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SYMPTOM:
POSSIBLE CAUSE
idles roughly, too
fast, stalls
WHAT TO DO
poor engine
performance at
altitudes above
3,000 feet.
Check engine idle adjustment
(page ). If the problem persists,
see your dealer.
Ask your dealer to modify the
carburetion with a high altitude jet.
Refer to
page .
runs erratically,
misfires
See your dealer.
blubbers (rich fuel
mixture)
See your dealer.
sooty exhaust (rich
fuel mixture)
See your dealer.
If applicable, switch to the
recommended octane gasoline
(page ) or change your brand of
gasoline. If the problem persists, see
your dealer.
detonates or pings
under load
See your dealer.
pre-ignition (runs on
after ignition
switched OFF)
See your dealer.
afterfires
(backfires)
96
112
186
Engine starts, but runs poorly.
HighAltitude Carburetor
Adjustment,
166
If Your Engine Quits or Won’t Start
Taking Care of the Unexpected
１１／０５／１３ １１：３３：５９ ３１ＨＰ２６４０ ０１７５
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