2008 Polaris ATV Outlaw 450/525 Service Manual, Page 139Get this manual
BRAKES Polaris DOT Brake Fluid
5Install box end wrench on the bleeder screwAttach clean, clear hose to fitting and place the other end in clean containerBe sure the hose fits tightly on fittingBleeder Screw "MXR""S" Shown
Rear Reservoir Fuild Level: Add to MAX level shown on the outside of the rear reservoir11Field test machine at low speed before putting into serviceCheck for proper braking action and lever reserveWith lever firmly applied, lever reserve should be no less than 12" (1.3 cm) from handlebar12Check brake system for fluid leaks and inspect all hoses and lines for wear or abrasionReplace hose if wear or abrasion is found
Bleeder Screw
MASTER CYLINDER