Posted 4/8/2022 16:11 (#9603766 - in reply to #9602997) Subject: RE: John Deere 8400 keeps losing fuel prime
sw corner ia.
in the cab, behind your right foot is a little door. there are two little black relays and one of them causes this. replace them and see if that fixes your problem. did for me and I had to dig through a bunch of deere paper to find this little thingy out.
John Deere 8400 keeps losing fuel prime
