Yamaha YXR660FAS Service Manual Page 364

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ELEC
IGNITION SYSTEM
6. Ignition coil resistance
Disconnect the ignition coil connector from
the wire harness.
Connect the pocket tester ( × 1) to the
ignition coil.
Tester (+) lead
Orange lead terminal
Tester () lead
Ignition coil base
Check that the primary coil has the speci-
fied resistance.
Primary coil resistance
0.18 ~ 0.28
at 20 °C (68 °F)
BOTH MEET
SPECIFICATION
Connect the pocket tester ( × 1k) to the
ignition coil.
Tester (+) lead
Orange lead terminal
Tester () lead
Spark plug lead
Check that the secondary coil has the
specified resistance.
Secondary coil resistance
6.32 ~ 9.48 k
at 20 °C (68 °F)
*
OUT OF SPECIFICATION
Replace the ignition coil.
5. Spark plug cap resistance
Remove the spark plug cap.
Connect the pocket tester ( × 1k) to the
spark plug cap.
*
MEETS
SPECIFICATION
Check that the spark plug cap has the
specified resistance.
Spark plug cap resistance
10 k
at 20 °C (68 °F)
OUT OF SPECIFICATION
Replace the spark plug cap.
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