Testing Heating Element In Front Handle - Stihl MS 341 Shop Manual

14.4 Testing Heating Element
in Front Handle
2
– Remove the interlock lever – b
10.2.1 or 10.2.2
: Take the wire (1) out of the guide
(arrow).
: Pull the insulating tubes (2) off
the connectors.
– Separate the pin and socket
connectors.
– Remove the chain sprocket cover
– b 5.1
: Connect one ohmmeter test lead
to the wire with socket (1).
MS 341, MS 361, MS 361 C
1
1
: Connect the other ohmmeter test
lead to the ground wire.
: If it is difficult to obtain good
contact, take out the screw (1)
and connect the test lead to the
terminal.
1
: Move heater switch (1) to " # ".
– Set ohmmeter to "W".
Carry out the measurement at an
ambient temperature of + 25 °C
(77 °F).
If the system is in order, the
ohmmeter will show a reading of
about 4 W in measuring range "W".
If no reading is obtained or an
infinitely high value is shown, there
is a break in the circuit. Install a new
front handle.
– Remove the test leads.
– Further operations – b 14.5
Install in the reverse sequence.
Checking operation of heating
element
Run the saw at maximum revs for
no more than 30 seconds with the
heating switched on. The front
handle must warm up noticeably.
1
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