Yamaha EF2000iS Service Manual page 210

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4. Spark plug cap
9 Remove the spark plug cap.
9 Connect the pocket tester (Ω × 1k) to the
spark plug.
Tester (+) lead → Spark plug side 1
Tester (–) lead → High tension cord side 2
2
1
Spark plug cap resistance:
3.75 – 6.25 kΩ at 20 °C (68 °F)
MEETS
SPECIFICATION
5. Ignition coil (CDI unit/ignition coil) resistance
9 Remove the ignition coil (CDI unit/ignition
coil).
1) Secondary coil resistance
9 Connect the pocket tester (Ω × 1k) to the
secondary terminal.
Tester (+) lead → High tension cord 1
Tester (–) lead → Black terminal 2
Secondary coil resistance:
3.25 kΩ ± 10 % at 20 °C (68 °F)
MEETS
SPECIFICATION
OUT OF
SPECIFICATION
OUT OF
SPECIFICATION
5-15
IGNITION SYSTEM
TIP
9 Do not pull out the plug cap from the high
tension cord.
9 Remove → Turn the plug cap counterclock-
wise.
9 Install → Turn the plug cap clockwise.
9 Inspect the high tension cord for cracks or
deterioration, when install the pug cap.
9 Cut 5 mm off the end of the high tension
cord, and then connect it to the plug cap.
Repair or replace the spark plug.
1
×
Ω
1k
Replace the CDI unit/ignition coil.
ELEC
2

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