Honda HHT25S, HHT35S Owner's Manual 32 Pages
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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.
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.
We suggest you read the DISTRIBUTOR’S LIMITED WARRANTY
EMISSION CONTROL SYSTEM WARRANTY
(page 30) 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.
Keep this owner’s manual handy, so you can refer to it at any time.
This owner’s manual is considered a permanent part of the trimmer and should remain with the trimmer if resold.
The information and specifications included in this publication were in effect at the time of approval for printing. Honda Power Equipment
Mfg. Inc. reserves the right, however, to discontinue or change specifications or design at any time without notice and without incurring any obligation whatever. No part of this publication may be reproduced without written permission.
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.
• Instructions – how to use this trimmer/brush cutter correctly and safely.
• Safety Messages – preceded by a safety alert
A
symbol and one of three signal words: DANGER, WARNING, or CAUTION. These signal words mean:
B
DANGER
You WILL be KILLED or SERIOUSLY
HURT if you don't follow instructions.
B
WARNING
You CAN be KILLED or SERIOUSLY
HURT if you don't follow instructions.
B
CAUTION
You CAN be HURT if you don't follow instructions.
Each message tells you what the hazard is, what can happen, and what you can do to avoid or reduce injury.
• Damage Prevention Messages – You will also see other important messages that are preceded by the word NOTICE. This word means:
NOTICE
Your trimmer or other property can be damaged if you don’t follow instructions.
© 2004-2008 American Honda Motor Co., Inc.—All Rights Reserved
31VL3D12
00X31-VL3-D120
EM5
POM31VL3D12
IPC.xxxx.2008.11
PRINTED IN U.S.A.
OWNER’S MANUAL
HHT25S • HHT35S
B
WARNING:
B
The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
CONTENTS
INTRODUCTION ............................... 1 TRIMMER OPERATION............. 11
SAFETY MESSAGES........................ 1 SAFE OPERATING PRACTICES12
OPERATING TIPS ..................... 13
TRIMMER SAFETY ........................... 2
IMPORTANT SAFETY
INFORMATION............................. 2
SERVICING YOUR TRIMMER........ 14
MAINTENANCE SAFETY........... 14
MAINTENANCE SCHEDULE ..... 14 ATTACHMENTS &
MODIFICATIONS ......................... 2
IMPORTANT MESSAGE TO
EMPLOYERS ............................... 2
ENGINE ...................................... 15
FUEL SYSTEM........................... 17
COOLING FIN INSPECTION ..... 18
SAFETY LABEL LOCATIONS ...... 3
ASSEMBLY ....................................... 3
IMPORTANT SAFETY
PRECAUTIONS ............................ 3
ATTACHMENTS.............................. 18
CUTTING ATTACHMENT
APPLICATIONS ......................... 18
CONTROLS AND EQUIPMENT........ 7
COMPONENT CONTROLS AND
LOCATIONS ................................. 7
BLADES ..................................... 19
DEBRIS SHIELDS ...................... 20
CUTTING-LINE HEADS ............. 21
CONTROLS .................................. 7
STORAGE ....................................... 24
EQUIPMENT ................................ 8
TRANSPORTING ............................ 25
BEFORE OPERATION...................... 9
ARE YOU READY TO OPERATE
PROBLEMS..................................... 25
THE TRIMMER? ........................... 9
IS YOUR WORKING AREA
READY? ....................................... 9
OPERATION.................................... 10
SAFE OPERATING
TECHNICAL INFORMATION .......... 26
SPECIFICATIONS...................... 27
IS YOUR TRIMMER READY TO
GO? .............................................. 9
ARE YOUR SHOULDER HARNESS
AND TRIMMER CORRECTLY
ADJUSTED? ............................... 10
CONSUMER INFORMATION ......... 28
DISTRIBUTOR'S LIMITED
WARRANTY ............................... 29
ACCESSORIES, REPLACEMENT
PARTS, AND APPAREL
PRECAUTIONS ..........................10
EMISSION CONTROL SYSTEM 27
WARRANTY ............................... 30
EMISSION CONTROL SYSTEM
WARRANTY ............................... 30
STARTING THE ENGINE........... 10
QUICK REFERENCE
STOPPING THE ENGINE .......... 11
INFORMATION........................... 31
TRIMMER/HARNESS QUICK
DISCONNECTION...................... 11
1
2
TRIMMER SAFETY
IMPORTANT SAFETY INFORMATION
The Honda HHT25S and HHT35S trimmer/brush cutters are designed to cut grass, weeds, brush, and/or wood if equipped with an appropriate cutting attachment. Other uses can result in injury to the operator or damage to the trimmer and other property.
These Honda trimmers are intended for use by gardening professionals. Never allow children to operate the trimmer.
Most injuries or property damage can be prevented if you follow all instructions in this manual and on the trimmer. The most common hazards are discussed below, along with the best way to protect yourself and others.
Always Wear Eye Protection and Protective Clothing
• The most frequent injuries associated with string trimmers are eye injuries caused by thrown debris. Always wear safety glasses or goggles that meet the ANSI Z87.1 rating whenever you use the trimmer.
• The operator must wear hearing protectors when using this trimmer. Hearing protectors will protect the operator's ears from noise damage.
• Wearing protective clothing also reduces the risk and severity of injury from thrown debris or contact with the cutting attachment.
Wear the trimmer harness, gloves, a long-sleeved shirt, long pants, and sturdy boots with nonslip soles.
See page 9 for more information.
Keep Away From Cutting Lines and Blades
• A spinning cutting blade can cut through your clothes and skin just as easily as it cuts through grass and dirt. Keep all parts of your body away from a spinning cutting attachment.
• Even after the engine has stopped, the cutting attachment will spin for several seconds. Do not touch it until it has stopped spinning, or you may get cut.
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.
Keep the Trimmer Properly Maintained
• The cutting attachment should be examined for looseness, cracks, broken parts, or excessive wear. Tighten or replace as needed before operating the trimmer.
• Do not operate the trimmer without a debris shield properly installed. Make sure you have the right shield installed for your cutting attachment.
For more information, see page 20.
ATTACHMENTS & MODIFICATIONS
Modifying your trimmer/brush cutter, or installing non-Honda attachments, can make your trimmer unsafe. Before you make any modifications or install any attachments, be sure to read the following information.
Attachments
Your Honda trimmer servicing dealer has cutting attachments, debris shields, barrier kits, and shoulder harnesses that have been designed and approved for your trimmer and are covered by warranty. See
RECOMMENDED CUTTING ATTACHMENTS
Non-Honda attachments are usually designed for universal applications. Although aftermarket attachments may fit on your trimmer, they may not meet factory specifications and could make your trimmer unsafe.
