1981 Ski-Doo Shop Manual Supplement, Page 31Get this manual

SECTION 03 SUB-SECTION 02 (ENGINES)
354-454 ENGINE TYPES
For service information on the 1981- 354 and 454 engine types, refer to the 1980 Bombardier Snowmobiles Shop Manual section 03-02 (354-454 engine types)For service procedure on the folowing items

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