2004 Skidoo ZX Series Service Manual, Page 124Get this manual
Section 04 ENGINES (2-STROKE) Subsection 01 (377 AND 552 ENGINE TYPES)
To check proper clearance between bearing no3 and crankshaft counterbalanceuse feeler gauge (PN 420 876 620)Mount second bearing with distance gauge (PN 420 876 822) for 377 for proper positioning1 2
CAUTION: Bearing should not be heated to more than 80C (176F)Do not heat bearing with direct flame or heat gun or heated oilInappropriate heating procedure(s) may cause inner seal failureTurn bearing(s) several times during heating process for heating it (them) properlyNOTE: Normally it takes approximately 10 minutes to heat up bearing so in the event of replacing bearing, it's recommended to start the bearing heating process prior to removal operationTwo bearings can be heated at the same time on one bearing heaterA00C46A