Wiring Harness - Stihl MS 650 Manual

Installing
: Fit the connector (1).
: Position the contact spring below
the pin (2).
: Clip the contact spring to the pin.
: Pull the front end of the contact
upwards onto the cam.
54
7.5 Testing Wiring Harness
1
2
If the spark plug and ignition lead
with spark plug boot are in order,
check the resistance of the short
circuit wire, ground wire and contact
spring.
– Remove the fan housing with
rewind starter – b 8.2
: Disconnect short circuit wire (1).
– Connect the ohmmeter to ground
and the short circuit wire.
– Set Master Control lever to "$"
The resistance measured must be
about 0 Ω. If it is much higher, the
reason is a break in the wire. The
wire or contact spring has to be
replaced.
– Set Master Control lever to "#"
The resistance measured must be
infinitely high. If not, fit a new short
circuit wire.
If no fault can be found, carry out
further checks:
– Inspect the flywheel for damage –
b 7.3
– Check air gap between flywheel
and ignition module – b 7.2.1
It neither of these checks reveals a
1
fault, install a new ignition module –
b 7.2.1
Reassemble in the reverse
sequence.
MS 650, MS 660