproductive harm.
The Honda HHT25S and HHT35S trimmer/brush cutters are designed
to cut grass, weeds, brush, and/or wood if equipped with an
appropriate cutting attachment. Other uses can result in injury to the
operator or damage to the trimmer and other property.
These Honda trimmers are intended for use by gardening
professionals. Never allow children to operate the trimmer.
Most injuries or property damage can be prevented if you follow all
instructions in this manual and on the trimmer. The most common
hazards are discussed below, along with the best way to protect
yourself and other.
Important Message to Employers
As an employer, you have special responsibilities to the people who
work for you.
Before you ask anyone to operate this trimmer, you need to determine
whether the person is old enough, large enough, and strong enough
to safely handle and control the trimmer.
If you decide the employee is ready, make sure the employee reads
and understands all instructions and warnings in this manual and on
the labels before operating the trimmer.
Allow adequate time for hands-on training by a qualified instructor,
and personally supervise practice sessions until you feel sure the
employee is ready to operate the machine.
Also be sure employees wear proper clothing and have eye protection
and any other gear that may be required by local ordinances or your
insurance company.
Remember, too, that you are responsible for keeping the trimmer
properly maintained and in safe operating condition.
Your commitment to safety on the job can help prevent injuries and
result in longer and more productive years of service.
Safety Label Locations
These labels warn you of potential hazards that can cause serious
injury. Read them carefully. If a label comes off or becomes hard to
read, contact an authorized Honda servicing dealer for a replacement.
PARTS AND CONTROLS
Loop Type Handle
CUTTING-LINE HEAD
GEAR CASE
LOOP HANDLE AND
U-TYPE HANDLE TYPES
LOOP HANDLE
HARNESS HANGER
THROTTLE SET BUTTON
OPERATOR
PRESENCE
LEVER
DEBRIS SHIELD
WITH CUTOFF KNIFE
DRIVE CABLE
FRAME PIPE
IGNITION SWITCH
THROTTLE
TRIGGER
U-Type Handle
IGNITION SWITCH
SAW BLADE
GEAR CASE
THROTTLE
TRIGGER
THROTTLE
SET BUTTON
DRIVE CABLE
FRAME PIPE
OPERATOR
PRESENCE
LEVER
DEBRIS SHIELD
FOR BRUSH/
WOOD BLADE
U-TYPE
HANDLEBAR
HARNESS
HANGER
CHOKE LEVER
SPARK PLUG
Engine
SPARK
ARRESTER
AIR
CLEANER
COVER
STARTER
GRIP
PRIMING
BULB
FUEL RETURN
TUBE (CLEAR)
FUEL SUPPLY
TUBE (BLACK)
OIL FILLER CAP
FUEL TANK CAP
3
Ref.
No
INITIAL TRIMMER SETUP
Importance of Proper Assembly
Proper assembly is essential to operator safety and the reliability of
the machine. Any error or oversight made by the person assembling
and servicing a machine can result in faulty operation, damage to the
machine, or injury to the operator.

WARNING
Improper assembly can cause an unsafe condition that
can lead to serious injury or death.
Follow the procedures and precautions in the assembly
instructions carefully.
13
14
15
16
17
18
Tools Required
4 mm hex wrench
8 and 17 mm sockets
0 - 25 ft-lb torque wrench
List of Loose Parts
Carefully remove the trimmer and loose parts from the carton and
compare the loose parts against the following list. Contact the
authorized Honda dealer from whom you purchased the trimmer if any
of the loose parts shown are not included with your trimmer.
1
1
2
3
4
5
6
7
8
9
10
11
12
Description
U-type
handlebar
•
•
•
•
•
•
•
Owner’s Manual
Goggles
Bottle of oil
Single-strap shoulder harness
Full shoulder harness
Brush/wood debris shield
Cutting-line debris shield
Cover
10 mm lock nut
Spacer
5 x 28 mm bolt
Spacer set (A & B)
Brush/wood saw blade
(50-tooth/10 in)
Blade cover
Kwik Loader® head
Collar
Washer
Cable tie
Trimmer line
(0.095 x 8 inch long)
Qty.
•
•
•
•
•
•
•
•
1
1
1
1
1
1
1
1
1
2
4
1
•
1
•
•
•
•
•
1
1
1
1
2
•
2
Install the Handlebar (U-Type)
1. Remove the four 5 x 28 mm bolt/washers and handlebar holder A.
THROTTLE TRIGGER
5 x 28 mm
BOLT/WASHER (4)
4
2
Loop
handle
DRAFT COPY - DO NOT DISTRIBUTE
HANDLEBAR
HOLDER A
OWNER’S MANUAL
HHT25S • HHT35S
TRIMMER/
BRUSH CUTTER
INTRODUCTION
Congratulations on your selection of a Honda trimmer/brush cutter!
We are certain you will be pleased with your purchase of one of the
finest trimmer/brush cutters on the market.
OWNER’S MANUAL
HHT25S • HHT35S
Trimmer/Brush Cutter
Before operating the trimmer for the first time, please read this
Owner’s Manual. Even if you have operated other trimmers,
take time to become familiar with how this trimmer works and
practice in a safe area until you build up your skills.
We want to help you get the best results from your new trimmer/brush
cutter and to operate it safely. This manual contains the information
on how to do that; please read it carefully.
As you read this manual, you will find information preceded by a
NOTICE symbol. That information is intended to help you avoid
Fuel .......................................................... 9
Filter..................................................
17 or the
damage to yourAirtrimmer/brush
cutter, other property,
Fuel System Maintenance...................... 29
environment. Contact Honda ....................................... 30
QUICK FIND
Cutting-line Heads ................................. 22
Maintenance Schedule........................... 16
We suggest you read the Distributor’s Limited Warranty (page 30) and
Oil Change ............................................. 16
Find a Dealer ......................................... 30
the Emission Control System Warranty (page 31) to fully understand
its coverage and your responsibilities of ownership.
Oil Level Check.........................................9
Spark Plug ..............................................18
Warranty Coverage.................................31
CONTENTS
When your trimmer/brush cutter needs scheduled maintenance, keep
in mind that your Honda servicing dealer is specially trained
in
Maintenance Schedule...................... 16
FOR YOUR SAFETY .............................. 2
servicing Honda trimmers/brush cutters. Your Honda servicing
dealer........................................ 16
Oil Change
PARTS AND CONTROLS ...................... 3
is dedicated to your satisfaction, and will be pleased to answer
your
Air Filter
............................................. 17
INITIAL TRIMMER SETUP ..................... 4
questions and concerns.
Spark Plug......................................... 18
Cutting Line Head Won’t Stop Turning. 26
Cutting Line or Blade Head Won’t Turn 26
TECHNICAL INFORMATION
Serial Number Locations ...................... 26
Spark Arrester (optional part) ............ 18
High Altitude Operation ........................ 27
CUTTING ATTACHMENTS .................. 20
Emission Control System ..................... 27
The engine exhaust from this product contains
Air Index ............................................... 27
TRANSPORTING .................................
24 known
Check Your Trimming Area ................. 7
chemicals
to the State of California to cause
Specifications ....................................... 28
Your safety and the
safety ...........................................
of others are very important.
We
have
Equipment
8
Loading..............................................
cancer,24birth defects or other reproductive harm.
provided important
safety
in this
manual 9and on the
Check
the messages
Engine Oil Level
.................
FUEL SYSTEM MAINTENANCE............. 29
STORAGE
trimmer/brush cutter.
This..............................................
information alerts you to 9potential hazards
Add Fuel
CUSTOMER INFORMATION
Fuel ................................................... 25
that could hurt you
or others. Please read these messages carefully.
OPERATION
Oil ...................................................... 25
Parts, Accessories, and Service Items. 30
Safe
Trimming
10about Cleaning
TRIMMER SAFETY ........................................................................................................2
Of course, it is not
practical
or Practices
possible...................
to warn you
all the ............................................
25
Dealer Locator Information................... 30
IMPORTANT SAFETY
..................................................................2
Attachments
and Modifications
......... a
12trimmer/brush
Storage Location ...............................
25 INFORMATION
How to Contact
Honda ......................... 30
hazards associated
with operating
or maintaining
ATTACHMENTS
MODIFICATIONS.....................................................................2
Controls
...................... 12
Removing From Storage
................... &25
Honda Publications .............................. 30
cutter. You must Operating
use your the
own
good judgment.
IMPORTANT MESSAGE TO EMPLOYERS ...........................................................2
Starting the Engine............................ 13
TROUBLESHOOTING
DISTRIBUTOR’S LIMITED WARRANTY. 31
You will find important
safety information in a variety of forms:
SAFETY LABEL LOCATIONS.................................................................................3
Stopping the Engine .......................... 14
Engine Will Not Start
......................... 26
EMISSION SYSTEM
WARRANTY .......... 32
RECOMMENDED CUTTING ATTACHMENTS
..............................................................3
• Safety Labels
– on the YOUR
trimmer/brush
SERVICING
TRIMMERcutter.
Loss of Power or Engine
Speed Won’t
PRODUCT
................... 35
CUTTING-LINE
HEADS AND
SHIELDSREGISTRATION
.................................................................3
Increase.............................................
26
Maintenance
Safety...........................
• Safety Messages
– preceded
by a safety alert 15
symbol
and one
BLADES AND SHIELDS..........................................................................................4
Install the Handlebar (U-Type) ............ 5
BEFORE EACH OPERATION
SAFETY
MESSAGES
Check Your Trimmer ........................... 7
WARNING:
3
CONTENTS
of three signal words: DANGER, WARNING, or CAUTION. These
signal words mean:
CUTTING ATTACHMENT APPLICATIONS ............................................................5
ASSEMBLY.....................................................................................................................5
IMPORTANT SAFETY PRECAUTIONS..................................................................5
You WILL be KILLED or SERIOUSLY
UNPACKING ...........................................................................................................5
HURT
if you don't
follow
For more
information
about
your instructions.
LOOSE PARTS .......................................................................................................6
trimmer, visit
U-TYPE HANDLEBAR.............................................................................................6
You CAN be KILLED or SERIOUSLY
QUESTIONS?
www.powerequipment.honda.com
SAW BLADE............................................................................................................7
HURT
if youordon't
and click
on FAQs
scanfollow
the QRinstructions. Contact your Honda dealer.
ENGINE OIL ............................................................................................................8
code shown here.
CONTROLS
AND
EQUIPMENT
.....................................................................................9
is a dealer
locator
at
You CAN be HURT if you don't follow There
BEFORE OPERATION .................................................................................................11
www.powerequipment.honda.com
instructions.
© 2013 American Honda
Motor Co., Inc.
OPERATION .................................................................................................................12
All Rights Reserved
SAFE OPERATING PRECAUTIONS ....................................................................12
• Safety Headings—such as IMPORTANT SAFETY
STOPPING THE ENGINE .....................................................................................13
INFORMATION.
TRIMMER/HARNESS QUICK DISCONNECTION ................................................14
• Safety Section—such as TRIMMER SAFETY.
TRIMMER OPERATION........................................................................................14
SAFE OPERATING PRACTICES..........................................................................15
• Instructions – how to use this trimmer/brush cutter correctly and
OPERATING TIPS.................................................................................................15
safely.
SERVICING YOUR TRIMMER .....................................................................................16
This entire book is filled with important safety information—please
MAINTENANCE SAFETY......................................................................................16
MAINTENANCE SCHEDULE ................................................................................17
read it carefully.
ENGINE .................................................................................................................17
CUTTING ATTACHMENTS...................................................................................18
FUEL SYSTEM......................................................................................................24
STORAGE.....................................................................................................................25
TRANSPORTING..........................................................................................................26
TAKING CARE OF UNEXPECTED PROBLEMS .........................................................26
TECHNICAL INFORMATION........................................................................................27
EMISSION CONTROL SYSTEM...........................................................................27
SPECIFICATIONS.................................................................................................28
CONSUMER INFORMATION .......................................................................................29
© 2004-2006 American Honda Motor Co., Inc.—All Rights Reserved
DISTRIBUTOR'S LIMITED WARRANTY ..............................................................30
ACCESSORIES, REPLACEMENT PARTS, AND APPAREL WARRANTY ..........30
31VL3D10
POM53509-C
IPC
EM5
EMISSION CONTROL SYSTEM WARRANTY .....................................................31
XXXX.2006.12
00X31-VL3-D100
DANGER
10W-30
WARNING
Genuine Honda Oil
Specially formulated and
blended for Honda engines.
Meets or exceeds American
Petroleum Institute SJ
standards.
CAUTION
100 cc / 3.4 oz
PRINTED IN U.S.A.
1
ALL TYPES
LOOP HANDLE ONLY
HANDLEBAR
HOLDER B
U-TYPE ONLY
5
7
6
U-SHAPED
HANDLEBAR
8
2. Set the U-shaped handle into handlebar holder B with the throttle
trigger facing to the right.
3. Adjust the handlebar position as shown.
9
13
10
14
12
11
15
16
17
18
4
90°
4. Tighten the four 5 x 28 mm bolt/washers.
All output shafts use left-hand threads.
TORQUE: 3.6 ft-lb (5 N•m)
5. Install the two cable ties, and position them as shown below.
TIGHTEN
CUTTING-LINE HEAD
WASHER
(used with Kwik
Loader head only)
COLLAR
(left-hand
thread)
SPACER B
CABLE TIE (2)
COVER PLATE/
SPACER A
7/8 in (100 mm)
7/16 in (60 mm)
6. Operate the throttle trigger and make sure the throttle operates
smoothly.
