2006-2009 Honda TRX250EX/TRX250X Service Manual, Page 364Get this manual
TROUBLESHOOTING
ENGINE LACKS POWER
1Drive Train Inspection
Raise the rear wheels off the ground and spin by handDoes the wheels spin freefy?
- Brake dragging Worn or damaged axle or final drive bearing
- GO TO STEP 2
2Tire Pressure Inspection
Check the tire pressure
Are the tire pressures correct?
- Faulty tire valve Punctured tire
- GO TO STEP 3
3Clutch Inspection
Accelerate rapidly low to secondDoes the engine speed change accordingly when the clutch is engaged? NO Clutch slipping Worn clutch discsplates Warped clutch discspla tes Weak clutch spring Add itive in engine oil
- GO TO STEP 4
4Engine Performance Inspection Accelerate lightlyDoes the engine speed increase?