Generac — Using Voltage Selector Switch
Operation
From a Generac owner's manual covering: MDG150, MDG175, MDG250. Check it applies to your exact model before use.
Applies to: Generac MDG150, Generac MDG175, Generac MDG250, John Deere 6068HFG05 / 6068HFG06 engine
Before you start
- Never change the voltage selector switch while the engine is running or the controller is on.
Procedure
- Shut down the unit.
- Remove padlock from voltage selector switch lockout device.
- Move voltage selector switch to desired voltage.
- Replace and lock padlock on lockout device.
- Start the unit.
Tools required
- Padlock Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 3-position FridayParts $27.67 switch: Hi wye, Low wye, Zig zag
- 4-position FridayParts $17.00 switch: Hi wye, Low wye, Zig zag, Delta
- Fine voltage adjustment range: ±10%
Full service-parts list: Generac MDG150 →, Generac MDG175 →, Generac MDG250 →, John Deere 6068HFG05 / 6068HFG06 engine →
Source: Generac 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.