Honda HHT25S, HHT35S Owner's Manual

OWNER’S MANUAL

HHT25S • HHT35S

TRIMMER/

BRUSH CUTTER

Before operating the trimmer for the first time, please read this Owner’s Manual. Even if you have operated other trimme rs, take time to become familiar with how this trimmer works and practice in a safe area until you build up your skills.

Click to Save As

QUICK FIND

Air Filter............................... ... ............... 16

Contact Honda....................................... 29

Cutting-Line Heads............................... 22

Find a Dealer ......................................... 29

FOR YOUR SAFETY.............................. 2

PARTS AND CONTROLS...................... 3

INITIAL TRIMMER SETUP..................... 4

Install the Handlebar (U-Type)............ 4

BEFORE EACH OPERATION

Check Your Trimmer........................... 7

Check Your Trimming Area................. 7

Equipment........................................... 7

Check the Engine Oil Level................. 8

Add Fuel.............................................. 9

OPERATION

Safe Trimming Practices..................... 9

Attachments and Modifications......... 11

Operating the Controls...................... 12

Starting the Engine............................ 13

Stopping the Engine.......................... 13

SERVICING YOUR TRIMMER

Maintenance Safety........................... 15

Maintenance Schedule...................... 15

Fuel ..........................................................9

Fuel System Maintenance......................28

Maintenance Schedule.......................... 15

Oil Change ............................................ 16

Oil Change ........................................ 16

Air Filter....................................... ...... 16

Spark Plug......................................... 17

Spark Arrester................................... 18

CUTTING ATTACHMENTS.................. 19

Blades ............................................... 20

Debris Shields................................... 21

Cutting-Line Heads............................ 22

TRANSPORTING ................................. 24

Loading.............................................. 24

STORAGE

Fuel ................................................... 24

Oil...................................................... 24

Cleaning............................................ 24

Storage Location............................... 25

Removing From Storage................... 25

TROUBLESHOOTING

Engine Will Not Start......................... 25

Oil Level Check.........................................8

Spark Plug............................................. 17

Warranty Coverage.................................30

Loss of Power or Engine Speed Won’t

Increase................................................ 25

Cutting-Line Head Won’t Stop Turning. Cutting-Line or Blade Head Won’t Turn 25

TECHNICAL INFORMATION

Serial Number Locations...................... 25

High Altitude Operation........................ 26

Emission Control System..................... 26

Air Index............................................... 26

Specifications....................................... 27

FUEL SYSTEM MAINTENANCE............. 28

CUSTOMER INFORMATION

Parts, Accessories, and Service Items. 29

Dealer Locator Information................... 29

How to Contact Honda......................... 29

Honda Publications .............................. 29

DISTRIBUTOR’S LIMITED WARRANTY. 30

EMISSION SYSTEM WARRANTY.......... 31

PRODUCT REGISTRATION................... 35

00X31VL3 D220

QUESTIONS?

Contact your Honda dealer.

There is a dealer locator at

http://powerequipment.honda.com

WELCOME

NOTICE

Congratulations on your selection of a Honda trimmer/brush cutter! We are certain you will be pleased with your purchase of one of the finest trimmers on the market. We want to help you get the best results from your new trimmer and to operate it safely. This manual contains information on how to do that; please read it carefully.

When your trimmer needs scheduled maintenance, keep in mind that authorized Honda Power Equipment servicing dealership personnel are specially trained in servicing Honda trimmers and are supported by the parts and service divisions of American Honda.

Please read the DISTRIBUTOR’S LIMITED WARRANTY on page 30 and the EMISSION CONTROL SYSTEM WARRANTY on page 31 to fully understand what is covered by warranty and your responsibilities of ownership.

 WARNING 

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or reproductive harm.

The Honda HHT25S and HHT35S trimmer/brush cutters are designed to cut grass, weeds, brush, and/or wood if equipped with an appropriate cutting attachment. Other uses can result in injury to the operator or damage to the trimmer and other property.

These Honda trimmers are intended for use by gardening professionals. Never allow children to operate the trimmer.