Modifications
Do not remove the debris shield or modify your trimmer in any way that would alter its design or operation. This could make your trimmer unsafe.
IMPORTANT MESSAGE TO EMPLOYERS
As an employer, you have special responsibilities to the people who work for you.
Before you ask anyone to operate this trimmer/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 injuries 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.
ASSEMBLY
After assembly and before operation, review the SAFE OPERATING
PRECAUTIONS
IMPORTANCE OF PROPER ASSEMBLY
Proper assembly is essential to operator safety and the reliability of the machine. Any error or oversight made by the person assembling and servicing a machine can result in faulty operation, damage to the machine, or injury to the operator.
TYPE EQUIPPED WITH
LOOP HANDLE
B 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.
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.
B WARNING
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.
TYPE EQUIPPED WITH
U-TYPE HANDLEBAR
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.
• Make sure the engine is off before you begin any maintenance or repairs. This will help eliminate several potential hazards:
T Carbon monoxide poisoning from engine exhaust. Be sure there is adequate ventilation whenever you run the engine.
T Burns from hot parts. Let the engine and exhaust system cool before touching.
T 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. Use only a nonflammable solvent, not gasoline, to clean parts. Keep all cigarettes, sparks, and flames away from all fuel-related parts.
UNPACKING
Carefully remove the trimmer and loose parts from the carton and compare the loose parts with the inventory list.
Tools Required (U-type handlebar only):
A 4 mm hex wrench, 8 and 17 mm sockets, 0 to 25 ft-lb torque wrench.
3
4
LOOSE PARTS
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.
U-TYPE HANDLEBAR
Installation
1. Remove the four 5 x 28 mm bolt/washers and handlebar holder A.
THROTTLE TRIGGER
Ref.
No
Description
1
2
3
7
8
5
6
4
9
Owner’s Manual
Goggles
Oil bottle
Single-strap shoulder harness
Full shoulder harness
Brush/wood debris shield
Cutting-line debris shield
Cover
10 mm left-hand thread lock nut
10 Spacer
11 5 x 28 mm bolt
12 Spacer set (A & B)
13
Brush/wood saw blade
(50-tooth/10 in)
14 Blade cover
15 Cutting-line head
Loop handle
•
•
•
•
U-type handlebar
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Qty.
1
1
1
1
1
1
1
1
1
1
1
1
2
4
1
U-SHAPED
HANDLEBAR
5 x 28 mm
BOLT/WASHER (4)
HANDLEBAR
HOLDER A
HANDLEBAR
HOLDER B
2. Set the U-shaped handle into handlebar holder B with the throttle trigger facing to the right.
3. Adjust the handlebar position as shown.
2 4 1
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.
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.
OWNER’S MANUAL
Trimmer/Brush Cutter
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.
WARNING:
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.
The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.
CONTENTS
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:
DANGER
WARNING
CAUTION You CAN be HURT if you don't follow instructions.
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
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:
You WILL be KILLED or SERIOUSLY
HURT if you don't follow instructions.
You CAN be KILLED or SERIOUSLY
HURT if you don't follow instructions.
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
• Safety Headings—
INFORMATION
• Safety Section—
Instructions safely.
such as IMPORTANT SAFETY
– how to use this trimmer/brush cutter correctly and
This entire book is filled with important safety information—please read it carefully.
such as TRIMMER SAFETY.
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
© 2004-2006 American Honda Motor Co., Inc.—All Rights Reserved
31VL3D10
00X31-VL3-D100 EM5
IPC POM53509-C
XXXX.2006.12
PRINTED IN U.S.A.
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
1
3
90°
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
5
U-Type Handlebar Only
6 7 8
4. Tighten the four 5 x 28 mm bolt/washers.
TORQUE: 3.6 ft-lb (5 N · m)
5. Make sure the tie straps are positioned as shown.
12
13
9 10
14
11
15
3.9 in (100 mm) 2.4 in (60 mm)
6. Operate the throttle trigger and make sure the throttle operates smoothly.
Cutting-line Head and Shield Installation
Prior to installation, move the ignition switch to the STOP (O) position and disconnect the spark plug cap from the spark plug.
1. Install the cutting-line head debris shield as shown below.
2. Tighten the 5 x 28 mm bolt/washers:
TORQUE: 2.5 ft-lb (3.4 N · m)
5 x 28 mm
BOLT/WASHER (4)
Brush/Wood (50-tooth) Blade and Shield Installation
Prior to installation, move the ignition switch to the STOP (O) position and disconnect the spark plug cap from the spark plug. Wear protective gloves when working around the cutting-line head and saw blade.
1. Install the brush/wood blade debris shield as shown below.
2. Tighten the 5 x 28 mm bolt/washers:
TORQUE: 2.5 ft-lb (3.4 N · m)
5 x 28 mm
BOLT/WASHER (4)
SPACER (2)
[3/32" (2.3 mm) thick]
SPACER (2)
[3/32" (2.3 mm) thick]
CUTTING-LINE
DEBRIS SHIELD
(with cutoff knife)
BRUSH/WOOD BLADE
DEBRIS SHIELD
3. Insert the tip of a 4 mm hex wrench, or equivalent, fully into the gear case hole.
4. Turn the output shaft until you feel the tool drop into the hole in the cover plate/spacer A. Verify the trimmer head does not turn.
5. 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 install.
CUTTING-LINE HEAD
3. Insert a 4 mm hex wrench or equivalent into the gear case hole to prevent the output shaft from turning.
4. Install cover plate/spacer A onto the output shaft as shown.
TIGHTEN
COVER
SPACER B
BLADE
Install with the white markings facing the debris shield.
10 mm LOCK NUT
(left-hand thread)
SPACER B
COVER PLATE/
SPACER A
BLADE
COVER
COVER PLATE/
SPACER A
4 mm hex wrench
OUTPUT SHAFT
(left-hand thread)
GEAR CASE HOLE
OUTPUT SHAFT
(left-hand thread)
4 mm HEX TOOL
5. With the blade cover installed on the blade, install the blade by aligning the center of the blade with the shoulder on cover plate/ spacer A.
6. Install spacer B, the cover, and the 10 mm lock nut as shown.
Be sure to install the blade with the cutting edges of the saw teeth in the direction of rotation; the side with the white markings must face the debris shield.
The output shaft has left-hand threads. Tighten the 10 mm lock nut counterclockwise.
