2004 Skidoo ZX Series Service Manual, Page 243Get this manual

Section 05 ENGINES (4-TEC) Subsection 04 (COOLING SYSTEM)
PRESSURE CAP
Check if cap pressurizes the systemIf not, install new 110 kPa (16 PSI) cap (do not exceed this pressure)

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