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  1. #21
    Super Member
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    Apr 2004
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    5,362
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    East Coast of Lake Huron
    Tractor
    Deere, several

    Default Re: John Deere 820 Basic Maintenance Manual

    Quote Originally Posted by Spartacus1 View Post
    Anyone know where I can obtain a basic maintenance manual for my 820?
    You could try getting a manual from John Deere? 1-800-522-7448. Don't waste your time and money on an I&T booklet.

  2. #22
    Member veto56's Avatar
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    Mar 2012
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    30
    Location
    New Hope,ms
    Tractor
    john deere 720-1030-honda 4x4,ezgo

    Default Re: John Deere 820 Basic Maintenance Manual

    thanks for the reply it was great help'wondering what the chain was for.lol try to refurbish tractor,had to do major cleanup with fuel system,injectors,new filters,return lines etc.drain fuel tank and i have never seen black fuel before.lol and ways started right up with ether hit.but wont stay running no air in system(bubbles)return line flows good .But checking have fuel in injector pump but no fuel coming out to injectors.The manual states that turning the key on energizes the pump it comes from the silenod.their is a ground wire from the fuse box ti the pump but i dont see any other wire going to the injector pump.how does it get energized?the manual states it has a auto shut off.And i guess energizing pump opens the shut off valve.I want to think its not getting energized to open shut off valve this is my problem.can anyone help me on this im stumped !!!!

  3. #23
    Super Star Member
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    Feb 2008
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    11,350
    Location
    somewhere usa
    Tractor
    Deere 110tlb, 4520, x749, L130

    Default Re: John Deere 820 Basic Maintenance Manual

    Do you have a vom meter? You should verify that you have 12 volts to the lead going to the injector pump with the ignition switch in the on position. If you don't have a meter a continuity tester light would work for this too.

    Depending on the injector pump you have I think most of them have a short three inch wire that grounds the coil to the housing of the pump and a long lead that goes back to the instrment panel, this long lead should have 12v + on it.

  4. #24
    Member veto56's Avatar
    Join Date
    Mar 2012
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    30
    Location
    New Hope,ms
    Tractor
    john deere 720-1030-honda 4x4,ezgo

    Default Re: John Deere 820 Basic Maintenance Manual

    Thankyou for the come back the pump is a JDB there is one wire that goes to the neg- side of the fuse box.thats the only wire on the pump.the tractor was a mess when i pulled it out of a barn.I had to clean up all the wiring.the only other wire going to dash is the red wire from the coil and a black ground wire which is on top of the starter. is the wire from the pump on the left side of the motor should be a 12v wire? ty again ive cleaned this bad boy up and its starting to look good.Would like to get this going to bushhog with it.As the other tractors are gas.and they love it lolol.

  5. #25
    Gold Member duke7595's Avatar
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    Jan 2012
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    321
    Location
    S/W MO.
    Tractor
    820 ,1520,1020 (D) 1020 (G) 1050,4020 2240

    Default Re: John Deere 820 Basic Maintenance Manual

    Hello,
    I have a 820 John Deere myself. I do know they need voltage to them to open the fuel flow. They also used different makes of injector pumps.

    As soon as I am able to get to my tractor I will look and find the wire you spoke of. But I think if you just turn the key to the on position you should be able
    to hear it click on.

    In any event I will get back to you very shortly with some information.

  6. #26
    Gold Member duke7595's Avatar
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    Jan 2012
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    321
    Location
    S/W MO.
    Tractor
    820 ,1520,1020 (D) 1020 (G) 1050,4020 2240

    Default Re: John Deere 820 Basic Maintenance Manual

    Ok mine is a ROSSA MASTER injector pump. The supply Hot wire, runs from the
    pump to the key switch.

    On mine the wire is located on top toward the front of the injector pump.
    It is in plain sight ,can't miss it. They use a everyday type nut to hold
    the wire in place.

    I hope i have helped you, Good Luck

  7. #27
    Super Star Member
    Join Date
    Feb 2008
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    11,350
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    somewhere usa
    Tractor
    Deere 110tlb, 4520, x749, L130

    Default Re: John Deere 820 Basic Maintenance Manual

    Quote Originally Posted by veto56 View Post
    Thankyou for the come back the pump is a JDB there is one wire that goes to the neg- side of the fuse box.thats the only wire on the pump.the tractor was a mess when i pulled it out of a barn.I had to clean up all the wiring.the only other wire going to dash is the red wire from the coil and a black ground wire which is on top of the starter. is the wire from the pump on the left side of the motor should be a 12v wire? ty again ive cleaned this bad boy up and its starting to look good.Would like to get this going to bushhog with it.As the other tractors are gas.and they love it lolol.


    I suspect the long wire that you speak of that is going to the negative side of the fuse box is wrong. If your tractor is like the rest of the 820's it is negative ground, running a lead to the negative fuse buss doesn't accomplish anything. My BDF injector pump has the long lead routed to the ignition switch run position with a small fuse inline. What is your tractor serial number (doesn't have to be exact)? I ask because there are several injector pump versions and the Roosa Master was used early up to about 45000 and then later somewhere above 80,000. Are the injector lines to the cylinders in a radial pattern around the pump or are they all positioned on the end in a circle?

    Something else to remember is the magnet/slug can click but the valve can be stuck closed meaning the electric fuel shutoff needs to be freed up.

    My 820 is a late model built in the last year of production sn 101XXX L here is a picture of the injector pump, mine has started leaking on the top and is collecting dust and dirt making a mess. I spent some time researching options last night and found a good place to rebuild the pump for $220 labor and parts if you wind up needing this.

    In the picture notice that the outside solenoid ground terminal is connected to the housing with a short wire lead about four inches long. The inside lead is the one going back to the switch run terminal.

  8. #28
    Gold Member duke7595's Avatar
    Join Date
    Jan 2012
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    321
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    S/W MO.
    Tractor
    820 ,1520,1020 (D) 1020 (G) 1050,4020 2240

    Default Re: John Deere 820 Basic Maintenance Manual

    I just got off work. I will get you the serial number tomorrow and post in the afternoon, also the the pattern you mentioned.

  9. #29
    Member veto56's Avatar
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    Mar 2012
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    New Hope,ms
    Tractor
    john deere 720-1030-honda 4x4,ezgo

    Default Re: John Deere 820 Basic Maintenance Manual

    I put the wire on the top nut like you surggested took ohm meter ok great i have power going to the pump.i cracked the bolt on the return line i have fuel now coming out the return line i can still see air bubbles.So im going to bleed it to get all the air out.Question do i need to crack open the lines at the injectors to bleed to the injectors?ty for the reply.I know its probably sum thing silly.Cause it did run just that it had dirty fuel causing it to miss.
    Attached Thumbnails Attached Thumbnails John Deere 820 Basic Maintenance Manual-picture-008-jpg  
    Last edited by veto56; 04-20-2012 at 12:19 PM. Reason: pic

  10. #30
    Member veto56's Avatar
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    New Hope,ms
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    john deere 720-1030-honda 4x4,ezgo

    Default Re: John Deere 820 Basic Maintenance Manual

    the # is 097130L code#T4HDC which operation manual says a 1973 I will take some picks and send.I followed the wire back to fuse box and it is on the ground side of the box,which when i turn key it goes hot at the pump.Im dying to get this tractor going I think it will be a mule.
    Last edited by veto56; 04-20-2012 at 12:29 PM. Reason: pics

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