Checking The Charging Voltage - Yamaha WR250F(D) Owner's Service Manual

CHECKING THE COUPLERS AND
LEADS CONNECTION
1. Check:
• Couplers and leads connection
Rust/dust/looseness/short-circuit
→ Repair or replace.
CHECKING THE CHARGING
VOLTAGE
1. Start the engine.
2. Inspect:
• Charging voltage
Out of specification → If no failure
is found in checking the source
coil resistance, replace the rectifi-
er/regulator.
Tester (+) lead → Red lead "1"
Tester (-) lead → Black lead "2"
Tester se-
Charging
lector posi-
voltage
14.0–15.0 V
at 5,000 r/
min
3. Inspect:
• Charging coil resistance
Out of specification → Replace.
Tester (+) lead → White lead "1"
Tester (-) lead → Ground "2"
Charging Tester se-
coil resis- lector posi-
tance
0.288–0.432
Ω at 20 °C
(68 °F)
tion
DCV-20
tion
Ω × 1
CHARGING SYSTEM
7-14