Service Manual

Ignition Coil
Spark Test: If the engine will not start conduct a
spark test as follows:
WARNING Gasoline and LPG vapors are ex-
tremely flammable and can cause severe Injury
or death if ignited. Make certain there are no
gasoline or LPG fumes present before conduct-
ing the spark test.
WARNING ignition voltage can cause severe
personal injury.
Do not touch Ignition compo-
nents while conducting the spark test.
1. Obtain a test plug or new plug of the same type
as specified for the engine. Disconnect the
spark plug cable from the engine spark plug,
connect it to the test plug and ground the side of
the test plug to bare metal on the engine block.
2. Crank the engine while looking at the spark
If the spark is strong, the ignition system is
good.
If the spark is weak, check for and readjust the
clearance between the coil and flywheel.
Also
check the condition of the spark plug cable. If
tion coil.
If there is no spark, bypass the kill switch
(throttle plate switch) and oil pressure switch (if
provided) with a jumper to bare metal on the
engine block.
If there is now spark, replace the
faulty switch.
If there is no spark, replace the
ignition coil.
plug.
the cable appears damaged, replace the igni-
Measuring Coll/Flywheel Clearance: Refer to
Figure
8-2. Measure the clearance between each
pole face of the coil and the magnet on the flywheel.
If the clearance is not as specified in Dimensions
and Clearances,
loosen the two coil mounting
screws and adjust to specifications.
Ignition Timing
Ignition timing is set at the factory and is not adjust-
able. The solid state ignition components are not
adjustable and require no routine maintenance.
If
.the engine’s timing is not close to that specified in
Dimensions and Clearances check the key be-
tween the flywheel and crankshaft.