Most injuries or property damage can be prevented if you follow all instructions in this manual and on the trimmer. The most common hazards are discussed below, along with the best way to protect yourself and other.

Important Message to Employers

FOR YOUR SAFETY

Your safety and the safety of others are very important. We have provided important safety messages in this manual and on the trimmer. This information alerts you to pot e ntial 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. Y ou must use your own good judgment.

Safety Instructions

You will find important safety information in a variety of forms:

• Safety Labels – on the trimmer .

• Instructions – how to use this trimmer correctly and safely.

• Safety Messages – preceded by a safety ale rt  symbol and one

of three signal words: DANGER, WARNING, or CAUTION. Each message tells you what the hazard is, what can happen, and what you can do to avoid or reduce injury. These signal words mean:

You WILL be KILLED or

 DANGER

SERIOUSLY HURT if you don't follow instructions.

As an employer, you have special responsibilities to the people who work for you.

Before you ask anyone to operate this trimmer, you need to determine whether the person is old enough, large enough, and strong enough to safely handle and control the trimmer.

If you decide the employee is ready, make sure the employee reads and understands all instructions and warnings in this manual and on the labels before operating the trimmer.

Allow adequate time for hands-on training by a qualified instructor, and personally supervise practice sessions until you feel sure the employee is ready to operate the machine.

Also be sure employees wear proper clothing and have eye protection and any other gear that may be required by local ordinances or your insurance company.

Remember, too, that you are responsible for keeping the trimmer properly maintained and in safe operating condition.

Your commitment to safety on the job can help prevent injuries and result in longer and more productive years of service.

You CAN be KILLED or

 WARNING

 CAUTION

• Damage Prevention Messages – You will also see other important messages that are preceded by the word NOTICE. This word means:

Your trimmer or other property can be damaged if you don’t follow instructions.

SERIOUSLY HURT if you don't follow instructions.

You CAN be HUR T if you don't follow instructions.

Safety Label Locations

LOOP HANDLE AND U-TYPE HANDLE TYPES

HARNESS HANGER

DEBRIS SHIELD WITH CUTOFF KNIFE

DRIVE CABLE FRAME PIPE

LOOP HANDLE

THROTTLE SET BUTTON

OPERATOR PRESENCE LEVER

THROTTLE TRIGGER

IGNITION SWITCH

CUTTING-LINE HEAD

GEAR CASE

IGNITION SWITCH

THROTTLE TRIGGER

SAW BLADE

OPERATOR PRESENCE LEVER

HARNESS HANGER

DRIVE CABLE FRAME PIPE

U-TYPE HANDLEBAR

THROTTLE SET BUTTON

DEBRIS SHIELD FOR BRUSH/ WOOD BLADE

SPARK PLUG

AIR CLEANER COVER

PRIMING BULB

OIL FILLER CAP

STARTER GRIP

SPARK ARRESTER

FUEL RETURN TUBE (CLEAR)

FUEL SUPPLY TUBE (BLACK)

FUEL TANK CAP

CHOKE LEVER

These labels warn you of potential hazards that can cause serious injury. Read them carefully. If a label comes off or becomes hard to read, contact an authorized Honda servicing dealer for a replacement.

PARTS AND CONTROLS

Loop Type Handle

U-Type Handle

Engine

INITIAL TRIMMER SETUP

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.

As you read this manual, you will find information preceded by a

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 (page30) and the Emission Control System Warranty (page31) to fully understand its coverage and your responsibilities of ownership.

When your trimmer/brush cutter needs scheduled maintenance, keep in mind that your Honda servicing dealer is specially trained in servicing Honda trimmers/brush cutters. Your Honda servicing dealer is dedicated to your satisfaction, and will be pleased to answer your questions and concerns.

SAFETY MESSAGES

Your safety and the safety of others are very important. We have provided important safety messages in this manual and on the trimmer/brush cutter. This information alerts you to potential hazards that could hurt you or others. Please read these messages carefully.

Of course, it is not practical or possible to warn you about all the hazards associated with operating or maintaining a trimmer/brush cutter. You must use your own good judgment.

