Stihl 064 Service Manual page 67

STIHL 064, 066
9.2 Switch
Withdrawing contact sleeve
To remove the switch:
- Remove the carburetor box
cover, air filter and filter base.
- Remove the carburetor - see
11.4.
- Take the two ground wire termi-
nals off the twin connector tag.
- Push the grommet back a little
and use pliers to pull the wire's
contact sleeve out of the switch.
- Unscrew the switch mounting nut
(14 mm socket wrench).
- Remove the switch from inside
the carburetor box.
- Remove the ring and twin con-
nector tag from the switch.
Fit the new switch:
- Slip the twin connector tag and
ring over the switch's thread.
- Install the switch from inside the
carburetor box (tank housing).
1 = Grommet
2 = Switch
3 = Twin connector tag
4 = Ring
5 = Hexagon nut
Note: The two connector tags
must face forward.
- Fit the hexagon nut from outside
and tighten in down.
- Use pointed nose pliers to push
the contact sleeve into the switch.
- Push the grommet over the
switch.
- Connect the two ground wires to
the twin connector tag.
Assembly is now a reversal of the
disassembly sequence.
9.3 Heating Element in
Rear Handle
Plug connections in rear handle
To replace the heating element,
first remove the carburetor box
cover and handle molding - see
8.2.
- Separate the plug connection of
the handle heating system.
- Take the pressure pad and heat-
ing element out of the handle re-
cess.
Important: Before fitting the new
heating element, clean the surface
inside the handle so that it is free
from grease, dirt and moisture.
- Remove the backing paper from
the new heating element.
- Press the heating element firmly
and uniformly into position, taking
special care at the corners and
along the edges.
Important: Creases must be
avoided. If the heating element
is not fitted perfectly flat, heat
transfer will be interrupted and the
element may fail as a result of
overheating. The ambient tempe-
rature during installation should
not be less than +15 °C (60 °F).
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