2006-2014 Honda FourTrax ATV TRX250 EX TRX250X Service Manual, Page 355Get this manual
TROUBLESHOOTING
ENGINE LACKS POWER
1Drive Train Inspection
Raise the rear wheels off the ground and spin by handDoes the wheels spin freely? NOBrake dragging Worn or damaged axle or final drive bearing
- GO TO STEP 2
2Tire Pressure Inspection
Check the tire pressureAre the tire pressures correct? NOFaulty 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? NOClutch slipping Worn clutch discsplates Warped clutch discsplates Weak clutch spring Additive in engine oil
- GO TO STEP 4
4Engine Performance Inspection
Accelerate lightlyDoes the engine speed increase? NOChoke valve closed Clogged air cleaner Restricted fuel flow Clogged muffler Restricted fuel tank breather hose