14.1.3 Thermostatic Switch - Stihl MS 661 Manual

3
The black M-Tronic wire (1)
must be underneath the heating
element's black wire (2) in the
guides.
: Push the heating element's black
wire (2) into the guides (arrows) –
loop (3) allows for movement.
– Reassemble all other parts in the
reverse sequence.

14.1.3 Thermostatic Switch

The thermostatic switch is an
electronic component that cannot
be tested directly. Check operation
of thermostatic switch with the aid of
the "Troubleshooting Chart",
b 14.2.
– Remove the carburetor, b 13.4
MS 661, MS 661 C-M
2
2
1
1
1
: Take out the screws (1) and
remove the thermostatic
switch (2).
Do not loosen the fourth screw (3)
– end cover (4), pump diaphragm
and gasket remain fixed in position.
Installing
: Push the wire (1) into the guides
(arrows).
1
4
3
1
1 2
2
2
: Fit the thermostatic switch (1) so
that it engages the recesses
(arrows).
: Insert and tighten down the
screws (2) firmly.
– Install the carburetor, b 13.4
– Check operation with
"Troubleshooting Chart", b 14.2
– Reassemble all other parts in the
reverse sequence.
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