Removal
Split the crankcase (see Crankcase Splitting).
Remove the drive shaft [A] and output shaft [В].
Installation
Check to see that the set pins [A] and set rings [B] are in place.
Install the drive shaft and output shaft into the upper crankcase half.
Apply engine oil to the sliding surfaces of the gears and bearings.
The bearing set pins and rings must match properly with the holes or grooves in the bearing outer races. When they are properly matched, there is no clearance between the crankcase and the bearing outer races.