Can-Am BOMBARDIER DS650 - Manual (Page 87)

ENGINE LACKS ACCELERATION OR POWER (cont’d)
4. Engine is overheating.
– Check ENGINE OVERHEATING in SPECIAL PROCEDURES.
– If overheating persists, contact an authorized Bombardier ATV dealer.
5. Air filter/box plugged or dirty.
– Check air filter and clean if necessary.
– Check liquid/deposits in air box drain tube.
– Check the position of the air intake tube.
ENGINE BACKFIRE
1. Faulty spark plugs (carbon accumulation).
– See ENGINE LACKS ACCELERATION OR POWER.
2. Exhaust system leakage.
– Contact an authorized Bombardier ATV dealer.
3. Engine is running too hot.
– See ENGINE LACKS ACCELERATION OR POWER.
4. Ignition timing is incorrect or there is an ignition system failure.
– Contact an authorized Bombardier ATV dealer.
5. Improper carburetor setting.
– Contact an authorized Bombardier ATV dealer.
ENGINE MISFIRE
1. Fouled/damaged/worn spark plugs.
– Clean/verify spark plugs and heat range. Replace as required.
2. Water in fuel.
– Drain fuel system and refill with fresh fuel.
UNUSUAL ENGINE NOISE
1. Valve adjustment.
– Contact an authorized Bombardier ATV dealer.
2. Chain tensioner plugged.
– Contact an authorized Bombardier ATV dealer.
3. Timing chain wear.
– Contact an authorized Bombardier ATV dealer.
VEHICLE CANNOT REACH FULL SPEED
1. Engine.
– See ENGINE LACKS ACCELERATION OR POWER.
2. Parking brake.
– Ensure brake lever lock is completely removed.
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