John Deere 6420 4.60 star(s) (5)

Information, reviews, photos, discussion topics, owner pages, and specifications about the John Deere 6420.
50-100 HP Tractors
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About the John Deere 6420



John Deere 6420 Discussions (27)

Here are the most recent 6420 topics from our community.
  1. M

    JD 6420 $13,000 higher than M105X

    I bought a M105X about a month ago I had heard they were about the same price as the JD.So I stopped by the local dealer last week and got a quote on tractor and loader and was blown away at the...
  2. P

    John Deere 6420 fuel problems

    I have a JD 6420 that started running rough replaced both fuel filters. Noticed that fuel does not come out bleeder on filter nearest the cab. Checked fuel pump and it appears to be working good...
  3. D

    john deere 6420 icv interlock switch,icv not functioning

    we have a 6420 and the loader will only operate when it wants too and i get the message icv interlock switch, icv not functioning and i believe it had a code but i did not write it down, so does...
  4. P

    Jd 6420 radiator bleeding

    M trying to locate the radiator bleed valve on the jd 6420 tractor. Can anyone help me out. Thanks
  5. D

    John Deere 6420 Cab Tractor

    I am looking at a used 2006 John Deere 6420 cab tractor. 850 hours with 640 self leveling loader. MFWD Still has plastic on the seat They are asking $62K It is 250 miles away, but I am...
  6. T

    JD6420 randomly shifts to neutral

    So, the 'patient' is a 6420 with about 5200 hours that has been commercially converted (Gilbert) to a two track snow trail groomer. Transmission is power quad (16 - w/ 4 power shifts). This...
  7. P

    John Deere 6420 powerqaud 24 speed

    Tractor has some issues when temperatures are vary hot out side 3-third gear disappears in all ranges after tractor has been running for a couple of hours. It returns after tractor cools down. Rad...
  8. P

    Jd 6420 transmission overheating

    12r syncroplus transmission over heats after 3 hours or so pulling 926 mower conditioner heat gun reading up to 230f. Changed fluids and filter. No cleaning screen visible at larger filter as...
  9. wildnwackywill10

    John Deere 6420 suspected electrical problem

    I have a John Deere 6420 and I am having some problems with it. The tractor runs fine most of the time but occasionally the tractor will decide to limit the maximum revs at exactly at 1400 rpm, I...
  10. M

    JD 6420

    No, I didn't sell my faithful little TC25D. I was outside last evening assembling my wife's new tow behind sprayer and heard the unmistakable sound of a tractor coming up the road. It was the...
  11. U

    help JD6420 4w/d IvT, won't drive in 2 wheel drive unless in differential lock

    Hi I am new to this I hope you can help. We have a 2004 John Deere 6420 4 wheel drive farm tractor equipped with IVT . Our problem is the tractor won't move in 2 wheel drive without engaging the...
  12. G

    John Deere 6420 Diagnostic Codes

    I'm getting codes 306060 and 306055 error messages. John Deere refuse to come out to my farm and look at the problem, but won't give me the meaning of these codes. As I'm a diesel fitter, I'd like...
  13. C

    Jd 6420 suspected electrical issues help!!

    Hello all. I am having a bit of an issue maybe someone can help. The farm which I work has a jd 6420. Now the tractor will not start unless the throttle is wide open, and upon starting the tractor...
  14. P

    Jd 6420 transmission overheating

    Jd 6420 tractor with 12r syncroplus transmission overheats after 3 hours of operating. Tractor has 1500 hours. Fresh hydraulic oil and filter change. The manual shows a clean out screen at larger...
  15. D

    Missing antenna on 2005 JD 6420 cab??