Kwik Loader® Shield and Head Installation
Prior to installation, move the ignition switch to the STOP (O) position.
1. Install the cutting-line head debris shield as shown below.
2. Tighten the 5 x 28 mm bolt/washers:
TORQUE: 2.5 ft-lb (3.4 N•m)
5 x 28 mm
BOLT/WASHER (4)
OUTPUT SHAFT
(left-hand thread)
4 mm HEX WRENCH
(commercially available)
GEAR CASE HOLE
Brush/Wood (50-tooth) Shield and Head Installation
Prior to installation, move the ignition switch to the STOP (O) position
and disconnect the spark plug cap from the spark plug. Wear
protective gloves when working around the cutting-line head and saw
blade.
1. Install the brush/wood blade debris shield as shown below.
SPACER (2)
[3/32 in (2.3 mm) thick]
CUTTING-LINE
DEBRIS SHIELD
(with cutoff knife)
2. Tighten the 5 x 28 mm bolt/washers:
TORQUE: 2.5 ft-lb (3.4 N•m)
5 x 28 mm
BOLT/WASHER (4)
SPACER (2)
[3/32 in (2.3 mm) thick]
BRUSH/WOOD BLADE
DEBRIS SHIELD
3. Position cover plate/spacer A, spacer B, and washer on the shaft
as shown.
4. Insert the tip of a 4 mm hex wrench or equivalent fully into the gear
case hole and verify that the output shaft will not turn.
3. Insert a 4 mm hex wrench or equivalent into the gear case hole to
prevent the output shaft from turning.
5. Position the Kwik-Loader trimmer head against the washer and
thread the collar onto the shaft making sure to seat the triangular
portion of the collar in the triangular opening in the trimmer head.
6. Grasp the trimmer head and tighten it by hand in the direction
shown.
7. Remove the 4 mm hex wrench from the gear case hole.
5
4. Install cover plate/spacer A onto the output shaft as shown.
TIGHTEN
3. Turn the blade cover slowly until the post end is clear of the debris
shield, then remove the blade cover from the blade.
COVER
SPACER B
BLADE
Install with the white
markings facing the
debris shield.
10 mm LOCK NUT
(left-hand thread)
Standard on HHT35SUKAT model
Blade Cover Installation
BLADE
COVER
1. Install the blade cover over the blade so that half of the blade is
covered.
COVER PLATE/
SPACER A
To prevent the post end from interfering with the debris shield, pull
the post end away from the blade and set it on top of the blade as
shown above.
OUTPUT SHAFT
(left-hand thread)
2. Turn the blade cover slowly until the post end clears the debris
shield.
3. Reposition the post end over the blade.
4 mm HEX TOOL
5. With the blade cover installed on the blade, install the blade by
aligning the center of the blade with the shoulder on cover plate/
spacer A.
6. Install spacer B, the cover, and the 10 mm lock nut as shown.
Be sure to install the blade with the cutting edges of the saw teeth
in the direction of rotation; the side with the white markings must
face the debris shield.
The output shaft has left-hand threads. Tighten the 10 mm lock nut
counterclockwise.
TORQUE: 14 ft-lb (20 N•m)
7. Remove the 4 mm hex wrench or equivalent from the gear case.
Blade Cover Removal
1. Turn the blade cover slowly until the cover latch is clear of the
debris shield.
Unfasten the latch by lifting the tab off the post.
2. Pull the post end away from the blade and set it on top of the blade
as shown.
4. With the blade cover fully seated on the blade, latch the tab over
the post.
Add Engine Oil
The trimmer is shipped WITHOUT OIL in the engine.
Place the trimmer on a level
surface, and then remove
the oil filler cap/dipstick.
A bottle of oil is included in
the box with your trimmer.
Add the entire contents of
the oil bottle into the oil filler
opening.
OIL FILLER
All Honda engines are run at
CAP/DIPSTICK
the factory prior to
packaging. Most of the oil is
removed prior to shipment;
OIL FILLER OPENING
however, some oil remains in
the engine. The amount of oil left in the engine varies.
If not using the supplied oil, add enough recommended oil (page 16)
to bring the oil level to the bottom edge of the oil filler hole.
Do not overfill the engine with oil, as the oil tank capacity is small.
POST END
DEBRIS
SHIELD
BLADE COVER
NOTICE
Running the engine with too little or too much oil can cause engine
damage. This type of damage is not covered by the DISTRIBUTOR’S
LIMITED WARRANTY (page 30).
Screw in the oil filler cap/dipstick securely.
BLADE
Please Register Your Trimmer
Please take a few minutes and register your purchase with Honda.
You can register by completing and mailing the registration card on
the back cover of this book or going online to
powerequipment.honda.com and clicking on Product Registration.
6
Before Using Your Trimmer
Before using the trimmer, all operators must read the following
sections:
•
•
•
•
•
FOR YOUR SAFETY (page 2)
PARTS AND CONTROLS (page 3)
BEFORE EACH OPERATION (page 7)
OPERATION (page 9)
MAINTENANCE SCHEDULE (page 15)
BEFORE EACH OPERATION
Your safety is your responsibility. A little time spent in preparation will
significantly reduce your risk of injury. Read and understand this
manual. Know what the controls do and how to operate them.
Even outside a 50-foot (15-meter) radius of the trimmer, there may be
a risk of injury from thrown objects, so bystanders should be
encouraged to wear eye protection.
If anyone approaches you while you are operating the trimmer,
release the throttle trigger and stop the engine.
Equipment
The Honda HHT25S and HHT35S trimmer/brush cutters are supplied
with a shoulder harness and safety glasses. Refer to page 7 for a
description of other equipment and protective clothing you will need.
Shoulder Harness
A full shoulder harness must be worn by the operator of these Honda
trimmers/brush cutters when equipped with a blade and debris shield.
If the trimmer is equipped with a cutting-line head and shield with
cutoff knife, the operator may wear a single-strap harness.
Familiarize yourself with the trimmer and its operation before you
begin using it. Know how to quickly shut off the engine in case of an
emergency.
A suitable shoulder harness is supplied with each new Honda
HHT25S and HHT35S trimmer/brush cutter. Replacement shoulder
harnesses may be purchased through any authorized Honda
trimmer/brush cutter servicing dealer.
Check Your Trimmer
Before operation, adjust your shoulder harness as described on
page 8.
For your safety, to ensure compliance with environmental regulations,
and to maximize the service life of your trimmer, it is very important to
take a few moments before you operate the trimmer to check its
condition. Be sure to take care of any problem you find, or have your
servicing dealer correct it, before you operate the trimmer.
SINGLE-STRAP SHOULDER HARNESS
(Loop type handle)
FULL SHOULDER HARNESS
(U-type handlebar)
On blade equipped models, always remove the blade cover before
starting the engine. If the cover is not removed, the blade cover may
fly off at high speed during test operation. Reinstall the blade cover
when the trimmer is not being used.

WARNING
Improperly maintaining this trimmer, or failing to correct a
problem before operation, could cause a malfunction.
Some malfunctions can seriously hurt or kill you.
Always perform a pre-operation inspection before each
operation, and correct any problem.
•
•
•
•
•
•
Look around the engine for signs of oil or gasoline leaks
Look for signs of damage
Check the throttle cable free play (page 18)
Check that all nuts, bolts, and screws are tightened
Check the air filter (page 16) and oil level (page 8)
Check the fuel level (page 9). Starting with a full tank will help to
eliminate or reduce operating interruptions for refueling.
• If using a metal blade on a loop handle trimmer, be sure the barrier
bar (optional part) is installed beneath the loop handle
• Check that the debris shield is the correct shield for the cutting
attachment (page 21)
Check Your Trimming Area
Objects thrown by the trimmer can cause serious injury. Before
operating the trimmer, carefully inspect the area and remove all
objects that could be thrown by, or entangled in, the cutting
attachment, such as rocks, broken glass, nails, wire, or string.
Clear the area of children, bystanders, and pets. Keep all children,
bystanders, and pets at least 50 feet (15 meters) away from where the
trimmer is being operated.
QUICK-RELEASE LATCH
Quick-Release Latch
The shoulder harnesses supplied with these trimmers are equipped
with a quick-release latch.
Pull the latch tab upward to detach the trimmer from the harness.
Insert the latch tongue in the slot of the quick-release latch to reattach
the trimmer to the harness.
LATCH TAB
QUICK-RELEASE
LATCH
Safety Glasses
Safety glasses or goggles that
comply with ANSI (American National
Standards Institute) standard Z87.1
must be worn by the operator of any
Honda trimmer/brush cutter. The
safety glasses supplied with each
new Honda HHT25S and HHT35S
trimmer/brush cutter comply with this ANSI standard.
7
Check Your Shoulder Harness and
Trimmer Adjustment
Adjusting the Harness
Adjust the harness so the quick-release latch is at your right hip, as
shown.
Check the Engine Oil Level
Check the engine oil level before each use, or every 10 hours if
operated continuously. Rest the trimmer on a level surface with the
engine stopped.
1. Rest the trimmer on a level surface as shown.
2. Remove the oil filler cap/dipstick and wipe it clean.
OIL FILLER
CAP/DIPSTICK
QUICK-RELEASE
LATCH
OIL FILLER OPENING
SINGLE-STRAP
SHOULDER HARNESS
FULL SHOULDER
HARNESS
Balancing the Trimmer on the Shoulder Harness
Hang the trimmer on the harness hook, and see how it balances.
Adjust the shoulder harness, the harness hanger on the frame pipe,
and the loop handle or U-type handlebar, so the handle or handlebars
are in a comfortable operating position, and the trimmer hangs with its
cutting attachment a few inches above the ground (see page 14).
3. Insert and remove the dipstick without screwing it into the filler
opening. Check the oil level shown on the dipstick.
4. If the oil level is low, fill to the edge of the oil filler hole with the
recommended oil. Avoid overfilling or underfilling, as the oil
capacity is small. Be sure the engine is in a level position, as
shown.
OIL LEVEL
A few inches above
the ground
NOTICE
GROUND
Running the engine with a low oil level can cause engine
damage. This type of damage is not covered by the
DISTRIBUTOR’S LIMITED WARRANTY (page 30).
5. Screw in the oil filler cap/dipstick securely.
8
Add Fuel
This engine is certified to operate on regular gasoline with a pump
octane rating of 86 or higher.
Never use stale or contaminated gasoline or an oil/gasoline mixture.
Avoid getting dirt or water in the fuel tank.
You may use regular unleaded gasoline containing no more than 10%
ethanol (E10) or 5% methanol by volume. In addition, methanol must
contain cosolvents and corrosion inhibitors.
Use of fuels with content of ethanol or methanol greater than shown
above may cause starting and/or performance problems. It may also
damage metal, rubber, and plastic parts of the fuel system.
Engine damage or performance problems that result form using a fuel
with percentages of ethanol or methanol greater than shown above
are not covered under warranty.

WARNING
Gasoline is highly flammable and explosive, and you can be
burned or seriously injured when refueling.
•
•
•
•
Stop the engine and let cool before refueling.
Keep heat, sparks, and flame away.
Refuel only outdoors.
Wipe up spills immediately.
NOTICE
If your equipment will be used on an infrequent or intermittent basis,
(more than 4 weeks before next use), refer to “AVOIDING
FUEL-RELATED PROBLEMS” on page 28 for information regarding
fuel deterioration.
1. To refuel, set the trimmer on level ground and remove the fuel
tank cap.
FUEL
TANK CAP
FUEL
TANK
OPERATION
For your safety, avoid starting or operating the engine in an enclosed
area, such as a garage. Your trimmers exhaust contains poisonous
carbon monoxide gas, which can collect rapidly in an enclosed area
and cause illness or death.

WARNING
Exhaust contains poisonous carbon monoxide gas that can
build up to dangerous levels in closed areas.
Breathing carbon monoxide can cause unconsciousness or
death.
Never run the trimmer in a closed, or even partially closed
area where people may be present.
If the trimmer starts to shake or vibrate, stop the engine immediately.
After the cutting head has completely stopped, inspect it to determine
the cause of the vibration. Sudden vibration is a sign of a hazardous
problem, such as a loose or damaged blade. Do not operate the
trimmer until the problem is corrected.
Prolonged exposure to vibration may cause Hand-Arm Vibration
Syndrome (HAVS). Symptoms include loss of skin color in the hands
and numbness or a painful tingling sensation in the fingers, hands,
and arms. Regular users of any power equipment may feel the
numbness or pain spontaneously, at any time, not just after using the
equipment. If any of these symptoms occur, see a physician
immediately.
Safe Trimming Practices
Honda trimmers are designed to give safe and dependable service if
operated according to instructions and intended use.
Honda trimmers are intended to be used by an experienced, trained
operator who is familiar with the use of power equipment. Do not allow
a child or an inexperienced, untrained operator to use this trimmer.
Operating this equipment requires special effort on your part to
ensure your safety and the safety of others. Read and understand this
owner’s manual.
Always Wear Eye Protection and Protective Clothing
MAXIMUM
FUEL
LEVEL
2. Fill the tank with gasoline to the shoulder of the filler neck.
3. Refuel carefully to avoid spilling fuel. Do not overfill.
4. After refueling, tighten the fuel tank cap securely.
Never refuel the engine inside a building where gasoline fumes
may reach flames or sparks. Keep gasoline away from appliance
pilot lights, barbecues, electric appliances, power tools, etc.
