1999 Ski-Doo Factory Shop Manual Volume One, Page 107Get this manual

Subsection 03
Section 04 ENGINE (377, 443 AND 503 ENGINE TYPES)

ENGINE REMOVAL AND INSTALLATION
Disconnect or remove the following:
WARNING

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