TORQUE: 14 ft-lb (20 N•m)
7. Remove the 4 mm hex wrench or equivalent from the gear case.
5
6
Blade Cover Removal
1. Turn the blade cover slowly until the cover latch is clear of the debris shield.
Unfasten the latch by lifting the tab off the post.
POST
ENGINE OIL
The trimmer is shipped WITHOUT OIL in the engine.
1. Place the trimmer on a level surface, and then remove the oil filler cap/dipstick.
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
POST END
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.
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.
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
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
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.
BEFORE USING YOUR TRIMMER
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
• CONTROLS & EQUIPMENT
• BEFORE OPERATION
• OPERATION
• MAINTENANCE SCHEDULE
CONTROLS AND EQUIPMENT
COMPONENT CONTROLS AND LOCATIONS
Loop Type Handle
CUTTING-LINE HEAD
GEAR CASE
DEBRIS SHIELD
LOOP HANDLE
HARNESS HANGER
THROTTLE SET BUTTON
WITH CUTOFF KNIFE
OPERATOR
PRESENCE
LEVER
CONTROLS
The location and operation of the controls are similar on both the
HHT25S and HHT35S models.
Choke Lever
The choke lever opens and closes the choke valve.
The CLOSED position enriches the fuel mixture for starting a cold engine.
The OPEN position provides the correct fuel mixture for operation after starting, and for restarting a warm engine.
CHOKE LEVER
DRIVE CABLE
FRAME PIPE
CLOSED
OPEN
IGNITION SWITCH
THROTTLE
TRIGGER
U-Type Handlebar
This type is supplied with a cutting-line head, a saw blade, and two debris shields.
IGNITION SWITCH
SAW BLADE
GEAR CASE
THROTTLE
TRIGGER
DRIVE CABLE
FRAME PIPE
THROTTLE
SET BUTTON
DEBRIS SHIELD
FOR BRUSH/
WOOD BLADE
U-TYPE
HANDLEBAR
HARNESS
HANGER
OPERATOR
PRESENCE
LEVER
Ignition Switch
The ignition switch controls the ignition system.
The ignition switch must be in the ON (I) position for the engine to start and run.
Moving the ignition switch to the STOP (O) position stops the engine.
U-type Handle: Loop Handle:
STOP
(O)
STOP (O)
ON (I)
OPERATOR
PRESENCE
LEVER
ON (I)
IGNITION
SWITCH
IGNITION
SWITCH
OPERATOR
PRESENCE
LEVER
Engine
AIR
CLEANER
COVER
CHOKE LEVER
SPARK PLUG
SPARK
ARRESTER
PRIMING
BULB
STARTER
GRIP
Operator Presence Lever
The operator presence lever blocks the throttle trigger. This safety feature prevents unintentional throttle operation if the trimmer is bumped while the operator’s hand is not on the control handle.
When the operator presses the presence lever by gripping the control handle, the trigger moves freely.
FUEL RETURN
TUBE (CLEAR)
FUEL SUPPLY
TUBE (BLACK)
OIL FILLER CAP
FUEL TANK CAP
7
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.
THROTTLE TRIGGER
IDLE
(cutting attachment stops)
FAST
(cutting attachment rotates)
THROTTLE
SET BUTTON
EQUIPMENT
The Honda HHT25S and HHT35S trimmer/brush cutters are supplied
with a shoulder harness and safety glasses. Refer to page 9 for a
description of other equipment and protective clothing you will need.
Shoulder Harness
A full shoulder harness must be worn by the operator of these Honda trimmers/brush cutters when equipped with a blade and debris shield.
If the trimmer is equipped with a cutting-line head and shield with cutoff knife, the operator may wear a single-strap harness.
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.
Before operation, adjust your shoulder harness as described on
SINGLE-STRAP SHOULDER HARNESS
(Loop type handle)
FULL SHOULDER HARNESS
(U-type handlebar)
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.
Priming Bulb
Pressing the priming bulb pumps fuel from the fuel tank to the carburetor. This procedure is necessary for starting 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.
QUICK-RELEASE LATCH
Quick-Release Latch
The shoulder harnesses supplied with these trimmers are equipped with a quick-release latch.
Pull the latch tab upward to detach the trimmer from the harness.
Insert the latch tongue in the slot of the quick-release latch to reattach the trimmer to the harness.
LATCH TAB
PRIMING
BULB
QUICK-RELEASE
LATCH
FUEL RETURN TUBE
(clear plastic tube)
RECOIL STARTER GRIP
Recoil Starter Grip
Pulling the starter grip operates the recoil starter to turn the engine for starting.
Safety Glasses
Safety glasses or goggles that comply with ANSI (American National
Standards Institute) standard Z87.1 must be worn by the operator of any Honda trimmer/brush cutter. The safety glasses supplied with each new Honda HHT25S and HHT35S trimmer/brush cutter comply with this ANSI standard.
SAFETY GLASSES (ANSI Z87.1)
8
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.
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.
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.
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.
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.
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 protectors will help to protect your ears from noise.
Earmuff-style hearing protectors can also protect your ears from thrown objects.
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.
Wear sturdy work boots with good toe protection and nonslip soles.
IS YOUR WORKING AREA READY?
Objects thrown by the trimmer can cause serious injury. Before operating the trimmer, carefully inspect the area and remove all objects that could be thrown by, or entangled in, the cutting attachment, such as rocks, broken glass, nails, wire, or string.
Clear the area of children, bystanders, and pets. Keep all children, bystanders, and pets at least 50 feet (15 meters) away from where the trimmer is being operated.
Even outside a 50-foot (15-meter) radius of the trimmer, there may be a risk of injury from thrown objects, so bystanders should be encouraged to wear eye protection.
If anyone approaches you while you are operating the trimmer, release the throttle trigger and stop the engine.
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.
B
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 pre-operation 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.
Cutting Attachment Inspection
• Look for signs of damage to the cutting attachment (see page 21
and page 19). Replace any cutting attachment and parts that are
worn out, bent, cracked, chipped, or damaged in any way.
• If using a metal blade, be sure it is sharp. A dull blade is more likely to snag and thrust.
• 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 24 and page 21).
• Check that the debris shield is the correct shield for the cutting
attachment (see page 21), and that it is securely installed and in
good condition.
Maintenance Inspection
• Check the oil level (see page 15). Running the engine with a low oil
level can cause engine damage.
• Check the air filter (see page 15). A dirty air filter will restrict air flow
to the carburetor, reducing engine and trimmer performance.
• Check throttle cable free play (see page 16). The cable must be
correctly adjusted and operate smoothly for good throttle control.
