1. Remove the reverse shift holder.
2. Remove the reverse idler gear shaft and reverse idler gear.
1. Remove the interlock guide bolt from under the clutch housing.
2. Remove the shift arm B attaching bolt.
3. Remove the mainshaft and countershaft assemblies with the shift fork from the clutch housing.
NOTE: Before removing the mainshaft and countershaft assemblies, tape the mainshaft spline to protect it.