1970-1979 Ski-Doo Snowmobiles Service Manual, Page 18Get this manual
PERIODIC MAINTENANCE AND TUNE-UP Table SCHEDULED MAINTENANCE Monthly (or 40 hrsoperation) Weekly (or 10 hrsoperation) X
Check the following items at indicated intervals: Windshield Condition of skis and steering components Track condition and tension Throttle control Brake Emergency stop switch Lighting system Chaincase oil level In-line filter for contamination Drive belt Carburetor adjustments Ski alignment Fan belt tension Headlight adjustment Ski runner shoes Slide suspension wear bars All components for condition and tightness Drive and driven pulleys
Annually