Honda HHT25S Owner's Manual

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
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
damage to your trimmer/brush cutter, other property, or the
environment.
We suggest you read the Distributor’s Limited Warranty (page 30) and
the Emission Control System Warranty (page 31) to fully understand
its coverage and your responsibilities of ownership.
When your trimmer/brush cutter needs scheduled maintenance, keep
in mind that your Honda servicing dealer is specially trained in
servicing Honda trimmers/brush cutters. Your Honda servicing dealer
is dedicated to your satisfaction, and will be pleased to answer your
questions and concerns.
SAFETY MESSAGES
Your safety and the safety of others are very important. We have
provided important safety messages in this manual and on the
trimmer/brush cutter. 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/brush
cutter. You must use your own good judgment.
You will find important safety information in a variety of forms:
• Safety Labels – on the trimmer/brush cutter.
• Safety Messages – preceded by a safety alert  symbol and one
of three signal words: DANGER, WARNING, or CAUTION. 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.
• Safety Headings—such as IMPORTANT SAFETY
INFORMATION.
• Safety Section—such as TRIMMER SAFETY.
• Instructions – how to use this trimmer/brush cutter correctly and
safely.
This entire book is filled with important safety information—please
read it carefully.
© 2004-2006 American Honda Motor Co., Inc.—All Rights Reserved
31VL3D10
00X31-VL3-D100
EM5
POM53509-C
IPC
4000.2006.12
PRINTED IN U.S.A.

WARNING:

The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
CONTENTS
TRIMMER SAFETY ........................................................................................................2
IMPORTANT SAFETY INFORMATION ..................................................................2
ATTACHMENTS & MODIFICATIONS.....................................................................2
IMPORTANT MESSAGE TO EMPLOYERS ...........................................................2
SAFETY LABEL LOCATIONS.................................................................................3
RECOMMENDED CUTTING ATTACHMENTS ..............................................................3
CUTTING-LINE HEADS AND SHIELDS .................................................................3
BLADES AND SHIELDS..........................................................................................4
CUTTING ATTACHMENT APPLICATIONS ............................................................5
ASSEMBLY.....................................................................................................................5
IMPORTANT SAFETY PRECAUTIONS..................................................................5
UNPACKING ...........................................................................................................5
LOOSE PARTS .......................................................................................................6
U-TYPE HANDLEBAR.............................................................................................6
SAW BLADE............................................................................................................7
ENGINE OIL ............................................................................................................8
CONTROLS AND EQUIPMENT .....................................................................................9
BEFORE OPERATION .................................................................................................11
OPERATION .................................................................................................................12
SAFE OPERATING PRECAUTIONS ....................................................................12
STOPPING THE ENGINE .....................................................................................13
TRIMMER/HARNESS QUICK DISCONNECTION ................................................14
TRIMMER OPERATION........................................................................................14
SAFE OPERATING PRACTICES.......................................................................... 15
OPERATING TIPS.................................................................................................15
SERVICING YOUR TRIMMER .....................................................................................16
MAINTENANCE SAFETY......................................................................................16
MAINTENANCE SCHEDULE ................................................................................17
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
DISTRIBUTOR'S LIMITED WARRANTY ..............................................................30
ACCESSORIES, REPLACEMENT PARTS, AND APPAREL WARRANTY ..........30
EMISSION CONTROL SYSTEM WARRANTY .....................................................31
QUICK REFERENCE INFORMATION ..................................................................32
1
TRIMMER SAFETY
Keep the Trimmer Properly Maintained
IMPORTANT SAFETY INFORMATION
• The cutting attachment should be examined for looseness, cracks,
broken parts, or excessive wear. Tighten or replace as needed
before operating the trimmer.
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.
• Do not operate the trimmer without a debris shield properly
installed. Make sure you have the right shield installed for your
cutting attachment.
For more information, see page 4.
These Honda trimmers are intended for use by gardening
professionals. Never allow children to operate the trimmer.
ATTACHMENTS & MODIFICATIONS
Most accidents 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
others.
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.
Always Wear Eye Protection and Protective Clothing
Attachments
• 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.
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.
• The operator must wear hearing protectors when using this
trimmer. Hearing protectors will protect the operator's ears from
noise damage.
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.
• 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.
See page 11 for more information.
Modifications
Keep Away From Cutting Lines and Blades
IMPORTANT MESSAGE TO EMPLOYERS
• 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.
As an employer, you have special responsibilities to the people who
work for you.
• 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.
Turn the Engine Off When Not Trimming
If you stop trimming or cutting for any reason, even to clean off the
cutting attachment, always shut off the engine.
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.
2
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.
Before you ask anyone to operate this trimmer/brush cutter, you need
to determine whether the operator is old enough, large enough, and
strong enough to safely handle and control the trimmer/brush cutter.
If you decide he/she is, make sure the employee(s) read and
understand all instructions and warnings in this manual and on the
labels before operating the trimmer/brush cutter.
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 trimmer/brush cutter.
Also be sure employees wear proper clothing, eye and hearing
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/brush cutter properly maintained and in safe operating
condition.
Your commitment to safety on the job can help prevent accidents and
result in longer and more productive years of service.
SAFETY LABEL LOCATIONS
The labels shown here contain important safety information. Please
read them carefully. These labels are considered permanent parts of
your trimmer/brush cutter. If a label comes off or becomes hard to
read, contact an authorized Honda servicing dealer for a replacement.
RECOMMENDED CUTTING
ATTACHMENTS
CUTTING-LINE HEADS AND SHIELDS
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.
TYPE EQUIPPED WITH
LOOP HANDLE
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.
Nylon monofilament line is suitable for cutting grass and ordinary
weeds, but not brush and woody growth.
CUTTING-LINE HEAD
NYLON MONOFILAMENT LINE
CUTOFF KNIFE
(inside the debris shield)
DEBRIS SHIELD
Manual-Feed Cutting-Line Head
Line is released from the cutting head by manually pulling and turning
the spool with the trimmer engine stopped.
To release more line,
pull the spool and turn
it counterclockwise.
SPOOL
HOUSING
Semi-Matic (bump-feed) Cutting-Line Head
TYPE EQUIPPED WITH
U-TYPE HANDLEBAR
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
HOUSING
3
BLADES AND SHIELDS
Weed/Brush Blades
A variety of blades are available from your Honda trimmer servicing
dealer. Always use a 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.
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.
DEBRIS SHIELDS
BLADE
GRASS/WEED
BLADE, WEED/
BRUSH BLADE
(optional part)
CUTTING-LINE
CUTOFF KNIFE
Brush/Wood Blades
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.
BRUSH/WOOD
BLADE
Brush/Wood Blade Cover Installation and Removal
Honda U-type handlebar trimmers are supplied with a blade cover
surrounding the edge of the blade. For safety, and to protect the
blade, the cover should be installed whenever the trimmer is not in
use.
BLADE
DEBRIS
SHIELD
1. Install the blade cover over the blade so half the blade is covered.
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.
Turn the blade cover slowly until the post end clears the debris
shield.
2. Reposition the post end over the blade.
3. With the blade cover fully seated on the blade, latch the tab over
the post.
BLADE
COVER
Remove the blade cover in the reverse order of installation.
BLADE
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 a debris shield for metal blades. Follow the
safety information and installation instructions that come with the kit.
Grass/Weed Blades
Grass/weed blades, which may be plastic or metal, are used as an
alternative to nylon monofilament line for cutting grass and ordinary
weeds.
However, blades should never be used for edging against solid
surfaces.
4
POST END
DEBRIS
SHIELD
BLADE COVER
CUTTING ATTACHMENT APPLICATIONS
ASSEMBLY
Type
Line Size
Blade Diameter
After assembly and before operation, review the Safe Operating
Precautions on page 12.
HHT25S
0.095 in
9 in
IMPORTANCE OF PROPER ASSEMBLY
HHT35S
0.095 or 0.105 in
9 or 10 in
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.
ATTACHMENTS FOR TRIMMING GRASS AND LIGHT WEEDS
Some of the most important safety precautions are given below.
However, we cannot warn you of every conceivable hazard that can
arise in performing this assembly. Only you can decide whether or not
you should perform a given task.
 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.
 WARNING
ATTACHMENTS FOR CUTTING THICK WEEDS AND LIGHT
BRUSH
Failure to properly follow instructions and precautions
can cause you to be seriously hurt or killed.
