2004 Skidoo ZX Series Service Manual, Page 89Get this manual
Section 03 TROUBLESHOOTING Subsection 03 (TRANSMISSION AND BRAKE SYSTEM)
SYMPTOM
BRAKE SYSTEM IS NOISY
CONDITION
TESTINSPECTION
NORMAL USE 1Check brake pad thicknessaPads are worn outReplace2Check keykeywayaKeykeyway is worn outReplace parts
HYDRAULIC BRAKE
SYMPTOM SPONGY BRAKE CONDITION
CONDITION
TESTINSPECTION
NORMAL USE 1Contaminated brake fluidReplace brake fluid and bleed systemIf the problem persists, replace master cylinder