1970-1973 Ski-Doo Snowmobiles Technical Data Manual, Page 34Get this manual

PISTON TO WALL CLEARANCE 1970-71-72-73 MODELS 1970-71 MODELS
FITTED TOLERANCE

ENGINE TYPE

.003 to .004 inch

300,302,335,337,401 .0035 to .004 inch and 640 290,292,340,342,400 .004 to .005 inch 435,641 and 775 1972 MODELS
Engine Type

Tolerance

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