2009 Polaris Scrambler 500 4x4 2x4 factory service manual, Page 203Get this manual
BRAKES 6Verify fluid level in reservoir is up to MAX line inside reservoir and install reservoir capBrake Disc Thickness New .150-.164 (3.810-4.166 mm) Service Limit .1403.556 mm Master Cylinder Fluid Up to MAX line inside reservoir Brake Disc Thickness Variance Service Limit: .002 (.051 mm) difference between measurements7Install wheels and torque wheel nutsFront Wheel Nut Torque 20 ftlbs(27 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