Cummins/Onan — Reversing the Blower Scroll
Maintenance
From a Cummins/Onan owner's manual covering: 1.5UF-232S, 10.0UF-150S, 12.0UF-3S, 12.0UF-4S, 15.0UB-150S, 15.0UF-3S/104, 2.0UF-125S, 2.0UF-232S/32, 2.0UG-1S/135, 2.5UF-1S, 2.SUD-IS, 2.SUD-IS/ID…. Check it applies to your exact model before use.
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Procedure
- Remove only the scroll with screen attached.
- Turn it end for end.
- Reinstall so the scroll is at the opposite end of the air outlet hole.
- Ensure the arrow on the scroll points in the direction of generator shaft rotation.
Source: Cummins/Onan owner's 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.