• Check the fuel level (see page 17). Starting with a full tank will help
to eliminate or reduce operating interruptions for refueling.
9
ARE YOUR SHOULDER HARNESS AND
TRIMMER CORRECTLY ADJUSTED?
Adjusting the Harness
Adjust the harness so the quick-release latch is at your right hip, as shown.
QUICK-RELEASE
LATCH
FULL SHOULDER
HARNESS
SINGLE-STRAP
SHOULDER HARNESS
Balancing the Trimmer on the Shoulder Harness
Hang the trimmer on the harness hook, and see how it balances.
Adjust the shoulder harness, the harness hanger on the frame pipe, and the loop handle or U-type handlebar, so the handle or handlebars are in a comfortable operating position, and the trimmer hangs with its
cutting attachment a few inches above the ground (see page 11).
OPERATION
SAFE OPERATING PRECAUTIONS
Before operating the trimmer for the first time, please review the
IMPORTANT SAFETY INFORMATION
BEFORE OPERATION
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 Hand-Arm Vibration
Syndrome (HAVS). Symptoms include loss of skin color in the hands and numbness or a painful tingling sensation in the fingers, hands, and arms. Regular users of any power equipment may feel the numbness or pain spontaneously, at any time, not just after using the equipment. If any of these symptoms occur, see a physician immediately.
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
A few inches above the ground
GROUND
CLOSED
OPEN
PRIMING
BULB
FUEL RETURN
TUBE
(clear plastic tube)
2. To start a cold engine, or after refueling an engine that has run out of fuel, press the priming bulb repeatedly until fuel can be seen in the clear plastic fuel return tube.
To restart a warm engine, it is not necessary to press the priming bulb.
3. Set the throttle trigger in the starting position, using the throttle set button.
10
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
STOPPING THE ENGINE
STOP (O)
THROTTLE
TRIGGER
IGNITION
SWITCH
THROTTLE
TRIGGER
ON (I)
THROTTLE
SET BUTTON
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.
1. Release the throttle trigger.
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.
B 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.
TRIMMER/HARNESS QUICK DISCONNECTION
To quickly detach the trimmer from the harness, pull the quick-release latch tab upward.
LATCH TAB
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.
QUICK-RELEASE
LATCH
HOOK
QUICK-RELEASE
LATCH
Insert the latch tongue in the slot of the quick-release latch to reattach the trimmer to the harness.
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.
• Do not overreach.
• Keep the cutting attachment below waist level.
• Keep all parts of your body away from the rotating cutting attachment and hot surfaces.
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.
11
Throttle Operation
Pull the throttle trigger toward the grip to increase engine speed and start the cutting attachment rotation.
The trimmer has the greatest cutting force at maximum engine speed.
Release the throttle trigger to reduce engine speed. At idle, the cutting attachment should coast to a stop.
THROTTLE
TRIGGER
IDLE
(cutting attachment stops)
FAST
(cutting attachment rotates)
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.
The debris shield is equipped with a cutoff knife that automatically removes any excess line that is released.
Manual-Feed Cutting-Line Head
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, and then turn the spool counterclockwise. Pull the two lines until the spool 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. Repeat until the proper length of line is obtained.
To release more line, pull spool and turn counterclockwise.
Using Blades
Refer to the chart on page 18 for appropriate blade applications.
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.
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.
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.
B
WARNING
Rotating cutting lines can cause serious abrasions and cuts, and blades can cut deeply.
• Keep away from the cutting lines or blade whenever the engine is running.
• Always stop the engine, and be sure the cutting line head or blade has stopped turning, before inspecting or handling the cutting lines or blade.
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
SPOOL
HOUSING Cut with the right side to throw debris away from you.
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
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.
12
Blade Thrust (Kickback)
Blade thrust (kickback) is the sudden, forceful, and uncontrolled movement of a blade-equipped trimmer that may occur if the blade binds while cutting or strikes a solid object.
Blade thrust (kickback) throws the trimmer in the direction opposite blade rotation at the point of contact, and the jolt received by the operator can result in further loss of control.
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.
DEBRIS
BLADE
THRUST
TRIMMING
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.
Replace or resharpen dull blades. Dull blades are more likely to bind in the cut and cause blade thrust.
Watch out for hidden obstacles such as rocks, stumps, roots, etc., that could cause the blade to kick back if struck. Blade thrust is more likely to occur in areas where it is difficult to see what is being cut.
Understand the reaction forces of the blade. 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
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.
Brush Clearing
Clearing brush with a brush blade may require both scything and sawing.
Scything with the right side of the blade will direct thrown debris away from you.
Be especially careful to direct debris away from you if recutting an area to shorten stumps. Short lengths of shrub and sapling stumps may tear off and be thrown at high speed.
Sawing heavy brush and saplings with the left side of the blade will reduce the risk of kickback.
Accelerate the engine to maximum speed before starting the cut, and saw through with uniform pressure.
If shrubs or saplings bind the blade, stop the engine and, while supporting the weight of the trimmer, push the shrub or sapling away to free the blade. Do not use the blade as a lever.
SAWING
Operation on Slopes
Start on the low side of a slope, and work upward. This will reduce your risk of slipping and falling, and it will give you a cutting angle that will better enable you to direct debris away from you.
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.
13
SERVICING YOUR TRIMMER
Good maintenance is essential for safe, economical, and trouble-free operation. It will also help reduce air pollution.
B WARNING
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.
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.
To ensure the best quality and reliability, use only new, Honda
Genuine parts or their equivalents for repair and replacement.
Maintenance, replacement, or repair of the emission control devices and systems may be performed by any engine repair establishment or individual, using parts that are “certified” to
EPA standards.
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.
• 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
Item
Before each use
Check the engine oil (page 15)
Check the air cleaner (page 15)
Check the throttle cable (page 16)
Check the cutting attachment
Check the debris shield
Check/tighten nuts, bolts, and fasteners
Check the shoulder harness quick release
First month or
10 hours
Change the engine oil (page 15)
Every 3 months or
25 hours
Clean the air filter element (page 15)
2
Every 6 months or
50 hours
Change the engine oil (page 15)
2
Clean the air filter element (page 15)
2
Check/lubricate the drive cable
3
Lubricate the gear case
3
Check the clutch shoes and drum
3
Check the engine cooling fins
Every year or 100 hours
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
B WARNING
Failure to properly follow maintenance instructions and precautions can cause you to be seriously hurt or killed.
Always follow the procedures and precautions in the owner's manual.
