1997 Ski-Doo Factory Shop Manual Volume Three, Page 154Get this manual
Section 05 ELECTRICAL Sub-Section 04 (SPARK PLU S)
SPARK PLU IN STALLATIO N
Prior to installation make sure that contact surfaces of the cylinder head and spark plug are free of grime1Using wire feeler gauge, set electrode gap according to TECHNICAL DATA 09-022Apply anti-seize lubricant (PN 413 7010 00) over the spark plug threads to prevent possible seizure3Hand screw spark plug into cylinder head and tighten with torque wrench and proper socket1 2