Follow the procedures and precautions in this manual
carefully.
IMPORTANT SAFETY PRECAUTIONS
• Make sure you have a clear understanding of all basic shop safety
practices and that you are wearing appropriate clothing and safety
equipment.
• Read the instructions before you begin and be sure you have the
tools and skills required to perform the tasks safely.
ATTACHMENTS FOR CUTTING WOODY BRUSH, SHRUBS,
SAPLINGS
• Make sure the engine is off before you begin any maintenance or
repairs. This will help eliminate several potential hazards:
T
T
T
Carbon monoxide poisoning from engine exhaust. Be sure
there is adequate ventilation whenever you run 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 the
instruction tells you to do so. Even then, keep your hands,
fingers, and clothing away from moving parts. Do not run the
engine when any protective guard or shield is removed.
• To reduce the possibility of a fire or explosion, be careful when
working around gasoline or batteries. Use only a nonflammable
solvent, not gasoline, to clean parts. Keep all cigarettes, sparks,
and flames away from all fuel-related parts.
UNPACKING
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.
Carefully remove the trimmer and loose parts from the carton and
compare the loose parts with the inventory list on page 6.
Tools Required (U-type handlebar only):
A 4 mm hex wrench, 8 and 17 mm sockets, 0 to 25 ft-lb torque
wrench.
5
LOOSE PARTS
U-TYPE HANDLEBAR
Check all loose parts against the following list. Contact your
authorized Honda servicing dealer if any of the loose parts shown are
not included with your trimmer.
Installation
1. Remove the four 5 x 28 mm bolt/washers and handlebar holder A.
THROTTLE TRIGGER
Ref.
No
Loop
handle
U-type
handlebar
Description
All
1
Owner’s Manual
•
1
2
Goggles
•
1
3
Oil bottle
•
1
4
Single-strap shoulder
harness
5
Full shoulder harness
•
1
6
Debris shield, for
30 ~ 80 tooth saw
blades only
•
1
7
Cover
•
1
8
Left-hand thread lock
nut, 10 mm
•
1
9
Saw blade,
50 tooth/10 in
•
1
2. Set the U-shaped handle into handlebar holder B with the throttle
trigger facing to the right.
10
Blade cover
•
1
3. Adjust the handlebar position as shown.
1
Qty.
•
HANDLEBAR
HOLDER A
1
3
2
5 x 28 mm
BOLT/WASHER (4)
U-SHAPED
HANDLEBAR
HANDLEBAR
HOLDER B
4
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
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
damage to your trimmer/brush cutter, other property, or the
environment.
We suggest you read the Distributor’s Limited Warranty (page 30) and
the Emission Control System Warranty (page 31) to fully understand
its coverage and your responsibilities of ownership.
When your trimmer/brush cutter needs scheduled maintenance, keep
in mind that your Honda servicing dealer is specially trained in
servicing Honda trimmers/brush cutters. Your Honda servicing dealer
is dedicated to your satisfaction, and will be pleased to answer your
questions and concerns.
SAFETY MESSAGES
Your safety and the safety of others are very important. We have
provided important safety messages in this manual and on the
trimmer/brush cutter. 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/brush
cutter. You must use your own good judgment.
You will find important safety information in a variety of forms:
• Safety Labels – on the trimmer/brush cutter.
• Safety Messages – preceded by a safety alert symbol and one
of three signal words: DANGER, WARNING, or CAUTION. 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.
• Safety Headings—such as IMPORTANT SAFETY
INFORMATION.
• Safety Section—such as TRIMMER SAFETY.
• Instructions – how to use this trimmer/brush cutter correctly and
safely.
This entire book is filled with important safety information—please
read it carefully.
© 2004-2006 American Honda Motor Co., Inc.—All Rights Reserved
31VL3D10
00X31-VL3-D100
EM5
POM53509-C
IPC
XXXX.2006.12
PRINTED IN U.S.A.
WARNING:
90°
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects or other reproductive harm.
CONTENTS
TRIMMER SAFETY ........................................................................................................2
IMPORTANT SAFETY INFORMATION ..................................................................2
ATTACHMENTS & MODIFICATIONS.....................................................................2
IMPORTANT MESSAGE TO EMPLOYERS ...........................................................2
SAFETY LABEL LOCATIONS.................................................................................3
RECOMMENDED CUTTING ATTACHMENTS ..............................................................3
CUTTING-LINE HEADS AND SHIELDS .................................................................3
BLADES AND SHIELDS..........................................................................................4
CUTTING ATTACHMENT APPLICATIONS ............................................................5
ASSEMBLY.....................................................................................................................5
IMPORTANT SAFETY PRECAUTIONS..................................................................5
UNPACKING ...........................................................................................................5
LOOSE PARTS .......................................................................................................6
U-TYPE HANDLEBAR.............................................................................................6
SAW BLADE............................................................................................................7
ENGINE OIL ............................................................................................................8
CONTROLS AND EQUIPMENT .....................................................................................9
BEFORE OPERATION .................................................................................................11
OPERATION .................................................................................................................12
SAFE OPERATING PRECAUTIONS ....................................................................12
STOPPING THE ENGINE .....................................................................................13
TRIMMER/HARNESS QUICK DISCONNECTION ................................................14
TRIMMER OPERATION........................................................................................14
SAFE OPERATING PRACTICES..........................................................................15
OPERATING TIPS.................................................................................................15
SERVICING YOUR TRIMMER .....................................................................................16
MAINTENANCE SAFETY......................................................................................16
MAINTENANCE SCHEDULE ................................................................................17
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
DISTRIBUTOR'S LIMITED WARRANTY ..............................................................30
ACCESSORIES, REPLACEMENT PARTS, AND APPAREL WARRANTY ..........30
EMISSION CONTROL SYSTEM WARRANTY .....................................................31
10W-30
Genuine Honda Oil
Specially formulated and
blended for Honda engines.
Meets or exceeds American
Petroleum Institute SJ
standards.
100 cc / 3.4 oz
1
4. Tighten the four 5 x 28 mm bolt/washers.
TORQUE: 3.6 ft-lb (5 N·m, 0.5 kg-m)
5. Make sure the tie straps are positioned as shown.
U-Type Handlebar Only
5
6
7
9
8
10
3.9 in (100 mm)
2.4 in (60 mm)
6. Operate the throttle trigger and make sure the throttle operates
smoothly.
6
SAW BLADE
2. Install the brush/wood blade debris shield.
The U-type handlebar models are shipped with a manual nylon
cutting-line head installed on the trimmer. If the saw blade is needed,
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.
Tighten the bolt/washers:
TORQUE: 2.5 ft-lb (3.4 N·m, 0.34 kg-m)
5 x 28 mm
BOLT/WASHER (4)
Cutting-Line Head Removal
SPACER (2)
[3/32" (2.3 mm) thick]
1. Align the gear case hole with the groove in cover plate/spacer A.
Insert a 4 mm hex wrench or equivalent into the gear case hole to
prevent the left-hand threaded output shaft from turning.
BRUSH/WOOD BLADE
DEBRIS SHIELD
CUTTING-LINE HEAD
ASSEMBLY
SPACER B
KNOB
(Do Not
Remove)
COVER PLATE/
SPACER A
Saw Blade Installation
1. Insert a 4 mm hex wrench or equivalent into the gear case hole to
prevent the output shaft from turning.
2. Install cover plate/spacer A onto the output shaft as shown.
TIGHTEN
OUTPUT SHAFT
(left-hand thread)
COVER
SPACER B
BLADE
2. Hold the wrench and rotate the cutting-line head in the direction of
the arrow and remove the cutting-line head assembly.
Remove the cutting-line head as an assembly. Do not remove the
knob. Refer to page 19 for a cutting-line head assembly drawing.
Debris Shield Removal/Installation
1. Remove the cutting-line debris shield.
5 x 28 mm
BOLT/WASHER (4)
Install with the white
markings facing the
debris shield.
BLADE
COVER
COVER PLATE/
SPACER A
SPACER (2)
[3/32" (2.3 mm) thick]
CUTTING-LINE
DEBRIS SHIELD
(with cutoff knife)
10 mm LOCK NUT
(left-hand thread)
OUTPUT SHAFT
(left-hand thread)
4 mm HEX TOOL
3. 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.
