Yamaha WR250FM Charging Voltage Inspection, Tester + lead → Red lead Tester lead → Black lead

CHARGING SYSTEM

ELEC

–+

EC624000

COUPLERS AND LEADS CONNECTION INSPECTION

1.Check:

•Couplers and leads connection Rust/dust/looseness/short-circuit →

Repair or replace.

Y W
R	1
B	2

CHARGING VOLTAGE INSPECTION

1.Start the engine.

2.Inspect:

•Charging voltage

Out of specification → If no failure is found in checking the source coil resis- tance, replace the rectifier/regulator.

Tester (+) lead → Red lead 1

Tester (–) lead → Black lead 2

Charging	Tester selector
voltage	position
14.1 ~ 14.9 V at	DCV-20
5,000 r/min

3.Inspect:

•Charging coil resistance

Out of specification → Replace.

Tester (+) lead → White lead 1

Tester (–) lead → Ground 2

Charging coil	Tester selector
resistance	position
0.288 ~ 0.432 Ω at	Ω ⋅ 1
20 °C (68 °F)

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