2005 Ski-Doo Racing Handbook, Page 364Get this manual
SECTION 082005 MX 550 AND 380 FC
When installing new cageless bearing, replace half plastic cages by sleeve
A02C2EA
TYPICAL
Remove piston from connecting rodInstall locating sleeveThen push needle bearings along with thrust washers and sleeveA02C2GA
TYPICAL 1Sleeve
Grease thrust washers and install them on each end of needlesInsert cageless bearing into connecting rod
A02C2FA
TYPICAL 1Locating sleeve 2Sleeve