Spilled fuel is not only a fire hazard, it causes environmental
damage. Wipe up spills immediately
Move the trimmer at least 10 feet (3 meters) away from the
fueling source and site before starting the engine.
NOTICE
Fuel can damage paint and plastic. Be careful not to spill fuel
when filling your fuel tank. Damage caused by spilled fuel is not
covered by the DISTRIBUTOR’S LIMITED WARRANTY
(page 30).
• The most frequent injuries associated with string trimmers are eye
injuries caused by thrown debris. Always wear safety glasses or
goggles that meet the ANSI Z87.1 rating whenever you use the
trimmer.
• The operator must wear hearing protectors when using this
trimmer. Hearing protectors will protect the operator's ears from
noise damage.
• Wearing protective clothing also reduces the risk and severity of
injury from thrown debris or contact with the cutting attachment.
Wear the trimmer harness, gloves, a long-sleeved shirt, long pants,
and sturdy boots with nonslip soles.
Keep Away From Cutting Lines and Blades
• A spinning cutting blade can cut through your clothes and skin just
as easily as it cuts through grass and dirt. Keep all parts of your
body away from a spinning cutting attachment.
• Even after the engine has stopped, the cutting attachment will spin
for several seconds. Do not touch it until it has stopped spinning, or
you may get cut.
9
Turn the Engine Off When Not Trimming
Thrown Debris
If you stop trimming or cutting for any reason, even to clean off the
cutting attachment, always shut off the engine.
The trimmer will throw debris in the direction of blade movement at
the point of contact.
Keep People Away From Your Working Area
To prevent injury to others, keep people at least 50 feet (15 meters)
away from the working area during operation.
Always Wear the Harness When Trimming
The harness keeps the trimmer away from your body, lowering your
chances of being cut by the trimmer’s blade or cutting line.
Read This Manual Before Using the Trimmer
Read the manual before operating the trimmer. Understand how to
use all the controls and obey all warnings.
Clear the Working Area First
Objects thrown by the trimmer can cause serious injury. Before
operating the trimmer, carefully inspect the area and remove any
broken glass, pieces of wire, and other loose objects.
Keep the Trimmer Properly Maintained
• The cutting attachment should be examined for looseness, cracks,
broken parts, or excessive wear. Tighten or replace as needed
before operating the trimmer.
• Do not operate the trimmer without a debris shield properly
installed. Make sure you have the right shield installed for your
cutting attachment.
Cutting Terrain
Be very careful when operating the trimmer over uneven or rough
ground, and when the ground is wet and slippery. Watch out for
hidden obstacles that could cause you to stumble. Operate the
trimmer only under conditions with good visibility. Do not operate the
trimmer where you cannot see what it is cutting.

WARNING
Rotating cutting lines can cause serious abrasions and cuts,
and blades can cut deeply.
Keep away from the cutting lines or blade whenever the engine
is running.
Always stop the engine, and be sure the cutting line head or
blade has stopped turning, before inspecting or handling the
cutting lines or blade.
The cutting line head or blade
rotates counterclockwise, as
viewed from the operator’s
position. Tilting the cutting line
head to the right will throw
debris away from you, and
tilting to the left will throw debris
toward you.
DEBRIS
In general, cut
with the right
side to throw
debris away
from you.
If the cutting line head or blade
is held parallel to the ground,
debris will scatter in all
directions and there will be greater friction, which will wear out the
cutting line or blade sooner.
When operating the trimmer near a hard surface such as a wall, work
from an angle where debris that strikes the hard surface will ricochet
away from you.
Gravel, loose stones, etc. can be picked up by the nylon cutting lines
or blade and thrown many feet with enough force to cause serious
personal injury and/or property damage. Before crossing graveled
areas, release the throttle trigger to stop the cutting line head or
blade.
Blade Thrust (Kickback)
Blade thrust (kickback) is the sudden, forceful, and uncontrolled
movement of a blade-equipped trimmer that may occur if the blade
binds while cutting or strikes a solid object.
Blade thrust (kickback)
throws the trimmer in the
direction opposite blade
rotation at the point of
contact, and the jolt
received by the operator
can result in further loss of
control.
To reduce the risk of
loosing control, use metal
BLADE
blades on trimmers
THRUST
equipped with a U-type
handlebar, or install the
barrier bar (optional part)
on trimmers equipped with a loop handle.
Replace or resharpen dull blades. Dull blades are more likely to bind
and cause blade thrust.
Watch out for hidden obstacles such as rocks, stumps, roots, etc., that
could cause the blade to kick back if struck. Blade thrust is more likely
to occur in areas where it is difficult to see what is being cut.
Understand the reaction forces of the blade. Blades on Honda
HHT25S and HHT35S trimmers rotate counterclockwise, as viewed
from the operator’s position. Therefore, the left side of the blade is
moving toward you. With these trimmers, when using a brush blade to
saw through heavy brush and small saplings, sawing with the left side
of a brush blade will give you better control and less risk of kickback,
though it will throw the sawdust toward you.
Cut from the side of saplings that will cause them to fall away from the
trimmer. This will help prevent the blade from binding in the cut and
kicking back.
Accelerate the engine to maximum speed before starting the cut, and
saw through with uniform pressure.
10
OPERATING TIPS
Operation on Slopes
Start on the low side of a slope, and work upward. This will reduce
your risk of slipping and falling, and it will give you a cutting angle that
will better enable you to direct debris away from you.
Scything Motion
Swing the trimmer in
a level arc by rotating
your body with a
smooth, easy motion,
rather then moving
the trimmer with your
arms. Do not chop at
tough weeds and
brush; let the cutting
line or blade work
through tough
growths gradually.
Do not let the cutting line or blade dig into the slope, because that can
cause stones and dirt to be thrown at you.
Do not raise the cutting attachment above waist level during
operation, because that would increase the risk of thrown objects
striking your face.
Avoid steep slopes that would require holding the cutting attachment
above waist level. Avoid slippery slopes that might cause you to lose
your balance.
Attachments and Modifications
To direct thrown debris away from you, tilt the cutting attachment to
the right side, scythe from left to right, then return without cutting.
Trimming and Edging
Use nylon line for
cutting against a hard
surface. Work from
an angle where
debris that strikes the
hard surface will
ricochet away from
you.
Modifying your trimmer/brush cutter, or installing non-Honda
attachments, can make your trimmer unsafe. Before you make any
modifications or install any attachments, be sure to read the following
information.
Attachments
DEBRIS
Your Honda trimmer servicing dealer has cutting attachments, debris
shields, barrier kits, and shoulder harnesses that have been designed
and approved for your trimmer and are covered by warranty. See
CUTTING ATTACHMENTS (page 19).
Avoid contact with
wires, wire fences,
metal rods, etc.
Overlapping a wire
will cause the nylon
line to wrap around
the wire and break off.
TRIMMING
Non-Honda attachments are usually designed for universal
applications. Although aftermarket attachments may fit on your
trimmer, they may not meet factory specifications and could make
your trimmer unsafe.
Modifications
Do not remove the debris shield or modify your trimmer in any way
that would alter its design or operation. This could make your trimmer
unsafe.
Brush Clearing
Clearing brush with a brush blade may require both scything and
sawing.
Scything with the right side of the blade will direct thrown debris away
from you.
Be especially careful to direct debris away from you if recutting an
area to shorten stumps. Short lengths of shrub and sapling stumps
may tear off and be thrown at high speed.
Sawing heavy brush and saplings with the left side of the blade will
reduce the risk of kickback.
Accelerate the engine to maximum speed before starting the cut, and
saw through with uniform pressure.
If shrubs or saplings bind the blade, stop the engine and, while
supporting the weight of the trimmer, push the shrub or sapling away
to free the blade. Do not use the blade as a lever.
SAWING
11
Operating the Controls
Throttle Trigger
The location and operation of the controls are similar on both the
HHT25S and HHT35S models.
The throttle trigger controls engine speed.
Choke Lever
The choke lever opens and closes the choke valve.
The CLOSED position enriches the fuel mixture for starting a cold
engine.
The OPEN position provides the correct fuel mixture for operation
after starting, and for restarting a warm engine.
CHOKE LEVER
Pulling the throttle trigger toward the control handle grip increases
engine speed. The trimmer will have the greatest cutting force at
maximum engine speed.
Releasing the throttle trigger reduces engine speed. At idle, the
cutting attachment should coast to a stop.
THROTTLE TRIGGER
IDLE
(cutting attachment
stops rotation)
THROTTLE
SET BUTTON
CLOSED
FAST
(cutting attachment rotates)
OPEN
OPERATOR
PRESENCE
LEVER
Throttle Set Button
The throttle set button is used to hold the throttle trigger at the fast idle
position for starting. Do not allow the cutting line or blade to contact
any obstruction when starting the engine with the throttle set button
engaged.
Ignition Switch
The ignition switch controls the ignition system.
The ignition switch must be in the ON (I) position for the engine to
start and run.
Moving the ignition switch to the STOP (O) position stops the engine.
Loop Handle:
U-type Handle:
STOP
(O)
STOP (O)
ON (I)
ON (I)
IGNITION
SWITCH
OPERATOR
PRESENCE
LEVER
To engage the throttle set button, press the operator presence lever
by gripping the control handle, pull the throttle trigger, then press and
hold the throttle set button while releasing the throttle trigger.
To disengage the throttle set button, simply pull the throttle trigger.
The throttle set button automatically disengages when the throttle
trigger is pulled.
Do not use the throttle set button while operating the trimmer. The
trimmer will not return to idle, and the cutting-line head or blade will
continue to spin until the throttle set button is disengaged and the
throttle trigger is released.
Priming Bulb
Pressing the priming bulb pumps fuel from the fuel tank to the
carburetor. This procedure is necessary for starting the engine.
IGNITION
SWITCH
OPERATOR
PRESENCE
LEVER
To ensure fuel has reached the carburetor, press the priming bulb
repeatedly until fuel can be seen in the clear plastic fuel return tube.
PRIMING
BULB
Operator Presence Lever
The operator presence lever blocks the throttle trigger. This safety
feature prevents unintentional throttle operation if the trimmer is
bumped while the operator’s hand is not on the control handle.
When the operator presses the presence lever by gripping the control
handle, the trigger moves freely.
FUEL RETURN TUBE
(clear plastic tube)
RECOIL STARTER GRIP
12
Starting the Engine
1. To start a cold engine, move the choke lever to the CLOSED
position.
To restart a warm engine, leave the choke lever in the OPEN
position.
CHOKE LEVER
7. If the choke lever was moved to the CLOSED position to start the
engine, gradually move it to the OPEN position as the engine
warms up.
Allow the engine to warm up for a few minutes after a cold start.
When the engine is warm enough to idle well, pull and release the
throttle trigger to disengage the throttle set button.
8. With the engine idling, hook the trimmer to your shoulder harness.
Be careful to avoid contact with the cutting-line head or blade while
handling the trimmer with the engine running.
QUICK-RELEASE
LATCH
CLOSED
OPEN
PRIMING
BULB
HOOK
FUEL RETURN
TUBE
(clear plastic
tube)
2. To start a cold engine, or after refueling an engine that has run out
of fuel, press the priming bulb repeatedly until fuel can be seen in
the clear plastic fuel return tube.
To restart a warm engine that has not run out of fuel, it is not
necessary to press the priming bulb.
3. Set the throttle trigger in the starting position, using the throttle set
button.
To set the throttle trigger for starting, press the operator presence
lever by gripping the control handle, pull the throttle trigger, then
press and hold the throttle set button while releasing the throttle
trigger.
IGNITION SWITCH
ON (I)
THROTTLE
TRIGGER
THROTTLE
SET BUTTON
OPERATOR
PRESENCE
LEVER
The cutting-line head or blade should not rotate with the engine
idling. If there is rotation at idle, adjust the idle speed correctly
before using the trimmer. For idle adjustment, consult your
authorized Honda servicing dealer.
Stopping the Engine
1. Release the throttle
trigger.
THROTTLE
TRIGGER
2. Move the ignition
switch to the STOP
(O) position.
STOP (O)
IGNITION
SWITCH
Wait for the cutting
line head or blade to
stop before allowing
the end of the trimmer to contact anything.

WARNING
The blade will continue to spin briefly after the engine has
stopped or the throttle trigger is released.
4. Move the ignition switch to the ON (I) position.
A coasting blade can cause injury.
5. Set the trimmer on the ground, resting on the debris shield and the
fuel tank guard. Do not allow the cutting-line or blade to contact
any obstruction.
Maintain proper control of the trimmer until the blade has
completely stopped rotating.
Always rest the trimmer on the ground
for starting, rather than holding it in the
operating position. This prevents the
end of the trimmer from swinging into
something as you start the engine.
6. With your left hand, hold the frame
pipe just ahead of the engine. With
your right hand, pull the starter grip
lightly until you feel resistance, then
pull briskly. Return the starter grip
gently.
13
Harness Quick Disconnect
Using a Nylon Cutting-Line Head
To quickly detach the trimmer from the harness, pull the quick-release
latch tab upward.
