Yamaha EF1000iS / EF6300iSDE — G.F.C.I. receptacle test
Testing & diagnosis
For the Yamaha EF1000iS / EF6300iSDE, from the Yamaha owner's manual.
Before you start
- Do not operate generator with a faulty G.F.C.I. circuit
Procedure
- Start the engine.
- Press the test button, check reset button position.
- If G.F.C.I. operates correctly, push in the reset button.
- If G.F.C.I. operates incorrectly, consult a Yamaha dealer.
Source: Yamaha owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.