Checking The Ignition Spark Gap; Checking The Ignition Coils; Checking The Spark Plug Caps - Yamaha E60HWD Service Manual

ELEC

Checking the ignition spark gap

1. Disconnect the spark plug caps from the
spark plugs.
2. Connect a spark plug cap to the special
service tool.
Ignition tester: 90890-06754
3. Crank the engine and observe the spark
through the discharge window of the
spark gap tester. Check the ignition sys-
tem if the spark is weak.
w
9 Do not touch any of the connections of
the spark gap tester leads.
9 Do not let sparks leak out of the
removed spark plug caps.
9 Keep flammable gas or liquids away,
since this test can produce sparks.

Checking the ignition coils

1. Remove the spark plug cap from the
spark plug.
2. Disconnect the ignition coil connector.
3. Measure the ignition coil resistance.
Replace if out of specification.
8-9
Electrical systems
69D80050
69D80055
å
B
B/W
Ignition coil resistance:
å Primary coil:
Black and White
(B/W) — Black (B)
0.18 — 0.26 Ω at 20°C (68°F)
∫ Secondary coil:
Black and White (B/W) —
Spark plug wire
3.84 — 5.76 kΩ at 20°C (68°F)

Checking the spark plug caps

1. Check the spark plug caps for cracks or
damage. Replace if necessary.
2. Remove the spark plug cap 1 from the
spark plug wire 2.
3. Check the spark plug wire for damage or
cracks. Replace if necessary.
1
∫
69D80065
2
6B480070
69D5G11