IGNITION SYSTEM

ELEC

+

EC626002

IGNITION COIL INSPECTION

1.Remove the ignition coil cap.

2.Inspect:

Primary coil resistance

Out of specification Replace.

Tester (+) lead Orange lead 1

Tester (–) lead Black lead 2

 

 

 

 

 

Primary coil

Tester selector

 

 

 

 

 

 

 

 

 

 

resistance

position

 

 

 

 

 

 

 

 

 

 

 

 

0.08 ~ 0.10 at

Ω ⋅ 1

 

 

 

 

 

20 °C (68 °F)

 

 

 

 

 

 

 

 

 

 

 

 

 

3.Inspect:

Secondary coil resistance

Out of specification Replace.

Tester (+) lead Orange lead 1

Tester (–) lead Spark plug terminal 2

 

 

 

 

 

Secondary coil

Tester selector

 

 

 

 

 

 

 

 

 

 

resistance

position

 

 

 

 

 

 

 

 

 

 

 

 

4.6 ~ 6.8 kat

kΩ ⋅ 1

 

 

 

 

 

20 °C (68 °F)

 

 

 

 

 

 

 

 

 

 

 

 

 

4.Inspect:

Sealed portion of ignition coil a

Spark plug terminal pin b

Threaded portion of spark plug c Wear Replace.

6 - 6

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Yamaha WR250FM Ignition Coil Inspection, Resistance Position 08 ~ 0.10 Ω at 20 C 68 F, Resistance Position ~ 6.8 kΩ at