Stihl MS 192 T Manual page 43

9. Ignition System
Exercise extreme caution while
carrying out maintenance and repair
work on the ignition system. The
high voltages which occur can
cause serious or fatal accidents.
Troubleshooting on the ignition
system should always start with the
spark plug, b 4.5
– Remove the fan cover, b 9.1.1
2
1
The electronic ignition system
basically consists of an ignition
module (1) and flywheel (2).
42
9.1 Ignition Module
1 2
The ignition module accommodates
all the components required to
control ignition timing. There are
two electrical connections on the
coil body:
: High-voltage output (1) with
permanently fitted ignition lead
: Connector tag (2) for the short
circuit wire.
Testing in the workshop is limited to
a spark test. A new ignition module
with ignition lead must be installed if
no ignition spark is obtained (after
checking that the wiring and stop
switch are in good condition),
b 9.1.1
Ignition timing is fixed and cannot
be adjusted during repair work.
Since there is no mechanical wear
in these systems, ignition timing
cannot get out of adjustment during
operation.
9.1.1 Removing and installing
1
: Take out the screws (arrows) and
remove the fan housing (1) with
rewind starter.
1
: Turn the twist lock (arrow)
anticlockwise to release it and
remove the carburetor box
cover (1).
1
: Apply a suitable tool to the tab
(arrow) to prise the boot off the
spark plug (1).
MS 192 T