1999 Ski-Doo Factory Shop Manual Volume One, Page 74Get this manual

Section 03 TROUBLESHOOTING Subsection 04 (TRANSMISSION AND BRAKE SYSTEMS)
HYDRAULIC BRAKE
SYMPTOM CONDITION TestInspection SYMPTOM CONDITION TestInspection SPONGY BRAKE CONDITIONNORMAL USE

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