STIHL 064, 066 60
7. AV HANDLE SYSTEM
7.1 Repair
Annular buffers and plugs at Annular buffers and plugs at Rubber buffer on inboard side
clutch side ignition side of crankcase
The crankcase and tank housing Note: It is necessary to remove - Use a screwdriver to pry the
are connected by vibration damp- the tank housing, see 11.10, for annular buffer out of its seat.
ing rubber buffers. Damaged rub- access to the upper annular buffer.
ber buffers (annular buffers) must Note: It is necessary to remove
always be replaced. Remove the upper annular buffer the tank housing, see 11.10, for
Annular buffers must be replaced at the ignition side as follows: access to the rubber buffer on the
in sets of the same hardness inboard side of the crankcase.
(three degrees of hardness are - Remove the carburetor box cover.
available). Installing new annular buffers:
Harder buffers are installed for - Remove the air filter from the
more accurate control but reduced filter base. - Position annular buffer, washer
vibration damping, while the softer first, in crankcase seat.
buffers offer better vibration damp- - Pull off the spark plug terminal.
ing. - Insert the mounting screw and
- Remove the shroud. tighten it down firmly.
Removing annular buffers at
clutch side: - Remove fan housing. - Push the plug into the annular
buffer.
- Remove chain sprocket cover, - Pry out the plug with a screw-
chain and bar. driver. Note: Coat front bead on plug with
a little oil to ease installation.
- Take out the pan head screw and - Take out the mounting screw.
lift away the inner side plate. Assembly is now a reversal of the
- Use a screwdriver to pry the disassembly sequence.
- Pry out the plugs with a screw- annular buffer out of its seat.
driver.
No disassembly work is required
- Unscrew the annular buffer to remove the lower annular buffer
mounting screws. at the ignition side.
- Use a screwdriver to pry the an- - Pry out the plug with a screw-
nular buffers out of their seats. driver.
- Take out the mounting screw.
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