Starting and Ignition WM 80 repair
42 wc_tx000521gb.fm
4.11 Replacing the Ignition Module
See Graphic: wc_gr002886
Removal:
The engine does not have to be removed from the machine to replace
the ignition module.
4.11.1 Disconnect the ignition wire from the spark plug.
4.11.2 Remove the seven M5 screws (a) which secure the flywheel housing
to the crankcase. Note: The screws may require heat to loosen.
Separate the flywheel housing from the crankcase.
4.11.3 When removing the M12 nut (b), it is recommended that an impact
wrench be used. An alternative is to insert a screwdriver (c) into one of
the two holes in the starter cup to prevent the flywheel from turning.
Then, use a 19 mm socket and turn the M12 nut counterclockwise to
remove it from the crankshaft. Also remove the washer under the M12
nut.
4.11.4 Thread flywheel puller P/N 46503 (d) completely onto the threaded
shaft of the flywheel. Turn the pusher screw portion of the puller until it
engages with the crankshaft. Continue turning the pusher screw until
the flywheel is free from the tapered shaft of the crankshaft. Note: The
flywheel may “pop” at the moment it is free from the crankshaft.
Remove the flywheel puller and remove the flywheel.
4.11.5 Remove the key from the crankshaft.
4.11.6 Remove the screws (e) which secure the ignition module (f) to the
crankcase.
4.11.7 Bend the retaining tab (g) to allow the ignition wire to be removed from
the housing.
4.11.8 Remove the sticker (h) which keeps the wires in the groove of the
flywheel housing.
4.11.9 Loosen the screw (i) which secures the ground wire to the stop switch
and remove the ground wire (j) from the stop switch. Then, pull the
ground wire through the wire harness.
4.11.10 Unscrew the ignition wire (k) from the ignition module and remove the
ignition module.
4.11.11 Pull the ignition wire from the crankcase.
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