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Honda GX25 Shop Manual

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Manual (93 pages)

Owner's manual (80 pages)

Applications manual (84 pages)

Table Of Contents

Table of Contents

Contents
Specifications
Dimensional Drawnings
Wiring Diagram
Service Information
Serial Number Location
Maintenance Standards
Torque Values
Special Tools
Troubleshooting
General Symptom and Possible Causes
Engine Troubleshooting
Hard Starting
Cylinder Compression Check
Poor Performance at Low Speed
Poor Performance at High Speed
Ignition System
Spark Test
Probable Causes of Major Carburetor Problems
Maintenance Schedule
Engine Oil
Air Cleaner
Spark Plug
Valve Clearance
Carburetor
Fuel Tank/Fuel Filter
Spark Arrester
Air Cleaner Removal/Installation
Carburetor Removal/Installation
Carburetor Disassembly/Reassembly
Carburetor Adjustment
Metering Lever
Recoil Starter/Fuel Tank
Recoil Tank Reassembly
Fuel Tank Removal/Installation
Top Cover/Muffler Removal/Installation
Starter Pulley/Ignition Coil/Clutch Shoe/Flywheel
Recoil Starter Pulley
Ignition Coil/Clutch Shoe/Flywheel Disassembly and Reassembly
Clutch Assembly
Ignition Coil Inspection
Ignition Coil Air Gap Adjustment
Cam Pulley/Cylinder Head Cover Disassembly/Reassembly
Cam Pulley Removal
Cylinder Head Inner Cover
Lower Crankcase Disassembly/Reassembly
Lower Crankcase Removal/Installation
Oil Outlet Valve Disassembly
Shroud Reassembly
Crankshaft/Piston/Cylinder Block/Valves
Piston Pin Disassembly/Reassembly
Crankshaft Inspection/Reassembly
Cylinder Block/Valves Disassembly/Assembly
Cylinder Sleeve I.D.
Piston Ring End Gap
Cam Height
Cam Pulley Shaft O.D./I.D
Valve Spring Free Length
Valve Face/Stem O.D.
Valve Guide I.D.
Valve Stem-To-Guide Clearance
Index
Outline of Changes
Dimensions and Weights
Dimensional Drawings WA Type
Dimensional Drawings TA2 Type
Throttle Lever (WA Type Only)
Air Cleaner (TA 2 Type Only) Removal/Installation
Control Assembly (WA Type Only) Removal/Installation
Engine Stop Switch
Throttle Rod Installation
Carburetor (WA Type Only) Removal/Installation
Fuel Tank (TA2 Type Only) Removal and Installation
Top Cover/Muffler (TA2 Type Only) Removal/Installation
Fan Cover/Engine PTO Shaft/Flywheel (WA Type Only)
Engine PTO Shaft
6001 Radial Ball Bearing

Quick Links

1 Troubleshooting
2 Carburetor
3 Carburetor Adjustment
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Troubleshooting

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Questions and answers

Gary Montague

June 6, 2025

Replaced fuel lines and cleaned fuel filter, can’t get fuel when I push primer bulb several times. Air in line somewhere. How do I get it out or what’s going on ?