15-4
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IGNITION SYSTEM
IGNITION COIL AIR GAP/
CHECK/ADJUSTMENT
Remove the fan cover (page 5-3).
Insert a feeler gauge [1] of proper thickness between
the ignition coil [2] and flywheel [3].
• Avoid the magnet part of the flywheel when
adjusting.
• Adjust the air gap equally on both sides.
If measured clearance is out of specification, adjust the
air gap.
Loosen the two bolts [4].
Push the ignition coil firmly against the flywheel and
tighten the two bolts securely.
Remove the feeler gauge.
Install the fan cover (page 5-3).
SPARK TEST
Inspect the following before spark test.
• Faulty spark plug
• Loose spark plug cap
• Water in the spark plug cap (Leaking the ignition coil
secondary voltage)
• Loose ignition coil connector.
Disconnect the spark plug cap [1] from the spark plug
[2].
Connect a known-good spark plug [3] to the spark plug
cap and ground the spark plug to the cylinder head
cover bolt [4].
Crank the engine by pulling the recoil starter forcefully
and check whether sparks jump across the electrode.
IGNITION COIL AIR GAP:
0.30 – 0.50 mm (0.012 – 0.020 in)
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