Stihl 064

STIHL 064, 066 40
If the crankshaft does not turn freely, it is
sufficient to tap the end of the stub with a
plastic mallet to relieve axial stresses.
- Coat sealing lips of the oil seals with
lubricating grease - see 12.2.
- Push the oil seal over the ignition end of
the crankshaft (the open side of the seal
must face the crankcase) and use the
installing tool to press it home.
Important: The installed depth of the oil
seal must be maintained in order to
guarantee a good seal. Always use
installing tool 1128 890 3900.
- Slip the assembly sleeve over the clutch
end of the crankshaft.
- Push the oil seal over the assembly
sleeve (the open side of the seal must
face the crankcase) and use the
installing tool to press it home.
- Use a 5 mm (3/16") drift to drive the dowel
pin into the two halves of the crankcase -
from the chain tensioner side - and seal
hole at other side with plug.
- Fit new mounting screws (property class
12.9) and tighten them down alternately in
a diagonal pattern to 11 Nm (8.1 Ibf.ft).
Note: Trim away any excess gasket material
in the area of the cylinder mounting face.
Top:
Fitting plug in crankcase Top:
Pressing in oil seal at clutch side with
Bottom: press sleeve 1119 893 2401
Installation of oil seal at ignition side
using installing tool 1128 890 3900 Assembly sleeve 1122 893 4600 Bottom:
a = 4.3 mm
(
11/64"
)
in position Heat shield foil on ri
g
ht-hand side wall
A
ssembly of the remaining parts is a
reversal of the disassembly sequence.
Note: Stick the new heat shield foil in
position. To do this, first degrease the
crankcase surface. When sticking in place,
note than the heat shield must go up the
right-hand side wall (see illustration).