1983 Ski-Doo Shop Manual, Page 36Get this manual

SECTION 02 ENGINE SUB-SECTION 02 (277 ENGINE TYPE)
Install seal inside the crankcase, use no420277
865 pusher for magneto side and no 420876660 pusher for P.T.Oside

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