Ignition Module - Testing; Ignition Module And Flywheel - Husqvarna 340 Workshop Manual

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Ignition module – testing
If there is a fault in the ignition system the ignition
module must be tested before the ignition system
is removed.
Test the ignition module as follows:
• Connect a test spark plug 502 71 13-01 to the
ignition lead and clip the test spark plug onto the
cylinder.
• Turn the engine over using the starter cord.
• If the test spark plug produces a spark the
ignition module is OK.
Ignition module/flywheel – removal
1
Remove the cylinder cover. Disconnect the HT lead,
remove the spark plug and fit piston stop 502 54 15-
01 in its place. Take off the starter assembly, release
the leads from the cable guide and remove it.
Model 346XP, 351, 353:
Remove the cover from the hand grip.
2
If replacing the ignition module, disconnect its leads
and unscrew it. The ignition module can be left in
place if you are simply removing the flywheel.
3
Loosen the flywheel nut using a suitable socket and
unscrew it until it is flush with the end of the shaft.
4
Position puller 504 90 90-02 over the magnets and
counterweight on the flywheel. Tighten 2–3 turns
and tap the head of the puller with a metal mallet to
release the flywheel. Remove the puller, nut and
washer. Lift off the flywheel.
Cleaning and inspection
• Clean all parts, especially the tapers on the
flywheel and shaft.
• Check that the flywheel is not cracked or dam-
aged in any other way.
Repair instructions
23
English –

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340, 345, 346xp,350, 351, 353345346xp350351353

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