You will find important safety information in a variety of forms:

• Safety Labels – on the trimmer/brush cutter.

• Safety Messages – preceded by a safety alert  symbol and one

of three signal words: DANGER, WARNING, or CAUTION. These signal words mean:

• Safety Headings—such as IMPORTANT SAFETY

INFORMATION.

• Safety Section—such as TRIMMER SAFETY.

• Instructions – how to use this trimmer/brush cutter correctly and

safely.

This entire book is filled with important safety information—please read it carefully.

CONTENTS

TRIMMER SAFETY........................................................................................................2

IMPORTANT SAFETY INFORMATION..................................................................2

ATTACHMENTS & MODIFICATIONS.....................................................................2

IMPORTANT MESSAGE TO EMPLOYERS...........................................................2

SAFETY LABEL LOCATIONS.................................................................................3

RECOMMENDED CUTTING ATTACHMENTS..............................................................3

CUTTING-LINE HEADS AND SHIELDS.................................................................3

BLADES AND SHIELDS..........................................................................................4

CUTTING ATTACHMENT APPLICATIONS............................................................5

ASSEMBLY.....................................................................................................................5

IMPORTANT SAFETY PRECAUTIONS..................................................................5

UNPACKING...........................................................................................................5

LOOSE PARTS.......................................................................................................6

U-TYPE HANDLEBAR.............................................................................................6

SAW BLADE............................................................................................................7

ENGINE OIL............................................................................................................8

CONTROLS AND EQUIPMENT.....................................................................................9

BEFORE OPERATION.................................................................................................11

OPERATION.................................................................................................................12

SAFE OPERATING PRECAUTIONS....................................................................12

STOPPING THE ENGINE.....................................................................................13

TRIMMER/HARNESS QUICK DISCONNECTION................................................14

TRIMMER OPERATION........................................................................................14

SAFE OPERATING PRACTICES..........................................................................15

OPERATING TIPS.................................................................................................15

SERVICING YOUR TRIMMER.....................................................................................16

MAINTENANCE SAFETY......................................................................................16

MAINTENANCE SCHEDULE................................................................................17

ENGINE.................................................................................................................17

CUTTING ATTACHMENTS...................................................................................18

FUEL SYSTEM......................................................................................................24

STORAGE.....................................................................................................................25

TRANSPORTING..........................................................................................................26

TAKING CARE OF UNEXPECTED PROBLEMS.........................................................26

TECHNICAL INFORMATION........................................................................................27

EMISSION CONTROL SYSTEM...........................................................................27

SPECIFICATIONS.................................................................................................28

CONSUMER INFORMATION.......................................................................................29

DISTRIBUTOR'S LIMITED WARRANTY..............................................................30

ACCESSORIES, REPLACEMENT PARTS, AND APPAREL WARRANTY..........30

EMISSION CONTROL SYSTEM WARRANTY.....................................................31

 DANGER

You WILL be KILLED or SERIOUSLY HURT if you don't follow instructions.

 WARNING

You CAN be KILLED or SERIOUSLY HURT if you don't follow instructions.

 CAUTION

You CAN be HURT if you don't follow instructions.

NOTICE

OWNER’S MANUAL

HHT25S • HHT35S

Trimmer/Brush Cutter

 WARNING: 

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

31VL3D10 00X31-VL3-D100

EM5

POM53509-C XXXX.2006.12

PRINTED IN U.S.A.

IPC

13 14

5 6 8

16 17

Specially formulated and blended for Honda engines. Meets or exceeds American Petroleum Institute SJ

standards.

