Generac — Carburetor Adjustment
Adjustments
From a Generac service manual covering: NP45G, NP52G, NP55G, NP65G, NP66G, NP72G. Check it applies to your exact model before use.
Applies to: Generac NP66G, Generac V-Twin engine
Procedure
- To adjust idle mixture, turn the idle mixture screw clockwise until it just seats.
- Then, turn the screw counterclockwise 1-1/4 turns.
- There is no main jet adjustment. That jet is fixed and tested up to 8000 feet altitude.
Tools required
- screwdriver Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- 1-1/4 turns
Full service-parts list: Generac NP66G →
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.