Every 2 years or
300 hours
Every 2 years
Perform the 100-hour service items plus:
Replace the spark plug (page 16)
Clean the combustion chamber
3
Check the fuel tubes and replace if necessary
3
Check the oil tube and replace if necessary
3
Safety Precautions
• Make sure the engine is off before you begin any maintenance or repairs. This will eliminate several potential hazards:
— Carbon monoxide poisoning from engine exhaust.
Be sure there is adequate ventilation whenever you operate the engine.
— Burns from hot parts.
Let the engine and exhaust system cool before touching.
— Injury from moving parts.
Do not run the engine unless instructed to do so.
• Read the instructions before you begin, and make sure you have the tools and skills required.
1. Log the hours of operation to determine the proper maintenance interval.
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.
14
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.
OIL FILLER
CAP/DIPSTICK
FILLER OPENING
Engine Oil Recommendations
Oil is a major factor affecting performance and service life. Use
4-stroke automotive detergent oil.
SAE 10W-30 is recommended for all temperatures within the recommended operating range for these trimmers. The recommended operating range extends from 23° ~ 104°F (-5° ~ 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.
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.
1. Remove the filler cap/dipstick and wipe it clean.
2. Insert and remove the dipstick without screwing it into the filler opening. Check the oil level shown on the dipstick.
3. If the oil level is low, fill to the edge of the oil filler hole with the recommended oil (see page 15). To avoid overfilling or underfilling, be sure the engine is in a level position, as shown.
NOTICE
Running the engine with too little or too much oil can cause engine damage.
4. Screw in the oil filler cap/dipstick securely.
Engine Oil Change
Drain the used oil while the engine is warm. Warm oil drains quickly and completely.
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 .
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.
FILLER
OPENING
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, pour it on the ground, or pour it 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.
FILTER
AIR CLEANER
COVER
LATCH
TAB
RETAINING TABS
15
Throttle Cable Inspection
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.
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.
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.
5/32 in (4 mm)
HEX WRENCH
(commercially available)
5 x 12 mm
HEX BOLT
SPARK PLUG
CABLE END
FREE PLAY
1/16 ~ 1/8 in
(1.0 ~ 3.0 mm)
SPARK PLUG
CAP
TOP
COVER
LOCK NUT
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.
2. Disconnect the spark plug cap, and remove any dirt from around the spark plug area.
3. Remove the spark plug with a 5/8-inch spark plug wrench.
4. Inspect the spark plug. Replace it if the electrodes are worn, or if the insulator is cracked or chipped.
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.
SIDE ELECTRODE GAP
0.024 ~ 0.028 in
(0.60 ~ 0.70 mm)
SEALING
WASHER
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.
16
Spark Arrester Service
The spark arrester must be serviced every 100 hours to keep it functioning as designed.
If the engine has been running, the muffler will be very hot. Allow the muffler to cool before servicing the spark arrester.
1. Remove the 5 x 12 mm hex bolt and top cover.
5/32 in (4 mm) HEX WRENCH
(commercially available)
5 x 12 mm
HEX BOLT
TOP COVER
MUFFLER
2. Remove the two 4 x 6 mm self-tapping screws from the spark arrester, and remove the spark arrester from the muffler.
SPARK
ARRESTER
FUEL SYSTEM
Refueling
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 covered by warranty.
If your equipment will be used on an infrequent or intermittent basis,
please refer to the fuel section of the STORAGE chapter (page 2
additional information regarding fuel deterioration.
B
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.
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.
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.
MUFFLER
4 x 6 mm
SELF-TAPPING
SCREWS
FUEL
TANK CAP
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
4. Install the spark arrester, top cover, and 5 x 12 mm hex bolt and tighten securely.
FUEL
TANK
MAXIMUM
FUEL
LEVEL
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.
17
Fuel Filter and Fuel Tank Cleaning
1. Remove the fuel tank cap and empty the fuel tank into an approved gasoline container. Use a funnel to avoid spilling gasoline.
RECOMMENDED CUTTING
ATTACHMENTS
CUTTING ATTACHMENT APPLICATIONS
ATTACHMENTS FOR TRIMMING GRASS AND LIGHT WEEDS
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.
FUEL SUPPLY
TUBE (black)
FUEL
FILTER
ATTACHMENTS FOR CUTTING THICK WEEDS AND LIGHT
BRUSH
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.
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.
ATTACHMENTS FOR CUTTING WOODY BRUSH, SHRUBS,
SAPLINGS
ENGINE COOLING FINS
2. Install the top cover and 5 x 12 mm hex bolt, and then tighten securely.
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.
18
BLADES
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.
Weed/Brush Blades
These metal blades have chisel-shaped teeth that are used for cutting through field grass, thick weeds, and light brush. They are not designed for sawing woody material. The teeth must be sharp for good results.
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.
Blade Cover
Use the blade cover to protect yourself from injury while installing or removing the blade and to protect the blade from damage during storage.
Blade Inspection
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.
NORMAL
BENT
B
WORN
CRACKED
WARNING
A worn, damaged or cracked blade can break, and pieces of the damaged blade can become dangerous projectiles.
A dull blade is more likely to snag and thrust (kickback).
Inspect the blade regularly, and do not operate the trimmer with a dull, worn, or damaged blade.
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.
Blade Removal and Installation
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.
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 Honda Genuine replacement lock nut.
BLADE SHARPENING: To avoid weakening the blade or causing imbalance or poor cutting, the blade should be sharpened by trained staff at a Honda trimmer servicing dealer.
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.
19
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.
SPACER B
COVER
COVER PLATE/
SPACER A
TIGHTEN LOOSEN
10 mm LOCK NUT
(left-hand thread)
BLADE
Brush/Wood Blade Cover Installation and Removal
1. Install the blade cover over the blade so half the blade is covered.
2. 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.
3. Turn the blade cover slowly until the post end clears the debris shield.
4. Reposition the post end over the blade.
5. With the blade cover fully seated on the blade, latch the tab over the post.
Remove the blade cover in the reverse order of installation.
BLADE
DEBRIS
SHIELD
POST END
BLADE COVER
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)
DEBRIS SHIELDS
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.
BLADE
DEBRIS SHIELDS
CUTTING-LINE
GRASS/WEED
BLADE, WEED/
BRUSH BLADE
(optional part)
CUTOFF KNIFE
BRUSH/WOOD
BLADE
20
Changing the Debris Shield
Refer to the applicable illustration for removing and installing the debris shields. Tighten the spacer bolts/washers to the specified torque.
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)
CUTTING-LINE HEADS
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.
