Polaris 2013 WideTrak LX - Manual (Page 73)

69
MAINTENANCE
Spark Plugs
It’s very important to use the correct spark plug for your snowmobile. 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
the engine under medium or light duty to have spark plug failure.
NOTICE: 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. Refer to the specifications section beginning on
page 104.
A new engine can cause temporary spark plug fouling due to the
preservative added during the assembly process. Avoid prolonged idle
speeds, which cause plug fouling and carbonization.
• Use recommended spark plugs with the proper gap. Refer to the
specifications section beginning on page 104.
• Spark plug torque is 18-22 ft. lbs. (24.4-29.8 Nm).
• Always carry spare spark plugs in case of an emergency.
NOTICE: Using non-recommended spark plugs can result in serious engine
damage. Always use POLARIS-recommended spark plugs.