4. 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, 2.0 kg-m)
5. Remove the 4 mm hex wrench or equivalent from the gear case.
7
Blade Cover Removal
ENGINE OIL
1. Turn the blade cover slowly until the cover latch is clear of the
debris shield.
The trimmer is shipped WITHOUT OIL in the engine.
Unfasten the latch by lifting the tab off the post.
1. Place the trimmer on a level surface then remove the oil filler
cap/dipstick.
POST
OIL FILLER OPENING
TAB
BLADE COVER
2. Pull the post end away from the blade and set it on top of the blade
as shown.
OIL FILLER CAP/DIPSTICK
2. Slowly add the recommended oil (included in the box) to the
bottom edge of the oil filler opening. Do not overfill, as the engine
oil tank capacity is small.
POST END
3. Turn the blade cover slowly until the post end is clear of the debris
shield, then remove the blade cover from the blade.
POST END
3. If the supplied oil is not used, add enough SAE 10W-30 API
service category SJ or later oil. Add oil until the oil level is to the
bottom edge of the oil filler opening.
NOTICE
Running the engine with too little or too much oil can cause engine
damage.
4. Screw in the oil filler cap/dipstick securely.
FUEL
See page 24.
BEFORE OPERATION
Blade Cover Installation
1. Install the blade cover over the blade so half of the blade is
covered.
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.
2. Turn the blade cover slowly until the post end clears the debris
shield.
3. Reposition the post end over the blade.
4. With the blade cover fully seated on the blade, latch the tab over
the post.
8
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.
Before using the trimmer, all trimmer operators must read the
following sections.
• TRIMMER SAFETY (page 2)
• CONTROLS & EQUIPMENT (page 9)
• BEFORE OPERATION (page 11)
• OPERATION (page 12)
CONTROLS AND EQUIPMENT
Engine
SPARK PLUG
CHOKE
LEVER
COMPONENT CONTROLS AND LOCATIONS
SPARK
ARRESTER
Loop Type Handle
AIR
CLEANER
COVER
CUTTING-LINE HEAD
GEAR CASE
STARTER
GRIP
PRIMING
BULB
LOOP HANDLE
HARNESS HANGER
THROTTLE SET BUTTON
OPERATOR
PRESENCE
LEVER
DEBRIS SHIELD
WITH CUTOFF KNIFE
FUEL RETURN
TUBE (CLEAR)
OIL FILLER CAP
FUEL SUPPLY
TUBE (BLACK)
FUEL TANK CAP
DRIVE CABLE
FRAME PIPE
CONTROLS
The location and operation of the controls are similar on both the
HHT25S and HHT35S models.
IGNITION SWITCH
Choke Lever
THROTTLE
TRIGGER
The choke lever opens and closes the choke valve.
U-Type Handlebar
The CLOSED position enriches the fuel mixture for starting a cold
engine.
This type is supplied with a cutting-line head, a saw blade, and two
debris shields.
The OPEN position provides the correct fuel mixture for operation
after starting, and for restarting a warm engine.
CHOKE LEVER
IGNITION SWITCH
SAW BLADE
GEAR CASE
THROTTLE
TRIGGER
DRIVE CABLE
FRAME PIPE
THROTTLE
SET BUTTON
OPERATOR
PRESENCE
LEVER
DEBRIS SHIELD
FOR BRUSH/
WOOD BLADE
CLOSED
OPEN
HARNESS
HANGER
U-TYPE
HANDLEBAR
CUTTING-LINE HEAD
DEBRIS SHIELD WITH
CUTTING KNIFE
9
Ignition Switch
Priming Bulb
The ignition switch controls the ignition system.
Pressing the priming bulb pumps fuel from the fuel tank to the
carburetor. This procedure is necessary for starting the engine.
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.
To ensure fuel has reached the carburetor, press the priming bulb
repeatedly until fuel can be seen in the clear plastic fuel return tube.
Loop Handle:
U-type Handle:
STOP
(O)
STOP (O)
ON (I)
ON (I)
IGNITION
SWITCH
PRIMING
BULB
OPERATOR
PRESENCE
LEVER
IGNITION
SWITCH
FUEL RETURN TUBE
(clear plastic tube)
OPERATOR
PRESENCE
LEVER
RECOIL STARTER GRIP
Operator Presence Lever
Recoil Starter Grip
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.
Pulling the starter grip operates the recoil starter to turn the engine for
starting.
When the operator presses the presence lever by gripping the control
handle, the trigger moves freely.
EQUIPMENT
Throttle Trigger
The throttle trigger controls engine speed.
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.
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
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.
THROTTLE TRIGGER
IDLE
(cutting attachment stops)
The Honda HHT25S and HHT35S trimmer/brush cutters are supplied
with a shoulder harness and safety glasses. Refer to page 11 for a
description of other equipment and protective clothing you will need.
THROTTLE
SET BUTTON
Before operation, adjust your shoulder harness as described on
page 12.
SINGLE-STRAP SHOULDER HARNESS (Loop type handle)
FAST
(cutting attachment rotates)
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.
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.
10
QUICK-RELEASE LATCH
FULL SHOULDER HARNESS (U-type handlebar)
QUICK-RELEASE LATCH
Quick-Release Latch
Eye, Face, and Head Protection
The shoulder harnesses supplied with these trimmers are equipped
with a quick-release latch.
Always wear safety glasses or goggles that comply with ANSI
standard Z87.1 to protect your eyes from thrown objects. Prescription
glasses may be worn under the safety glasses or goggles.
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
A helmet with a face shield is recommended for further protection.
However, safety glasses or goggles should always be worn under the
face shield. Do not rely on a face shield alone to protect your eyes.
Wearing a dust mask will help to reduce the amount of pollen and dust
inhaled.
Hearing Protection
Hearing protectors will help to protect your ears from noise.
Earmuff-style hearing protectors can also protect your ears from
thrown objects.
Hand and Body Protection
Wear gloves, a long-sleeved shirt, and long pants made of heavy
material. Clothing should fit closely but allow freedom of movement,
and should have no strings, straps, etc. that could catch on brush or
the trimmer. Keep clothing fastened.
Foot Protection
QUICK-RELEASE LATCH
Wear sturdy work boots with good toe protection and nonslip soles.
Safety Glasses
IS YOUR WORKING AREA READY?
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.
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.
SAFETY GLASSES (ANSI Z87.1)
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.
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.
BEFORE OPERATION
ARE YOU READY TO OPERATE THE TRIMMER?
Your safety is your responsibility. A little time spent in preparation will
significantly reduce your risk of injury.
Knowledge
Read and understand this manual. Know what the controls do and
how to operate them.
Familiarize yourself with the trimmer and its operation before you
begin to use it. Know what to do in case of emergencies.
Physical and Mental Readiness
You must be alert and in good physical condition to operate the
trimmer. Do not operate the trimmer if you are tired, ill, or under the
influence of alcohol, medication, or any substance that might impair
your vision, dexterity, or judgment.
If you have any physical problem that may be aggravated by
strenuous work, consult your physician before operating the trimmer.
Protective Clothing
Wearing protective clothing will reduce your risk of injury. Do not wear
loose clothing, jewelry, short pants, sandals, or go barefoot. Secure
hair so it is above shoulder level.
If anyone approaches you while you are operating the trimmer,
release the throttle trigger and stop the engine.
IS YOUR TRIMMER READY TO GO?
For your safety, and to maximize the service life of your equipment, 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.
 WARNING
Improperly maintaining this trimmer, or
failing to correct a problem before operation,
could cause a malfunction in which you
could be seriously injured.
Always perform a preoperation inspection
before each operation, and correct any
problem.
Safety Inspection
• Look around the engine for signs of oil or gasoline leaks. Wipe up
any spills before starting the engine.
• Replace any damaged parts.
• Check that all fasteners are in place and secure. Tighten as
necessary.
11
Cutting Attachment Inspection
Balancing the Trimmer on the Shoulder Harness
• Look for signs of damage to the cutting attachment (see page 18
and page 21). Replace any cutting attachment and parts that are
worn out, bent, cracked, chipped, or damaged in any way.
Hang the trimmer on the harness hook, and see how it balances.
• If using a metal blade, be sure it is sharp. A dull blade is more likely
to snag and thrust.
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).
• If using a metal blade on a trimmer equipped with a loop handle, be
sure the barrier bar (optional part) is installed beneath the loop
handle.
• Make sure the cutting attachment is properly installed and securely
fastened (see page 21and page 22).
