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SYMPTOM: Engine backfires.
POSSIBLE CAUSES
1. DESS did not read tether cord cap
code. DESS/RER pilot lamp blinks
once every 1.5 seconds.
Engine can not exceed 3000 RPM.
2. DESS has read a different code then
the one programmed. DESS pilot lamp
blinks rapidly (3 times per second).
Engine can not exceed 3000 RPM.
3. Faulty spark plug
(carbon accumulation).
4. Engine is running too hot.
5. Ignition timing is incorrect or there is
an ignition system failure.
SYMPTOM: Engine misfires.
POSSIBLE CAUSES
1. DESS did not read tether cord cap
code. DESS/RER pilot lamp blinks
once every 1.5 seconds.
Engine can not exceed 3000 RPM.
2. DESS has read a different code then
the one programmed. DESS pilot lamp
blinks rapidly (3 times per second).
Engine can not exceed 3000 RPM.
3. Fouled/defective/worn spark plugs.
4. Too much oil supplied to engine.
5. Water in fuel.
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WHAT TO DO
Properly install.
Install a tether cord cap (key) for which
this snowmobile was programmed.
See item 5 of ENGINE TURNS OVER BUT
FAILS TO START.
See item 6 of ENGINE LACKS ACCELER-
ATION OR POWER.
Contact an authorized SKI-DOO dealer.
WHAT TO DO
Properly install.
Install a tether cord cap (key) for which
this snowmobile was programmed.
Clean/verify spark plug gap and identifi-
cation number. Replace as required.
Improper oil pump adjustment, refer to
an authorized SKI-DOO dealer. On pre-
mixed models only, improper fuel/oil
mixture. Drain fuel tank and refill with
appropriate mixture ratio.
Drain fuel system and refill with fresh
fuel.
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