2003 2005 YFM45FAR, YFM450FAR Kodiak OEM Service Manual, Page 281Get this manual
FRONT AND REAR WHEELS
CHECKING THE BRAKE DISC 1.Check: Brake disc Gallingdamage Replace2.Measure: Brake disc deflection Out of specification Check the wheel runoutIf wheel runout is within the limits, replace the brake discBrake disc maximum deflection: 0.15 mm (0.006 in)