100 cc / 3.4 oz

Genuine Honda Oil

10W-30

1 2

CONTENTS

QUICK FIND

Air Filter..................................................17

Contact Honda.......................................30

Cutting-line Heads.................................22

Find a Dealer.........................................30

Fuel..........................................................9

Fuel System Maintenance......................29

Maintenance Schedule...........................16

Oil Change.............................................16

Oil Level Check.........................................9

Spark Plug..............................................18

Warranty Coverage.................................31

FOR YOUR SAFETY..............................2

PARTS AND CONTROLS......................3

INITIAL TRIMMER SETUP.....................4

Install the Handlebar (U-Type)............5

BEFORE EACH OPERATION

Check Your Trimmer...........................7

Check Your Trimming Area.................7

Equipment...........................................8

Check the Engine Oil Level.................9

Add Fuel..............................................9

OPERATION

Safe Trimming Practices...................10

Attachments and Modifications.........12

Operating the Controls......................12

Starting the Engine............................13

Stopping the Engine..........................14

SERVICING YOUR TRIMMER

Maintenance Safety...........................15

Maintenance Schedule......................16

Oil Change........................................16

Air Filter.............................................17

Spark Plug.........................................18

Spark Arrester (optional part)............18

CUTTING ATTACHMENTS..................20

TRANSPORTING.................................24

Loading..............................................24

STORAGE

Fuel...................................................25

Oil......................................................25

Cleaning............................................25

Storage Location...............................25

Removing From Storage...................25

TROUBLESHOOTING

Engine Will Not Start.........................26

Loss of Power or Engine Speed Won’t

Increase.............................................26

Cutting Line Head Won’t Stop Turning.26 Cutting Line or Blade Head Won’t Turn26

TECHNICAL INFORMATION

Serial Number Locations......................

High Altitude Oper

ation........................27

Emission Control System.....................27

Air Index...............................................27

Specifications.......................................28

FUEL SYSTEM MAINTENANCE.............29

CUSTOMER INFORMATION Parts, Accessories, and Service Items.30

Dealer Locator Information...................30

How to Contact Honda.........................30

Honda Publications..............................30

DISTRIBUTOR’S LIMITED WARRANTY.31

EMISSION SYSTEM WARRANTY..........32

PRODUCT REGISTRATION...................35

For more information about your trimmer, visit

www.powerequipment.honda.com

and click on FAQs or scan the QR code shown here.

QUESTIONS?

Contact your Honda dealer.

There is a dealer locator at

www.powerequipment.honda.com

U-TYPE ONLY

LOOP HANDLE ONLY

ALL TYPES

5 x 28 mm BOLT/WASHER (4)

HANDLEBAR HOLDER A

THROTTLE TRIGGER

U-SHAPED HANDLEBAR

HANDLEBAR HOLDER B

90°

Importance of Proper Assembly

Proper assembly is essential to operator safety and the reliability of the machine. Any error or oversight made by the person assembling and servicing a machine can result in faulty operation, damage to the machine, or injury to the operator.

 WARNING

Improper assembly can cause an unsafe condition that can lead to serious injury or death.

Follow the procedures and precautions in the assembly instructions carefully.

Tools Required

4 mm hex wrench 8 and 17 mm sockets 0 - 25 ft-lb torque wrench

Ref. No

Description

Loop

handle

U-type

handlebar

Qty.

2 Goggles ••1 3 Bottle of oil ••1

Single-strap shoulder

harness

• 1

5 Full shoulder harness • 1 6 Brush/wood debris shield • 1 7 Cutting-line debris shield • 1 8 Cover • 1 9 10 mm lock nut • 1 10 Spacer • 2 11 5 x 28 mm bolt • 4 12 Spacer se t (A & B) • 1

Brush/wood saw blade

(50-tooth/10 in)

• 1

14 Blade cover • 1

15 Kwik Loader

head • 1 16 Collar • 1 17 Washer • 1

Trimmer line (0.095 x 8 inch long)

• 2

List of Loose Parts

Carefully remove the trimmer and loose parts from the carton and compare the loose parts against the following list. Contact the authorized Honda dealer from whom you purchased the trimmer if any of the loose parts shown are not included with your trimmer.

DRAFT COPY - DO NOT DISTRIBUTE

OWNER’S MANUAL

HHT25S • HHT35S

TRIMMER/

BRUSH CUTTER

Before operating the trimmer for the first time, please read this Owner’s Manual. Even if you have operated other trimmers, take time to become familiar with how this trimmer works and practice in a safe area until you build up your skills.

