2005 Polaris Sportsman 400/500 Service Manual, Page 248Get this manual
BRAKES 7Install wheels and torque wheel nutsFront Wheel Nut Torque 27 ftlbs(37 Nm) 3Mount dial indicator as shown to measure disc runoutSlowly rotate the disc and read total runout on the dial indicatorReplace the disc if runout exceeds specifications
BRAKE BURNISHING PROCEDURE
It is required that burnishing procedure be performed after installation of new brake pads to extend service life and reduce noiseStart machine and slowly increase speed to 30 mphGradually apply brakes to stop machineAllow pads and disc to cool sufficiently during the procedureDo not allow pads or disc to become hot or warpage may resultRepeat this procedure 10 times
Brake Disc Runout Service Limit .010.254 mm