IGNITION SYSTEM

ELEC

+

1

2

R

W

1

Sb

L/W

 

Ω⋅1

2

+

AC MAGNETO INSPECTION

1.Inspect:

Pickup coil resistance

Out of specification Replace.

Tester (+) lead Red lead 1

Tester (–) lead White lead 2

 

 

 

 

 

Pickup coil

Tester selector

 

 

 

 

 

 

 

 

 

 

resistance

position

 

 

 

 

 

 

 

 

 

 

 

 

248 ~ 372 at

Ω ⋅ 100

 

 

 

 

 

20 °C (68 °F)

 

 

 

 

 

 

 

 

 

 

 

 

 

NEUTRAL SWITCH INSPECTION

1.Inspect:

• Neutral switch conduct

Tester (+) lead Sky blue lead 1 Tester (–) lead Ground 2

 

 

 

 

 

 

Sb

Ground

Tester selector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

2

position

 

 

 

 

 

 

 

 

 

NEUTRAL

 

 

 

 

Ω ⋅ 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

IN GEAR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No continuity while in neutral Replace. Continuity while in gear Replace.

EC628000

CDI UNIT INSPECTION

Check all electrical components. If no fault is found, replace the CDI unit. Then check the electrical components again.

6 - 7

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Image 302
Yamaha WR250FM AC Magneto Inspection, Resistance Position 248 ~ 372 Ω at 20 C 68 F, Neutral Switch Inspection