20 Most Recent John Deere Ar50041 Diesel Fuel Filter 3020 4030 4440 () Questions & Answers

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Leaving the fuel valve on the tank in the on position will allow fuel to run through the line & keep the air purged during removal. On the other side between the pump & the filter, having the new filter topped off & speedily installed will lessen the chance of air entering the line. Once the filter is installed, open the bleed screw at the top of the filter. Just my redneck way.

It just snaps on/off...make sure you fill with fuel before you replace it..thus you wont need to prime it as much

This Should be done at a dealer or by someone experianced.

There are several special instructions that have to be followed

as well as a special injector height tool required to set the injector.

On the left side of the injection pump is the fuel shutoff solenoid

Yes. The ignition switch uses two contacts for start/run. START position energizes the fuel shutoff relay which feeds back into itself to create a self latching state. The RUN position allows the self latch to continue until no longer in the RUN position (OFF), which interrupts the self latch thereby cutting off fuel. So you need to determine why the ignition switch RUN position doesn't maintain the fuel relay self latch state.

See following URL for wiring diagram https://www.tractorbynet.com/forums/threads/john-deere-5400.271168/

https://www.mylawnmowerforum.com/threads/john-deere-l-g-belt-routing-guide.2923/

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