Honda SH300 2006 Manual page 312

CRANKCASE/CRANKSHAFT
Install the two dowel pins.
Apply sealant (Three Bond 1207B or equivalent) to
the right crankcase mating surface.
Install the right crankcase over the left crankcase.
Install the crankcase bolts and tighten them in a
crisscross pattern in 2 or 3 steps.
14-16
RIGHT CRANKCASE
CRANKCASE BOLTS
DOWEL PINS
LEFT CRANKCASE