Stihl 064

STIHL 064, 066 26
Always check and, if necessary, repair the
fuel system, carburetor, air filter and ignition
system before looking for faults on the
engine.
- Troubleshooting chart - see 2.2.
- Drain the fuel and oil tanks.
- Remove the shroud - see 3.2.
- Unscrew the spark plug.
- Remove the muffler - see 4.1.
- Remove the carburetor - see 11.3.
- Pull the washer off the studs and
remove the sleeve from the manifold.
Note: The previous backing plate
and gasket were replaced by the
washer and sleeve from machine
number X 20 742 548.
Reassemble in the reverse sequence.
4.2 Exposing the Cylinde
r
4.3 Cylinder and Piston
4.3.1 Removal
Top:
Throughholes to cylinder base Top:
screws Removing cylinder gasket
Bottom: Bottom:
1 = Washer Removing cylinder and pushing 1 = Hose clamp
2 = Sleeve manifold out of tank housin
g
2 = Manifold
- Release and unscrew the cylinder - Release the hose clamp on the
base screws. manifold. Pull the manifold off the intake
port.
- Pull the cylinder off the piston and, at
the same time, push the manifold - Inspect the cylinder and replace
through the tank housing opening. it if necessary.
Caution: Do not use pointed or Note: If a new cylinder has to be
sharp-edged tools for this job. installed, always fit the matching
piston. Replacement cylinders are
- Remove the cylinder gasket. only supplied complete with piston
for this reason. If a new piston is
needed, only fit the special re-
placement piston.