1986-1987 Honda TRX350 FourTrax 4X4, 1987-1989 TRX350D Foreman 4X4 Service Manual, Page 290Get this manual
TROUBLESHOOTING
ENGINE LACKS POWER
Probable Cause
1Raise wheels off ground and
spin by hand WHEEL SPINS FREELY
WHEEL DOES NOT FREELY
Brake dragging Worn or damaged wheel bearing Wheel bearing needs lubrication Faulty final gear Faulty differential gear Punctured tire Faulty tire valve
tl" p'muee with the 9'"ge
PRESSURE
PRESSURE NORMAL
3Chtck for slipping clutch
CLUTCH SLIPS
Weak clutch spring Worn clutch discsplates Warped clutch discsplates Fuelair mixture too rich or lean Clogged air cleaner Restricted fuel line Clogged fuel tank cap breather holeor tube Clogged muffler Oil level too high Oil level too low Contaminated oil
4Lightly accelerate engine
ENGINE SPEED INCREASED
ENGINE SPEED NOT INCREASED SUFFICIENTLY
5Remove all level gauge and