Checking The Spark Plug Caps; Checking The Ignition Coil - Yamaha F40BMHD Manuel D'entretien

– +
ELEC
(Primary)
O
B/W
(Secondary)
B/W
IGNITION SYSTEM

CHECKING THE SPARK PLUG CAPS

1. Check:
• Spark plug cap
Loose connection → Tighten.
Cracks/damage → Replace.
Replacement steps
(1) To remove the spark plug cap turn it
counterclockwise.
(2) To install the spark plug cap turn it
clockwise until it is tight.
2. Measure:
• Spark plug cap resistance
Out of specification → Replace.
Spark plug cap resistance
4.0 - 6.0 kΩ Ω Ω Ω

CHECKING THE IGNITION COIL

Measure:
• Ignition coil resistance
Primary
Out of specification → Replace.
Secondary
Out of specification → Replace.
Ignition coil resistance
Primary
O-B/W
0.17 - 0.25 Ω Ω Ω Ω
8-13
E
Secondary
B/W
2.7 - 3.7 kΩ Ω Ω Ω