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Honda HHT25S - User Manual

Honda HHT25S
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CONTENTS
QUICK FIND
Air Filter................................................. 16
Contact Honda....................................... 29
Cutting-Line Heads............................... 22
Find a Dealer ......................................... 29
Fuel ..........................................................9
Fuel System Maintenance......................28
Maintenance Schedule.......................... 15
Oil Change ............................................ 16
Oil Level Check.........................................8
Spark Plug ............................................. 17
Warranty Coverage.................................30
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
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
Loss of Power or Engine Speed Won’t
Increase................................................ 25
Cutting-Line Head Won’t Stop Turning.
25
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
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.
© 2013 American Honda Motor Co., Inc. All Rights Reserved
QUESTIONS?
Contact your Honda dealer.
There is a dealer locator at
http://powerequipment.honda.com
00X31VL3 D220
Click to Save As

Table of Contents

Questions and Answers

  • S
    stevencrossAug 14, 2025
    Why won't my Honda HHT25S Trimmer engine start?
    • J
      James CooperAug 14, 2025
      Several factors can prevent your Honda Trimmer's engine from starting. It could be due to the ignition switch being in the STOP position—ensure it's turned ON. If the engine is cold, the choke may not be in the CLOSED position; adjust it accordingly. Also, check if you're out of fuel and add some, pressing the priming bulb. Bad fuel from storage can also be a culprit; drain the tank and carburetor, then refuel with fresh gasoline. A faulty spark plug could also be the problem; gap or replace it. Finally, issues like a clogged fuel filter or carburetor malfunction could be the cause, requiring a visit to an authorized Honda dealer.
  • C
    Chad GarciaAug 17, 2025
    Why won't my Honda Trimmer start?
    • E
      Elizabeth RichardsonAug 17, 2025
      Your Honda Trimmer might not start due to several reasons: the ignition switch may be in the STOP position (turn it ON), the choke may not be in the CLOSED position for a cold engine (move it to CLOSED), the trimmer may be out of fuel (add fuel and press the priming bulb), the fuel may be bad due to improper storage (drain the tank and carburetor, then refuel with fresh gasoline), or the spark plug may be faulty (gap or replace the spark plug). If these steps don't resolve the issue, it could be due to a clogged fuel filter, carburetor malfunction, ignition malfunction, or stuck valves, requiring service by an authorized Honda dealer.
  • C
    cgregoryAug 21, 2025
    What to do if my Honda Trimmer has excessive vibration?
    • K
      Kevin WhiteAug 21, 2025
      Excessive vibration in your Honda Trimmer can stem from a few issues. First, check if the cutting-line head or blade nut is loose and tighten it securely. Unequal cutting-line lengths can also cause vibration; rewind the cutting-line and cut the lines to equal lengths. Lastly, a damaged blade can be the source; replace it to resolve the issue.
  • R
    Rachel HardinAug 25, 2025
    Why won’t the cutting line head stop turning on my Honda HHT25S Trimmer?
    • J
      Jeffrey DudleyAug 25, 2025
      If the cutting line head on your Honda Trimmer won’t stop turning, it could be due to a fault in the throttle control or cable, or the throttle cable may be out of adjustment or bent, which requires attention from an authorized Honda dealer. It may also happen if the idle speed is too fast, or due to broken or worn clutch springs, or a faulty clutch system.
  • J
    Jillian RogersAug 27, 2025
    What to do if the cutting line or blade head won’t turn on my Honda HHT25S?
    • M
      Michael WilliamsAug 27, 2025
      If the cutting line or blade head on your Honda Trimmer won’t turn, it could be due to a worn or broken clutch, a broken drive cable, or worn or broken gear case parts, requiring a visit to an authorized Honda dealer for repair.
  • J
    John RamirezAug 30, 2025
    What to do if Honda HHT25S Trimmer has excessive vibration?
    • S
      Scott HarrisAug 30, 2025
      Excessive vibration in your Honda Trimmer can be caused by a loose cutting-line head or blade nut (tighten it securely), unequal cutting-line lengths (rewind the cutting-line and cut to equal lengths), or a damaged blade (replace the blade).
  • J
    Jose LewisSep 2, 2025
    What to do if Honda HHT25S cutting-line or blade head won’t turn?
    • K
      karagilbertSep 3, 2025
      If the cutting-line or blade head on your Honda Trimmer won’t turn, it could be due to a worn or broken clutch, a broken drive cable, or worn or broken gear case parts. In this case, take the trimmer to an authorized Honda dealer for repair.
  • A
    Aaron ClarkSep 6, 2025
    What to do if Honda HHT25S Trimmer blade is damaged?
    • H
      Henry JacksonSep 6, 2025
      If the blade on your Honda Trimmer is damaged, replace it.
  • M
    Michael LiSep 9, 2025
    How to fix a loose cutting-line head or blade nut on Honda Trimmer?
    • J
      Joseph BarkerSep 9, 2025
      To fix a loose cutting-line head or blade nut on your Honda Trimmer, tighten the cutting-line head or blade nut securely.

Summary

For Your Safety

Safety Instructions and Signal Words

Explains how safety information is presented with signal words like DANGER, WARNING, CAUTION.

