John Deere — Replace Electronic Unit Injector O-Rings

Maintenance

From a John Deere service manual — check it applies to your exact model before use.

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Procedure

1. Replace the electronic unit injector's external O-rings whenever the injector is removed.
2. Fuel system diagnosis determines if unit injector is not functioning properly; refer to Groups 150 and 160.
3. Replaced unit injectors are returned to the manufacturer for testing and rebuilding.

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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