Yamaha EF2000iS - Inverter Generator, Service Manual

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6-6
TRBL
THROTTLE CONTROL SYSTEM
THROTTLE CONTROL SYSTEM
ENGINE DOES NOT START, ENGINE STARTS BUT STALLS, ENGINE SPEED
DOES NOT INCREASE, OR ENGINE SPEED IS UNEVEN.
Check AC output.
GOOD NOT GOOD
Refer to “GENERATOR SYSTEM” in
CHAPTER 5.
Rotate the shaft of the throttle control motor to check
if it turns smoothly with slight resistance.
GOOD NOT GOOD
Replace the throttle control motor.
Replace the throttle control motor.
Replace the throttle control motor.
Measure the coil resistance between 3-1, 3-2, 3-4,
and 3-5 of the throttle control motor.
(Tester range:
Ω ×
100)
SPECIFICATION OUT OF SPECIFICATION
Coil resistance:
250
Ω
± 7 % at 25 °C (77 °F)
Check the connections of the wire harness connec-
tors and couplers, and the wires for an open circuit or
short circuit.
GOOD NOT GOOD Correct or replace.
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