HomeRepair guidesIdle Fuel Mixture Adjustment: These instructions

Cummins/Onan — Idle Fuel Mixture Adjustment: These instructions

For these Cummins/Onan models: BGM, NHM.

Applies to: Cummins Onan Nhm

Procedure

  1. 1. If the carburetor has been overhauled, gently
  2. 2. Start the genset and let it warm up for ten min-
  3. 3. Disconnect the load (check for zero amps).
  4. 4. Push the adjustment limiter cap on over the

Source: manual:965-0531B Onan BGM NHM Marquis series RV Genset Service manual (02-1991).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.