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Generac — Page 31

For these Generac models: 389/206/163cc, 410cc, GP1800, GP3250, GP5000, GP5500, GP6500, GP7000, GP8000.

Applies to: Generac Gp1800, Generac Gp3250, Generac Gp5000, Generac Gp5500, Generac Gp6500, Generac Gp7000, Generac Gp8000

Procedure

  1. Ensure all material is clear of the alternator before pro­
  2. Set START-STOP-RUN switch to START
  3. Refer to Figure 10 for location of adjustment screw.
  4. Adjusting screw clockwise will increase voltage, adjust­
  5. If no change in voltage while adjusting refer back to flow
  6. If voltage is correct, stop testing.

Source: manual:GP Series Service Manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.