Stihl MS 461 - Heating Element in Rear Handle

98 MS 461, MS 461-R
13.5 Heating Element in Rear
Handle
The heating element must lie
completely flat on the inside of the
rear handle to guarantee trouble-
free operation. Therefore, make
sure the heating element needs to
be replaced before detaching it.
– Remove the handle molding,
b 10.2
Testing the heating element
: Push back the insulating
tubes (1) in the direction of the
wiring harness and separate the
pin and socket connectors.
: Test the heating element, replace
it if necessary.
If the heating element is in good
condition the ohmmeter will indicate
a value of about 2 Ω in measuring
range "Ω".
If the reading is outside this range,
install a new heating element.
3443RA414 TG
1
1
100
50
30
20
10
5
0
20
1
0
5
2
3443RA415 TG
Heating element does not operate
even though resistance
measurement is ok?
– Test the generator and heater
switch, b 13.3
Replacing the heating element
The ambient temperature during
removal and installation should not
be less than + 15°C.
– Remove the lockout lever,
b 10.2
Pin and socket connectors are
already disconnected.
: Pull out the pressure pad (1).
: Detach heating element (1) from
inside the rear handle and
remove any adhesive residue –
hollows created by adhesive
residue may prevent heat being
transferred to the handle and
cause the new heating element to
overheat.
3443RA416 TG
1
3443RA417 TG
1
Installing
: Hold the new heating element (1)
so that the wire connection faces
the edge (arrow) and the
contours of the heating element
match those in the rear handle.
: Bond the new heating
element (1) to the bottom of the
rear handle first, then to the sides
– the heating element must lie flat
without bubbles.
If the heating element is not
properly bonded, heat transfer to
the handle will be interrupted and
the element may fail as a result of
overheating.
: Push the pressure pad (1) into
the rear handle so that its straight
side butts against the handle's
edge and the wires project at the
recess (arrow) - take care not to
detach the heating element while
pushing the pressure pad into
position.
3443RA418 TG
1
3443RA420 TG
1