As the ends of the line wear away, more line must be released from
the cutting-line head. Your trimmer is factory-equipped with either a
Kwik Loader or a semi-matic (bump feed) cutting-line head, which
have different procedures for releasing line.
LATCH TAB
The debris shield is equipped with a cutoff knife that automatically
removes any excess line that is released.
Kwik Loader Cutting-Line Head
Always shut the engine off when adding trimmer line to the Kwik
Loader head.
QUICK-RELEASE
LATCH
To load, push the 8-inch trimmer line into the housing so there is
1/4 inch (6 mm) exposed in the inner housing radius. Do this for both
sides.
Insert the latch tongue in the slot of the quick-release latch to reattach
the trimmer to the harness.
The line will only move in one direction. Pull the trimmer line through
the inner housing to unload.
Trimmer Operation
HOUSING
Operating Position
Hold the trimmer firmly with both hands, with your fingers and thumbs
encircling the handles as shown. This will help you to keep the
trimmer under control at all times.
• Keep firm footing and
balance.
ALLOWABLE LINE DIAMETERS:
0.095 ~ 0.155 INCH
LINE
(push to load)
1/4 inch min.
(6 mm)
• Do not overreach.
• Keep the cutting
attachment below waist
level.
1/4 inch min.
(6 mm)
Semi-Matic (bump-feed) Cutting-Line Head
Line must be released with the cutting-line head spinning rapidly.
• Keep all parts of your
body away from the
rotating cutting
attachment and hot
surfaces.
With the engine running at full speed, tap the cutting-line head on
hard, bare ground. Do not tap the cutting-line head on pavement or
concrete.
Each tap releases about 2 inches of line.
SPOOL
Throttle Operation
Pull the throttle trigger toward the grip to increase engine speed and
start the cutting attachment rotation.
The trimmer has the greatest cutting force at maximum engine speed.
Release the throttle trigger to reduce engine speed. At idle, the cutting
attachment should coast to a stop.
HOUSING
Using Blades
Refer to the chart on page 19 for appropriate blade applications.
If using a blade on a Honda trimmer equipped with a loop handle, also
install the optional Honda barrier kit (page 29) that includes a full
shoulder harness, a barrier bar, and debris shields for blades. Follow
the installation instructions and safety information that come with the
kit.
THROTTLE
TRIGGER
Metal blades supplied with U-type handlebar models are supplied with
a cover surrounding the edge of the blade. For your safety, and to
protect the blade, the cover should be installed whenever the trimmer
is not in use.
Be sure to remove the blade cover before starting the engine.
Otherwise, the blade cover may fly off at high speed.
IDLE
(cutting attachment stops)
14
FAST
(cutting attachment rotates)
• If the trimmer starts to vibrate after the blade strikes an object, stop
the engine immediately and check the blade for damage. A
damaged blade may break, and pieces of broken blade can become
dangerous projectiles. Replace the blade if it is broken, cracked,
bent, or damaged in any way.
SERVICING YOUR TRIMMER
gasoline, to clean parts. Keep cigarettes, sparks, and flames away
from all fuel-related parts.
Maintenance Schedule
Proper maintenance is essential for safe, economical, and
trouble-free operation. It also helps reduce air pollution.
Interval 1

WARNING
Improper maintenance, or failure to correct a problem before
operation, can cause a significant malfunction.
Before each
use
Some malfunctions can seriously hurt or kill you.
Always follow the inspection and maintenance
recommendations and schedules in this owner’s manual.
To help you properly care for your trimmer, the following pages
include a maintenance schedule, routine inspection procedures, and
simple maintenance procedures using basic hand tools. Other service
tasks that are more difficult, or require special tools, are best handled
by professionals and are normally performed by a Honda technician
or other qualified mechanic.
The maintenance schedule applies to normal operating conditions. If
you operate your trimmer under severe conditions, such as sustained
high-load or high-temperature operation, or use in unusually wet or
dusty conditions, consult your servicing dealer for recommendations
applicable to your individual needs and use.
Remember that an authorized Honda servicing dealer knows your
trimmer best and is fully equipped to maintain and repair it.
To ensure the best quality and reliability, use only new, Honda
Genuine parts or their equivalents for repair and replacement.
Maintenance, replacement, or repair of the emission control
devices and systems may be performed by any engine repair
establishment or individual, using parts that are “certified” to
EPA standards.
First month or
10 hours

WARNING
Improper maintenance can cause an unsafe condition.
Failure to properly follow maintenance instructions and
precautions can cause you to be seriously hurt or killed.
Always follow the procedures and precautions in this manual.
Page
Check the engine oil
Check the air cleaner
Check the throttle cable
Check the debris shield
Inspect the cutting attachment
Check the shoulder harness quick
release
Check/tighten nuts, bolts, and
fasteners
page 8
page 16
page 18
page 21
page 22
Change the engine oil
page 16
page 8
Every 3 months Clean the air filter element 2
or 25 hours
page 16
Every 6 months Change the engine oil 2
or 50 hours
Clean the air filter element 2
Check/lubricate the drive cable 3
Lubricate the gear case 3
Check the clutch shoes and drum 3
Check the engine cooling fins
page 16
page 16
Every year or
100 hours
Items for 50 hours plus the following:
Check/adjust the spark plug
Check the spark arrester
Check the fuel filter
Clean the fuel tank
Check/adjust the idle speed 3
Check/adjust the valve clearance 3
Every 2 years
or 300 hours
Items for 100 hours plus the following:
Replace the spark plug
Every 2 years
Check the fuel tubes and replace if
necessary 3
Check the oil tube and replace if
necessary 3
Maintenance Safety
Some of the most important safety precautions follow. However, we
cannot warn you of every conceivable hazard that can arise in
performing maintenance. Only you can decide whether or not you
should perform a given task.
Item
page 17
page 18
page 19
page 19
page 17
1. Log the hours of operation to determine the proper maintenance
interval.
2. Service more frequently when used in dusty areas.
Safety Precautions
• Make sure the engine is off before you begin any maintenance or
repairs. This will eliminate several potential hazards:
– Carbon monoxide poisoning from engine exhaust.
Be sure there is adequate ventilation whenever you operate
the engine.
– Burns from hot parts.
Let the engine and exhaust system cool before touching.
– Injury from moving parts.
Do not run the engine unless instructed to do so.
• Read the instructions before you begin, and make sure you have
the tools and skills required.
• To reduce the possibility of fire or explosion, be careful when
working around gasoline. Use only a nonflammable solvent, not
3. These items should be serviced by an authorized Honda servicing
dealer unless you have the proper tools and are mechanically
proficient. Refer to the Honda shop manual for service procedures.
See Honda Publications on page 29 for ordering information.
Failure to follow this maintenance schedule could result in
non-warrantable failure.
15
Oil Change
Air Filter
Change the oil after the first 10 hours of use. Thereafter, change the
oil every 6 months or 50 hours of use. Change the oil more often
when used in dusty areas.
Drain the used oil while the engine is warm. Warm oil drains quickly
and completely.
1. Place a suitable container below the engine to catch the used oil.
2. Remove the oil filler cap/dipstick.
3. Tip the trimmer to drain the used oil through the oil filler opening.
Allow the used oil to drain completely.
Check the air filter after each use. Thereafter, clean the filter every 25
hours of use. Clean the filter more often when used in dusty areas.
Replace the filter every 2 years or 150 hours of use.
A properly maintained air filter will help prevent dirt from entering your
engine. Dirt entering the carburetor can be drawn into small passages
in the carburetor and cause premature engine wear. These small
passages can become blocked, causing starting or running problems.
We recommend the use of a Honda Genuine air filter to ensure it
seals and performs as designed. Using a non-Honda air filter can
result in dirt bypassing the filter, causing damage to the engine or fuel
system.
NOTICE
Operating the engine without an air filter, or with a dry or damaged air
filter, or with an improperly installed air filter cover will allow dirt to
enter the engine causing rapid engine wear. Make sure the air filter is
properly installed and flush with the air filter base before installing the
air filter cover. This type of damage is not covered by the
DISTRIBUTOR’S LIMITED WARRANTY (page 30).
FILLER
OPENING
Inspection
1. Move the choke lever to the CLOSED () position to prevent dirt
from entering the engine.
2. Squeeze together the upper tabs at the top of the air filter cover
to release it from its catch, then flip the cover down to remove it.
Please dispose of used motor oil in a manner that is compatible
with the environment. We suggest you take used oil in a sealed
container to your local recycling center or service station for
reclamation. Do not throw it in the trash, pour it on the ground, or
pour it down a drain.
4. With the engine in an upright position, fill with the recommended
oil to the edge of the oil filler hole. Do not overfill.
Refill amount: HHT25S, 2.7 fl oz (80 cc)
HHT35S, 3.4 fl oz (100 cc)
5. Screw in the filler cap/dipstick securely.
FILTER
AIR CLEANER
COVER
Engine Oil Recommendations
Oil is a major factor affecting performance and service life. Always
change the oil in accordance with the MAINTENANCE SCHEDULE
(page 15).
LATCH
TAB
RETAINING TABS
3. Check the foam air filter to be sure it is clean, properly oiled, and
in good condition.
5W-30
OUTSIDE AIR TEMPERATURE
SAE 10W-30 is recommended for general use. Other viscosities
shown in the chart may be used when the average temperature in
your area is within the recommended range.
The SAE oil viscosity and service category are in the API label on the
oil container. Honda recommends that you use API service category
SJ or later oil.
NOTICE
Using nondetergent oil can shorten the engine's service life, and using
2-stroke oil can damage the engine.
16
4. If the filter is dirty, clean it as described under Cleaning on
page 17. Replace the air filter element if it is damaged.
5. Align the air filter with the air filter base. Reinstall the air filter by
locating the three base pegs into the three air filter holes. Slide
the air filter over the pegs until it is flush with the air filter base.
6. Reinstall the air filter cover by hooking the two lower tabs on the
bottom of the cover and snapping the upper tabs into place.
Spark Plug
Cleaning
A dirty air filter will restrict air flow to the carburetor, reducing engine
performance. If you operate the trimmer in very dusty areas, clean the
air filter more often than specified in the MAINTENANCE SCHEDULE
(page 15).
Honda Air Filter Oil can be used instead of
clean engine oil and is available from your
authorized Honda dealer (page 29).
Check the spark plug every year or 100 hours of use. Replace the
spark plug every 2 years or after 300 hours of use.
Required Spark Plug: NGK - CMR5H
NOTICE
An incorrect spark plug can cause engine damage.
1. Use a 4 mm Allen wrench to loosen the 5 x 12 mm hex bolt and
remove the fan cover.
1. Remove the foam air filter from the air
filter base.
2. Clean the filter in warm soapy water and
rinse, or clean with nonflammable
solvent.
5/32 in (4 mm)
HEX WRENCH
(commercially available)
3. Squeeze excess water from the filter and
allow it to dry thoroughly.
5 x 12 mm
HEX BOLT
4. Place the filter in a resealable plastic bag
and pour about 1 oz. of clean engine oil
into the bag. Seal the bag closed and
knead the bag until the oil is completely
distributed into the foam filter. Squeeze
excess oil from the filter.
SPARK PLUG
SPARK PLUG
CAP
TOP
COVER
5. Remove the filter from the bag.
NOTICE
Operating the engine with a dry air filter
will allow dust to enter the engine causing
engine damage. The air filter must be
oiled after cleaning.
6. Wipe dirt from the air filter base and cover
using a moist rag. Be careful to prevent
dirt from entering the carburetor.
7. Reinstall the foam air filter and air filter
cover.
E
IN
ir
aA
nd Oil
Ho lter
i
F
G
EN
O
IL
2. Disconnect the spark plug cap, and remove any dirt from around
the spark plug area.
3. Remove the spark plug with a 5/8-inch spark plug wrench.
4. Inspect the spark plug.
Replace it if the
electrodes are worn, or if
the insulator is cracked
or chipped.
SPARK PLUG CAP
SPARK PLUG
5. Measure the spark plug
electrode gap with a
suitable gauge.
GAP: 0.024 ~ 0.028 in
(0.60 ~ 0.70 mm)
Correct the gap, if
necessary, by carefully
bending the side
electrode.
6. Install the spark plug
carefully, by hand, to avoid
cross-threading.
7. After the spark plug seats, tighten
with a 5/8-inch spark plug wrench
to compress the washer.
If reinstalling the used spark plug,
tighten 1/8 ~ 1/4 turn after the
spark plug seats.
0.024 ~ 0.028 in
(0.60 ~ 0.70 mm)
SEALING
WASHER
If installing a new spark plug, tighten 1/2 turn after the spark plug
seats.
TORQUE: 8.8 ft-lb (12 N•m)
NOTICE
A loose spark plug can overheat and damage the engine.
Overtightening the spark plug can damage the threads in the
cylinder head.
8. Attach the spark plug cap.
9. Install the fan cover and 5 x 12 mm hex bolt and tighten securely.
17
Spark Arrester
Cooling Fin Inspection
The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
Inspect the engine
cooling fins every 50
hours of operation. You
should clean out any
dirt and debris if air is
obstructed from flowing
across the cooling fins.
Your trimmer engine is factory-equipped with a spark arrester. In
some areas, it is illegal to operate an engine without a spark arrester.
Check local laws and regulations.
If the engine has been running, the muffler will be very hot. Allow the
muffler to cool before servicing the spark arrester.
