Honda 954 Service Manual page 341

Install the mainshaft and countershaft b y aligning the
countershaft bearing groove w i t h the set ring on t h e
crankcase, and aligning the bearing cap holes w i t h the
dowel pins.
Also align the countershaft bearing stopper pin w i t h
the groove in the crankcase.
Assemble the crankcase (page 11-12).
12-14