Employer Safety Responsibilities

Outlines employer responsibilities for trimmer safety and training.

Parts and Controls Overview

Loop Handle Components

Identifies components of the loop handle type trimmer.

U-Type Handle Components

Identifies components of the U-type handle trimmer.

Engine Components

Identifies major engine components of the trimmer.

Initial Trimmer Setup

Assembly Importance and Tools

Stresses assembly importance and lists necessary tools.

Loose Parts Checklist

Provides a list of parts included in the trimmer packaging.

Handlebar Installation (U-Type)

Details the steps for installing the U-type handlebar.

Trimmer Assembly and Installation

Shield and Head Installation

Instructions for installing shields and cutting heads for Kwik Loader and Brush/Wood.

Trimmer Assembly and Installation (Continued)

Blade Cover Procedures

Steps to remove and install the blade cover.

Adding Engine Oil

Instructions for adding engine oil before first use.

Before Each Operation

Trimmer Pre-Operation Checks

Perform essential pre-operation checks for safety and performance.

Trimming Area and Safety Equipment

Inspect area for hazards and details required safety equipment.

Adjustments and Checks

Harness and Trimmer Adjustment

How to adjust the harness and balance the trimmer.

Engine Oil Level Check

Procedure to check and fill engine oil before use.

Operation Basics

Adding Fuel Safely

Instructions for refueling the trimmer safely and correctly.

Safe Trimming Practices

Guidelines for safe operation and avoiding injury.

Protective Clothing and Gear

Recommends wearing eye protection, hearing protection, and protective clothing.

Operating Techniques and Safety

Safe Operation and Terrain Handling

Instructions on shutdown, area clearance, terrain, and blade safety.

Operating Techniques

Cutting and Clearing Methods

Techniques for trimming, edging, brush clearing, and sawing.

Slope Operation Safety

Safety and technique for operating on inclines.

Operating the Controls

Choke, Ignition, and Operator Presence Lever

How to use starting and safety controls.

Throttle Control and Priming Bulb

How to control engine speed and prime the engine.

Starting and Stopping the Engine

Engine Starting Procedure

Step-by-step guide to start the engine.

Engine Stopping Procedure

Procedure to safely shut down the engine.

Trimmer Operation

Harness Quick Disconnect

How to detach and reattach the trimmer from the harness.

Cutting-Line Head Usage

Instructions for Kwik Loader and Semi-Matic cutting-line heads.

Blade Usage and Safety

Information on blade types, installation, and safety precautions.

Servicing Your Trimmer

Maintenance Safety Precautions

Key safety rules for performing maintenance.

Maintenance Schedule Overview

Table outlining maintenance intervals and tasks.

Routine Maintenance

Oil Change and Air Filter Maintenance

Steps for oil change and air filter care.

Routine Maintenance (Continued)

Spark Plug Service

Procedure for inspecting, gapping, and replacing the spark plug.

Routine Maintenance (Continued)

Spark Arrester and Cable Checks

Service for spark arrester and inspection of throttle cable.

Fuel System Maintenance

Fuel Filter and Tank Cleaning

Procedure for cleaning the fuel filter and tank.

Cutting Attachments Overview

Illustrates different types of cutting attachments.

Blades and Attachments

Blade Types, Cover, and Inspection

Description of blade types, using the cover, and inspection.

Blade Removal and Installation

Steps for safely removing and installing blades.

Debris Shields

Debris Shield Usage and Changing

Importance of using correct debris shields and how to change them.

Cutting-Line Heads

Cutting-Line Head Inspection and Line Installation

How to inspect the cutting-line head and install nylon line.

Cutting-Line Head Replacement

Line Loading and Head Removal;Installation

Procedures for loading line and replacing the cutting head.

Transporting and Storage

Loading and Transport Preparation

How to prepare and secure the trimmer for transport.

Storage Preparation and Fuel Draining

Steps for storage, including fuel system preparation.

Troubleshooting

Engine Starting and Power Issues

Troubleshooting for engine start and power loss.

Cutting Head and Vibration Issues

Problems with cutting head operation and excessive vibration.

Technical Information

High Altitude and Emission Control Systems

Information on altitude effects and emission control systems.

Specifications

Model, Engine, and Dimension Specs

Key specifications for different models.

Maintenance and Tune-up Specifications

Specifications for maintenance tasks.

Fuel System Maintenance

Fuel Care During Season and Storage

Recommendations for fuel handling and storage.

Customer Information

Parts, Dealers, and Publications

Information on parts, finding dealers, and resources.

Distributors Limited Warranty

Warranty Coverage, Exclusions, and Disclaimers

Details on warranty terms and limitations.

Emission System Warranty

Warranty Rights, Obligations, and Covered Parts

Owner's responsibilities and emission warranty components.

Product Registration

Registering Your Honda Trimmer

Instructions for registering the product for service information.

Honda HHT25S Specifications

General IconGeneral
Engine Displacement25 cc
Fuel TypeUnleaded gasoline
Shaft TypeStraight
EngineGX25
Handle TypeLoop
Engine Type4-stroke
Fuel Tank Capacity0.58 L
Cutting Width17 inches
Power OutputApproximately 1.1 HP

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