Honda CRF50F 2004-2015 Service Manual page 118

CLUTCH/GEARSHIFT LINKAGE
9-14
INSTALLATION
Install the collar onto the crankshaft.
Install the primary driven gear onto the mainshaft
and secure it with the snap ring.
Apply engine oil to the clutch center guide and
install
it
onto the crankshaft.
Install the primary drive gear.
Install the clutch assembly onto the crankshaft.
Install a new 14 mm lock washer by aligning its
short tabs with the grooves in the drive plate.