Cummins/Onan NH-MS/1 / NH-S/1 — Carburetor Removal and Disassembly

Repair & overhaul

For the Cummins/Onan NH-MS/1 / NH-S/1, from the Cummins/Onan service manual.

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Procedure

1. Remove the fuel line, air cleaner hose, governor linkage and choke wires.
2. Remove the two carburetor mounting nuts and remove the carburetor.
3. If equipped with an automatic choke, remove the two screws that fasten the choke and remove the assembly.
4. Remove the main jet assembly and bowl.
5. Remove the float pin and float.
6. Lift out the fuel inlet valve and unscrew the valve seat.
7. Remove the no load adjusting needle.
8. Remove the throttle and choke plate screws and plates, then pull out the shafts.

Source: Cummins/Onan 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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