Operation Manual

153MS 241 C
14.1.3 Thermostatic switch
The thermostatic switch is an
electronic component that cannot
be tested directly. The functionality
of the thermostatic switch can be
determined using the
troubleshooting chart, b 14.2
– Remove the carburetor, b 13.5
: Remove screw (1)
: Remove thermostatic switch (2)
: Hold end cover (3) so that the
pump membrane and gasket
remain secured
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Installation
– Check that the pump diaphragm
and gasket are correctly seated
: Hold end cover (1) so that the
pump membrane and gasket
remain secured
: Position the thermostatic
switch (2) so that it rests against
the raised part (arrow)
: Screw in the screw (3) and
tighten it
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: Press lead (1) into the
guides (arrows) so that is is
behind the peg (2)
: Slide on the insulating tube (3)
– Install the carburetor, b 13.5
– Press the plug connection
together completely, b 1
– Reassemble remaining parts in
reverse order
– Check correct functioning
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