Yamaha — G.F.C.I. Receptacle Test (YG2600)
Testing & diagnosis
From a Yamaha owner's manual covering: EF1600, EF2600, YG2600. Check it applies to your exact model before use.
Before you start
- Do not operate the generator with a faulty G.F.C.I. circuit; electric shock could occur.
Procedure
- Start the engine.
- Turn the AC switch (N.F.B.) to the "ON" position.
- Press the test button, then check the position of the reset button.
- If correct, push in the reset button; if incorrect, 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.