2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 314Get this manual

2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 314

MASTER CYLINDER INSPECTION
1Clean the master cylinder assembly with clean Dot brake fluid, brake parts cleaner, or denatured alcoholDry thoroughlyInspect the bore for nicks, scratches or wearReplace if damage is evident or if worn2Inspect parking brake for wearIf teeth or locking cam are worn, replace lever
MASTER CYLINDER ASSEMBLY
1Install new primary and secondary seals on the pistonPrimary Seal

Secondary Seal