Honda SH125 Manual page 79

LUBRICATION SYSTEM
Make sure the
Apply engine oil to the drive chain and the drive
pump shaft is
sprocket of the crankshaft.
Set the drive chain over the driven sprocket, and
installed in the rotor
install them onto the drive sprocket and pump shaft.
properly.
Install the snap ring into the pump shaft groove
with the chamfered side facing the sprocket.
Install the sprocket cover by aligning the tab with
the slit in the housing and tighten the bolt.
Install the flywheel (page 12-13).
4-7