BOMBARDIER Outlander 400 Operator's Manual page 96

ENGINE LACKS ACCELERATION OR POWER
1. Fouled or damaged spark plug.
– 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 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 deposits in air box drain.
– Check the position of the air intake tube.
6. CVT dirty or worn-out.
– Contact an authorized Bombardier ATV dealer.
ENGINE BACKFIRE
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.
ENGINE MISFIRE
1. Fouled/damaged/worn spark plug.
– Clean/verify spark plug and heat range. Replace as required.
2. Water in fuel.
– Drain fuel system and refill with fresh fuel.
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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