Generac 91401256S / Bsc 556 — DYNA 8000 Calibration and Adjustments

Adjustments · electronic engine governor

For the Generac 91401256S / Bsc 556, from the Generac service manual.

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Procedure

1. With engine shutdown, set I adjustment one division from zero and GAIN at third division from zero.
2. Select isochronous or droop operation with DROOP potentiometer.
3. Set switch S1 OFF for diesel or ON for gas; set S2 OFF for 8000 actuator.
4. If remote speed potentiometer is used, set to mid-range.
5. Start engine and adjust SPEED potentiometer to desired speed.
6. If unstable, reduce I and GAIN settings.
7. At no-load, turn GAIN clockwise until actuator lever oscillates, then counterclockwise until stable; upset lever and check for 3-5 diminishing oscillations.
8. If performance satisfactory, omit Step 4; otherwise reduce GAIN one division and adjust I fully clockwise, then GAIN counterclockwise until stable.

Source: Generac service 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.

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