Stihl MS 461 - Testing the Ignition Module; Testing Ignition Module with MDG 1 Engine Analyzer

43MS 461, MS 461-R
The loop in the short circuit wire (1)
is between the crankcase and
ignition module cable retainer.
: Push the short circuit wire (1) into
the guide (2) – the protective
tube (3) must butt against the rib
(arrow).
Models with heating
: The generator wire (1) must be
properly seated in the guide
(arrow) – push it into place if
necessary.
3443RA202 TG
1
2
3
3443RA204 TG
1
All versions
: Position the insulating tube (1) so
that it butts against the grommet
(arrow).
The protective tube (1) with ignition
lead must be in the guide (arrow)
when the shroud in fitted.
– Fit the shroud, b 6.4
– Reassemble all other parts in the
reverse sequence.
7.3 Testing the Ignition
Module
Install a new spark plug before
starting the test.
The engine may start and
accelerate during the test.
– 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.
3443RA193 TG
1
3443RA194 TG
1
If a spark is visible, the ignition
system is in order.
– If no spark is visible in the
window, check the ignition
system with the aid of the
troubleshooting chart, b 7.7
The test refers only to a spark test,
not to ignition timing.
7.3.1 Testing Ignition Module
with MDG 1 Engine
Analyzer
The ignition module can be tested
simply, reliably and quickly with the
STIHL MDG 1.
The following points are checked
during the test:
– Ignition voltage
– Ignition spark
– Short circuit
– Remove the filter cover and air
baffle – secure the air filter in
place with the twist lock.
– Before starting the test, check the
spark plug and replace it if
necessary – use only spark plugs
recommended by STIHL.