Yamaha EF2800i - Inverter Generator, Service Manual

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4-11
– +
ELEC
CHARGING SYSTEM
CHARGING SYSTEM
TROUBLESHOOTING
NOTE:
• Choose a battery which meets the following specifications for testing.
Recommended battery capacity:
Minimum: 12 V, 40 Ah
Maximum: 12 V, 120 Ah
• Use the following special tool(s) for troubleshooting.
NO DC CURRENT
Pocket tester:
YU-03112, 90890-03112
Inductive tachometer:
YU-8036-A
Engine tachometer:
90890-03113
C0NTINUITY
1. Battery voltage
• Connect the pocket tester to the battery termi-
nals.
• Measure battery voltage.
Tester (+) lead
→
(+) terminal
Tester (–) lead
→
(–) terminal
Sub coil AC voltage:
11.8 V
• Measure the specific gravity.
Specific gravity:
1.280
OUT OF SPECIFICATION
• Clean the terminals.
• Recharge or replace the battery.
C0NTINUITY
2. Charging voltage
• Start the engine.
• Set the economy switch to “OFF”.
(3,550 r/min with no load at AC output current)
• Measure charging voltage.
Charging voltage:
14.5 V
SVU4200
*
MORE THAN
14.0 V
Properly connect the charging system.