Test Connections And Test Values - Stihl MS 341 Shop Manual

14.7.2 Test Connections and Test Values

The pin and socket connections of
the wires in the rear handle must be
disconnected to test the individual
components separately.
Component
Switch
Heating element in
rear handle
Heating element in
front handle
Generator
1)
Pull out the wire for this purpose
MS 341, MS 361, MS 361 C
Ohmmeter connection
(use either test lead)
Lead 1 Lead 2
Switch Ground
1)
terminal
Terminal Terminal
socket pin from
from rear rear
handle handle
heating heating
element element
Connector Ground
on wire
from front
handle
heating
element
Connector Ground
on wire
Resistance W
If faulty
Spec.l Actual Cause
< 0.5 - Switch faulty
1.0 0.8...1.2 Heating element
OK
- Break in wire,
heating element
damaged
0 Short circuit –
damaged insulation
4.0 3.0...5.0 Heating element
OK
- Break in wire,
heating element
damaged
0 Short circuit –
damaged insulation
0.5 0.4...0.7 Generator OK
- Break in wire,
generator damaged
0 Short circuit –
damaged insulation
Remedy
Replace switch
Install new heating
element
Install new front
handle
Repair
insulation
Install new
generator
Repair
insulation
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