John Deere 4045 / 6068 — Clean Electronic Injectors (In Engine)

Maintenance · Electronic injectors — in-engine cleaning

For the John Deere 4045 / 6068, from the John Deere service manual.

Applies to: John Deere 4045, John Deere 6068

Procedure

1. Change engine primary and secondary fuel filters.
2. Prime fuel system and start engine; run to normal operating temperature.
3. Disconnect fuel supply to primary fuel filter (A). Connect red hose using SW10015JD Fuel Injector Flush Kit adapter.
4. Disconnect fuel return-to-fuel tank (C). Connect black hose to tank line using kit adapter.
5. Fill reservoir tank with full contents of TY26688 Diesel Fuel System Clean-Up solution. Open valve (E).
6. Key-on engine to check for leaks and verify return fuel flowing.
7. Start engine and run at 1100 rpm for 20-40 minutes. Do not let engine run out of fuel. Shut-off engine.
8. Remove and inspect kit return filter element (SW10967P1) for debris; repeat steps 6-9 if badly contaminated.
9. Close valve on reservoir tank; disconnect kit hoses and adapters; reconnect fuel supply and return lines.
10. Start engine and check for fuel leaks; run 10-15 minutes to purge cleaner solution.

Full service-parts list: John Deere 4045 →, John Deere 6068 →

Source: John Deere 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.

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