2002-2006 Yamaha YFR450FAR Service Manual LIT-11616-16-01, Page 271Get 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)