2003 Ski-Doo ZX Series Factory Shop Manual, Page 155Get this manual

Subsection 06
Section 04 ENGINE (OIL INJECTION SYSTEM)

OIL INJECTION SYSTEM
377, 503 and 552 Engines
Recommended injection oil

9 Nm (80 lbfin) 2

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