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Repair instructions
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.
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.
2