1970-1979 Ski-Doo Snowmobiles Service Manual, Page 36Get this manual

PERIODIC MAINTENANCE AND TUNE-UP
1Crankcase center mark 2Magneto ring aligning mark

CAUTION

Do not run engine more than necessary or excessive slider shoe wear may result

• ATV
• Jet Ski
• Outboard Motors
• Personal Watercraft
• Snowmobiles
• Stern Drives