• Check that the debris shield is the correct shield for the cutting
attachment (see page 22), and that it is securely installed and in
good condition.
A few inches above the
ground
Maintenance Inspection
• Check the oil level (see page 17). Running the engine with a low oil
level can cause engine damage.
• Check the air filter (see page 18). A dirty air filter will restrict air flow
to the carburetor, reducing engine and trimmer performance.
• Check throttle cable free play (see page 18). The cable must be
correctly adjusted and operate smoothly for good throttle control.
• Check the fuel level (see page 24). Starting with a full tank will help
to eliminate or reduce operating interruptions for refueling.
ARE YOUR SHOULDER HARNESS AND
TRIMMER CORRECTLY ADJUSTED?
GROUND
OPERATION
SAFE OPERATING PRECAUTIONS
Adjusting the Harness
Before operating the trimmer for the first time, please review the
IMPORTANT SAFETY INFORMATION section on page 2 and
BEFORE OPERATION section starting on page 8.
Adjust the harness so the quick-release latch is at your right hip, as
shown.
Even if you have operated other trimmers, take time to become
familiar with the operation of this trimmer’s controls and handling.
For your safety, avoid starting or operating the engine in an enclosed
area, such as a garage. Your engine's exhaust contains poisonous
carbon monoxide gas which can collect rapidly in an enclosed area
and cause illness or death.
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 vibration syndrome
(Raynaud's disease). 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.
QUICK-RELEASE
LATCH
FULL SHOULDER
HARNESS
12
SINGLE-STRAP
SHOULDER HARNESS
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
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.
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.
CLOSED
OPEN
QUICK-RELEASE
LATCH
PRIMING
BULB
FUEL RETURN
TUBE
(clear plastic
tube)
HOOK
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, 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
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
STOP (O)
THROTTLE
TRIGGER
ON (I)
THROTTLE
TRIGGER
IGNITION
SWITCH
THROTTLE
SET BUTTON
1. Release the throttle trigger.
OPERATOR
PRESENCE
LEVER
4. Move the ignition switch to the ON (I) position.
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.
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.
2. Move the ignition switch to the STOP (O) position.
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.
A coasting blade can cause injury.
Maintain proper control of the trimmer until
the blade has completely stopped rotating.
13
TRIMMER/HARNESS QUICK DISCONNECTION
Throttle Operation
To quickly detach the trimmer from the harness, pull the quick-release
latch tab upward.
Pull the throttle trigger toward the grip to increase engine speed and
start the cutting attachment rotation.
LATCH TAB
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.
THROTTLE
TRIGGER
QUICK-RELEASE
LATCH
Insert the latch tongue in the slot of the quick-release latch to reattach
the trimmer to the harness.
IDLE
(cutting attachment stops)
FAST
(cutting attachment rotates)
TRIMMER OPERATION
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.
Using a Nylon Cutting-Line Head
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
manual-feed or a semi-matic (bump feed) cutting-line head, which
have different procedures for releasing line.
• Do not overreach.
The debris shield is equipped with a cutoff knife that automatically
removes any excess line that is released.
• Keep the cutting attachment below waist level.
Manual-Feed Cutting-Line Head
• Keep all parts of your body away from the rotating cutting
attachment and hot surfaces.
Line must be released with the cutting-line head stopped.
1. Stop the engine, and wait for the cutting-line head to coast to a
complete stop.
2. Hold the housing, pull the spool out about a quarter of an inch, then
turn the spool counterclockwise until it snaps into the housing
again.
The spool will snap into the housing every sixth of a turn, which
releases 1 to 1-1/2 inches of line.
To release more line,
pull spool and turn
counterclockwise.
SPOOL
HOUSING
Semi-Matic (bump-feed) Cutting-Line Head
Line must be released with the cutting-line head spinning rapidly.
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
HOUSING
14
Using Blades
Blade Thrust (Kickback)
Refer to the chart on page 5 for appropriate blade applications.
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.
If using a blade on a Honda trimmer equipped with a loop handle, also
install the optional Honda conversion kit that includes a full shoulder
harness, a barrier bar, and a debris shield for blades. Follow the
installation instructions and safety information that come with the kit.
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.
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.
Be sure to remove the blade cover before starting the engine.
Otherwise, the blade cover may fly off at high speed.
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.
BLADE
THRUST
SAFE OPERATING PRACTICES
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.
To reduce the risk of loosing control, use metal blades on trimmers
equipped with a U-type handlebar, or install the barrier bar (optional
part) on trimmers equipped with a loop handle.
 WARNING
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.
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.
Thrown Debris
The trimmer will throw debris in the direction of blade movement at
the point of contact.
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
Replace or resharpen dull blades. Dull blades are more likely to bind
in the cut and cause blade thrust.
Understand the reaction forces of the blade. When using a brush
blade to saw through heavy brush and small saplings, saw with the
side of the brush blade that is moving toward you and tends to pull the
trimmer away from you.
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,
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.
OPERATING TIPS
Scything
Cut with the right
side to throw debris
away from you.
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.
To direct thrown debris away from you, tilt the cutting attachment to
the right side, scythe from left to right, then return without cutting.
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.
15
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.
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.
SERVICING YOUR TRIMMER
THE IMPORTANCE OF MAINTENANCE
Good maintenance is essential for safe, economical, and trouble-free
operation. It will also help reduce air pollution.
 WARNING
DEBRIS
Improperly maintaining this trimmer, or failure to correct a
problem before operation, can cause a malfunction in
which you can be seriously hurt or killed.
Always follow the inspection and maintenance
recommendations and schedules in this owner's manual.
TRIMMING
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.
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 it in unusually wet or
dusty conditions, consult your authorized Honda servicing dealer for
recommendations applicable to your individual needs and use.
Remember that your authorized Honda servicing dealer knows your
trimmer best and is fully equipped to maintain and repair it.
Sawing heavy brush and saplings with the left side of the blade will
reduce the risk of kickback.
To ensure the best quality and reliability, use only new, genuine
Honda parts or their equivalents for repair and replacement.
Accelerate the engine to maximum speed before starting the cut, and
saw through with uniform pressure.
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.
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.
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.
 WARNING
Failure to properly follow maintenance instructions and
precautions can cause you to be seriously hurt or killed.
SAWING
Always follow the procedures and precautions in the
owner's manual.
Operation on Slopes
Safety Precautions
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.
• Make sure the engine is off before you begin any maintenance or
repairs. This will eliminate several potential hazards:
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.
16
— 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
gasoline, to clean parts. Keep cigarettes, sparks, and flames away
from all fuel-related parts.
MAINTENANCE SCHEDULE
Interval 1
Before each use
ENGINE
Engine Oil Level Check
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 and in an upright position.
Item
Check the engine oil (page 17)
Check the air cleaner (page 18)
Check the throttle cable (page 18)
Check the cutting attachment
Check the debris shield
Check/tighten nuts, bolts, and fasteners
Check the shoulder harness quick release
OIL FILLER
CAP/DIPSTICK
FILLER OPENING
First month or
10 hours
Change the engine oil (page 17)
Every 3 months
or 25 hours
Clean the air filter element (page 18) 2
2. Insert and remove the dipstick without screwing it into the filler
opening. Check the oil level shown on the dipstick.
Every 6 months
or 50 hours
Change the engine oil (page 17) 2
Clean the air filter element (page 18) 2
Check/lubricate the drive cable 3
Lubricate the gear case 3
Check the clutch shoes and drum 3
Check the engine cooling fins
3. If the oil level is low, fill to the edge of the oil filler hole with the
recommended oil (see page 18). To avoid overfilling or underfilling,
be sure the engine is in a level position, as shown.
Perform the 50-hour service items plus:
Check/adjust the idle speed 3
Check/adjust the valve clearance 3
Check/adjust the spark plug
Check the spark arrester
Check the fuel filter
Clean the fuel tank
4. Screw in the oil filler cap/dipstick securely.
Every year or
100 hours
1. Remove the filler cap/dipstick and wipe it clean.
Every 2 years or
300 hours
Perform the 100-hour service items plus:
Replace the spark plug (page 18)
Clean the combustion chamber 3
Every 2 years
Check the fuel tubes and replace if necessary 3
Check the oil tube and replace if necessary 3
NOTICE
Running the engine with too little or too much oil can cause engine
damage.
Engine Oil Change
Drain the used oil while the engine is warm. Warm oil drains quickly
and completely.
