Yamaha EF3000iSE Service Manual page 116

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3. Charging voltage
• Start the engine.
• 3,800 r/min (no load)
• Measure the charging voltage.
Tester positive lead →
Tester negative lead →
Charging voltage:
12 ~ 16 V
4. Charging coil resistance
• Disconnect the charging coil connector.
• Connect the pocket tester (Ω × 1) to the
charging coil.
Tester positive lead → White terminal 1
Tester negative lead → Ground 2
Charging coil resistance:
White-Ground:
0.35 Ω ± 20% at 20 °C (68 °F)
*
C0NTINUITY
positive terminal 1
negative terminal 2
OUT OF
SPECIFICATION
GOOD
CHARGING SYSTEM
1
MEETS SPECIFICATION
Properly connect the charging system.
SWL4130J
OUT OF SPECIFICATION
Replace the charging coil.
4-18
– +
ELEC
2
1
2