Honda FourTrax Recon TRX250TM 2019, Owner'S Manual, Page: 174 / 225

Taking Care of the Unexpected 164
If Your Engine Quits or Won’t
Start
SYMPTOM: Engine starts, but runs poorly.
POSSIBLE CAUSE WHAT TO DO
idles roughly, too fast,
stalls Check engine idle adjustment
(page 112). If the problem
persists, see your dealer.
poor engine
performance at
altitudes above 3,000
feet (1,000 m) Ask your dealer to modify the
carburetion with a high
altitude jet.
Refer to
High Altitude
Carburetor Adjustment ,
page 185.
runs erratically, misfires May damage catalytic
converter. See your dealer.
blubbers (rich fuel
mixture) See your dealer.
sooty exhaust (rich fuel
mixture) See your dealer.
detonates or pings
under load If applicable, switch to the
recommended octane gasoline
(page 91) or change your
brand of gasoline. If the
problem persists, see your
dealer.
afterfires (backfires) May damage catalytic
converter. See your dealer.
pre-ignition (runs on
after ignition switched
OFF) May damage catalytic
converter. See your dealer.
19 TRX250TM-31HS0630.book Page 164 Thursday, April 5, 2018 3:37 PM