1. Log the hours of operation to determine the proper maintenance
interval.
FILLER
OPENING
2. Service more frequently when used in dusty areas.
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.
Failure to follow this maintenance schedule could result in
non-warrantable failures.
1. Place a suitable container below the engine to catch the used oil,
then remove the filler cap/dipstick and drain the used oil through
the filler opening. Allow the used oil to drain completely.
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 or pour it on the ground or
down a drain.
2. With the engine in an upright position, fill to the edge of the oil filler
hole with the recommended oil.
3. Screw in the filler cap/dipstick securely.
17
Engine Oil Recommendations
Throttle Cable Inspection
Oil is a major factor affecting performance and service life. Use
4-stroke automotive detergent oil.
Verify the throttle trigger operates smoothly and the throttle cable is
undamaged. If there is visible damage, or if the throttle trigger does
not operate smoothly, have your authorized Honda servicing dealer
replace the throttle cable.
SAE 10W-30 is recommended for all temperatures within the
recommended operating range for these trimmers. The recommended
operating range extends from 23°F (-5°C) to 104°F (40°C).
The SAE oil viscosity and service classification are on the API label
on the oil container. Honda recommends that you use API SERVICE
category SJ or later.
Check the free play at the end of the throttle cable.
Free play: 1/16 ~ 1/8 in (1.0 ~ 3.0 mm)
If adjustment is needed, use the following cable adjustment
procedure.
Air Filter Check
Squeeze the air cleaner latch tabs, and remove the air cleaner cover.
Check the filter to be sure it is clean and in good condition.
If the filter is dirty, clean it as described under Air Filter Cleaning.
Replace the filter if it is damaged. Reinstall the filter and air cleaner
cover.
CABLE END
FREE PLAY
1/16 ~ 1/8 in
(1.0 – 3.0 mm)
NOTICE
Operating the engine without an air filter, or with a damaged air filter,
will allow dirt to enter the engine, causing rapid engine wear. This type
of damage is not covered by the Distributor's Limited Warranty.
Air Filter Cleaning
A dirty air filter will restrict air flow to the carburetor, reducing engine
performance. If you operate the engine in very dusty areas, clean the
air filter more often than specified in the MAINTENANCE
SCHEDULE.
LOCK NUT
1. Clean the air filter in warm soapy water, rinse, and allow to dry
thoroughly. Or clean in nonflammable solvent and allow to dry.
2. Dip the air filter in clean engine oil, then squeeze out all excess oil.
The engine will smoke when started if too much oil is left in the
filter.
3. Wipe dirt from the air cleaner base and cover using a moist rag. Be
careful to prevent dirt from entering the carburetor.
ADJUSTING
NUT
Throttle Cable Adjustment
1. Loosen the lock nut with a 10 mm wrench, and turn the adjusting
nut as required.
• Turn the adjusting nut left for more free play.
• Turn the adjusting nut right for less free play.
2. Tighten the lock nut and recheck cable free play.
Spark Plug Service
Recommended spark plug: CMR5HSB (NGK)
NOTICE
Incorrect spark plugs can cause engine damage.
1. Remove the 5 x 12 mm hex bolt and top cover.
FILTER
5/32 in (4 mm)
HEX WRENCH
(commercially available)
AIR CLEANER
COVER
5 x 12 mm
HEX BOLT
SPARK PLUG
LATCH
TAB
RETAINING TABS
SPARK PLUG
CAP
TOP
COVER
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.
18
4. Inspect the spark plug. Replace it if the electrodes are worn, or if
the insulator is cracked or chipped.
2. Remove the two 4 x 6 mm self-tapping screws from the spark
arrester, and remove the spark arrester from the muffler.
5. Measure the spark plug electrode gap with a suitable gauge. The
gap should be
0.024 ~ 0.028 in (0.60 ~ 0.70 mm). Correct the gap, if necessary,
by carefully bending the side electrode.
SPARK
ARRESTER
GAP
0.024 - 0.028 in
(0.60 - 0.70 mm)
SIDE ELECTRODE
4 x 6 mm
SELF-TAPPING
SCREWS
SEALING
WASHER
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.
SPARK ARRESTER SCREEN
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.
If installing a new spark plug, tighten 1/2 turn after the spark plug
seats.
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 top cover and 5 x 12 mm hex bolt and tighten securely.
Spark Arrester Service
4. Install the spark arrester, top cover, and 5 x 12 mm hex bolt and
tighten securely.
CUTTING ATTACHMENTS
There are several cutting attachments for your trimmer. Use the
following section to inspect, remove, service and install a standard
(factory-installed) cutting attachment.
The spark arrester must be serviced every 100 hours to keep it
functioning as designed.
Always move the engine switch to the STOP (O) position and
disconnect the spark plug cap before performing any inspection,
adjustment, or maintenance on the trimmer.
If the engine has been running, the muffler will be very hot. Allow the
muffler to cool before servicing the spark arrester.
Cutting-Line Heads
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
All Honda trimmers come with either a manual 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.
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.
MUFFLER
For the manual feed head, make sure the three-sided knob is
correctly tightened (page 21). For the semi-matic head, verify the
spool is locked in place (page 22). For both head styles, check for any
cracks in the plastic and replace any damaged parts.
19
Installing Replacement Nylon Line
First, determine which cutting-line head style is on your trimmer. A
manual-feed trimmer head has a three-sided knob on the bottom of
the head, while the semi-matic head has a spring-loaded round button
on the bottom of the head.
Do not use any kind of metal, wire, or wire rope line on the trimmer.
Use only genuine Honda replacement nylon trimmer line or
equivalent.
4. 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 lines to get twisted.
It is important to prevent the two lines from getting twisted over
each other. Position a finger between the lines as you turn the
spool to prevent the lines from twisting.
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
0.095 in
HHT35S
0.095 or 0.105 in
See page 30 for replacement parts information.
Manual Cutting-Line Head
1. Clean any mud, dirt, debris, etc. from the area around the trimmer
head; otherwise, it will be more difficult to service.
5. 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.
2. Rotate the left-hand threaded knob in the direction of the arrow and
remove the knob.
Remove the spring and spool from the housing then remove any
remaining old line from the spool.
NOTCHES
HOUSING
SHAFT
SPOOL
SPRING
6. Feed both line ends through the metal eyelets in the housing.
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.
If you are not sure 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 you hear it
snap out of the notch. Trim the lines so they are equal length.
KNOB
(left-hand thread)
3. Measure approximately 20 feet (6 meters) of line, then thread one
end through the hole in the ridge on the spool. Pull the line until the
two line lengths are equal.
NYLON
LINE
SPOOL
20
METAL
EYELETS (2)
7. Install the spring and knob. Rotate the knob in the direction of the
arrow and hand tighten securely.
6. Measure approximately 20 feet (6 meters) of new line, then thread
one end through the hole in the ridge on the spool.
Pull the line until the two lengths are equal.
SPOOL
NYLON LINE
Semi-Matic (Bump-Feed) Cutting-Line Head
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.
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.
SPOOL
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.
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.
NOTCHES
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.
9. It may be necessary to push down and rotate the outer drive until
the round lugs align with the metal eyelets.
Feed both line ends through the metal eyelets in the housing.
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.
CHANNEL
HOUSING
5. Lift the spool out of the housing and remove any remaining line
from the spool.
21
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.
4. Remove spacer B and cover plate/spacer A from the output shaft.
Note the order and orientation of each part as you remove them.
CUTTING-LINE HEAD
OUTER
DRIVE
CHANNEL (2)
SPACER B
COVER PLATE/
SPACER A
ROUND LUG (2)
METAL
EYELET (2)
10.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.
OUTPUT SHAFT
(left-hand thread)
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.
Blade
Blade Inspection
HALF-ROUND
LOCKING HOLE
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.
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.
 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.
REMOVAL
DIRECTION
NORMAL
WORN
BENT
CRACKED
TRIMMER
HEAD
GEAR CASE
4 mm HEX WRENCH
(commercially available)
A dull blade can be sharpened, but a blade that is worn out, bent,
cracked, chipped, or otherwise damaged must be replaced.
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.
22
Blade Removal and Installation
Changing the Debris Shield
For loop handle models, a special optional Barrier Kit must be
installed before a blade can be used. Refer to the instructions
provided with each kit on how to install a blade on loop handle
models.
