3-56 ENGINE CRANKCASE GEARSHIFT FORK AND GEARSHIFT CAM Removal • Remove the gearshift cam bearing retainer screws 1 and gearshift fork shaft retainer 2 from the lower crankcase. • Remove the gearshift fork shafts 3 and gearshift forks 4 from the lower crankcase. • Remove the gearshift cam 5 and its bearing 6. GEARSHIFT FORK-TO-GROOVE CLEARANCE E • Using a thickness gauge, check the gearshift fork clearance in the groove of its gear. L • The clearance for each gearshift fork plays an important role in the smoothness and positiveness of the shifting action. P Shift fork-to-groove clearance: M Service Limit: 0.5 mm (0.020 in)A 09900-20803: Thickness gauge • If the clearance checked is noted to exceed the limit specified, S replace the fork or its gear, or both. GEARSHIFT FORK GROOVE WIDTH • Measure the gearshift fork groove width using the vernier cali- pers. Shift fork groove width: Standard: 5.0 – 5.1 mm (0.197 – 0.201 in) 09900-20102: Vernier calipers