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For Husqvarna Parts Call 606-678-9623 or 606-561-4983
5. Ignition system
www.mymowerparts.com
Checking the spark
Remove the spark plug and clean off any carbon
deposits. Check the electrode gap. It should be 0.5 mm.
If the electrodes are worn you should replace the spark
plug.
Trouble shooting
Set the stop switch to the stop position. Earth the spark
plug cable against the cylinder and pull sharply on the
starter handle. A spark should jump between the
electrodes.
If there is no spark
Repeat with a new spark plug or test with test plug no.
502 71 13-01.
•
If there is still no spark, disconnect the short circuit
lead from the stop switch. (See page 24.) Pull the
starter. If a spark appears now then the fault lies in
the stop switch. Replace the switch.
•
If there is still no spark check the spark plug cap,
cables and connections for poor contact (dirt), a
break in the circuit or damaged insulation.
•
Using a feeler gauge 502 51 34-02 check that the air
gap between the ignition module and the flywheel
magnets is 0.3 mm. Adjust if necessary. Loosen the
screws on the ignition module. Position the feeler
gauge and push the ignition module towards the
flywheel. Tighten the screws and check the air gap
once again. If there is still no spark then you must
replace the ignition system.
Removal
Disconnect the ignition cable from the spark plug.
Remove the baffle, the screws that hold the ignition
module and the lead from the stop switch.
Fit the piston plug in the spark plug hole. NOTE! Use the
full thread length.
Unscrew the flywheel nut anticlockwise and remove it
and the washer.
25
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