Refer to the applicable illustration for removing and installing the
debris shields. Tighten the spacer bolts/washers to the specified
torque.
Always wear gloves and install the blade cover on the blade when
working around the blade.
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.
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.
The blade lock nut is specially designed for this application. When
replacing the lock nut, use only a genuine Honda replacement lock
nut.
TORQUE: 2.5 ft-lb (3.4 N·m).
5 x 28 mm
BOLT/WASHER (4)
SPACER (2)
[3/32" (2.30 mm)
thick]
CUTTING-LINE
DEBRIS SHIELD
(with cutoff knife)
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.
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.
1. Install the protective plastic cover that came with the blade.
2. Insert a commercially available 4 mm hex tool or equivalent fully
into the gear case hole.
LOOSEN
TIGHTEN
5 x 28 mm
BOLT/WASHER (4)
SPACER (2)
[3/32" (2.3 mm) thick]
COVER
SPACER B
10 mm LOCK NUT
(left-hand thread)
BLADE DEBRIS
SHIELD
COVER PLATE/
SPACER A
BLADE
BLADE
COVER
OUTPUT SHAFT
(left-hand thread)
4 mm HEX
TOOL
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. 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: 14 ft-lb (20 N·m)
23
FUEL SYSTEM
Fuel Filter and Fuel Tank Cleaning
Refueling
1. Remove the fuel tank cap and empty the fuel tank into an approved
gasoline container. Use a funnel to avoid spilling gasoline.
This engine is certified to operate on unleaded gasoline with a pump
octane rating of 86 or higher.
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 from using a fuel with percentages of Ethanol or
Methanol greater than shown above are not overed by warranty.
Check the fuel level by looking through the translucent fuel tank. If the
fuel level is low, refuel in a well-ventilated area with the engine
stopped. If the engine has been running, allow it to cool first.
Never use stale or contaminated gasoline or an oil/gasoline mixture.
Avoid getting dirt or water in the fuel tank.
2. 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.
To refuel, rest the trimmer on the ground with the fuel tank cap facing
up, as shown. Remove the fuel tank cap and fill the tank with gasoline
to the bottom of the filler neck. Refuel carefully to avoid spilling fuel.
Do not overfill. There should be no fuel in the filler neck. After
refueling, tighten the fuel tank cap securely.
FUEL SUPPLY
TUBE (black)
FUEL
FILTER
 WARNING
Gasoline is highly flammable and explosive.
You can be burned or seriously injured when handling fuel.
•
Stop the engine and keep heat, sparks, and flame away.
•
Handle fuel only outdoors.
•
Wipe up spills immediately.
3. Inspect the fuel filter. If the fuel filter is dirty, remove it and wash it
with nonflammable solvent. Be careful to avoid damaging the filter.
4. Replace the filter if it is damaged or excessively dirty.
5. Rinse sediment from the fuel tank with nonflammable solvent.
FUEL
TANK CAP
6. Insert the fuel filter in the fuel tank and install the fuel tank cap.
Cooling Fin Inspection
1. Remove the 5 x 12 mm hex bolt and top cover. Inspect the engine
cooling fins and clean out any dirt and debris.
FUEL
TANK
MAXIMUM
FUEL
LEVEL
ENGINE COOLING FINS
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 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
under warranty.
24
2. Install the top cover and 5 x 12 mm hex bolt, and then tighten
securely.
STORAGE
STORAGE PREPARATION
Proper storage preparation is essential to keep your trimmer trouble
free and looking good. The following steps will help to keep rust and
corrosion from impairing your trimmer's function and appearance, and
will make the engine easier to start when you use the trimmer again.
Adding Fuel Stabilizer to Extend Fuel Storage Life
When adding a fuel stabilizer, fill the fuel tank with fresh gasoline. If
only partially filled, air in the tank will promote fuel deterioration during
storage. If you keep a container of gasoline for refueling, be sure that
it contains only fresh gasoline.
Add fuel stabilizer following the manufacturer's instructions.
Cleaning
After adding a fuel stabilizer, run the engine outdoors for 10 minutes
to be sure that treated gasoline has replaced the untreated gasoline in
the carburetor.
Wash the trimmer, including the area around the trimmer head.
Draining the Fuel Tank and Carburetor
Wash the engine by hand and be careful to prevent water from
entering the air cleaner.
Disconnect the spark plug cap. Make sure the ignition switch is in the
STOP (O) position.
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.
Drain the fuel from the fuel tank into a suitable container. Press the
primer bulb a few times to draw any remaining fuel out of the
carburetor, then drain this fuel from the tank.
Engine Oil
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.
Change the engine oil (see page 17).
If using a garden hose or pressure washing equipment to clean the
trimmer, be careful to avoid getting water into controls and cable, or
anywhere near the engine air cleaner or muffler opening.
Clean the air filter (see page 18) and move the choke lever to the
CLOSED position.
Before washing the trimmer head area, disconnect the spark plug cap
from the spark plug.
Blade
After washing the trimmer, wipe dry all accessible surfaces.
Engine Cylinder
Start the engine outdoors and let it run until it reaches normal
operating temperature to evaporate any water remaining on the
engine.
Remove the spark plug (see page 23). Pour a
1/4 tablespoon (1 ~ 3 cc) of clean engine oil into the cylinder. Pull the
starter rope several times to distribute the oil in the cylinder. Reinstall
the spark plug. Pull the starter rope slowly until resistance is felt, then
return the starter grip gently. This closes the valves so moisture
cannot enter.
Stop the engine and allow it to cool.
After the trimmer is clean and dry, coat areas that may rust with a light
film of oil. Lubricate the control cable cores with a silicone spray
lubricant.
Fuel
Gasoline will oxidize and deteriorate in storage. Old gasoline will
cause hard starting, and it leaves gum deposits that clog the fuel
system. If the gasoline in your trimmer deteriorates during storage,
you may need to have the carburetor and other fuel system
components serviced or replaced.
The length of time that gasoline can be left in your fuel tank and
carburetor without causing functional problems will vary with such
factors as gasoline blend, your storage temperatures, and whether
the fuel tank is partially or completely filled. The air in a partially filled
fuel tank promotes fuel deterioration. Very warm storage
temperatures accelerate fuel deterioration. Fuel deterioration
problems may occur within a few months, or even less if the gasoline
was not fresh when you filled the fuel tank.
Carburetor & Air Cleaner
If a blade is installed, put the blade cover on the blade.
STORAGE PRECAUTIONS
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 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.
If possible, avoid storage areas with high humidity, because that
promotes rust and corrosion.
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 non-porous
cover will trap moisture, promoting rust and corrosion.
REMOVAL FROM STORAGE
The Distributors Limited Warranty does not cover fuel system damage
or engine performance problems resulting from neglected storage
preparation.
Check your trimmer as described in the BEFORE OPERATION
section of this manual.
You can extend fuel storage life by adding a gasoline stabilizer that is
formulated for that purpose, or you can avoid fuel deterioration
problems by draining the fuel tank and carburetor.
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 will smoke briefly at startup. This is normal.
25
TRANSPORTING
Low Power or Engine Speed Won’t Increase
Possible Cause
Correction
BEFORE LOADING
Air filter is dirty or clogged.
Clean or replace the air filter.
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.
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.
Spark arrester screen
clogged.
Clean the screen.
Grass is wrapped around the
output shaft and/or cutting
attachment.
Move the ignition switch to the
STOP (O) position and disconnect
the spark plug cap from the spark
plug. Remove grass from the
output shaft and cutting attachment
area.
Always turn the ignition switch to the STOP (O) position. Make sure
the fuel cap is securely tightened.
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.
Blade or Cutting Line Head Won’t Stop Turning When the
Throttle is at the Slow Position
Possible Cause
Correction
Fault in the throttle control or
cable; throttle cable out of
adjustment or bent.
Check the throttle control parts;
adjust or replace the cable if
necessary.
Idle speed is too fast.
Adjust the idle speed.
Broken or worn clutch
springs, or faulty clutch
system.
Replace the clutch springs or
replace or repair other clutch
system parts.
Blade or Cutting Line Head Won’t Turn
Possible Cause
Worn or broken clutch,
broken drive cable, worn or
broken gear case parts.
TAKING CARE OF
UNEXPECTED PROBLEMS
Engine Will Not Start
Possible Cause
Correction
Ignition switch is in the STOP
(O) position.
Turn the ignition switch ON (I).
