1998-2001 Honda Fourtrax Foreman TRX450S, TRX450ES Factory Service Manual, Page 407Get this manual
TROUBLESHOOTING
ENGI.NELACKS POWER
Possi lle cause 1Raise whee off the gound and spin by hand Wheel spins freely
Wheels do not spin fr,ee ly-Brake dragging Worn or damaged wheal bearing
2Check tire pressure Pressure low -
I Fau lty tife valve
Pu nctu red ti re
Pressure norma'i
3Check for slippingl clutch
4Accelerale
- Engine speed does not-I, Fuelair mixture too rich or tean increase Clogged air cleaner Engine speed Increase Restricted fue flow Clogged muffler P,nched fuelHU cap breather i
.Abnormal-Clutch slippin Worn clutch discsplates Warped clutch discsplates Weak clutch spring Additive lj'l engine oil
5Check Ignition timing Incorrect-Faulty ignition control module Faulty ilgniti on pulse genera,to r