Stihl 064 Service Manual page 34

STIHL 064, 066
Top:
1 = Crankshaft
2 = Connecting rod
Bottom:
Prying out oil seal at clutch side
- The crankshaft, connecting rod
and needle bearing form an in-
separable unit. This means that
the crankshaft must always be
replaced as a complete unit in
the event of damage to any one
of these parts. When fitting a
replacement crankshaft always
install new oil seals and ball bear-
ings.
- Remove the gasket from the
crankcase sealing face.
- Pry the oil seal out of the ball
bearing at the clutch side.
Top:
Pressing out ball bearing at clutch side
with press arbor 1119 893 7200
Bottom:
Knocking out oil seal at ignition side
- Use press arbor to press the ball
bearing out of its seat.
- Use a screwdriver or similar tool
to knock the oil seal out of its
seat at the ignition side.
- From inside the crankcase, use
arbor 1122 893 7200 to press the
ball bearing out of its seat.
Pressing out ball bearing at ignition
side with arbor 1122 893 7200
- Pull the oil pickup hose out of bore
in crankcase.
- Inspect the two halves of the
crankcase for cracks and replace if
necessary.
Note: The crankcase must be re-
placed as a complete unit even if only
one half is damaged.
All other parts which are still serv-
iceable can then be transferred to the
new crankcase after the new bearings
have been fitted, i.e. the crankcase
has to be heated for this purpose.
Note: Use the stud puller to remove
and install the bar mounting studs
- see 3.5.
34