Stihl MS 440 Service Manual

85MS 440, MS 440 C
14.1.2 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.
1)
Pull out the wire for this purpose
Component Ohmmeter connection
(use either test lead)
Resistance Ω If faulty
Lead 1 Lead 2 Spec. Actual Cause Abhilfe
Switch Switch
terminal
1)
Ground < 0.5 - Switch faulty Schalter ersetzen
Heating element in
handle
Plug
connector
on lead to
handle
heating
element
Plug
connector
on lead to
handle
heating
element
1.0 0.8...1.2 Heating element
OK
-Broken wire,
heating element
damaged
Replace heating
element or
insulate damaged
area
0 Short circuit –
damaged insulation
Heating element in
front handle
Connector
on wire
from front
handle
heating
element
Ground 7.0 6.0...8.0 Heating element
OK
- Break in wire,
heating element
damaged
Install new front
handle
0 Short circuit –
damaged insulation
Repair
insulation
Generator Connector
on wire
Ground 0.9 0.6...1.0 Generator OK

Stihl MS 440 Specifications

General

Displacement	70.7 cc
Chain Pitch	3/8"
Ignition system	Electronic
Starter	Recoil starter
Vibration reduction	Anti-vibration system
Weight (without bar and chain)	6.4 kg
Fuel tank volume	0.73 L
Oil Capacity	0.36 L
Guide Bar Length	40-63 cm
Guide Bar Length (recommended)	40-71 cm (16-28 in)