Install the Handlebar (U-Type)

1. Remove the four 5 x 28 mm bolt/washers and handlebar holder A.

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.

Ref. No

1 Owner’s Manual ••1

Description

Loop

handle

handlebar

U-type

Qty .

4. Tighten the four 5 x 28 mm bolt/washers.

7/8 in (100 mm)

7/16 in (60 mm)

CUTTING-LINE DEBRIS SHIELD (with cutoff knife)

5 x 28 mm BOLT/WASHER (4)

SPACER (2) [3/32 in (2.3 mm) thick]

CUTTING-LINE HEAD

SPACER B

COVER PLATE/ SPACER A

OUTPUT SHAFT (left-hand thread)

4 mm HEX WRENCH

GEAR CASE HOLE

WASHER (used with Kwik Loader head only)

COLLAR (left-hand thread)

TIGHTEN

BRUSH/WOOD BLADE DEBRIS SHIELD

5 x 28 mm

BOLT/WASHER (4)

SPACER (2)

[3/32 in (2.3 mm) thick]

TORQUE: 3.6 ft-lb (5 N·m)

5. Make sure the tie straps are positioned as shown.

6. Operate the throttle trigger and make sure the throttle operates smoothly.

Kwik Loader™ Shield and Head Installation

Prior to installation, move the ignition switch to the STOP (O) position.

1. Install the cutting-line head debris shield as shown below.

2. Tighten the 5 x 28 mm bolt/washers:

TORQUE: 2.5 ft-lb (3.4 N·m)

All output shafts use left-hand threads.

Brush/Wood (50-tooth) Shield and Head Installation

Prior to installation, move the ignition switch to the STOP (O) position and disconnect the spark plug cap from the spark plug. Wear protective gloves when working around the cutting-line head and saw blade.

1. Install the brush/wood blade debris shield as shown below.

2. Tighten the 5 x 28 mm bolt/washers:

TORQUE: 2.5 ft-lb (3.4 N·m)

3. Position cover plate/spacer A, spacer B, and washer on the shaft as shown.

4. Insert the tip of a 4 mm hex wrench or equivalent fully into the gear case hole and verify that the output shaft will not turn.

5. Position the Kwik-Loader trimmer head against the washer and thread the collar onto the shaft making sure to seat the triangular portion of the collar in the triangular opening in the trimmer head.

6. Grasp the trimmer head and tighten it by hand in the direction shown.

7. Remove the 4 mm hex wrench from the gear case hole.

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.

NOTICE

4 mm HEX TOOL

SPACER B

COVER PLATE/ SPACER A

10 mm LOCK NUT (left-hand thread)

COVER

OUTPUT SHAFT (left-hand thread)

TIGHTEN

BLADE COVER

BLADE

Install with the white markings facing the debris shield.

DEBRIS SHIELD

BLADE

POST END

BLADE COVER

STANDARD ON UKAT TYPES

OIL FILLER CAP/DIPSTICK

OIL FILLER OPENING

5. With the blade cover installed on the blade, install the blade by aligning the center of the blade with the shoulder on cover plate/ spacer A.

6. Install spacer B, the cover, and the 10 mm lock nut as shown. Be sure to install the blade with the cutting edges of the saw teeth

in the direction of rotation; the side with the white markings must face the debris shield.

The output shaft has left-hand threads. Tighten the 10 mm lock nut counterclockwise.

TORQUE: 14 ft-lb (20 N•m)

7. Remove the 4 mm hex wrench or equivalent from the gear case.

Blade Cover Removal

1. Turn the blade cover slowly until the cover latch is clear of the debris shield.

Unfasten the latch by lifting the tab off the post.

2. Pull the post end away from the blade and set it on top of the blade as shown.

3. Turn the blade cover slowly until the post end is clear of the debris shield, then remove the blade cover from the blade.

Blade Cover Installation

1. Install the blade cover over the blade so that 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.

Add Engine Oil

The trimmer is shipped WITHOUT OIL in the engine. Place the trimmer on a level

surface, and then remove the oil filler cap/dipstick.