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
to fill the carburetor.
Bad fuel, trimmer stored
without treating or draining
gasoline, refueled with bad
gasoline.
Drain the fuel tank and carburetor,
refuel with fresh gasoline.
Spark plug is faulty, fouled,
or has incorrect gap.
Clean, gap, or replace the spark
plug.
Fuel filter clogged, carburetor
malfunction, ignition
malfunction, valves stuck,
etc.
Replace or repair faulty
components as needed.
26
Correction
Replace or repair faulty
components as needed.
Excessive Vibration
Possible Cause
Correction
Loose cutting-line head or
blade nut.
Tighten the cutting-line head or
blade nut securely.
Cutting-line is not wound
properly or has unequal line
lengths.
Rewind the cutting-line and cut to
equal lengths.
Damaged blade.
Replace the blade.
TECHNICAL INFORMATION
This section contains important information about serial number
locations, high altitude operation, and emissions control systems.
Serial Number Locations
There are two serial numbers, one for the trimmer and one for the
engine. Record these numbers in the space provided. You will need to
have these numbers available when ordering parts or making
technical or warranty inquiries (page 29).
Engine serial number: _____________________________
Frame serial number: ______________________________
Date of purchase: _________________________________
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.
The U.S., California Clean Air Act and Environment
Canada
EPA, California and Canadian regulations require all manufacturers to
furnish written instructions describing the operation and maintenance
of emissions control systems.
The following instructions and procedures must be followed in order to
keep the emissions from your Honda engine within the emissions
standards.
ENGINE
SERIAL
NUMBER
Tampering and Altering
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.
FRAME SERIAL NUMBER
• Altering or defeating the speed-adjusting mechanism to cause the
engine to operate outside its design parameters.
Problems That May Affect Emissions
If you are aware of any of the following symptoms, have your engine
inspected and repaired by your servicing dealer.
• Hard starting or stalling after starting
• Rough idle
Carburetor Modifications for High Altitude Operation
At high altitude, 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.
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.
• Misfiring or backfiring under load
• Afterburning (backfiring)
• 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, California and
Canadian emissions regulations. We recommend the use of genuine
Honda 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 17. 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.
27
Air Index
DIMENSIONS
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.
Handle Installed
Applicable to Emission
50 hours (0 ~ 80 cc)
125 hours (greater than 80 cc)
Intermediate
125 hours (0 ~ 80 cc)
250 hours (greater than 80 cc)
300 hours (0 ~ 80 cc)
500 hours (greater than 80 cc)
1000 hours (225 cc and greater)
Extended
The Air Index Information hang tag/label must remain on the
trimmer/brush cutter until it is sold. Remove the hang tag before
operating the trimmer/brush cutter.
Manual feed
head
73.4 in
(1865 mm)
73.8 in
(1875 mm)
Semi-matic
feed head
73.4 in
(1865 mm)
73.8 in
(1875 mm)
U-type1
74.4 in
(1890 mm)
75.0 in
(1905 mm)
Loop
12.8 in
(325 mm)
12.8 in
(325 mm)
U-type
23.6 in
(600 mm)
23.6 in
(600 mm)
Loop
9.6 in
(245 mm)
10.2 in
(260 mm)
U-type
15.9 in
(405 mm)
15.9 in
(405 mm)
Loop
12.1 lb
(5.5 kg)
14.8 lb
(6.7 kg)
U-type
12.8 lb
(5.8 kg)
15.4 lb.
(7.0 kg)
Length
Width
Durability Period
Moderate
HHT35S
Loop
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 CONTROL SYSTEM WARRANTY
(page 31) for additional information.
Descriptive Term
HHT25S
Height
Dry
weight
1with saw blade installed
SPECIFICATIONS
Tuneup
FEATURES
HHT25SLTAT
GX25
HHT35SUKAT
•
•
ITEM
Spark plug gap
•
GX35
Loop handle
HHT35SLTAT
•
Valve clearance
(cold)
•
U-type
handlebar
•
Manual feed
head
optional
optional
•
Semi-matic
feed head
•
•
optional
Saw blade
optional
(requires
optional
Barrier Kit)
optional
(requires
optional
Barrier Kit)
•
Intake: 0.08 ± 0.02 mm
Exhaust: 0.11 ± 0.02 mm
MAINTENANCE
Refer to page 23
See your
authorized
servicing Honda
dealer
ENGINE (HHT25S)
Model
Engine type
Displacement
Bore & stroke
Ignition system
Spark plug
Starting system
Fuel
Fuel tank capacity
Oil capacity
Carburetor type
Air cleaner
Idle speed
28
SPECIFICATION
0.024 - 0.028 in
(0.60 - 0.70 mm)
GX25
4-stroke, overhead-cam, single-cylinder
1.5 cu in (25.0 cc)
1.4 x 1.0 in (35 x 26 mm)
Transistorized magneto
NGK: CMR5H
Recoil
Unleaded gasoline (86 octane or higher)
0.13 US gal, 16.9 fl.oz. (0.50 )
2.7 fl oz (80 cc)
Diaphragm type (overflow return) with fuel
pump
Single element, semi-dry
3,100 ± 200 rpm
CONSUMER INFORMATION
ENGINE (HHT35S)
Model
Engine type
Displacement
Bore & stroke
Ignition system
Spark plug
Starting system
Fuel
Fuel tank capacity
Oil capacity
Carburetor type
GX35
4-stroke, overhead-cam, single-cylinder
2.2 cu in (35.8 cc)
1.5 x 1.2 in (39 x 30 mm)
Transistorized magneto
NGK: CMR5H
Recoil
Unleaded gasoline (86 octane or higher)
0.17 US gal, 22.0 fl oz (0.65)
3.4 fl oz (100 cc)
Diaphragm type (overflow return) with fuel
pump
Single element, semi-dry
3,100 ± 200 rpm
Air cleaner
Idle speed
FRAME (HHT25S)
Ignition switch
Throttle control
Frame OD
pipe
Thickness
Type
Drive
Engagement
Bushing
Gear
case
Clutch
Material
OD
Material
Length
Ratio
Type
Size
Engagement
Drive
Type
Slide type
Two-motion trigger style
1.0 in (25.4 mm)
0.059 in (1.5 mm)
Flexible steel cable
0.25 in (6.3 mm)
0.20 in (5 mm)
square drive both ends
Nylon
57.5 in (1460 mm)
1.24 (input shaft) : 1 (output
shaft)
Ball bearings, helical cut
gears, no shims required
2.18 in (55.2 mm)
4,200 ± 200 rpm
Square female
Centrifugal
Ignition switch
Throttle control
Frame OD
pipe
Thickness
Drive
Gear
case
Clutch
Material
OD
Engagement
Bushing
To find an Authorized Honda Servicing Dealer anywhere in the United
States:
Call (800) 426-7701
or visit our website:
www.hondapowerequipment.com/dea.htm
Customer Service Information
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.
If you are dissatisfied with the decision made by the dealership's
management, contact the Honda Power Equipment Customer
Relations Office. You can write:
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. - 8:00 p.m. ET
When you write or call, please give us this information:
• Model and serial numbers (page 27)
• 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 additional information for maintaining
and repairing your trimmer.
Shop Manual
FRAME (HHT35S)
Type
Dealer Locator Information
Material
Length
Ratio
Type
Size
Engagement
Drive
Type
Slide type
Two-motion trigger style
1.0 in (25.4 mm)
0.059 in (1.5 mm)
Flexible steel cable
0.25 in (6.3 mm)
0.20 in (5 mm)
square drive both ends
Nylon
57.5 in (1460 mm)
1.24 (input shaft) : 1 (output
shaft)
Ball bearings, helical cut
gears, no shims required
3.09 in (78.4 mm)
4,200 ± 200 rpm
Square female
Centrifugal
This manual covers complete maintenance and overhaul procedures.
It is intended to be used by a skilled technician. Available through
your Honda dealer or through Helm Inc. at (888) 292-5395 or visit:
www.hondapowerequipment.com/own.htm.
Parts Catalog
This manual provides complete, illustrated parts lists, and is available
through your Honda dealer.
29
Replacement Parts, Optional Equipment, and
Service Items
Contact an authorized Honda servicing dealer to purchase any of
these (or other) genuine original Honda items.
