Can-Am DS 90 Operator's Manual page 113

ENGINE TURNS OVER BUT FAILS TO START (cont'd)
6. Engine compression.
– As the engine is pulled over with the kick stater, "cycles" of resistance
should be felt as piston goes past top dead center. If no pulsating resistance
is felt, it suggests a major loss of compression. Contact an authorized
Can-Am dealer.
ENGINE LACKS ACCELERATION OR POWER
1. Fouled/damage/worn spark plug.
– Clean/verify spark plug and heat range. Replace as required.
2. Lack of fuel to engine.
– Check item ENGINE TURNS OVER BUT FAILS TO START.
3. Carburetor adjustments.
– Contact an authorized Can-Am dealer.
4. Engine is overheating.
– If engine overheats try the following:
• Reduce vehicle speed but try to keep vehicle moving to supply air to engine.
If engine is still overheating after approximately one minute, stop vehicle.
• Apply parking brake and stop engine.
• Let engine cool down.
• See an authorized Can-Am dealer as soon as possible.
– If overheating persists, contact an authorized Can-Am dealer.
5. Air filter/box clogged or dirty.
– Check air filter and clean if necessary.
– Check the position of the air intake tube.
6. CVT dirty or wear.
– Contact an authorized Can-Am dealer.
ENGINE BACKFIRE
1. Exhaust system leakage.
– Contact an authorized Can-Am dealer.
2. Engine is running too hot.
– See ENGINE LACKS ACCELERATION OR POWER.
3. Ignition timing is incorrect or there is an ignition system failure.
– Contact an authorized Can-Am dealer.
4. Improper carburetor setting.
– Contact an authorized Can-Am dealer.
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TROUBLESHOOTING GUIDELINES
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