2004 Skidoo ZX Series Service Manual, Page 69Get this manual

Section 03 TROUBLESHOOTING Subsection 01 (ENGINE)
SYMPTOM

ENGINE DOES NOT OFFER MAXIMUM POWER ANDOR DOES NOT REACH MAXIMUM OPERATING RPM
CONDITION

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