Sym DD 50 Service Manual page 147

15. ELECTRICAL EQUIPMENT
Ignition Coil Inspection
Remove body cover.
Measure the primary coil resistance.
Resistance :0.19~0.23KΩ (A)→(B)
Measure the secondary coil resistance.
Resistance : 8.2~9.3KΩ (A)→(C)
(A)
(B)
Remove the high voltage coil cap, and measure
its negative (-) terminal for the secondary coil
resistance.
Resistance : 3.1~3.2KΩ (A)→(D)
(A)
(B)
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(C)
(D)
(C)
(D)
Ignition coil