2001 Polaris Sportsman 400-500 DUSE and H.O. Service Manual, Page 310Get this manual
FLUID REPLACEMENTBLEEDING PROCEDURE
NOTE: When bleeding the brakes or replacing the fluid always start with the caliper farthest from the master cylinderCAUTION: Always wear safety glassesCAUTION: Brake fluid will damage finished surfacesDo not allow brake fluid to come in contact with finished surfaces
BRAKE BLEEDINGFLUID CHANGE
This procedure should be used to change fluid or bleed brakes during regular maintenance1Clean reservoir cover thoroughly2Remove screws, cover and diaphragm (C) from reservoir3Inspect vent slots (A) in cover and remove any debris or blockage4If changing fluid, remove old fluid from reservoir with Mity Vac pump or similar toolNOTE: Do not remove brake lever when reservoir fluid level is lowD Sight Glass B