2004-2005 Honda TRX450R Factory Sevice Manual, Page 329Get this manual
TROUBLESHOOTING
ENGINE LACKS POWER
1Drive Train Inspection
Raise heel off he ground and spi it by handDoes he wheespin freely?
YESGO TO STEP 2
- Bra ke dragg ing rn or dama ed wheel hub or axle bearing
Drive chain too tig ht
2Tire Press ure Inspectio Check tire press re
Are the tire pressures low?
YES NO _Faulty tire valve Punctu red tireGO TO STEP 3
3Clutch Inspection
Accelerate rapid ly from low to second
Does the engine speed cha ngB 8Cf:ordingly hen clutch is engaged?
YESGO TO STEP 4
Clutch slipping Worn clutch discs Wa rped clutch plates Weak clu tc sp ri ngs
Damaged clutch lifte arm