1997 Ski-Doo Factory Shop Manual Volume Two, Page 118Get this manual
Sub-Section 09
Section 03 ENGINE (ROTARY VALVE, COOLANT PUMP AND RESERVOIR)
To remove bearing, use bearing puller (ex Snap-on noCJ 950) and pusher (PN 420 8766 12) as illustrated.420 8765 12
420 8766 12
A16C0OA
INSPECTION
Inspect rotary valve cover for warpageSmall deformation can be corrected by surfacing with fine sand paper on surface plateSurface part against oiled sand paperInspect bearingsCheck for scoring, pitting, chipping or other evidence of wearMake sure plastic cage (on bigger bearing) is not meltedRotate them and make sure they turn smoothlyCheck for presence of brass fillings in gear housingVisually check gear wear patternIt should be even on tooth length all aroundOtherwise it could indicate bent shaft; check deflectionReplace gear if damagedRefer to ENGINE DIMENSION MEASUREMENT 03-04