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Home›Repair guides›GASOLINE IDLE ADJUSTMENT GAS MAIN ADJUSTMENT

Compatible — GASOLINE IDLE ADJUSTMENT GAS MAIN ADJUSTMENT

For these models: J8-JC Series, JB, JB-E, JB-JC, jB-M, jB-R, jC.

Procedure

  1. Remove the air housing door and top panel, fuel line, governor linkage and electric choke wire. 17 PRIOR TO SPEC. R THIS DIMENSION SHOULD BE 11/64" BEND TAB TO ADJUST BEGIN SPEC. R SHOULD BE 3/16" FIGURE 16. FLOAT ADJUSTMENT
  2. Remove the two carburetor mounting nuts and pull off the carburetor.
  3. Remove the air cleaner adapter and choke from the carburetor.
  4. Remove the main fuel adjustment needle (begin Spec. R) and the float bowl nut and pull off the bowl. Re- move the float pin and float. S. Lift out the float valve and unscrew its seat.

Source: manual:967-0500_Onan_JB_JC_Genset_Engine__Magneciter_Gen-end_Service_Manual_11-1971_bestmanual.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.