Cummins/Onan — Changing Fuel Filter
Maintenance
From a Cummins/Onan service manual — check it applies to your exact model before use.
Applies to: Cummins/Onan MDKB, Kubota D1105 engine, Kubota V1305 engine, Kubota V1505 engine, Kubota V1903B engine, Kubota V2203B engine, Kubota V2803B engine
Before you start
- Disconnect the negative (-) cable at the battery to prevent the engine from starting.
Procedure
- Disconnect the negative battery cable and close any fuel supply and return valves.
- Spin off the old filter with a filter wrench and dispose of it properly.
- Clean the contact surface on the filter base, lubricate the new filter gasket and spin the new filter on hand tight.
- Prime the engine for at least 30 seconds to fill the new filter.
- Run the genset and check for leaks; tighten the filter by hand if necessary.
Tools required
- filter wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: Cummins/Onan MDKB →, Kubota D1105 engine →, Kubota V1305 engine →, Kubota V1903B engine →
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.