Heating Element With Thermostatic Switch; Handle Heating System Troubleshooting - Stihl MS 460 Service Manual

13.3 Heating Element with
Thermostatic Switch
2
1
– Remove the heating element,
b 12.2.1
: Disconnect the pin and socket
connectors (1 + 2) of both wires.
Do not bend or twist the pin and
socket connectors during removal
or installation.
Reassemble in the reverse
sequence.
After fitting the baffle plate, position
the pin and socket connector so that
it is straight.
MS 460, MS 460 C
14. Handle Heating System
14.1 Troubleshooting
The entire handle heating system is
maintenance-free and subject to
practically no wear. Faults in the
generator, heating elements and
wiring are generally caused by
mechanical damage.
There are two reasons for failures in
the heating system:
1. A break in the circuit due to a
faulty wire or component.
2. A short circuit resulting from
damage to the insulation.
The heating element in the rear
handle may overheat and fail if it is
not bonded firmly in position, i.e.
completely flat (no creases).
Tracing the
cause of a fault
– Remove the interlock lever,
b 10.2
: Push back the insulating tube
(arrow) on the pin and socket
connector of the wire between
the generator and rear handle
heating element.
: Separate the pin and socket
connector.
: Set the heater switch (arrow)
to " # "
– Set the ohmmeter to "W".
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