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MAINTENANCE
General Maintenance
Spark Plugs
It’s very important to use the correct spark plug for your machine. A
spark plug with a heat range too high will cause engine damage. A
spark plug with a heat range too low will cause excessive fouling and
engine malfunctioning.
In selecting a spark plug heat range for production, a manufacturer
assumes that the engine will be operated under extreme heavy duty
conditions and selects a spark plug that will protect the engine from
internal damage if the purchaser actually does operate the engine in this
manner. This selection could cause the customer who normally
operates t he engine under medium or light duty to have spark plug
failure. Refer to your Owner’s Manual Supplement for the specific
spark plug to be used in your machine.
A new engine can cause temporary spark plug fouling due to the
preservative added during t he assembly process. Avoid prolonged idle
speeds, which cause plug fouling and carbonization.
S Use recommended spark plugs with the proper gap. Refer to your
Owner’s Manual Supplement for specific information.
S Spark plug torque is 18-22 ft. lbs. (24.4-29.8 Nm).
S Always carry spare spark plugs in case of an emergency.
A spark plug with a heat range too high will always cause engine
damage if the engine is operated in conditions more severe than
intended for that plug. Always use the spark plugs recommended
for your snowmobile. See your Owner’ s Manual Supplement.
CAUTION
Using non-recommended spark plugs can result in serious engine
damage. Always use the recommended spark plugs.
CAUTION
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