Ski-Doo Scandic WT 550F User Manual

TROUBLESHOOTING GUIDELINES
ENGINE BACKFIRES (cont’d)
2. D.E.S.S. has read a different tether cord cap (D.E.S.S. key) code than the
one programmed. D.E.S.S. pilot lamp blinks rapidly (3 times per second).
Engine can not exceed 3000 RPM.
– Install a tether cord cap (D.E.S.S. key) for which this snowmobile was pro-
grammed.
3. Faulty spark plug (carbon accumulation).
– See item 5 of ENGINE TURNS OVER BUT FAILS TO START.
4. Engine is running too hot.
– See item 6 of ENGINE LACKS ACCELERATION OR POWER.
5. Ignition timing is incorrect or there is an ignition system failure.
– Contact an authorized Ski-Doo dealer.
ENGINE MISFIRES
1. D.E.S.S. did not read tether cord cap (D.E.S.S. key) code. D.E.S.S. pilot
lamp blinks once every 1.5 seconds. Engine can not exceed 3000 RPM.
– Properly install tether cord cap (D.E.S.S. key).
2. D.E.S.S. has read a different tether cord cap (D.E.S.S. key) code than the
one programmed. D.E.S.S. pilot lamp blinks rapidly (3 times per second).
Engine can not exceed 3000 RPM.
– Install a tether cord cap (D.E.S.S. key) for which this snowmobile was pro-
grammed.
3. Fouled/defective/worn spark plugs.
– Clean/verify spark plug gap and identification number. Replace as required.
4. Too much oil supplied to engine (2-stroke).
– Improper oil pump adjustment, refer to an authorized Ski-Doo dealer.
5. Water in fuel.
– Drain fuel system and refill with fresh fuel.
SNOWMOBILE CANNOT REACH FULL SPEED
1. D.E.S.S. did not read tether cord cap
(D.E.S.S. key) code. D.E.S.S. pilot
lamp blinks once every 1.5 seconds. Engine can not exceed 3000 RPM.
– Properly install tether cord cap (D.E.S.S. key).
2. D.E.S.S. has read a different
tether cord cap (D.E.S.S. key) code than the
one programmed. D.E.S.S. pilot lamp blinks rapidly (3 times per second).
Engine can not exceed 3000 RPM.
– Install a tether cord cap (D.E.S.S. key) for which this snowmobile was pro-
grammed.
3. Drive belt.
– Check item 6 of ENGINE LACKS ACCELERATION OR POWER.
4. Incorrect track adjustment.
– See MAINTENANCE and/or an authorized Ski-Doo dealer for proper align-
ment and tension adjustments.
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Ski-Doo Scandic WT 550F Specifications

General

Brand	Ski-Doo
Model	Scandic WT 550F
Category	Offroad Vehicle
Language	English