1. Remove the 5 x 12 mm hex bolt and top cover.
5/32 in (4 mm) HEX WRENCH
(commercially available)
5 x 12 mm
HEX BOLT
TOP COVER
COOLING
FINS
1. Loosen the 5 mm
hex bolt, then
remove the fan
cover.
2. Remove all dirt
and debris from
the cooling fins.
3. Install the fan
cover, and tighten the 5 mm hex bolt securely.
Throttle Cable Inspection
MUFFLER
Verify the throttle trigger operates smoothly, releases properly, and
the throttle cable is undamaged. If there is visible damage, or if the
throttle lever does not operate smoothly or release properly, take your
trimmer to your authorized Honda servicing dealer.
Check the freeplay at the end of the throttle lever.
If adjustment is needed, see the Throttle Cable Adjustment procedure
below.
2. Remove the two 4 x 6 mm self-tapping screws from the spark
arrester, and remove the spark arrester from the muffler.
SPARK
ARRESTER
Throttle Cable Adjustment
1. Loosen the
locknut with a
10 mm wrench,
and move the
adjuster in or out
as required.
Throttle Lever
Freeplay:
1/16 ~ 1/8 in
(1.0 ~ 3.0 mm)
4 x 6 mm
SELF-TAPPING
SCREWS
MUFFLER
3. Use a brush to remove carbon deposits from the spark arrester
screen. Be careful to avoid damaging the screen.
The spark arrester must be free of breaks and holes. Replace the
spark arrester if it is damaged.
4. Install the spark arrester, top cover, and 5 x 12 mm hex bolt and
tighten securely.
CABLE END
FREE PLAY
1/16 ~ 1/8 in
(1.0 ~ 3.0 mm)
2. Tighten the
locknut and
recheck throttle
lever freeplay.
Carburetor
Adjustment
LOCK NUT
A tachometer is
required to adjust the
ADJUSTING
NUT
idle speed. If you do
not have one, take
your trimmer to an
authorized Honda servicing dealer to perform idle speed adjustment.
1. Start the engine outdoors, and allow it to warm up to normal
operating temperature.
2. Turn the throttle stop screw to obtain a stable idle, below the
speed at which the trimmer head begins to turn.
Standard Idle Speed: 3,100 ± 200 rpm
18
Fuel Tube Inspection
Check the fuel supply and return tubes, and replace any tube that is
damaged, cracked, or leaking. Also check the priming bulb for cracks,
discoloration or leaks.
Refer to the Honda shop manual for tube replacement instructions, or
take the trimmer to an authorized Honda servicing dealer.
Fuel Filter and Fuel Tank Cleaning
CUTTING ATTACHMENTS
Applications
ATTACHMENTS FOR TRIMMING GRASS AND LIGHT WEEDS
1. Remove the fuel tank cap.
2. Tip the trimmer and empty the fuel tank into an approved gasoline
container. Use a funnel to avoid spilling gasoline.
3. Pull the fuel filter out through
the fuel filler neck by hooking
the black fuel supply tube
with a piece of wire, such as
a partly straightened paper
clip.
4. Inspect the fuel filter. If the
fuel filter is dirty, wash it with
nonflammable solvent. Be
careful to avoid damaging
the filter.
FUEL
SUPPLY
TUBE (black)
WIRE
FUEL
FILTER
ATTACHMENTS FOR CUTTING THICK WEEDS AND LIGHT
BRUSH
5. Replace the filter if it is
damaged or excessively
dirty.
6. Rinse sediment from the fuel
tank with nonflammable
solvent.
7. Insert the fuel filter in the fuel
tank, and install the fuel tank
cap.
ATTACHMENTS FOR CUTTING WOODY BRUSH, SHRUBS,
SAPLINGS
Your Honda trimmer servicing dealer has cutting attachments that
have been designed and approved for your trimmer and are covered
by warranty. Non-Honda attachments are usually designed for
universal applications. Although aftermarket attachments may fit on
your trimmer, they may not meet factory specifications and could
make your trimmer unsafe.
19
Blades
A dull blade can be sharpened, but a blade that is worn out, bent,
cracked, chipped, or otherwise damaged must be replaced.
If installing a metal blade on a Honda trimmer equipped with a loop
handle, also install the optional Barrier Kit that includes a full
shoulder harness, a barrier bar, and two different debris shields for
metal blades. Follow the safety information and installation
instructions that come with the kit.
Grass/Weed Blades
When a blade needs sharping or replacement, take the trimmer to a
Honda trimmer servicing dealer. Or, if you have a torque wrench, you
can remove and install a blade yourself.
Blade Removal and Installation
Always wear gloves and install the blade cover on the blade when
working around the blade.
Grass/weed blades, which may be
plastic or metal, are used as an
alternative to nylon monofilament line
for cutting grass and ordinary weeds.
A torque wrench is required to install the blade. If you do not have a
torque wrench, have a Honda trimmer servicing dealer tighten the
blade lock nut for you before using the trimmer.
However, blades should never be used
for edging against solid surfaces.
If the blade lock nut is tightened too much, the output shaft can break.
If the blade lock nut is not tightened enough, the blade could come off.
In either case, it would be possible for the blade to fly off while you are
operating the trimmer.
Weed/Brush Blades
These metal blades have
chisel-shaped teeth that are used for
cutting through field grass, thick weeds,
and light brush. They are not designed
for sawing woody material. The teeth
must be sharp for good results.
The blade lock nut is specially designed for this application. When
replacing the lock nut, use only a Honda Genuine replacement lock
nut.
BLADE SHARPENING: To avoid weakening the blade or causing
imbalance or poor cutting, the blade should be sharpened by trained
staff at a Honda trimmer servicing dealer.
Brush/Wood Blades
BLADE REPLACEMENT: Your Honda trimmer servicing dealer has
cutting attachments that have been designed and approved for your
trimmer and are covered by a warranty. Non-Honda attachments are
usually designed for universal applications. Although aftermarket
attachments may fit on your trimmer, they may not meet factory
specifications and could make your trimmer unsafe.
These metal saw-tooth blades are used
for sawing through saplings, shrubs
and woody brush. The teeth must be
sharp for good results. Brush/wood
blades will also cut grass and weeds,
but they are not efficient for that
purpose.
1. Install the protective plastic cover that came with the blade (U-type
brush/wood blade only).
Blade Cover
2. Insert a commercially available 4 mm hex tool or equivalent fully
into the gear case hole.
Use the blade cover to protect yourself
from injury while installing or removing
the blade and to protect the blade from
damage during storage.
LOOSEN
TIGHTEN
Blade Inspection
COVER
Always wear gloves when working
around the blade. Before each use,
check the blade for wear and damage,
and check the tightness of the blade lock nut. Examine the entire
head area, including the debris shield, and clear or clean it free from
dirt, debris, loose string, wire, or any other foreign materials.
SPACER B
10 mm LOCK NUT
(left-hand thread)
COVER PLATE/
SPACER A
BLADE
NORMAL
WORN
BLADE
COVER
BENT

CRACKED
WARNING
A worn, damaged or cracked blade can break, and pieces
of the damaged blade can become dangerous projectiles.
A dull blade is more likely to snag and thrust (kickback).
Inspect the blade regularly, and do not operate the trimmer
with a dull, worn, or damaged blade.
20
4 mm HEX
TOOL
OUTPUT SHAFT
(left-hand thread)
3. Turn the blade until you feel the tool drop into the hole in cover
plate/spacer A. Verify the blade does not turn. The output shaft and
blade lock nut have a left-hand thread. Make sure the tool remains
in the hole, then loosen the blade nut as shown. Pay attention to
the order and orientation of the parts as they are removed.
4. Installation is the reverse of removal. Make sure you install the
blade with the cutting edges in the direction of rotation (page 23).
Be sure to align the hole in the blade with the shoulder on cover
plate/ spacer A. Tighten the blade nut to the specified torque.
TORQUE: 15 ft-lb (20 N•m)
Debris Shields
Changing the Debris Shield
Always use the correct debris shield when operating the trimmer. In
addition to safety concerns, it can cause an overload to the clutch due
to excessive line length. Clutch failure due to running the trimmer
without a shield installed is not covered under warranty.
Refer to the applicable illustration for removing and installing the
debris shields. Tighten the spacer bolts/washers to the specified
torque.
A variety of blades are available from your Honda trimmer servicing
dealer. Always use the debris shield designed for use with a blade
when attaching a blade to your trimmer. The blade type debris shield
does not have a cutoff knife.
Inspect the shield for excessive wear, damage, or looseness before
each use. If the shield is damaged, it must be replaced.
DEBRIS SHIELDS
TORQUE: 2.5 ft-lb (3.4 N•m)
5 x 28 mm
BOLT/WASHER (4)
SPACER (2)
[3/32" (2.30 mm)
thick]
ATTACHMENTS
CUTOFF KNIFE
CUTTING-LINE
DEBRIS SHIELD
(with cutoff knife)
CUTTING-LINE *
Always install
shield and cutter
to prevent clutch
overload.
* Standard on all types.
3 - 8 TOOTH **
GRASS/WEED
BLADE, WEED/
BRUSH BLADE
Maximum blade
diameter:
HHT25 = 9 inch
HHT35 = 10 inch
** Optional on all types.
Also included with optional barrier kit for SLTAT.
22 - 80 TOOTH ***
BRUSH/WOOD
SAW BLADE
5 x 28 mm
BOLT/WASHER (4)
SPACER (2)
[3/32" (2.3 mm) thick]
BRUSH/WOOD
BLADE DEBRIS
SHIELD
Maximum blade
diameter:
HHT25 = 9 inch
HHT35 = 10 inch
*** Standard on SUKAT.
Also included with optional barrier kit for SLTAT.
.
21
Cutting-Line Heads
Kwik Loader Cutting-Line Head
All Honda trimmers come with either a Kwik Loader or semi-matic
cutting head. Read this section to learn how to inspect, install new
line, and remove and install a cutting head from the trimmer.
Always shut the engine off before adding trimmer line to the head. To
load, push the 8-inch trimmer line into the housing so there is 1/4 inch
(6 mm) exposed in the inner housing radius. Do this for both sides.
The line will only move in one direction. Pull the trimmer line through
the inner housing to unload.
A cutting-line head containing nylon monofilament line and a debris
shield with a cutoff knife is standard equipment. The shield’s cutoff
knife automatically removes any excess line that is released from the
cutting head.
The U-type handlebar trimmers are supplied with two different debris
shields. Use the debris shield with the cutoff knife when the
cutting-line head is installed.
HOUSING
LINE
(push to load)
Nylon monofilament line is suitable for cutting grass and ordinary
weeds, but not brush and woody growth.
CUTTING-LINE HEAD
1/4 inch min.
(6 mm)
NYLON MONOFILAMENT LINE
1/4 inch min.
(6 mm)
Semi-Matic (Bump-Feed) Cutting-Line Head
Line is released from the cutting head by bumping the spool on hard
ground while the head is spinning. Do not tap the cutting-line head on
pavement or concrete.
SPOOL
CUTOFF KNIFE
(inside the debris shield)
CUTTING-LINE HEAD
DEBRIS SHIELD
Inspection
Make sure the nylon line is only sticking out of the metal eyelets on
the head. If any of the line has come off the spool, follow the Installing
Replacement Nylon Line instructions in this section to disassemble
the spool and replace the line.
Examine the entire head area, including the debris shield, and clear or
clean it free from dirt, debris, loose string, wire, or any other foreign
materials.
For the Kwik Loader head, make sure the three-sided knob is
correctly tightened (page 23). For the semi-matic head, verify the
spool is locked in place (page 23). For both head styles, check for any
cracks in the plastic and replace any damaged parts.
HOUSING
1. Clean any mud, dirt, debris, etc., from around the trimmer head
area; otherwise, it will be more difficult to service.
2. Locate the half-round locking hole on the spool.
SPOOL
Installing Replacement Nylon Line
First, determine which cutting-line head style is on your trimmer.
A Kwik Loader head uses two 8 inch long line segments, while the
semi-matic head has a spring-loaded round button on the bottom of
the head which automatically extends the line during use when
bumped on the ground.
Do not use any kind of metal, wire, or wire rope line on the trimmer.
Use only Honda Genuine replacement nylon trimmer line or
equivalent.
Honda trimmers come standard with low noise line. Using non-Honda
line may result in increased noise levels.
For original, factory-installed Honda cutting-line heads, use only nylon
monofilament line in the line sizes shown below.
HHT25S
HHT35S
0.095 in
(semi-matic)
(Kwik Loader)
0.095 or 0.105 in
0.095 to 0.130 in x 8 in long
See page 29 for replacement parts information.
22
HALF-ROUND
LOCKING HOLE
3. It may be necessary to lightly rotate the spool in the direction of the
arrow about an 1/8 turn until the spool stops.
4. Hold the housing securely, then continue to rotate the spool in the
direction of the arrow an additional 1/4 inch or the width of the
channel to unlock the spool from the housing.
If you are not sure if the lines have snapped out of the notches,
gently pull the spool away from the housing about an 1/8 inch to
inspect the lines. If necessary, gently pull each line until your hear
it snap out of the notch.
OUTER
DRIVE
CHANNEL (2)
CHANNEL
ROUND LUG (2)
HOUSING
5. Lift the spool out of the housing and remove any remaining line
from the spool.
6. Measure approximately 20 feet (6 meters) of new line, then thread
one end through the hole in the ridge on the spool.