Replacement Parts
Item
Part Number
Notes
Air cleaner element
17211-Z0H-000
Spark plug
31915-Z0H-003
NGK: CMR5H
Cutting-line manual-feed
72512-095-0855Q
0.095" spool
Cutting-line semi-matic
(bump-feed)
72512-095-0285Q
0.095" doughnut
Item
Part Number
Notes
Fast funnel
08C25-FST-000
Disposable and
spill free
No-Spill® gas can
06176-1405
2.5 gallon spill-control type (CARB)
Barrier kit
06631-VH8-740
Use with saw blade
Optional Equipment
American Honda Motor Co., Inc.
Power Equipment Customer Relations Dept.
4900 Marconi Drive
Alpharetta, GA 30005-8847
Telephone: (770) 497-6400
This warranty does not extend to parts affected or damaged by accident and/or
collision, normal wear, fuel contamination or deterioration, 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, or any causes other than defects in material or workmanship of the
product.
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:
Item
Part Number
Notes
SAE 10W-30 engine oil
08207-10W30
Genuine Honda
recommended oil
Fuel stabilizer
08732-0001
For long term storage
DISTRIBUTOR'S LIMITED WARRANTY
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.
Hand-held products
(limited lifetime warranty on
HHT drive cable)
You must 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, at your expense, 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. If you are unable to obtain warranty service, or are dissatisfied with the
warranty service you receive, take the following steps: First, 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.
Exclusions:
Service Items
PRODUCTS COVERED BY
THIS WARRANTY
To Obtain Warranty Service:
LENGTH OF WARRANTY
(from date of original retail purchase)
Noncommercial/
Nonrental
Commercial/
Rental
24 months
12 months/3 months
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. 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.
ACCESSORIES, REPLACEMENT PARTS, AND
APPAREL WARRANTY
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
To Qualify For This Warranty:
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 the first retail purchaser
and each subsequent owner during the applicable warranty time period.
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 Company, 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.
30
LENGTH OF WARRANTY
(from date of original retail purchase)
Noncommercial/
Commercial/
Nonrental
Rental
Accessories
12 months
3 months
Replacement Parts
6 months
3 months
Apparel
6 months
3 months
To Qualify for this Warranty:
1. The accessories, replacement parts, or apparel must be purchased
from American Honda or a dealer, distributor, or distributor’s 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.
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:
All of the United States and Canada
American Honda will repair or replace, at its option, any power equipment
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 Company, 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.
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.
Accessories and replacement parts 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, accessories and
replacement parts 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.
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.
Manufacturer's Warranty Coverage:
The 1995 and later power equipment engines are warranted for two years. If
any emission-related part on your engine is defective, the part will be repaired
or replaced by Honda.
To Obtain Warranty Service:
Owner's Warranty Responsibility:
You must take the Honda Power Equipment accessory, replacement part,
apparel, or the power equipment on which the accessory or replacement part
is installed, and proof of purchase, at your expense, to any Honda Power
Equipment dealer in the United States, Puerto Rico, or the U.S. Virgin Islands
who is authorized to service that product, during the dealer's normal business
hours. If you are unable to obtain warranty service, or are dissatisfied with the
warranty service you receive, take the following steps: First, 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. Refer to
page 29 for contact information.
As the power equipment engine owner, you are responsible for the
performance of the 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 the performance of all
scheduled maintenance.
Exclusions:
This warranty does not extend to accessories, parts, or apparel affected or
damaged by accident and/or 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.
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, 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.
EMISSION CONTROL SYSTEM WARRANTY
As the power equipment engine owner, you should, however, be aware that
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 warranty repairs
should be completed in a reasonable amount of time, not to exceed 30 days.
If you have any questions regarding your warranty rights and responsibilities,
you should write or call the Honda office in your region.
American Honda Motor Co., Inc.
Power Equipment Customer Relations
4900 Marconi Drive
Alpharetta, Georgia 30005-8847
Telephone: (770) 497-6400
or
Honda Canada Inc.
Power Equipment Customer Relations
715 Milner Avenue
Toronto, ON M1B 2K8
Telephone: (888) 946-6329
Warranty Coverage:
Honda power equipment engines manufactured after January 1, 1995, and
sold in the State of California, and U.S. EPA certified engines manufactured on
or after September 1, 1996, and sold in all of the United States, and Canadian
certified engines manufactured on or after January 1, 2005, are covered by
this warranty for a period of two years from the date of delivery to the original
retail purchaser. This warranty is transferable to each subsequent purchaser
for the duration of the warranty period.
Your new Honda Power Equipment engine complies with the U.S. EPA,
Environment Canada, and State of California emission regulations. American
Honda Motor Co., Inc. provides the emission warranty coverage for engines in
the United States and its territories. Honda Canada Inc. provides the emission
warranty for engines in the 13 provinces and territories of Canada. In the
remainder of this Emission Control System Warranty, American Honda Motor
Company, Inc. and Honda Canada Inc. will be referred to as Honda.
Warranty repairs will be made without charge for diagnosis, parts, or labor. All
defective parts replaced under this warranty become the property of Honda.
Warranted parts are listed under Emission Control System Warranty Parts on
page 32. 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.
Your Warranty Rights and Obligations:
Honda is also liable for damages to other engine components caused by a
failure of any warranted part during the warranty period.
California
The California Air Resources Board and Honda are pleased to explain the
emission control system warranty on your Honda Power Equipment engine. In
California, new utility and lawn and garden equipment engines must be
designed, built, and equipped to meet the State's stringent anti-smog
standards.
Other States, U.S. Territories and Canada
Only Honda approved replacement parts may be used in the performance of
any warranty repairs and must be provided without charge to the owner. The
use of replacement parts not equivalent to the original parts may impair the
effectiveness of your engine emission control system. If such a 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.
In other areas of the United States and in Canada, your engine must be
designed, built, and equipped to meet the U.S. EPA and Environment Canada
emission standards for spark-ignited engines at or below 19 kilowatts.
31
QUICK REFERENCE INFORMATION
To Obtain Warranty Service:
You must take your Honda Power Equipment engine or the product on which it
is installed, along with your warranty registration card or other proof of original
purchase date, at your expense, to any Honda Power Equipment dealer who is
authorized by Honda to sell and service that Honda product during his 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 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, write or call the Power Equipment Customer Relations Department
of American Honda Motor Co., Inc. Refer to page 29 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 which are affected or damaged by owner abuse,
neglect, improper maintenance, misuse, misfueling, improper storage,
accident and/or collision, the incorporation of, or any use of, any add-on or
modified parts, 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 services 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.
Fuel
Type
Unleaded gasoline with a pump
octane rating of 86 or higher
(page 24)
Engine oil
Type
SAE 10W-30, API SJ or later
(page 18)
Spark plug
Type
NGK: CMR5H
Check engine oil (page 17)
Check air filter (page 18)
Check throttle cable (page 18)
Check cutting attachment
Before each
(page 18 and page 21)
use
Check debris shield (page 18)
Check nuts, bolts, fasteners
Maintenance
Check shoulder harness, quick
release (page 14)
Disclaimer of Consequential Damage and Limitation of Implied
Warranties:
American Honda Motor Co., Inc. and Honda Canada Inc. disclaim 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, U.S.
EPA, or Environment Canada Emission Control System Warranty regulation is
in effect.
Emission Control System Warranty Parts:
SYSTEMS COVERED
BY THIS WARRANTY
PARTS DESCRIPTION
Fuel Metering
Carburetor assembly, (includes starting enrichment
system), Engine temperature sensor, Engine
control module, Fuel regulator, Intake manifold
Evaporative
Fuel tank, Fuel cap, Fuel hoses, Vapor hoses,
Carbon canister, Canister mounting brackets, Fuel
strainer, Fuel cock, Fuel pump, Fuel hose joint, Seal
cap, Canister purge hose joint
Exhaust
Catalyst, Exhaust manifold
Air Induction
Air filter housing, Air filter element*, Crankcase
breather tube
Ignition
Flywheel magneto, Ignition pulse generator,
Crankshaft position sensor, Power coil, Ignition coil
assembly, Ignition control module, Spark plug cap,
Spark plug*
Miscellaneous Parts
Tubing, fittings, seals, gaskets, and clamps
associated with these listed systems
* Covered up to the first required replacement only. See the Maintenance
Schedule on page 17.
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.
32
Printed on
Recycled Paper
First 10
hours
Change engine oil (page 17)
Subsequent
Refer to the Maintenance
Schedule (page 17)