2003 Polaris Deep Snow Snowmobiles Service Manual, Page 199Get this manual
DRIVEDRIVEN CLUTCHES Assembly, Cont7Install retainer (where applicable on P-90) spacer washer(s), and snap ringSnap ring should be installed with flat (machined) side up or toward jackshaft bearingNOTE: On models equipped with snap ring retainers as shown below, retainer may stay on back of snap ring when clutch is removedPry lightly to remove retainer and gain access to snap ring(Refer to illustration below