Installing The Crankshaft - Stihl 064 Service Manual

STIHL 064, 066
4.5.2 Installing the
Crankshaft
Top
Crankcase in correct assembly
sequence
Bottom:
Dowel pin
If the original crankcase is used
again, remove the gasket residue
and clean the mating surfaces -
they must be cleaned very thor-
oughly to ensure a perfect seal.
Note: If you install a new crank-
case, stamp the machine number
on the crankcase with 2.5 mm
(0.1") figure stamps.
- Check that dowel pin is in posi-
tion or fit it in the new crankcase.
Bottom:
Bottom:
Plastic plug
- Pull the plastic plug out of the oil
pump.
- Position the oil pump against the
crankcase. Fit and tighten down
the mounting screws.
Note: Before heating the crank-
case, remove all rubber and plas-
tic components, such as oil pickup
and delivery hoses, grommets, an-
nular buffers and levers - see 7.1
and 10.2. Check condition of all
parts and replace as necessary.
Top:
Oil ump fitted in position
Ball bearing in position
(flat side facing upward)
- Heat area of bearing seat on
clutch side of crankcase to
approx. 120 °C (250 °F).
- Place ball bearing with wider
outer race in position so that its
flat side points upward and then
press it in until it locates against
the oil pump.
Note: The ball bearing can be
fitted by hand if the crankcase is
heated as specified. However, this
operation must be carried out very
quickly because the bearing ab-
sorbs heat immediately and be-
gins to expand.
35