2002-2006 Yamaha YFR450FAR Service Manual LIT-11616-16-01, Page 261Get this manual
REAR AXLEFINAL DRIVE GEAR AND DRIVE SHAFT G Remove
the ring gear assemblyG Measure the thrust clearanceCalculate the width of the flattened Plastigauge 1Ring gear thrust clearance: 0.10.2 mm (0.0040.008 in)
out of specification, select the correct washer
Thrust washer selection steps: Select suitable thrust washer using the following chartThrust washer 1.0 1.3 1.45 1.6 1.9 1.1 1.35 1.5 1.7 2.0 1.2 1.4 1.55 1.8 2.1