Stihl MS 341

Online version - not for reprint
51MS 341, MS 361, MS 361 C
: Slide the setting gauge (1)
1111 890 6400 between the arms
of the ignition module and the
raised edge of the flywheel.
– Press the ignition module against
the setting gauge.
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: Tighten down the screws (2)
firmly – b 3.5
– Remove the setting gauge and
use a feeler gauge to check the
air gap. It should be 0.2 mm.
Reassemble all other parts in the
reverse sequence.
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.
Using the ZAT 4 ignition tester
5910 850 4503
– Before starting the test, install a
new spark plug in the cylinder
and tighten it down firmly – b 3.5
: Connect spark plug boot to the
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3
21
input terminal (1). Push the
tester’s output terminal (3) onto
the spark plug.
: Crank the engine quickly with the
rewind starter (min. 1,000 rpm)
and check spark in the tester’s
window (2).
Warning!
The engine may start and
accelerate during the test.
If a spark is visible, the ignition
system is in order. If no spark is
visible in the window (2), check the
ignition system with the aid of the
troubleshooting chart – b 7.4
Using ZAT 3 ignition tester
5910 850 4520
– Before starting the test, install a
new spark plug in the cylinder
and tighten it down firmly – b 3.5
: Connect spark plug boot to the
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2
ZAT 3
5910 850 4520
3 4
1
terminal (2).
: Attach ground terminal (1) to the
spark plug.
: Use adjusting knob (3) to set
spark gap to about 2 mm.
7.1.3 Testing the Ignition
Module