2002 Ski-Doo Shop Manual Volume Three, Page 113Get this manual
Section 04 ENGINE Subsection 02 (377 AND 503 ENGINE TYPES)
Remove piston from connecting rodInstall locating sleeveThen push needle bearings along with thrust washers and sleeve
A02C2FA
A02C2GA
TYPICAL 1Locating sleeve 2Sleeve
NOTE: 0.25 and 0.5 mm oversized piston and rings are available if necessaryUse locking tie to fasten all needles and thrust washers along with locating sleeve
TYPICAL 1Sleeve
Grease thrust washers and install them on each end of needlesInsert cageless bearing into connecting rod