METAL
EYELET (2)
11.Hold the housing and rotate the spool in the direction of the arrow
to lock the round lug into the half-round locking hole. Trim the lines
so they are equal length.
Pull the line until the two lengths are equal.
SPOOL
HALF-ROUND
LOCKING HOLE
NYLON LINE
7. Wind both lines tightly and evenly from side to side ignoring the
ridge. Feed the line while turning the spool in the direction of the
arrow. Do not allow the line to get twisted.
It is important to prevent the two
lines from getting twisting over
each other. Position a finger
between the lines as you turn the
spool to prevent the lines from
twisting.
Removal and Installation
This section shows you how to remove and install either style trimmer
head from your trimmer.
1. Insert the tip of a 4 mm hex wrench, or equivalent, fully into the
gear case hole.
2. Turn the trimmer cutting-line head until you feel the tool drop into
the hole in the cover plate/spacer A. Verify the trimmer head does
not turn.
3. All output shafts use left-hand threads. Make sure the tool remains
in the hole, then grasp the trimmer head and turn in the direction of
the arrow to remove.
REMOVAL
DIRECTION
8. When you have about 6
inches (150 mm) of line
remaining, press the
lines into the two notches
on the bottom of the
spool. This will hold the
lines on the spool for
reassembly.
9. Feed both line ends
through the metal eyelets
in the housing.
TRIMMER
HEAD
NOTCHES
It may be necessary to push down and rotate the outer drive until
the round lugs align with the metal eyelets.
10.Align the channels in the spool with the round lugs on the outer
drive. With the channels and notches aligned with the metal
eyelets, slide the spool into the housing with a continuous snap-in
motion. Be careful not to let the line slip under the spool. When the
spool reaches the bottom of the housing, the lines should snap out
of the spool notches.
4 mm HEX WRENCH
(commercially available)
GEAR CASE HOLE
4. Remove spacer B and cover plate/spacer A from the output shaft
(page 20). Note the order and orientation of each part as you
remove them.
5. Installation is the reverse of removal. Always clean debris, dirt,
loose line, etc. from the trimmer head and output shaft area before
installation. Tighten the trimmer head securely.
23
TRANSPORTING
Before Loading
If the engine has been running, allow it to cool for at least 15 minutes
before loading the trimmer on the transport vehicle. A hot engine and
exhaust system can burn you and can ignite some materials.
1. Turn the engine switch to the OFF position.
Draining the Fuel Tank and Carburetor

WARNING
Gasoline is highly flammable and explosive, and you can be
burned or seriously injured when handling fuel.
•
•
•
•
Stop the engine and let cool before handling fuel.
Keep heat, sparks, and flame away.
Refuel only outdoors.
Wipe up spills immediately.
2. Make sure the fuel cap is securely tightened.
3. Install the wheels in the transport position for greater ground
clearance and ease of movement.
Loading
The trimmer may be
secured by suitable
clamps, hangers or
straps. Secure the
trimmer by at least two
points along the frame
pipe. Avoid securing the
trimmer by the engine,
cutting head/gear case or
handle area. The trimmer
should be secured in a
horizontal position, with
the engine upright as
shown.
Don't hang the trimmer by the gear case or cutting head, or they may
be damaged.
STORAGE
Proper storage preparation is essential for keeping your trimmer
trouble free and looking good. To help keep rust and corrosion from
impairing your trimmers function and appearance, and to make the
engine easier to start after storage, follow the instructions described in
this section to:
•
•
•
•
Drain or treat the fuel
Change the oil and coat the engine cylinder
Clean the trimmer and engine
Choose a storage location
Fuel
See “AVOIDING FUEL-RELATED PROBLEMS” on page 28 for a list of
recommended procedures to avoid fuel related problems.
The DISTRIBUTOR’S LIMITED WARRANTY (page 30) does not
cover fuel system damage or engine performance problems resulting
from neglected storage preparation.
Disconnect the spark plug cap. Make sure the ignition switch is in the
STOP position.
Drain fuel from the tank into an approved container. Press the primer
bulb several times to draw any fuel out of the carburetor back to the
fuel tank, and then drain this fuel from the tank.
Oil
Change the engine oil (see page 16).
Add oil in the engine cylinder to prevent rust.
1. Remove the spark plug (page 17).
2. Pour a 1/4 teaspoon (1 cc) of clean engine oil into the cylinder to
keep it from rusting.
3. Pull the starter rope several times to distribute the oil in the
cylinder.
4. Reinstall the spark plug.
5. Pull the starter rope slowly until resistance is felt, and then return
the starter grip gently. This will close the valves so moisture
cannot enter the engine cylinder.
Cleaning
1. Disconnect the spark plug cap from the spark plug.
1. Wash the trimmer, including the area around the trimmer head.
2. Wash the engine by hand, and be careful to prevent water from
entering the air cleaner.
NOTICE
Using a garden hose or pressure washing equipment can force
water into the air cleaner. Water in the air cleaner will soak the
filter and can enter the carburetor or engine, causing damage.
3. Water on a hot engine can cause damage. If the engine has been
running, allow it to cool for at least 1/2 hour before washing.
4. If using a garden hose or pressure washing equipment to clean the
trimmer, be careful to avoid getting water into controls and cables,
or anywhere near the engine air cleaner or muffler opening.
5. After washing the trimmer, wipe dry all accessible surfaces.
6. Reconnect the spark plug cap and start the engine outdoors. Let it
run until it reaches normal operating temperature to evaporate any
water remaining on the engine. Stop the engine and allow it to
cool.
7. After the trimmer is clean and dry, touch up any damaged paint,
and coat other areas that may rust with a light film of oil.
24
Storage Location
Cutting-Line Head Won’t Stop Turning
If your trimmer will be stored with gasoline in the fuel tank and
carburetor, it is important to reduce the hazard of gasoline vapor
ignition. Select a well-ventilated dry storage area away from any
appliance that operates with a flame, such as a furnace, water heater,
or clothes dryer. Also avoid any area with a spark-producing electric
motor, or where power tools are operated.
With the engine and exhaust system cool, cover the trimmer to keep
out dust. A hot engine and exhaust system can ignite or melt some
materials. Do not use sheet plastic as a dust cover. A nonporous
cover will trap moisture around the trimmer, promoting rust and
corrosion.
Fault in the throttle control or
cable; throttle cable out of
adjustment or bent.
Correction
Take the trimmer to an authorized
Honda dealer for repair.
Idle speed is too fast.
Broken or worn clutch
springs, or faulty clutch
system.
Cutting-Line or Blade Head Won’t Turn
Possible Cause
Removing From Storage
Check your trimmer as described in BEFORE OPERATION (page 7).
If the fuel was drained during storage preparation, fill the tank with
fresh gasoline. If you keep a container of gasoline for refueling, be
sure that it contains only fresh gasoline. Gasoline oxidizes and
deteriorates over time, causing hard starting.
If the cylinder was coated with oil during storage preparation, the
engine may smoke briefly at startup. This is normal.
TROUBLESHOOTING
Engine Will Not Start
Possible Cause
Possible Cause
Correction
Ignition switch is in the STOP
() position.
Turn the ignition switch ON ().
Choke is not in the CLOSED
() position (cold engine).
Move the choke to the CLOSED
() position.
Out of fuel.
Add fuel and press the priming bulb
Bad fuel, trimmer stored
without treating or draining
gasoline.
Drain the fuel tank and carburetor,
refuel with fresh gasoline.
Spark plug is faulty, fouled,
or has incorrect gap.
Gap or replace the spark plug.
Worn or broken clutch,
broken drive cable, worn or
broken gear case parts.
Correction
Take the trimmer to an authorized
Honda dealer for repair.
Excessive Vibration
Possible Cause
Correction
Loose cutting-line head or
blade nut.
Tighten the cutting-line head or
blade nut securely.
Cutting-line has unequal line
lengths.
Rewind the cutting-line and cut to
equal lengths.
Damaged blade.
Replace the blade.
TECHNICAL INFORMATION
Serial Number Locations
ENGINE
SERIAL
NUMBER
Fuel filter clogged, carburetor Take the trimmer to an authorized
malfunction, ignition
Honda dealer for repair.
malfunction, valves stuck, etc
Loss of Power or Engine Speed Won’t
Increase
Possible Cause
FRAME SERIAL NUMBER
Correction
Air filter is dirty or clogged.
Clean or replace the air filter.
Fuel filter is dirty or clogged.
Replace the fuel filter.
Throttle cable is out of
adjustment, broken, or bent.
Adjust the cable or replace it if
necessary (page 18).
Spark arrester clogged.
Clean the screen.
Grass is wrapped around the
output shaft and/or cutting
attachment.
Move the ignition switch to the
STOP () position and disconnect
the spark plug cap from the spark
plug. Remove grass from the
output shaft and cutting area.
There are two serial numbers, one for the engine and one for the
frame. Record the engine and frame serial numbers in the space
below. You will need these serial numbers when ordering parts and
when making technical or warranty inquiries.
Engine serial number: _________________________________
Frame serial number: __________________________________
Date of purchase: _____________________________________
25
High Altitude Operation
Problems That May Affect Emissions
At high Altitudes, the standard carburetor air-fuel mixture will be too
rich. Performance will decrease, and fuel consumption will increase. A
very rich mixture will also foul the spark plug and cause hard starting.
Operation at an Altitude that differs from that at which this engine was
certified, for extended periods of time, may increase emissions.
If you are aware of any of the following symptoms, have your engine
inspected and repaired by your servicing dealer.
High altitude performance can be improved by specific modifications
to the carburetor. If you always operate your trimmer at altitudes
above 5,000 feet (1,500 meters), have your servicing dealer perform
this carburetor modification. This engine, when operated at high
altitude with the carburetor modifications for high altitude use, will
meet each emission standard throughout its useful life.
Even with carburetor modification, engine horsepower will decrease
about 3.5% for each 1,000-foot (300-meter) increase in altitude. The
effect of altitude on horsepower will be greater than this if no
carburetor modification is made.
NOTICE
When the carburetor has been modified for high altitude operation,
the air-fuel mixture will be too lean for low altitude use. Operation at
altitudes below 5,000 feet (1,500 meters) with a modified carburetor
may cause the engine to overheat and result in serious engine
damage. For use at low altitudes, have your servicing dealer return
the carburetor to original factory specifications.
Emission Control System
Source of Emissions
The combustion process produces carbon monoxide, oxides of
nitrogen, and hydrocarbons. Control of hydrocarbons and oxides of
nitrogen is very important because, under certain conditions, they
react to form photochemical smog when subjected to sunlight. Carbon
monoxide does not react in the same way, but it is toxic.
Honda utilizes appropriate air/fuel ratios and other emissions control
systems to reduce the emissions of carbon monoxide, oxides of
nitrogen, and hydrocarbons. Additionally, Honda fuel systems utilize
components and control technologies to reduce evaporative
emissions.
U.S. EPA and CARB
U.S EPA and California emissions regulations require all
manufacturers to furnish written instructions describing the operation
and maintenance of emissions control systems.
•
•
•
•
Hard starting or stalling after starting
Rough idle
Misfiring, backfiring under load, or afterburning
Black exhaust smoke or high fuel consumption
Replacement Parts
The emissions control systems on your new Honda engine were
designed, built, and certified to conform with EPA and California
emissions regulations. We recommend the use of Honda Genuine
parts whenever you have maintenance done. These original-design
replacement parts are manufactured to the same standards as the
original parts, so you can be confident of their performance. The use
of replacement parts that are not of the original design and quality
may impair the effectiveness of your emissions control system.
A manufacturer of an aftermarket part assumes the responsibility that
the part will not adversely affect emissions performance. The
manufacturer or rebuilder of the part must certify that use of the part
will not result in a failure of the engine to comply with emissions
regulations.
Maintenance
Follow the MAINTENANCE SCHEDULE on page 15. Remember this
schedule is based on the assumption that your machine will be used
for its designed purpose. Sustained high-load or high-temperature
operation, or use in unusually wet or dusty conditions, will require
more frequent service.
Air Index
An Air Index Information hang tag/label is applied to engines certified
to an emission durability time period in accordance with the
requirements of the California Air Resources Board.
The bar graph is intended to provide you, our customer, the ability to
compare the emissions performance of available engines. The lower
the Air Index, the less pollution.
The durability description is intended to provide you with information
relating the engine’s emission durability period. The descriptive term
indicates the useful life period for the engine’s emission control
system. See your EMISSION SYSTEM WARRANTY (page 31) for
additional information.
Descriptive Term
Applicable to Emissions
Durability Period
The following instructions and procedures must be followed in order to
keep the emissions from your Honda engine within the emissions
standards.
Moderate
50 hours (0 ~ 80 cc)
125 hours (greater than 80 cc)
Tampering and Altering
Intermediate
125 hours (0 ~ 80 cc)
250 hours (greater than 80 cc)
Extended
300 hours (0 ~ 80 cc)
500 hours (greater than 80 cc)
1000 hours (225 cc and greater)
NOTICE
Tampering is a violation of federal and California law.
Tampering with or altering the emissions control system may increase
emissions beyond the legal limit. Among those acts that constitute
tampering are:
• Removal or alteration of any part of the intake, fuel, or exhaust
systems.
• Altering or defeating the speed-adjusting mechanism to cause the
engine to operate outside its design parameters.
