Checking The Pickup Coil; Checking The Stator Coil - Yamaha XG250 Service Manual

2
1
c. Measure the secondary coil resistance.
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3. Check:
Ignition spark gap
●
Out of specification → Replace.
Minimum ignition spark gap
6 mm (0.24 in)
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a. Disconnect the spark plug cap from the spark
plug.
1. Ignition checker/opama pet-4000 spark
checker
2. Spark plug cap
b. Connect the ignition
pet-4000 spark checker "2" as shown.
Ignition checker
90890-06754
Opama pet-4000 spark checker
YM-34487
c. Set the main switch to "ON".
d. Measure the ignition spark gap "a".
e. Crank the engine by pushing the starter
switch and gradually increase the spark gap
until a misfire occurs.
1
2
a
checker/opama
ELECTRICAL COMPONENTS
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EAS28110

CHECKING THE PICKUP COIL

1. Disconnect:
Pickup coil coupler
●
(from the wire harness)
2. Check:
Pickup coil resistance
●
Out of specification → Replace.
Pickup coil resistance
248.0–372.0 Ω
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a. Connect the pocket tester (Ω × 100) to the
pickup coil terminal as shown.
Pocket tester
90890-03112
Analog pocket tester
YU-03112-C
Positive tester probe
●
Red "1"
Negative tester probe
●
White "2"
1
W/L W/R
(B)
W W
W
b. Measure the pickup coil resistance.
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EAS28150

CHECKING THE STATOR COIL

1. Disconnect:
Stator coil coupler
●
(from the wire harness)
2. Check:
Stator coil resistance
●
Out of specification → Replace the stator
coil.
7-44
2
R W
(B)
W W
W