Operators Manual

English - 57
Repair instructions
7.23 Assembling the crankshaft and
crankcase
Check the crankshaft as set out in the section
”Inspecting the crankshaft”.
Fit the new bearing in the crankcase using a press
tool.
During press fit of the bearing don’t push the inner
bearing to fit
Assemble the piston on the crankshaft.
Lubricate the big-end bearing with a few drops
of engine oil and position the crankshaft in the
crankcase. Use new gasket.
Insert the crankshaft into the crankcase bearing.
Flywheel side might be tight. Use a press tool. don’t
use a hammer. During this process hold the inner
bearing from the back side by a solid piece.
Assemble the crankcase by using a new gasket
and cut off the ends of the gasket.
Assemble the oil seal into the crankcase using
a press tool. And do not damage the oil seal lip
during this process.
Assemble the cylinder on the piston. Use a new
gasket.
Install the key onto the crankshaft. Upper surface of
the key should be in parallel to the crankshaft axis