2007-2009 Honda TRX300EX TRX300X service manual, Page 351Get this manual
TROU BLESHOOTING
ENGINE LACKS POWER
1Drive Train Inspection Raise wheels off the ground and spin by hand Does the wheel spin freely?
- Brake dragging Worn or damaged wheel hub or axle bearing Drive chain too tightGO TO STEP 2
2Tire Pressure Inspection
Check tire pressureAre the tire pressures low?
- Faulty tire valve Punctured tireGO TO STEP 3
3Clutch Inspection Accelerate rapidly from low to secondDoes the engine speed change accordingly when clutch is engaged?
Clutch slipping Worn clutch discs Warped clutch plates Weak clutch springs Damaged clutch lifter arm Additive in engine oil
- GO TO STEP 5
4Engine Condition Inspection Accelerate lightlyDoes the engine speed increase?