2003 Polaris Deep Snow Snowmobiles Service Manual, Page 306Get this manual
BRAKESFINAL DRIVE Jackshaft Removal
1Remove jackshaftNOTE: On models with pressed bearing on jackshaft, shaft will have to be brought through bulkhead slot in order to remove from unit2Inspect drive shaft and jackshaft in bearing contact areaIf diameter is .001 (.025 mm) less than non-contact area, shafts should be replaced
Jackshaft and Driveshaft Service Limit .001 (.025 mm)