Yamaha F50A - Checking the Spark Plug Caps; Checking the Ignition Coil

62Y3A11
8-14
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Checking the spark plug caps
1. Remove the spark plug caps from the
high-tension cords by turning the caps
counterclockwise.
2. Measure the spark plug cap resistance.
Replace if out of specification.
Checking the ignition coil
1. Remove the spark plug caps from the
high-tension cords by turning the caps
counterclockwise.
2. Measure the ignition coil resistance.
Replace if out of specification.
Spark plug cap resistance: 3.75–6.25 k
Ω
Ignition coil resistance:
Primary coil:
Orange (O) – Black (B)
0.08–0.11
Ω
at 20 °C (68 °F)
Secondary coil:
High-tension cord – High-tension cord
3.5–4.7 k
Ω
at 20 °C (68 °F)
Ignition system and Ignition control system