A cutting-line head containing nylon monofilament line and a debris shield with a cutoff knife is standard equipment. The shield’s cutoff knife automatically removes any excess line that is released from the cutting head.
The U-type handlebar trimmers are supplied with two different debris shields. Use the debris shield with the cutoff knife when the cutting-line head is installed.
Nylon monofilament line is suitable for cutting grass and ordinary weeds, but not brush and woody growth.
CUTTING-LINE HEAD NYLON MONOFILAMENT LINE
5 x 28 mm
BOLT/WASHER (4)
SPACER (2)
[3/32" (2.3 mm) thick]
BRUSH/WOOD
BLADE DEBRIS
SHIELD
CUTOFF KNIFE
(inside the debris shield)
CUTTING-LINE HEAD
DEBRIS SHIELD
Inspection
Make sure the nylon line is only sticking out of the metal eyelets on the head. If any of the line has come off the spool, follow the Installing
Replacement Nylon Line instructions in this section to disassemble the spool and replace the line.
Examine the entire head area, including the debris shield, and clear or clean it free from dirt, debris, loose string, wire, or any other foreign materials.
For the manual feed head, make sure the three-sided knob is
correctly tightened (page 22). For the semi-matic head, verify the
spool is locked in place (page 23). For both head styles, check for any
cracks in the plastic and replace any damaged parts.
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 Honda Genuine replacement nylon trimmer line or equivalent.
Honda trimmers come standard with low noise line. Using non-Honda line may result in increased noise levels.
For original, factory-installed Honda cutting-line heads, use only nylon monofilament line in the line sizes shown below.
HHT25S
HHT35S
0.095 in
0.095 or 0.105 in
See page 29 for replacement parts information.
21
Manual-Feed Cutting-Line Head
Line is released from the cutting head by manually pulling and turning the spool with the trimmer engine stopped.
HOUSING
To release more line, pull the spool and turn it counterclockwise.
SPOOL
1. Clean any mud, dirt, debris, etc. from the area around the trimmer head; otherwise, it will be more difficult to service.
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.
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.
6. Feed both line ends through the metal eyelets in the housing.
NOTCHES
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.
HOUSING
SHAFT
SPOOL
METAL
EYELET (2)
7. Install the spring and knob. Rotate the knob in the direction of the arrow and hand tighten securely.
SPRING
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.
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.
22
NYLON
LINE
SPOOL
Semi-Matic (Bump-Feed) Cutting-Line Head
Line is released from the cutting head by bumping the spool on hard ground while the head is spinning. Do not tap the cutting-line head on pavement or concrete.
SPOOL
HOUSING
1. Clean any mud, dirt, debris, etc., from around the trimmer head area; otherwise, it will be more difficult to service.
2. Locate the half-round locking hole on the spool.
SPOOL
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.
HALF-ROUND
LOCKING HOLE
3. It may be necessary to lightly rotate the spool in the direction of the arrow about an 1/8 turn until the spool stops.
4. Hold the housing securely, then continue to rotate the spool in the direction of the arrow an additional 1/4 inch or the width of the channel to unlock the spool from the housing.
CHANNEL
8. When you have about 6 inches (150 mm) of line remaining, press the lines into the two notches on the bottom of the spool. This will hold the lines on the spool for reassembly.
9. Feed both line ends through the metal eyelets in the housing.
NOTCHES
It may be necessary to push down and rotate the outer drive until the round lugs align with the metal eyelets.
10.Align the channels in the spool with the round lugs on the outer drive. With the channels and notches aligned with the metal eyelets, slide the spool into the housing with a continuous snap-in motion. Be careful not to let the line slip under the spool. When the spool reaches the bottom of the housing, the lines should snap out of the spool notches.
If you are not sure if the lines have snapped out of the notches, gently pull the spool away from the housing about an 1/8 inch to inspect the lines. If necessary, gently pull each line until your hear it snap out of the notch.
OUTER
DRIVE
CHANNEL (2)
HOUSING
5. Lift the spool out of the housing and remove any remaining line from the spool.
6. Measure approximately 20 feet (6 meters) of new line, then thread one end through the hole in the ridge on the spool.
Pull the line until the two lengths are equal.
ROUND LUG (2)
METAL
EYELET (2)
11.Hold the housing and rotate the spool in the direction of the arrow to lock the round lug into the half-round locking hole. Trim the lines so they are equal length.
SPOOL
NYLON LINE
7. Wind both lines tightly and evenly from side to side ignoring the ridge. Feed the line while turning the spool in the direction of the arrow. Do not allow the line to get twisted.
HALF-ROUND
LOCKING HOLE
23
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.
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.
Cleaning
Wash the trimmer, including the area around the trimmer head.
Wash the engine by hand and be careful to prevent water from entering the air cleaner.
4 mm HEX WRENCH
(commercially available)
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
SPACER B
COVER PLATE/
SPACER A
REMOVAL
DIRECTION
TRIMMER
HEAD
GEAR CASE HOLE
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.
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.
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.
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.
Before washing the trimmer head area, disconnect the spark plug cap from the spark plug.
After washing the trimmer, wipe dry all accessible surfaces.
Start the engine outdoors and let it run until it reaches normal operating temperature to evaporate any water remaining on the engine.
Stop the engine and allow it to cool.
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
NOTICE
Depending on the region where you operate your equipment, fuel formulations may deteriorate and oxidize rapidly. Fuel deterioration and oxidation can occur in as little as 30 days and may cause damage to the carburetor and/or fuel system. Please check with your servicing dealer for local storage recommendations.
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.
The DISTRIBUTORS LIMITED WARRANTY does not cover fuel system damage or engine performance problems resulting from neglected storage preparation.
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.
24
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.
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.
Draining the Fuel Tank and Carburetor
Disconnect the spark plug cap. Make sure the ignition switch is in the
STOP (O) position.
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.
TRANSPORTING
BEFORE LOADING
If the engine has been running, allow it to cool for at least 15 minutes before loading the trimmer on the transport vehicle. A hot engine and exhaust system can burn you and can ignite some materials.
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.
B 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 flames away.
• Handle fuel only outdoors.
• WIpe up spills immediately.
Engine Oil
Change the engine oil (see page 15).
Carburetor & Air Cleaner
Clean the air filter (see page 15) and move the choke lever to the
CLOSED position.
Blade
If a blade is installed, put the blade cover on the blade.
Engine Cylinder
Remove the spark plug (see page 16). 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.
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
Check your trimmer as described in the BEFORE OPERATION section of this manual.
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.
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.
Drain the fuel tank and carburetor, refuel with fresh gasoline.
