John Deere 4045 / 6068 — Changing Engine Oil and Replacing Filter

Maintenance · Engine lubrication system

For the John Deere 4045 / 6068, from the John Deere owner's manual.

Applies to: John Deere 4045, John Deere 6068

Procedure

1. Run engine about 5 minutes to warm oil. Shut engine off.
2. Remove oil pan drain plug.
3. Drain crankcase oil while warm.
4. Turn filter element with a suitable filter wrench to remove; discard.
5. Apply clean engine oil to new filter inner and outer seals and threads.
6. Wipe both sealing surfaces of the header with a clean rag.
7. Install and hand tighten oil filter firmly against dust seal; do not add extra turn.
8. Tighten drain plug to specification.
9. Fill crankcase with correct engine oil through rocker arm cover or side filler.
10. Crank engine 30 seconds without allowing it to start to prime lubrication.
11. Start engine and run to check for leaks.
12. Stop engine and check oil level after 10 minutes.

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.

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