2009 Polaris Outlaw 450/525 Service Manual, Page 158Get this manual
BRAKES TROUBLESHOOTING
Brakes Squeal
Dirtycontaminated friction pads Improper alignment Worn disc Worn disc splines Glazed brake pads
Poor Brake Performance
Air in system Water in system (brake fluid contaminated) Caliperdisc misaligned Caliper dirty or damaged Brake line damaged or lining ruptured Worn disc andor friction pads Incorrectly adjusted lever Incorrectly adjusted stationary pad Worn or damaged master cylinder or components Improper clearance between lever and switch