Spark Plug Cap; Ignition Coil; Source Coil - Yamaha BR250F Service Manual

IGNITION SYSTEM
8E041
SPARK PLUG CAP
1. Remove:
• Spark plug cap
2. Connect:
• Pocket tester
(to spark plug cap)
3. Measure:
• Spark plug cap resistance
[::J 11
Spark plug cap resistance:
~
5 k11 at 20
0
e
(68°F)
Primary coil resistance:
0.411 ± 20% at 20 0
e
(68°F)
Secondary coil resistance:
7.1 kn
± 20% at 20
0
e
(68°F)
8E051
IGNITION COIL
1. Disconnect:
• Ignition coil lead (Orange)
• Spark plug lead
2. Connect:
• Pocket tester
(to ignition coil and spark plug lead)
3. Measure:
• Primary coil resistance
CD
• Secondary coil resistance
®
8E061
SOURCE COIL
1. Disconnect:
• C.D.I. magneto lead and coupler (Brown,
Black)
2. Connect:
• Pocket tester
(to C.D.1. magneto lead and coupler)
3. Measure:
• Source coil/pulser coil resistance
Out of specification-efleplace.
Source coil resistance:
CD
(Brown - Black)
275 o
± 20% at 20
0
e
(68°F)
Pulser coil resistance:
®
(White/Red - Black)
20 11 ± 20% at 20
0
e
(68°F)
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