A bottle of oil is included in the box with your trimmer. Add the entire contents of the oil bottle into the oil filler opening.

All Honda engines are run at the factory prior to packaging. Most of the oil is removed prior to shipment; however, some oil remains in the engine. The amount of oil left in the engine varies.

If not using the supplied oil, add enough recommended oil (page 16) to bring the oil level to the bottom edge of the oil filler hole.

Do not overfill the engine with oil, as the oil tank capacity is small.

Running the engine with too little or too much oil can cause engine damage. This type of damage is not covered by the DISTRIBUTOR’S

LIMITED WARRANTY (page 30). Screw in the oil filler cap/dipstick securely.

Please Register Your Trimmer

Please take a few minutes and register your purchase with Honda. You can register by completing and mailing the registration card on

the back cover of this book or going online to

http://powerequipment.honda.com and clicking on Product

Registration.

Before Using Your Trimmer

SINGLE-STRAP SHOULDER HARNESS

(Loop type handle)

FULL SHOULDER HARNESS

(U-type handlebar)

QUICK-RELEASE LATCH

LATCH TAB

Before using the trimmer, all operators must read the following sections:

• FOR YOUR SAFETY (page 2)

• PARTS AND CONTROLS (page 3)

• BEFORE EACH OPERATION (page 7)

• OPERATION (page 9)

• MAINTENANC E SCHEDULE (page 15)

Even outside a 50-foot (15-meter) radius of the trimmer, there may be a risk of injury from thrown objects, so bystanders should be encouraged to wear eye protection.

If anyone approaches you while you are operating the trimmer, release the throttle trigger and stop the engine.

Equipment

The Honda HHT25S and HHT35S trimmer/brush cutters are supplied with a shoulder harness and safety glasses. Refer to page 7 for a description of other equipment and protective clothing you will need.

BEFORE EACH OPERATION

Your safety is your responsibility. A little time spent in preparation will significantly reduce your risk of injury. Read and understand this manual. Know what the controls do and how to operate them.

Familiarize yourself with the trimmer and its operation before you begin using it. Know how to quickly shut off the engine in case of an emergency.

Check Your Trimmer

For your safety, to ensure compliance with environmental regulations, and to maximize the service life of your trimmer, it is very important to take a few moments before you operate the trimmer to check its condition. Be sure to take care of any problem you find, or have your servicing dealer correct it, before you operate the trimmer.

On blade equipped models, always remove the blade cover before starting the engine. If the cover is not removed, the blade cover may fly off at high speed during test operation. Reinstall the blade cover when the trimmer is not being used.

 WARNING

Improperly maintaining this trimmer, or failing to correct a problem before operation, could cause a malfunction in which you could be seriously injured.

Always perform a pre-operation inspection before each operation, and correct any problem.

• Loo k around the engine for signs of oil or gasoline leaks

• Look for signs of damage

• Check the th rottle cable free play (page 18)

• Check that all nuts, bolts, and screws are tightened

• Check the air filter (page 16) and oil level (page 8)

• Check the fu el level (page 9). Starting with a full tank will help to eliminate or reduce operating interruptions for refueling.

• If using a metal blade on a loop handle trimmer, be sure the barrier bar (optional part) is installed beneath the loop handle

• Check that the debris shield is the correct shield for the cutting attachment (page 21)

Check Your Trimming Area

Objects thrown by the trimmer can cause serious injury. Before operating the trimmer, carefully inspect the area and remove all objects that could be thrown by, or entangled in, the cutting attachment, such as rocks, broken glass, nails, wire, or string.

Clear the area of children, bystanders, and pets. Keep all children, bystanders, and pets at least 50 feet (15 meters) away from where the trimmer is being operated.

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

page 8.

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.

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.

