Ignition Timing; Testing The Ignition Module - Stihl MS 441 Manual

: Press ignition lead (1) into rubber
buffer and cable guides (arrow).
– Press boot onto spark plug.
– Reassemble all other parts in the
reverse sequence.
60
9.2

Ignition timing

The ignition timing is fixed and
cannot be adjusted.
2
Since there is no mechanical wear
1
in these systems, the ignition timing
cannot become maladjusted during
operation.
9.3 Testing the ignition
module
To test the ignition module, use
either the ZAT 4 ignition system
tester 5910 850 4503 or the ZAT 3
ignition system tester
5910 850 4520.
The ignition test refers only to
a spark test, not to ignition timing.
1 2
Using the ZAT 4 ignition system
tester 5910 850 4503
– Before starting the test, install
a new spark plug in the cylinder
and tighten it down firmly.
– Tightening torques, b 3.5.
: Connect spark plug boot to input
terminal (1). Push the tester's
output terminal (3) onto the spark
plug.
Beware of electric shocks due to the
high voltage.
: Crank engine quickly with rewind
starter and check the spark in the
tester's window (2).
MS 441, MS 441 C
3