Troubleshooting In The Ignition System - HUSABERG FE 450 Repair Manual

TROUBLESHOOTING IN THE IGNITION SYSTEM

Before checking the ignition, make sure:
– The emergency OFF switch is in the ON position
– The battery is charged
– The main fuse is OK
Check whether there is an ignition spark upon starting:
– Pull off the spark plug connector.
– Disconnect the spark plug connector from the ignition wire
– Hold the loose end of the ignition wire approx. 5 mm from the ground.
– A strong spark should be visible when the starter is actuated. If the battery is nearly run down, turn off the light
and use the kickstarter.
– If a spark is visible, mount the spark plug connector again.
– Unscrew the spark plug and insert in the spark plug connector.
– Hold the spark plug against the ground. A strong spark should be visible at the electrode when the starter is
actuated. If not, the spark plug connector or spark plug is defective.
If no spark is visible during the first test, check the following parts:
– Emergency OFF switch
– Cable tree parts belonging to the emergency OFF switch.
If the ignition is being supplied with voltage but no spark is visible, check:
– The ground connection from the CDI unit and ignition coil
– The cable from the CDI unit to the ignition coil
– The pulse generator
– The stator
– The ignition coil
– The short-circuit button
NOTE: the CDI unit cannot be tested with simple devices. It can only be tested on an ignition test
stand.
ELECTRIC SYSTEM
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