Generac — Voltage Regulator Adjustment
Adjustments
From a Generac service manual covering: NP-50G, NP-50LP, NP-66G/LP, Q-40G, Q-55G/LP, Q-70G/LP. Check it applies to your exact model before use.
Applies to: Generac NP-50G, Generac NP-50LP, Generac Q-40G, Generac NP-50G/LP engine
Procedure
- Remove generator control panel cover and front panel.
- With frequency at 62 Hertz, AC voltage should read 124 volts.
- If voltage is incorrect, slowly turn VOLTAGE ADJUST POT on voltage regulator until AC voltage is correct.
Tools required
- screwdriver Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 124 volts at 62 Hz
Full service-parts list: Generac NP-50G →, Generac NP-50LP →, Generac Q-40G →
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.