John Deere 4045 / 6068 — Replacing Fuel Filter Elements
Maintenance · Fuel system
For the John Deere 4045 / 6068, from the John Deere owner's manual.
Applies to: John Deere 4045, John Deere 6068
Before you start
- Escaping fluid under pressure can penetrate the skin causing serious injury. Relieve pressure before disconnecting fuel lines.
Procedure
- Close fuel shut-off valve, if equipped.
- Thoroughly clean fuel filter assemblies and surrounding areas.
- Disconnect water sensor wiring, if equipped.
- Loosen drain plugs and drain fuel into a suitable container.
- Rotate retaining ring clockwise 1/4 turn and remove ring with filter element.
- Inspect filter mounting base for cleanliness; clean as required.
- Install new filter elements onto mounting bases; index and seat firmly.
- Remove filter element from water separator bowl; drain and clean bowl.
- Align keys on filter element with slots in filter base.
- Install retaining ring with dust seal in place; hand tighten until it snaps into detent.
- Reconnect water sensor wiring, if equipped.
- Open fuel shut-off valve and bleed the fuel system.
Full service-parts list: John Deere 4045 →, John Deere 6068 →
Source: John Deere 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.