Cummins/Onan — Observe the following procedure when removing

For these Cummins/Onan models: 5.0BF - 34 3E, S.OSF - 34 IE.

Applies to: Cummins Onan 5 0Bf 34 3E, Cummins Onan S Osf 34 Ie

Procedure

1. 1.
2. 2.
3. 3.
4. 4. Turn the crankshaft until the piston is at the
5. 5. Remove the piston rings from the piston with a

Source: manual:965-1003 Onan BF Welder Parts and Service Manual (9-1973).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.