Honda FOURTRAX FOREMAN 4X4 TRX500FM 2009 Owner's Manual page 194

If Your Engine Quits or Won't Start
SYMPTOM:
POSSIBLE CAUSE
idles roughly, too
fast, stalls
poor engine
performance at
altitudes above
3,000 feet (1,000 m)
high oil temperature
runs erratically,
misfires
blubbers (rich fuel
mixture)
sooty exhaust (rich
fuel mixture)
detonates or pings
under load
afterfires (backfires)
pre-ignition (runs on
after ignition
switched OFF)
Taking Care of the Unexpected
186
Engine starts, but runs poorly.
Check engine idle adjustment (page
134
your Honda dealer.
Ask your Honda dealer to modify the
carburetion with a high altitude jet.
Refer to
Adjustment,
Check the high oil temperature
indicator. Refer to
T emperature Indicator Lights,
page
May damage catalytic converter.
See your Honda dealer.
See your Honda dealer.
See your Honda dealer.
If applicable, switch to the
recommended octane gasoline
(page
gasoline. If the problem persists, see
your Honda dealer.
May damage catalytic converter.
See your Honda dealer.
May damage catalytic converter.
See your Honda dealer.
WHAT TO DO
). If the problem persists, see
High Altitude Carburetor
page
If the High Oil
191 .
107 ) or change your brand of
209 .