Sym RS-50 Service Manual page 85

9. CRANKCASE/CRANKSHAFT
Assemble the right crankcase with assembly tools.
Install right crankcase onto the crankshaft.
Install right crankshaft puller and install bush onto
crankshaft.
Screw the right crankshaft puller onto crankshaft.
Turn the puller in C.W. direction and then
completely screw the puller to bottom.
Lubricate crankshaft bearing and bearing seat with
2-stroke engine oil.
Install the bolts and tighten them.
Torque value: 1.0kgf-m
With right crank shaft install bush, install new oil
seal into the right crankcase. Its installation depth
is 4mm as the diagram shown.
With the specified tool to install a new oil seal onto
the left crankcase to the depth of 1 mm as the
diagram shown.
Caution
Make sure that the crankshaft can be rotated
freely after tightening the bolts.
Install the following components:
~ Final driving mechanism (chapter 8)
~ Alternator (chapter 6)
~ Piston/cylinder/cylinder head (chapter 7)
~ Oil pump (chapter 3)
~ Reed valve and carburetor (chapter 10)
~ Engine (chapter 4)
9-6
This chapter Contents
Oil seal
R. Crank shaft puller
R. Crank shaft
install bush
Bolts
R. Crank shaft
install bush
Oil seal driver