Provides service, repair and maintenance information for 1987-1988, 1991-1992 Honda TRX250X and 1993-2000 Honda TRX300EX Fourtrax  and 2001-2006 TRX300EX Sportraxmodels.

TRX250X (1987-1988, 1991-1992)

TRX300EX Fourtrax (1993-2000)

TRX300EX Sportrax (2001-2006)

The chapter breakdown of the M456-4 is as follows:

QUICK REFERENCE DATA

CHAPTER ONE / GENERAL INFORMATION
Manual organization  / Notes, cautions and warnings  / Safety first  / Service hints  / Washing the vehicle  / Serial numbers  / Torque specifications  / Fasteners  / Lubricants  / Sealants, adhesives and cleaners  / Expendable supplies  / Basic hand tools  / Precision measuring tools  / Test equipment  / Special tools  / Mechanic’s tips  / Ball bearing replacement  / Oil seals  / Riding safety

CHAPTER TWO / TROUBLESHOOTING
Operating requirements  / Starting the engine  / Starting difficulties  / Engine is difficult to start  / Poor idle speed performance  / Poor medium- and high-speed performance  / Engine starting system (TRX300EX)   / Lighting coil (TRX250X)   / Charging system (1993-on TRX300EX)   / Ignition system  / Carburetor troubleshooting  / Engine overheating  / Engine  / Engine noises  / Engine leak down test  / Clutch  / Transmission  / Drive train noise  / Handling  / Frame noise

CHAPTER THREE / LUBRICATION, MAINTENANCE AND TUNE-UP
Pre-ride checklist  / Service intervals  / Tires and wheels  / Battery (TRX300EX)   / Lubricants  / Periodic lubrication  / Periodic maintenance  / Non-scheduled maintenance  / Engine tune-up  / Storage

CHAPTER FOUR / ENGINE TOP END
Engine principles  / Cleanliness  / Cylinder head cover  / Camshaft and cam chain tensioner  / Cylinder head  / Valves and valve components  / Cylinder  / Piston and piston rings  / Oil pipes

CHAPTER FIVE / ENGINE LOWER END
Servicing engine in frame  / Engine  / Drive sprocket  / Left crankcase cover and stator coil (TRX250X)   / Starter reduction gears (TRX300EX)   / Left crankcase cover and stator coil (TRX300EX)   / Flywheel (TRX250X)   / Flywheel and starter clutch (TRX300EX)   / Gearshift linkage  / Oil pip and oil pump  / Primary gears and oil pump drive gear  / Cam chain and guides  / Breather plate  / Crankcase and crankshaft  / Kickstarter (TRX250X)   / Engine break-in

CHAPTER SIX / CLUTCH AND REVERSE SHIFTER
Clutch cover  / Clutch  / Reverse shifter  / Clutch cable  / Reverse cable replacement

CHAPTER SEVEN / TRANSMISSION AND INTERNAL SHIFT MECHANISM
Transmission/reverse system identification  / Transmission troubleshooting  / Transmission/reverse overhaul  / Reverse idle gear assembly  / Transmission inspection  / Internal shift mechanism
 
CHAPTER EIGHT / FUEL AND EXHAUST SYSTEM
Carburetor  / Carburetor adjustments  / Throttle housing and cable  / Fuel tank  / Fuel valve  / Air box  / Exhaust system

CHAPTER NINE / ELECTRICAL SYSTEM
Lighting system (TRX250X)   / Charging system (1993-on TRX300EX)   / Alternator (TRX300EX)   / Alternator and AC lighting system (TRX250X)   /  Ignition system (TRX250X)   / Ignition system (TRX300EX)   /  Ignition coil  / Electric starting system (TRX300EX)   / Starter relay switch (TRX300EX)   /  Reverse inhibiter unit (TRX300EX)   / Lighting system  / Switches  / Fuse (TRX300EX)   / Wiring diagrams

CHAPTER TEN / FRONT SUSPENSION AND STEERING
Front wheel  / Front hub  / Shock absorbers  / Tie rods  / Steering knuckle  / Control arms  / Handlebar  / Steering shaft  / Tires and wheels

CHAPTER ELEVEN / REAR SUSPENSION
Rear wheels  / Rear hub  / Rear axle  / Rear axle bearing holder  / Drive chain  / Driven sprocket  / Tire changing and tire repairs  / Shock absorber  / Rear swing arm

CHAPTER TWELVE / BRAKES
Brake fluid selection  / Disc brake  / Front caliper  / Front master cylinder  / Rear caliper  / Rear master cylinder  / Brake hose replacement  / Brake disc  / Brake bleeding  / Rear brake pedal

CHAPTER THIRTEEN / BODY
Seat/rear fender assembly  / Front fender  / Handlebar cover

INDEX

WIRING DIAGRAMS