BOMBARDIER Quest Max 2004, Operator'S Manual

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SYMPTOM: Engine lacks acceleration or power
POSSIBLE CAUSES WHAT TO DO
1. Fouled or damaged spark plug(s). Check item ENGINE TURNS OVER BUT FAILS TO
START.
2. Lack of fuel to engine. Check item ENGINE TURNS OVER BUT FAILS TO
START.
3. Carburetor adjustments. Contact an authorized Bombardier ATV dealer.
4. Engine is overheating. Check ENGINE OVERHEAT in SPECIAL PROCE-
DURES. If overheating persists, contact an autho-
rized Bombardier ATV dealer.
5. Air filter box plugged or dirty. Check air filter and clean if necessary.
Check deposits in air box drain.
Check the position of the air intake tube, reinstall
properly if necessary.
6. CVT dirty or wear. Contact an authorized Bombardier ATV dealer.
SYMPTOM: Engine backfire
POSSIBLE CAUSES WHAT TO DO
1. Exhaust system leakage. Contact an authorized Bombardier ATV 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 Bombardier ATV dealer.
4. Improper carburetor setting. Contact an authorized Bombardier ATV dealer.
SYMPTOM: Engine misfire
POSSIBLE CAUSES WHAT TO DO
1. Fouled/damaged/worn spark
plug(s).
Clean/verify spark plug(s) and heat range.
Replace as required.
2. Water in fuel. Drain fuel system and refill with fresh fuel.
SYMPTOM: Vehicle cannot reach full speed
POSSIBLE CAUSES WHAT TO DO
1. Engine. See ENGINE LACKS ACCELERATION OR POWER.
2. Parking brake. Ensure brake lever lock is completely removed.
3. Air filter box plugged or dirty. Check air filter and clean if necessary.
Check deposits in air box drain.
Check the position of the air intake tube, reinstall
properly if necessary.
4. CVT dirty or wear. Contact an authorized Bombardier ATV dealer.
vmo2004_011a.book Page 144 Thursday, May 15, 2003 1:46 PM