Check Your Shoulder Harness and

NOTICE

FULL SHOULDER

HARNESS

QUICK-RELEASE

LATCH

SINGLE-STRAP

SHOULDER HARNESS

GROUND

A few inches above the ground

OIL FILLER CAP/DIPSTICK

OIL FILLER OPENING

OIL LEVEL

Check the Engine Oil Level

Trimmer Adjustment

Adjusting the Harness

Adjust the harness so the quick-release latch is at your right hip, as shown.

Balancing the Trimmer on the Shoulder Harness

Hang the trimmer on the harness hook, and see how it balances. Adjust the shoulder harness, the harness hanger on the frame pipe,

and the loop handle or U-type handlebar, so the handle or handlebars are in a comfortable operating position, and the trimmer hangs with its cutting attachment a few inches above the ground (see page 14).

Check the engine oil level before each use, or every 10 hours if operated continuously. Rest the trimmer on a level surface with the engine stopped.

1. Rest the trimmer on a level surface as shown.

2. Remove the oil filler cap/dipstick and wipe it clean.

3. Insert and remove the dipstick without screwing it into the filler opening. Check the oil level shown on the dipstick.

4. If the oil level is low, fill to the edge of the oil filler hole with the recommended oil. Avoid overfilling or underfilling, as the oil capacity is small. Be sure the engine is in a level position, as shown.

Running the engine with a low oil level can cause engine

damage. This type of damage is not covered by the

DISTRIBUTOR’S LIMITED WARRANTY (page 30).

5. Screw in the oil filler cap/dipstick securely.

Add Fuel

NOTICE

FUEL TANK CAP

MAXIMUM FUEL LEVEL

FUEL TANK

This engine is certified to operate on regular gasoline with a pump octane rating of 86 or higher.

Never use stale or contaminated gasoline or an oil/gasoline mixture. Avoid getting dirt or water in the fuel tank.

Y ou may use regular unleaded gasoline containing no more than 10% ethanol (E10) or 5% methanol by volume. In addition, methanol must contain cosolvents and corrosion inhibitors.

Use of fuels with content of ethanol or methanol greater than shown above may cause starting and/or performance problems. It may also damage metal, rubber, and plastic parts of the fuel system.

Engine damage or performance problems that result form using a fuel with percentages of ethanol or methanol greater than shown above are not covered under warranty.

 WARNING

Gasoline is highly flammable and explosive, and you can be burned or seriously injured when refueling.

• Stop the engine and keep heat, sparks, and flame away.

• Refuel only outdoors.

• Wi pe up spills immediately.

OPERATION

For your safety, avoid starting or operating the engine in an enclosed area, such as a garage. Your trimmers exhaust contains poisonous carbon monoxide gas, which can collect rapidly in an enclosed area and cause illness or death.

 WARNING

Exhaust contains poisonous carbon monoxide gas that can build up to dangerous levels in closed areas. Breathing carbon monoxide can cause unconsciousness or death.

Never run the trimmer in a closed, or even partially closed area where people may be present.

If the trimmer starts to shake or vibrate, stop the engine immediately. After the cutting head has completely stopped, inspect it to determine the cause of the vibration. Sudden vibration is a sign of a hazardous problem, such as a loose or damaged blade. Do not operate the trimmer until the problem is corrected.

Prolonged exposure to vibration may cause Hand-Arm Vibration Syndrome (HAVS). Symptoms include loss of skin color in the hands and numbness or a painful tingling sensation in the fingers, hands, and arms. Regular users of any power equipment may feel the numbness or pain spontaneously, at any time, not just after using the equipment. If any of these symptoms occur, see a physician immediately.

If your equipment will be used on an infrequent or intermittent basis, (more than 4 weeks before next use), refer to “FUEL SYSTEM MAINTENANCE” on page 28 for information regarding fuel deterioration.

1. To refuel, set the trimmer on level ground and remove the fuel tank cap.

2. Fill the tank with gasoline to the shoulde r of the filler neck.

3. Refuel carefully to avoid spilling fuel. Do not overfill.

4. After refueling, tighten the fuel tank cap securely. Never refuel the engine inside a building where gasoline fumes

may reach flames or sparks. Keep gasoline away from appliance pilot lights, barbecues, electric appliances, power tools, etc.

