Yamaha EF4500iSE Theory & Diagnostics Manual page 67

Resistance 250Ω Terminal: F3-1, 3-5, 3-2, 3-4
500Ω Terminal: 1-5, 2-4
Throttle valve position:
During assembly:
During engine starting:
Close
Open
2-33
Inverter Generator Diagnostics
the Model's Service Manual.