Cummins/Onan — Draining Water/Sediment From Fuel Filter
Maintenance
From a Cummins/Onan operator's manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MDKUB, Cummins/Onan MDKWB, Kubota Z482B engine, Kubota D722B engine
Procedure
- Open drain valve and bleed plug on fuel filter assembly.
- Collect fuel in suitable container and dispose properly.
- Tighten drain valve.
- Bleed air from filter housing by performing Steps 8 through 10 in Replacing Filter Element.
Tools required
- suitable container Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Drain about 1/4 cup of fuel
Full service-parts list: Cummins/Onan MDKUB →, Cummins/Onan MDKWB →, Kubota Z482B engine →
Source: Cummins/Onan operator'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.