Spilled fuel is not only a fire hazard, it causes environmental damage. Wipe up spills immediately

Move the trimmer at least 10 feet (3 meters) away from the fueling source and site before starting the engine.

Fuel can damage paint and plastic. Be careful not to spill fuel when filling your fuel tank. Damage caused by spilled fuel is not covered by the DISTRIBUTOR’S LIMITED WARRANTY (page 30).

Safe Trimming Practices

Honda trimmers are designed to give safe and dependable service if operated according to instructions and intended use.

Honda trimmers are intended to be used by an experienced, trained operator who is familiar with the use of power equipment. Do not allow a child or an inexperienced, untrained operator to use this trimmer. Operating this equipment requires special effort on your part to ensure your safety and the safety of others. Read and understand this owner’s manual.

Always Wear Eye Protection and Protective Clothing

• The most frequent injuries associated with string trimmers are eye injuries caused by thrown debris. Always wear safety glasses or goggles that meet the ANSI Z87.1 rating whenever you use the trimmer.

• The operator must wear hearing protectors when using this trimmer. Hearing protectors will protect the operator's ears from noise damage.

• Wearing protective clothing also reduces the risk and severity of injury from thrown debris or contact with the cutting attachment. Wear the trimmer harness, gloves, a long-sleeved shirt, long pants, and sturdy boots with nonslip soles.

Keep Away From Cutting Lines and Blades

• A spinning cutting blade can cut through your clothes and skin just as easily as it cuts through grass and dirt. Keep all parts of your body away from a spinning cutting attachment.

• Even after the engine has stopped, the cutting attachment will spin for several seconds. Do not touch it until it has stopped spinning, or you may get cut.

Turn the Engine Off When Not Trimming

DEBRIS

Cut with the right side to throw debris away from you.

BLADE THRUST

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.

Cutting Terrain

Be very careful when operating the trimmer over uneven or rough ground, and when the ground is wet and slippery. Watch out for hidden obstacles that could cause you to stumble. Operate the trimmer only under conditions with good visibility. Do not operate the trimmer where you cannot see what it is cutting.

 WARNING

Rotating cutting lines can cause serious abrasions and cuts, and blades can cut deeply.

• Keep away from the cutting lines or blade whenever the engine is running.

• Always stop the engine, and be sure the cutting line head or blade has stopped turning, before inspecting or handling the cutting lines or blade.

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.

If the cutting line head or blade is held parallel to the ground, debris will scatter in all directions and there will be greater friction, which will wear out the cutting line or blade sooner.

When operating the trimmer near a hard surface such as a wall, work from an angle where debris that strikes the hard surface will ricochet away from you.

Gravel, loose stones, etc. can be picked up by the nylon cutting lines or blade and thrown many feet with enough force to cause serious personal injury and/or property damage. Before crossing graveled areas, release the throttle trigger to stop the cutting line head or blade.

Blade Thrust (Kickback)

Blade thrust (kickback) is the sudden, forceful, and uncontrolled movement of a blade-equipped trimmer that may occur if the blade binds while cutting or strikes a solid object.

Blade thrust (kickback) throws the trimmer in the direction opposite blade rotation at the point of contact, and the jolt received by the operator can result in further loss of control.

To reduce the risk of loosing control, use metal 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.

OPERAT ING TIPS

TRIMMING

DEBRIS

SAWING

Scything Motion

Swing the trimmer in a level arc by rotating your body with a smooth, easy motion, rather then moving the trimmer with your arms. Do not chop at tough weeds and brush; let the cutting line or blade work through tough growths gradually.

To direct thrown debris away from you, tilt the cutting attachment to the right side, scythe from left to right, then return without cutting.

Trimming and Edging

Use nylon line for cutting against a hard surface. Work from an angle where debris that strikes the hard surface will ricochet away from you.

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.

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.

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.

Attachments and 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, de bris shields, barrier kits, and shoulder harnesses that have been designed and approved for your trimmer and are covered by warranty. See CUTTING ATTACHMENTS (page 19).

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.

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