26
Specifications
Frame
Model
Features
HHT25SLTAT
HHT35SLTAT
•
•
Loop handle
HHT35SUKAT
U-type
handlebar
•
Kwik Loader
head
optional
optional
•
Manual feed
head
optional
optional
optional
Semi-matic
feed head
•
•
optional
Saw blade
optional 1
optional 1
•
1
GX25
Ignition switch
Slide type
Throttle control
Two-motion trigger style
Frame
pipe
OD
1.0 in (25.4 mm)
Thickness
0.059 in (1.5 mm)
Drive
type
Material
Flexible steel cable
OD
0.25 in (6.3 mm)
Engagement
Material
Nylon
Length
57.5 in (1460 mm)
Gear
case
Ratio
1.24: 1 (input: output shaft)
Type
Ball bearings, helical cut gears,
no shims required
Clutch
Size
2.18 in (55.2 mm)
Engagement
Handle
Installed
Length
Loop
U-type
Width
Loop
U-type
Height
Loop
U-type
Dry
weight*
Loop
U-type
HHT25S
HHT35S
73.4 in (1865 mm)
73.8 in (1875 mm)
n/a
75.0 in (1905 mm)
12.8 in (325 mm)
12.8 in (325 mm)
n/a
23.6 in (600 mm)
9.6 in (245 mm)
10.2 in (260 mm)
n/a
15.9 in (405 mm)
13.0 lb (5.6 kg)
14.8 lb (6.7 kg)
n/a
15.4 lb (7.0 kg)
GX25
1.5 cu in (25.0 cc)
2.2 cu in (35.8 cc)
Bore & stroke
1.4 x 1.0 in
(35 x 26 mm)
1.5 x 1.2 in
(39 x 30 mm)
Ignition system
Transistorized magneto
Starting system
Recoil
Fuel
Unleaded gasoline (86 octane or higher)
Fuel tank capacity
0.15 gal
(19.6 fl oz, 0.58 L)
0.17 gal
(21.3 fl oz, 0.63 L)
2.7 fl oz (80 cc)
3.4 fl oz (100 cc)
Carburetor type
Type
Centrifugal
Maintenance
Item
Description
Fuel
Unleaded gasoline with a
pump octane rating of 86
or higher
See page 9
Engine oil
SAE 10W-30
API SJ or later
See page 6
Spark plug type
NGK– CMR5H
See page 17
2,900 ~ 3,300 rpm
Shop manual
Standard idle
speed
Page
Description
Spark plug gap
0.024 ~ 0.028 in
(0.60 ~ 0.70 mm)
Valve clearance
(cold)
Intake:
0.0024 ~ 0.0039 in
(0.060 ~ 0.100 mm)
Exhaust:
0.0035 ~ 0.0051 in
(0.090 ~ 0.130 mm)
Other
specifications
Page
See page 17
See your
authorized
Honda
servicing
dealer
No other adjustments needed
Diaphragm type (overflow return)
with fuel pump
Air cleaner
Single element, semi-dry
Idle speed
3,100 ± 200 rpm
Noise
Square female
GX35
4-stroke, overhead-cam, single-cylinder
Displacement
Oil capacity
4,200 ± 200 rpm
Drive
Item
Engine
Engine type
3.09 in (78.4 mm)
Tune-up
* Excludes cutting head
Model
0.20 in (5 mm)
square drive both ends
Drive
bushing
Requires optional Barrier Kit
Dimensions
GX35
94.8 dBA @ 8000 rpm
27
AVOIDING FUEL-RELATED PROBLEMS
When maintained properly, your Honda trimmer should provide years of trouble-free operation. This includes the fuel system. However,
gasoline can quickly deteriorate, causing starting or running problems and, in some cases, damage to the fuel system. Most fuel-related
problems can be avoided by following the precautions listed below. Fuel system damage and engine performance problems resulting from
deteriorated fuel are not covered by the Distributor’s Limited Warranty (see page 30).
Follow These Precautions to Prevent Most Fuel-Related Problems
During The Normal Trimming Season
Reason
Do not use gasoline containing more than 10% ethanol.
A high level of ethanol in gasoline attracts water and can corrode
or damage the fuel system and cause performance problems.
Store gasoline in a clean, plastic, sealed container approved for
fuel storage.
A clean plastic container will prevent rust and metallic
contaminants from entering the fuel system.
Store your fuel supply container away from direct sunlight; if the
container has a vent, keep it closed.
Gasoline will deteriorate faster when exposed to air and sunlight.
Purchase only enough gasoline to last for 30 to 60 days.
Gasoline deteriorates with age, so try to avoid storing it for long
periods, especially in summer heat.
If you purchase enough gasoline to last for more than 60 days,
add a fuel stabilizer to your storage tank when you fill it.
When you finish trimming, completely fill the trimmer’s fuel tank.
3 to 4 Weeks Before Next Use
Completely fill the trimmer’s fuel tank.
1 to 3 Months Before Next Use
Fuel stabilizer will extend the shelf life of gasoline, but it will not
reconstitute stale fuel.
If the fuel tank is only partially filled, air in the tank will promote
fuel deterioration.
Reason
If the fuel tank is only partially filled, air in the tank will promote
fuel deterioration.
Reason
If you did not add fuel stabilizer to your fuel storage tank when
you filled it up, fill your trimmer’s fuel tank with fresh gasoline.
If the fuel tank is only partially filled, air in the tank will promote
fuel deterioration.
Add fuel stabilizer to the trimmer’s tank according to the stabilizer
manufacturer’s instructions.
Fuel stabilizer will extend the life of gasoline, but it will not
reconstitute stale gasoline.
Run the engine outdoors for 10 minutes.
To make sure treated gasoline has replaced untreated gasoline
throughout the fuel system.
More Than 3 Months Before Next Use
Drain the fuel tank into an approved container and then run the
engine until the engine stops. Do not allow gasoline to remain in
your trimmer for more than 3 months of inactivity.
Reason
All fuel stabilizers have a shelf life. It is good practice to empty
the fuel system for long term inactivity.
We recommend Pro Honda Fuel Stabilizer, that has improved formulation with added corrosion protection (page 29).
28
CUSTOMER INFORMATION
Dealer Locator Information
To find an Authorized Honda Servicing Dealer anywhere in the United
States:
Parts, Accessories, and Service Items
Visit powerequipment.honda.com and click on Find a Dealer.
Contact an authorized Honda servicing dealer to purchase any of
these (or other) Honda Genuine Service parts and other approved
accessories for your trimmer. For a complete list of trimmer
accessories, visit us at powerequipment.honda.com and click on
TRIMMERS.
How to Contact Honda
Replacement Parts
Item
Spark plug
Part Number
31915-Z0H-003
Air filter
17211-Z0H-000
HHT25S
17211-Z0Z-000
Cutting-line
72512-095-0285Q
72581-VF9-09548
72581-VF9-10548
72581-VF9-13048
0.095" spool
3 lb (855 ft)
0.095" doughnut
1 lb (285 ft)
0.095 in. 50-pack
0.105 in. 50-pack
0.130 in. 30-pack
Accessories
Item
Part Number
Honda air filter
oil (MOTUL)
08207-MTL-100
Barrier kit
06631-VH8-740
Notes
4 oz bottle
Use with saw blade (loop
handle models only)
Kwik Loader
Head
06725-VL3-D60
2-line standard on U-Type
Semi-Matic
Head
72560-VH8-642AH
Standard on Loop Handle
Type
HHT25S blades 72511-VF9-A02
72511-VF9-E00AH
HHT35S blades 72511-VF9-B02
Debris shields
3 tooth, 9” grass/weed
22 tooth, 9” weed/brush
3 tooth, 10” grass/weed
72511-VF9-B00AH
4 tooth, 10” grass/weed
72511-VF9-D61
50 tooth, 10” weed/brush
72511-VF9-F00AH
80 tooth, brush/wood
76247-VF9-D60
Use with 22 ~ 80 tooth saw
blade only
76247-VF9-E31
Use with 3 ~ 8 tooth grass/
weed/brush blade only
Service Items
Item
If you are dissatisfied with the decision made by the dealership's
management, contact the Honda Power Equipment Customer
Relations Office. You can write:
HHT35S
72512-095-0855Q
Kwik Loader,
8-inch pre-cut,
square cutting-line
Notes
NGK CMR5H
Honda Power Equipment dealership personnel are trained
professionals. They should be able to answer any question you may
have. If you encounter a problem that your dealer does not solve to
your satisfaction, please discuss it with the dealership's management.
The Service Manager or General Manager can help. Almost all
problems are solved in this way.
American Honda Motor Co., Inc.
Power Equipment Division
Customer Relations Office
4900 Marconi Drive
Alpharetta, GA 30005-8847
Or telephone: (770) 497-6400
M-F, 8:30 a.m. - 7:00 p.m. ET
When you write or call, please give us this information:
•
•
•
•
•
•
Model and serial numbers (page 25)
Name of the dealer who sold the trimmer to you
Name and address of the dealer who services your trimmer
Date of purchase
Your name, address, and telephone number
A detailed description of the problem
Honda Publications
These publications will give you information for maintaining and
repairing your trimmer.
Owner’s Manual
Keep this owner’s manual handy so you can refer to it at any time.
Consider this owner’s manual a permanent part of the trimmer; please
give it to the new owner if you resell the trimmer.
The information and specifications included in this publication were in
effect at the time of approval for printing. American Honda Motor Co.,
Inc. reserves the right, however, to discontinue or change
specifications or design at any time without notice and without
incurring any obligation whatever. No part of this publication may be
reproduced without written permission.
Shop Manual
This manual covers complete maintenance and overhaul procedures.
It is intended to be used by a skilled technician. Available through
your Honda dealer or visit powerequipment.honda.com and click on
Shop Manuals.
Parts Catalog
Part Number
Notes
SAE 10W-30
engine oil
08207-10W30
Honda Genuine
recommended oil 1 qt.
Fuel
stabilizer
08732-0800
For long term storage
8 oz.
This manual provides complete, illustrated parts lists, and is available
through your Honda dealer.
Frequently Asked Questions
The Honda Power Equipment web site provides
additional information for users of Honda power
equipment. Visit powerequipment.honda.com and
click on FAQs or scan the QR code shown.
29
DISTRIBUTOR’S LIMITED WARRANTY
Honda Power Equipment
This warranty is limited to the following Honda Power Equipment products when
distributed by American Honda Motor Co., Inc., Power Equipment Division, 4900 Marconi
Drive, Alpharetta, Georgia 30005-8847, purchased at retail or placed in rental service on
or after January 1, 2010.
LENGTH OF WARRANTY
(from date of original retail purchase)
PRODUCTS COVERED
BY THIS WARRANTY
PRIVATE
RESIDENTIAL(1)
COMMERCIAL/
RENTAL/
INSTITUTIONAL
24 months
12 months
HHT25S, HHT35S (2).
Some states do not allow limitations on how long an implied warranty lasts and/or
do not allow the exclusion or limitation of incidental or consequential damages, so
the above exclusions and limitations may not apply to you. This warranty gives you
specific legal rights, and you may also have other rights which vary from state to
state.
Honda Parts, Accessories, and Apparel
This warranty is limited to Honda Power Equipment parts, accessories, and apparel when
distributed by American Honda Motor Co., Inc., 4900 Marconi Drive, Alpharetta, Georgia
30005-8847.
PRODUCTS COVERED
BY THIS WARRANTY
LENGTH OF WARRANTY
(from date of original retail purchase)
PRIVATE
RESIDENTIAL
COMMERCIAL/
RENTAL/
INSTITUTIONAL
3 months
(1) Private residential: Used in maintaining owner’s primary and/or secondary residence.
Any other use, including but not limited to informal “for hire” use, is considered
commercial/rental/institutional use.
(2) Drive cable limited lifetime warranty is valid for the original purchaser only.
Parts
6 months
Accessories
12 months
3 months
To Qualify for This Warranty:
Apparel
6 months
3 months
The product must be purchased in the United States, Puerto Rico, or the U.S. Virgin
Islands from American Honda or a dealer authorized by American Honda to sell
those products. This warranty applies to first retail purchaser and each subsequent
owner during the applicable warranty time period, unless noted otherwise.
What American Honda Will Repair or Replace Under Warranty:
American Honda will repair or replace, at its option, any part that is proven to be
defective in material or workmanship under normal use during the applicable
warranty time period. Warranty repairs and replacements will be made without
charge for parts or labor. Anything replaced under warranty becomes the property of
American Honda Motor Co., Inc. All parts replaced under warranty will be
considered as part of the original product, and any warranty on those parts will
expire coincident with the original product warranty.
To Obtain Warranty Service:
You must, at your expense, take the Honda Power Equipment product, accessory,
replacement part, apparel, or the power equipment on which the
accessory or replacement part is installed, and proof of purchase to any Honda
Power Equipment dealer in the United States, Puerto Rico, or the
U.S. Virgin Islands who is authorized to sell and/or service that product, during the
dealer’s normal business hours. To locate a dealer near you, visit
our web site at PowerEquipment.Honda.com and click on Find a Dealer.
If you are unable to obtain warranty service or are dissatisfied with the warranty
service you receive, contact the owner of the dealership involved;
normally this will resolve the problem. However, if you should require further
assistance, write or call the Power Equipment Customer Relations Department of
American Honda Motor Co., Inc. See “How to Contact Honda” on page 29.