Bad fuel, trimmer stored without treating or draining gasoline, refueled with bad gasoline.
Spark plug is faulty, fouled, or has incorrect gap.
Gap or replace the spark plug.
Fuel filter clogged, carburetor malfunction, ignition malfunction, valves stuck, etc.
Replace or repair faulty components as needed.
25
Low Power or Engine Speed Won’t Increase
Possible Cause Correction
Air filter is dirty or clogged.
Clean or replace the air filter.
Fuel filter is dirty or clogged.
Replace the fuel filter.
Throttle cable is out of adjustment, broken, or bent.
Adjust the cable or replace it if necessary.
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.
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 Correction
Worn or broken clutch, broken drive cable, worn or broken gear case parts.
Replace or repair faulty components as needed.
Excessive Vibration
Possible Cause
Loose cutting-line head or blade nut.
Cutting-line is not wound properly or has unequal line lengths.
Damaged blade.
Correction
Tighten the cutting-line head or blade nut securely.
Rewind the cutting-line and cut to equal lengths.
Replace the blade.
TECHNICAL INFORMATION
This section contains important information about serial number locations, high altitude operation, and emission control systems.
Serial Number Locations
ENGINE
SERIAL
NUMBER
FRAME SERIAL NUMBER
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 28).
Engine serial number: _____________________________
Frame serial number: ______________________________
Date of purchase: _________________________________
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.
26
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 emission 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 emission control systems.
The following instructions and procedures must be followed in order to keep the emissions from your Honda engine within the emission standards.
Tampering and Altering
Tampering with or altering the emission control system may increase emissions beyond the legal limit. Among those acts that constitute tampering are:
• Removal or alteration of any part of the intake, fuel, or exhaust systems.
• Altering or defeating the speed-adjusting mechanism to cause the engine to operate outside its design parameters.
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
• Misfiring or backfiring under load
• Afterburning (backfiring)
• Black exhaust smoke or high fuel consumption
Replacement Parts
The emission control systems on your new Honda engine were designed, built, and certified to conform with EPA, California and
Canadian emission regulations. We recommend the use of Honda
Genuine parts whenever you have maintenance done. These original-design replacement parts are manufactured to the same standards as the original parts, so you can be confident of their performance. The use of replacement parts that are not of the original design and quality may impair the effectiveness of your emission 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 emission regulations.
Maintenance
Follow the MAINTENANCE SCHEDULE
schedule is based on the assumption that your machine will be used for its designed purpose. Sustained high-load or high-temperature operation, or use in unusually wet or dusty conditions, will require more frequent service.
Air Index
An Air Index Information hang tag/label is applied to engines certified to an emission durability time period in accordance with the requirements of the California Air Resources Board.
The bar graph is intended to provide you, our customer, the ability to compare the emissions performance of available engines. The lower the Air Index, the less pollution.
The durability description is intended to provide you with information relating the engine’s emission durability period. The descriptive term indicates the useful life period for the engine’s emission control system. See your EMISSION CONTROL SYSTEM WARRANTY
(page 30) for additional information.
Descriptive Term
Moderate
Intermediate
Extended
Applicable to Emission
Durability Period
50 hours (0 ~ 80 cc)
125 hours (greater than 80 cc)
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)
SPECIFICATIONS
FEATURES
HHT25SLTAT
Loop handle
U-type handlebar
Manual feed head
Semi-matic feed head
• optional
•
Saw blade optional
1
1
Requires optional Barrier Kit
HHT35SLTAT HHT35SUKAT
• optional
• optional
1
•
• optional
•
27
DIMENSIONS
Handle Installed
Length Loop Manual feed head
Semi-matic feed head
U-type
With saw blade installed
Width Loop
Height
Dry weight
U-type
Loop
U-type
Loop
U-type
HHT25S
73.4 in
(1865 mm)
73.4 in
(1865 mm)
74.4 in
(1890 mm)
12.8 in
(325 mm)
23.6 in
(600 mm)
9.6 in
(245 mm)
15.9 in
(405 mm)
13.0 lb
(5.9 kg) n/a
HHT35S
73.8 in
(1875 mm)
73.8 in
(1875 mm)
75.0 in
(1905 mm)
TUNEUP
ITEM
Spark plug gap
Valve clearance
(cold)
SPECIFICATION
0.024 ~ 0.028 in
(0.60 ~ 0.70 mm)
Intake: 0.08 ± 0.02 mm
Exhaust: 0.11 ± 0.02 mm
MAINTENANCE
Refer to page 16.
See your authorized Honda servicing dealer.
ENGINE
Model
Engine type
Displacement
Bore & stroke
Ignition system
Spark plug
Starting system
Fuel
Fuel tank capacity
Oil capacity
Carburetor type
Air cleaner
Idle speed
GX25 GX35
4-stroke, overhead-cam, single-cylinder
1.5 cu in (25.0 cc)
1.4 x 1.0 in
(35 x 26 mm)
2.2 cu in (35.8 cc)
1.5 x 1.2 in
(39 x 30 mm)
Transistorized magneto
NGK: CMR5HSB
Recoil
Unleaded gasoline (86 octane or higher)
0.15 US gal,
19.6 fl.oz. (0.58 l
)
2.7 fl oz (80 cc)
0.17 US gal,
21.3 fl oz (0.63
l
)
3.4 fl oz (100 cc)
Diaphragm type (overflow return) with fuel pump
Single element, semi-dry
3,100 ± 200 rpm
12.8 in
(325 mm)
23.6 in
(600 mm)
10.2 in
(260 mm)
15.9 in
(405 mm)
14.8 lb
(6.7 kg)
15.4 lb.
(7.0 kg)
FRAME
Model
Ignition switch
Throttle control
Frame pipe
Drive type
Drive bushing
Gear case
Clutch
OD
Thickness
Material
OD
Engagement
Material
Length
Ratio
Type
Size
Engagement
Drive
Type
GX25 GX35
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 : 1
(input : output shaft)
Ball bearings, helical cut gears, no shims required
2.18 in (55.2 mm) 3.09 in (78.4 mm)
4,200 ± 200 rpm
Square female
Centrifugal
CONSUMER INFORMATION
Dealer Locator Information
To find an Authorized Honda Servicing Dealer anywhere in the United
States:
Call (800) 426-7701 or visit our website: www.hondapowerequipment.com and click on Dealer Locator.
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. - 7:00 p.m. ET
When you write or call, please give us this information:
• Model and serial numbers (page 26)
• 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
28
Honda Publications
These publications will give you additional information for maintaining and repairing your trimmer.
