Cummins/Onan — Bleed the fuel system
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
Before you start
- If cam lobe is on high side, turn engine one revolution before operating priming lever.
Procedure
- Open the air bleed screw on top of the secondary filter removal cap screw.
- Operate the hand priming lever on the transfer pump until no air bubbles flow.
- Tighten the bleed screw.
- Return priming lever to original position.
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.