Exclusions:
1. Any damage or deterioration resulting from the following:
- Neglect of the periodic maintenance as specified in this manual
- Improper repair or maintenance
- Operating methods other than those indicated in this product owner’s manual
- Increasing engine speed beyond factory specification
- The use of non-genuine Honda parts, accessories, lubricants, and fluids other
than those approved by Honda
- Exposure of the product to soot and smoke, chemical agents, bird droppings,
sea water, salt, or other corrosive environments.
- Collision, fuel contamination or deterioration, neglect, unauthorized alteration,
misuse, incorporation or use of unsuitable attachments or parts
- Normal wear and tear (including, but not limited to, normal fading of painted or
plated surfaces, sheet peeling, and other natural deterioration)
2. Consumable parts: Honda does not warrant parts deterioration due to normal
wear and tear. The following parts are not covered by warranty (unless they are
needed as a part of another warranted repair): spark plug, fuel filter, air cleaner
element, clutch disc, tire, wheel bearing, recoil starter rope, cable, belt, cutter
blade, oil, and grease.
3. Cleaning, adjustment, and normal periodic maintenance work (carburetor
cleaning, engine oil draining, blade sharpening, belt and cable adjustments).
4. Any product that has ever been declared a total loss or sold for salvage by a
financial institution or insurer.
5. Auger and paddle assemblies of snow throwers, tiller tines of roto-tillers, mower
blades and mower deck housings, are specifically not warranted against impact
damage, including but not limited to, abrasive damage.
Disclaimer of Consequential Damage and Limitation of Implied
Warranties:
American Honda disclaims any responsibility for loss of time or use of the product,
transportation, commercial loss, or any other incidental or consequential damage.
Any implied warranties are limited to the duration of this written limited warranty.
30
To Qualify for This Warranty:
1. The parts, accessories, or apparel must be purchased from American Honda or
a dealer authorized by American Honda to sell those products in the United
States, Puerto Rico, and the U.S. Virgin Islands. Parts and Accessories must be
purchased for installation on original Honda equipment or engines to be eligible
for warranty coverage. Installing parts and accessories on non-Honda products
or engines voids this warranty.
2. You must be the first retail purchaser. This warranty is not transferable to
subsequent owners.
What American Honda Will Repair or Replace Under Warranty:
American Honda will repair or replace, at its option, any Honda Power Equipment
parts, accessories, replacement parts, or apparel that are proven to be defective in
material or workmanship under normal use during the applicable warranty time
period. Anything replaced under warranty becomes the property of American Honda
Motor Co., Inc. The warranty on all parts, accessories, and apparel replaced under
warranty will expire coincident with the original warranty on the replaced parts,
accessories, or apparel.
Parts and accessories installed by a dealer who is authorized by American Honda to
sell them will be repaired or replaced under warranty without charge for parts or
labor. If installed by anyone else, parts and accessories will be repaired or replaced
under warranty without charge for parts, but any labor charges will be the
responsibility of the purchaser.
Apparel will be repaired or replaced under warranty without any charge.
To Obtain Warranty Service:
You must, at your expense, take the Honda Power Equipment part, accessory,
apparel or the Honda Power Equipment on which the part or accessory is installed,
and proof of purchase to any Honda Power Equipment dealer in the United States,
Puerto Rico, or the U.S. Virgin Islands who is authorized to sell that product, during
the dealer's normal business hours. To locate a dealer near you, visit our web site at
PowerEquipment.Honda.com and click on Find a Dealer.
If you are unable to obtain warranty service or are dissatisfied with the warranty
service you receive, contact the owner of the dealership involved; normally this will
resolve the problem. However, if you should require further assistance, write or call
the Power Equipment Customer Relations Department of American Honda Motor
Co., Inc. See “How to Contact Honda” on page 29.
Exclusions:
This warranty does not extend to parts, accessories, or apparel affected or
damaged by collision, normal wear, use in an application for which the product was
not designed or any other misuse, neglect, incorporation or use of unsuitable
attachments or parts, unauthorized alteration, improper installation, or any causes
other than defects in material or workmanship of the product. Installing parts and
accessories on non-Honda products or engines voids this warranty.
Disclaimer of Consequential Damage and Limitation of Implied
Warranties:
American Honda disclaims any responsibility for loss of time or use of the product,
or the power equipment on which the product is installed, transportation,
commercial loss, or any other incidental or consequential damage. Any implied
warranties are limited to the duration of this written warranty. Some states do not
allow limitations on how long an implied warranty lasts and/or do not allow the
exclusion or limitation of incidental or consequential damages, so the above
exclusions and limitations may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights
which vary from state to state.
PWL50623-V
EMISSION SYSTEM WARRANTY
Your new Honda Power Equipment engine complies with the U.S. EPA and
State of California (models certified for sale in California only) emission
regulations. American Honda Motor Co., Inc. provides the emission warranty
coverage for engines in the United States and its territories. In the remainder of
this Emission Control System Warranty, American Honda Motor Co., Inc., will
be referred to as Honda.
YOUR WARRANTY RIGHTS AND OBLIGATIONS:
CALIFORNIA
The California Air Resources Board and Honda are pleased to explain the
emission control system warranty on your 2018 and later Honda Power
Equipment engine. In California, new spark-ignited small off-road equipment
engines must be designed, built, and equipped to meet the state's stringent
anti-smog standards. Specific Honda products that do not meet the California
emissions regulations can be identified by a “Not for sale in California” decal.
OTHER STATES AND U.S. TERRITORIES
In other areas of the United States, your engine must be designed, built, and
equipped to meet the U.S. EPA emission standards for spark-ignited engines
at or below 19 kilowatts.
ALL OF THE UNITED STATES
Honda must warrant the emission control system on your power equipment
engine for the period of time listed below, provided there has been no abuse,
neglect, or improper maintenance of your power equipment engine. Where a
warrantable condition exists, Honda will repair your power equipment engine at
no cost to you including diagnosis, parts, and labor.
Your emission control system may include such parts as the carburetor or fuel
injection system, the ignition system, and catalytic converter. Also included
may be hoses, connectors, and other emission-related assemblies (see the
adjacent column for additional covered parts).
OWNER'S WARRANTY RESPONSIBILITY:
As the power equipment engine owner, you are responsible for completing all
required maintenance listed in your owner's manual. Honda recommends that
you retain all receipts covering maintenance on your power equipment engine,
but Honda cannot deny warranty coverage solely for the lack of receipts or for
your failure to ensure that all scheduled maintenance has been completed.
As the power equipment engine owner, you should however be aware Honda
may deny you warranty coverage if your power equipment engine or a part has
failed due to abuse, neglect, improper maintenance, or unapproved
modifications.
You are responsible for presenting your power equipment engine to a Honda
Power Equipment dealer as soon as a problem exists. The emission related
warranty repairs should be completed in a reasonable amount of time, not to
exceed 30 days.
If you have any questions regarding your emission warranty rights and
responsibilities, you should contact the Honda office in your region:
American Honda Motor Co., Inc.
Power Equipment Customer Relations
4900 Marconi Drive
Alpharetta, Georgia 30005-8847
Telephone: (888) 888-3139
Email: powerequipmentemissions@ahm.honda.com
Honda cannot deny coverage under the emission warranty solely for use of
non-Honda replacement parts or service performed at a location other than an
authorized Honda dealership; however, use of a part that is not functionally
identical to the original equipment part in any respect that may in any way
affect emissions (including durability) could result in denial of coverage. If such
a non-Honda replacement part is used in the repair or maintenance of your
engine, and an authorized Honda dealer determines it is defective or causes a
failure of a warranted part, your claim for repair of your engine may be denied.
If the part in question is not related to the reason your engine requires repair,
your claim will not be denied.
TO OBTAIN WARRANTY SERVICE:
You must, at your own expense, take your Honda Power Equipment engine or
the product on which it is installed, along with your sales registration card or
other proof of original purchase date, to any Honda Power Equipment dealer
who is authorized by Honda to sell and service that Honda product during their
normal business hours. Claims for repair or adjustment found to be caused
solely by defects in material or workmanship will not be denied because the
engine was not properly maintained and used.
If you are unable to obtain emission warranty service or are dissatisfied with
the warranty service you received, contact the owner of the dealership
involved. Normally this should resolve your problem. However, if you require
further assistance, contact the Honda office in your region. Refer to adjacent
column for contact information.
EXCLUSIONS:
Failures other than those resulting from defects in material or workmanship are
not covered by this warranty. This warranty does not extend to emission control
systems or parts that are affected or damaged by owner abuse, neglect,
improper maintenance, misuse, misfueling, improper storage, collision, the
incorporation of, or use of, unsuitable attachments, or the unauthorized
alteration of any part.
This warranty does not cover replacement of expendable maintenance items
made in connection with required maintenance service after the item’s first
scheduled replacement as listed in the maintenance section of the product
owner’s manual, such as: spark plugs and filters.
DISCLAIMER OF CONSEQUENTIAL DAMAGE AND LIMITATION
OF IMPLIED WARRANTIES:
American Honda Motor Co., Inc. disclaims any responsibility for incidental or
consequential damages such as loss of time or the use of the power
equipment, or any commercial loss due to the failure of the equipment; and
any implied warranties are limited to the duration of this written warranty. This
warranty is applicable only where the California and U.S. EPA emission control
system warranty regulation is in effect.
SYSTEMS COVERED
BY THIS WARRANTY:
Fuel Metering
Evaporative
WARRANTY COVERAGE:
Honda power equipment engines sold in the United States are covered by this
warranty for a period of two years from the date of delivery to the original retail
purchaser or the length of the Honda Distributor’s Limited Warranty, whichever
is longer. This warranty is transferable to each subsequent purchaser for the
duration of the warranty period.
If any emission-related part on your engine is defective, the part will be repaired
or replaced by Honda without charge for diagnosis, parts, or labor. All defective
parts replaced under this warranty become the property of Honda. Only Honda
approved replacement parts may be used in the performance of any warranty
repairs and must be provided without charge to the owner. A list of warranted
parts is on the adjacent column of this warranty statement. Normal maintenance
items, such as spark plugs and filters, that are on the warranted parts list are
warranted up to their required replacement interval only.
Honda will also replace other engine components damaged by a failure of any
warranted part during the warranty period.
Exhaust
Air Induction
PARTS
DESCRIPTION:
Carburetor assembly, (includes starting enrichment
system), Oxygen sensor, Throttle body, Engine
temperature sensor, Engine control module, Fuel
regulator, Intake manifold
Fuel tank, Fuel cap, Fuel hoses, Vapor hoses,
Carbon canister, Canister mounting brackets,
Fuel strainer, Fuel valve, Fuel pump, Fuel hose joint,
Canister purge hose joint
Catalyst, Exhaust pipe, Muffler (with catalyst)
Air cleaner case, Air cleaner element*
Ignition
Flywheel magneto, Flywheel comp., Ignition
pulse generator, Crankshaft position sensor, Power
coil, Ignition coil assembly, Ignition control module,
Spark plug cap, Spark plug*
Crankcase Emission
Control
Crankcase breather tube, Breather valve assembly,
Oil filler cap
Miscellaneous Parts
Tubing, fittings, seals, gaskets, and clamps
associated with these listed systems.
Note: This list applies to parts supplied by Honda and does not cover parts
supplied by the equipment manufacturer. Please see the original
equipment manufacturer’s emissions warranty for non-Honda parts.
* Covered up to the first required replacement only. See the MAINTENANCE
SCHEDULE on page 15.
PWL50975-S
31
NOTES
32
NOTES
33
NOTES
34
PRODUCT REGISTRATION
Thank you for choosing Honda. To ensure you receive important service information in the event
of a product update or recall, please register your trimmer within 30 days of purchase.
From time to time, American Honda conducts sales promotions that require you to register your
trimmer within 30 days of purchase. If you purchased your Honda trimmer during one
of these promotions, you must register your trimmer within 30 days.
Your information will remain confidential. It will not be released to any other company or organization.
Failure to register your trimmer does not diminish your warranty rights.
Please complete and mail the postage paid card or
register online at powerequipment.honda.com
MODEL: XXXX XXXX
SERIAL NO: XXXX-XXXXXXX
American Honda Motor Company, Inc.
Alpharetta, GA 30005-8847
Print the serial number here.
* Dealer Store number
Serial number
* Dealer ZIP code
*If available
Owner's Last Name
First Name
Company Name (commercial/rental users)
Telephone
(
)
Address
City
y
State
ZIP Code
E-mail address
Purchased Via (check one)
Date of Purchase
In Store
MONTH
Application (check one)
DAY
Online
YEAR
Commercial
(professional use)
Non-commercial
(private, homeowner use)
Rental
(for-hire use)
1. Go to www.PowerEquipment.Honda.com to register your unit.
2. Click on Product Registration.
3. Complete the required information and click Submit.
It’s that simple!
NO POSTAGE
NECESSARY
IF MAILED
IN THE
UNITED STATES
Product Registration
BUSINESS REPLY MAIL
FIRST-CLASS MAIL
PERMIT NO. 117
ALPHARETTA GA
POSTAGE WILL BE PAID BY ADDRESSEE
Power Equipment Division
American Honda Motor Co. Inc.
4900 Marconi Dr
Alpharetta GA 30005-9956
EM5
HPE.2017.12
PRINTED IN U.S.A.
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