Shop Manual
This manual covers complete maintenance and overhaul procedures.
It is intended to be used by a skilled technician. Available through your Honda dealer or through Helm Inc. at (888) 292-5395 or visit: www.hondapowerequipment.com and click on Product Manuals.
Parts Catalog
This manual provides complete, illustrated parts lists, and is available through your Honda dealer.
Frequently Asked Questions
The Honda Power Equipment web site provides additional information for users of Honda equipment. Visit www.hondapowerequipment.com and click on FAQs.
Replacement Parts, Optional Equipment, and
Service Items
Contact an authorized Honda servicing dealer to purchase any of these (or other) Honda Genuine items.
Replacement Parts
Item
Air cleaner element
Spark plug
Cutting-line
Part Number Notes
17211-Z0H-000
17211-Z0Z-000
31915-Z0H-003
HHT25
HHT35
NGK: CMR5HSB
72512-095-0855Q 0.095" spool
3 lb (855 ft)
72512-095-0285Q 0.095" doughnut
1 lb (285 ft)
Optional Equipment
Item
Fast funnel
No-Spill
®
gas can
Barrier kit
Service Items
Item Part Number
SAE 10W-30 engine oil 08207-10W30
Fuel stabilizer
Part Number
08C25-FST-000
06176-1405
06631-VH8-740
08732-0001
Notes
Disposable and spill-free 3-pack
2.5 gallon spill-control type
(CARB)
Use with saw blade (loop handle type)
Notes
Honda Genuine recommended oil
1 qt.
For storage,
8 oz.
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.
PRODUCTS COVERED
BY THIS WARRANTY
LENGTH OF WARRANTY
(from date of original retail purchase)
Noncommercial/
Nonrental
Commercial/
Rental
HHT25, HHT35
(limited lifetime warranty on drive cable)*
24 months 12 months
* Limited lifetime drive cable warranty is valid for the original purchaser only.
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.
To Obtain Warranty Service:
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.
American Honda Motor Co., Inc.
Power Equipment Customer Relations Dept.
4900 Marconi Drive
Alpharetta, GA 30005-8847
Telephone: (770) 497-6400
Exclusions:
This warranty does not extend to parts affected or damaged by 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.
Any product that has ever been declared a total loss or sold for salvage by a financial institution or insurer.
Disclaimer of Consequential Damage and Limitation of Implied
Warranties:
American Honda disclaims any responsibility for loss of time or use of the product, transportation, commercial loss, or any other incidental or consequential damage. Any implied warranties are limited to the duration of this written limited warranty. 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.
29
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
Accessories
Replacement Parts
Apparel
LENGTH OF WARRANTY
(from date of original retail purchase)
Noncommercial/
Nonrental
12 months
6 months
6 months
Commercial/
Rental
3 months
3 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. Installing Parts and Accessories on non-Honda products or engines voids this warranty.
2. You must be the first retail purchaser. This warranty is not transferable to subsequent owners.
What American Honda Will Repair or Replace Under Warranty:
American Honda will repair or replace, at its option, any 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.
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.
To Obtain Warranty Service:
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 28 for contact information.
Exclusions:
This warranty does not extend to accessories, parts, or apparel affected or damaged by collision, normal wear, use in an application for which the product was not designed, or any other misuse, neglect, incorporation or use of unsuitable attachments or parts, unauthorized alteration, improper installation, or any causes other than defects in material or workmanship of the product.
Installing Parts and Accessories on non-Honda products or engines voids this warranty.
Disclaimer of Consequential Damage and Limitation of Implied
Warranties:
American Honda disclaims any responsibility for loss of time or use of the product, or the power equipment on which the product is installed, transportation, commercial loss, or any other incidental or consequential damage. Any implied warranties are limited to the duration of this written warranty. Some states do not allow limitations on how long an implied warranty lasts and/or do not allow the exclusion or limitation of incidental or consequential damages, so the above exclusions and limitations may not apply to you. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state.
30
EMISSION CONTROL SYSTEM WARRANTY
Your new Honda Power Equipment engine complies with the U.S. EPA,
Environment Canada, and State of California emission regulations (models certified for sale in California only). 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.
Your Warranty Rights and Obligations:
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
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.
Products can be identified by “Not for sale in California” decal.
All of the United States and Canada
Honda must warrant the emission control system on your power equipment engine for the period of time listed below provided there has been no abuse, neglect, or improper maintenance of your power equipment engine. Where a warrantable condition exists, Honda will repair your power equipment engine at no cost to you including diagnosis, parts, and labor.
Your emission control system may include such parts as the carburetor or fuel injection system, the ignition system, and catalytic converter. Also included may be hoses, connectors, and other emission-related assemblies. Products can be identified by “Not for sale in California” decal.
Manufacturer's Warranty Coverage:
The 1995 and later power equipment engines are warranted for two years or the length of the Honda Distributor’s Limited Warranty, whichever is longer. If any emission-related part on your engine is defective, the part will be repaired or replaced by Honda.
Owner's Warranty Responsibility:
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.
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.
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 31. Normal maintenance items, such as spark plugs and filters, that are
on the warranted parts list are warranted up to their required replacement interval only.
Honda will also replace other engine components damaged by a failure of any warranted part during the warranty period.
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.
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 28 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, 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.
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
Fuel Metering
Evaporative
Exhaust
Air Induction
Ignition
PARTS DESCRIPTION
Carburetor assembly, (includes starting enrichment system), Engine temperature sensor, Engine control module, Fuel regulator, Intake manifold
Fuel tank, Fuel cap, Fuel hoses, Vapor hoses,
Carbon canister, Canister mounting brackets, Fuel strainer, Fuel cock, Fuel pump, Fuel hose joint,
Canister purge hose joint
Catalyst, Exhaust manifold
Air filter housing, Air filter element *
Flywheel magneto, Ignition pulse generator,
Crankshaft position sensor, Power coil, Ignition coil assembly, Ignition control module, Spark plug cap,
Spark plug *
Crankcase breather tube, Oil filler cap Crankcase Emission
Control
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
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.
QUICK REFERENCE INFORMATION
Fuel
Engine oil
Type
Type
Unleaded gasoline with a pump octane rating of 86 or higher
SAE 10W-30, API SJ or later
NGK: CMR5HSB Spark plug
Maintenance
Type
Before each use
Check throttle cable (page 16)
Check cutting attachment (page 18)
Check nuts, bolts, fasteners
Check shoulder harness, quick
First 10 hours Change engine oil (page 15)
Subsequent
Refer to the Maintenance Schedule
31
Printed on
Recycled Paper
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