Cummins/Onan — Bleed Fuel System (Initial Start)
Maintenance
From a Cummins/Onan service manual covering: 205D3A, 3DJA, 3DJA-1E2236, 3DJA-3E2236. Check it applies to your exact model before use.
Applies to: Cummins/Onan DJA engine
Procedure
- Loosen air bleed screw on secondary filter (early models) or remove fuel return line (late models).
- Operate priming lever on fuel transfer pump until bubbles cease to appear.
- Tighten bleed screw or connect fuel return line.
- Return priming lever to disengaged position (inward).
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.