IGNITION SYSTEM
6
14
Trouble-shooting
First check the ignition system if the
engine will not start.
Check the ignition spark
Earth the spark plug to the cylinder.
Put the stop button in operating
position. Pull the starter handle as you
would at start-up.
Note that the plug can be examined
without removing the cylinder cover. Put
a combination wrench or similar between
the cylinder and spark plug.
Proceed to the next test if no spark
occurs.
Damaged short circuit cable
Remove the starter and loosen the short
circuit cable at the ignition module.
Reassemble the starter and check that
the spark plug gives a spark.
If the spark plug gives a spark, check
the short circuit cable and stop switch.
If the spark plug does not spark,
replace the ignition module.
502 71 13-01
1
4
5
2
3
Faulty spark plug
Replace the spark plug with the test spark
plug 502 71 13-01. If there is spark now
the spark plug is defective. Replace the
spark plug.
If there is no spark the next step is to
check the ignition lead.
Faulty ignition lead
1, 2. Pull up the rubber seal by the igni-
tion module and unscrew the ignition
lead from this.
3. Insert a pair of pointed pliers in spark
plug connection and pull out the spring
and cable end.
4. If the connection is defective, the igni-
tion lead can be shortened slightly. Make
a new hole in the cable with a awl and fit
the connection spring.
5. The adjoining simple connection can
be used to check that the ignition lead is
not broken. The battery is connected in
series with a test lamp.
Alternatively, a resistance measurement
can be made using a Ohm meter.
