Cummins/Onan — Service Procedure

A Cummins/Onan service procedure — check it applies to your exact model before use.

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Procedure

1. Use a manometer which reads up to 14 inches
2. Shut off gas supply. Temporarily remove the 1/8-
3. Connect manometer to read gas supply line
4. Open gas supply line valve. Without delay, alter-
5. Ifthe manometer reading drops slightly each time
6. Close the gas supply line valve. Remove
7. With a clamp on each end, secure the hose
8. Operate the engine to assure quick starting
9. Place the vaporizer in a vise or other suitable
10. Attach a pressure gauge capable of reading over7
11. Back off the adjusting screw until only one ortwo
12. Tighten the lock nut on the pressure adjusting

Source: manual:927-0754 Onan CCK-CCKA-CCKB (Spec A-J) Engine Service Manual (03-1986)L.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.