    Hi, I just bought a 2005 JD 6420 and it does not have a radio. I opened the space for the radio and all the wires are there in a harness adaptor. There is a seperate cable marked antenna but...
  16. D

    jd 6420 w/640 self level loader icv switch not working on loader joystick (2004)

    My electronic joystick is not working.icv switch is malfunctioning. I saw a post on here somewhere saying an omron d2jw-01k11 icv switch should fix problem in joystick. Has anyone changed this...
  17. W

    Replacing Radio Antenna on JD 6420

    I purchased a better grade radio antenna to replace the one that came on my JD 6420 tractor. The antenna is extremely difficult to get to....front right section above the cab liner. The...
  18. L

    jd 6420

    i have jd 6420 this morning when i started it the heater light and the i light started flashing after 1 minut.then the tractor cut out.we had a heavy frost -8c.i think the diesel could have frozen...
  19. U

    John Deere 6420 Auto Light is always on

    We have a John deere 6420 and the auto light, located near the PTO lights on the right of the cab, is always on. I cant find out what it means or why it came on. Our tractor still runs the same...
  20. P

    Jd 6420 syncroplus trans question

    I'm trying to find find the drain plug with the intake screen on my 6420 syncroplus 12-4transmission. The ops manual shows it on the right side. On page 115-3. No. 7. Does anyone know where it is...
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User Reviews (5)

Read what TractorByNet members think about the John Deere 6420 Subcompact Tractor
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80 %
4
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20 %
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3.00 star(s)
wildnwackywill10

6420 John Deere
John Deere 6420 Review
Model Year: 2004

Bought this tractor with 6500 hours on it, does not do a massive amount of work with me, approximately 300 hours per year but has given it's fair share of bother. The radiator has been replaced after having it repaired 3 times. Nearly all the fuel lines have had to be replaced (although arguably this my be to be expected at 6500 hours). The housing for the mechanism that holds the hitch up has 2 bolts which has a tendency to come loose. I found this out the hard way as one day the whole housing cracked costing 100 pound to have the whole thing replaced. The engine turns over a lot before it starts up, I have a feeling this is something to do with the fuel injection system somewhere.

Pros: Bags of power, pleasure to drive.
Cons: Has a tendency for small but expensive things to break.

5.00 star(s)
gregorydowney902011

6420 John Deere
2003 John Deere 6420 4x4
Model Year: 2003

This is a very nice 2003 John Deere 6420 4x4 farm tractor with cab. This tractor has 640 hours and is powered by a 104 horsepower diesel engine. This tractor has power quad transmission, power reverser, 2 doors, corner post exhaust, heat air radio, 3pt hitch with 540 shaft PTO, and 420/85 R38 R-1 rear tires.

Pros: 29,900.
Cons: 1.

Photo Uploads:

5.00 star(s)
Kevin Irvine

6420 John Deere
Owner
Model Year: 2008

Tractor has not been to the shop for anything. I change oil and fuel filter every 300 hours. We run 1460 disk mower and 556 JD baler. Pull 5 bottom plow and 14 ft. Disk. Hydralic are fast and have plenty of power. Spread 250 ton a lime with a 5 ton stolzus spreader. Does a great job!

Pros: Very dependable, and gets the work done fast.
Cons: Could do better on fuel.

5.00 star(s)
brotherbrent

6420 John Deere
Great Tractor
Model Year: 2005

I use this tractor every day. I ranch and farm about 785 acres. I feed with it, bale hay with it and clear brush with it. I've thought about buying another but I think first I'm going with a compact tractor a JD 3032E. I need a small one for the barn and cow lots. I also have a 1966 JD 3020. I use it for fence building, a backhoe attachment, post hole digger and anything else, it also is a great tractor. I have had one problem with the 6420. The shifter range buttons no longer work, I'm sure a small detail but finding time to send it in is a problem.

Pros: Everything.
Cons: Shifter problems.

5.00 star(s)
VaughnB

6420 John Deere
Great Tractor
Model Year: 2003

Have this MFD 6420 with 640 loader, cab with the shuttle shift. I also have a 5520 MFD w/cab at 516 hours Both are great tractors, they sit in the barn most of the time, but are always ready when needed.

Pros: Smooth operating with plenty of power.
Cons: Hydraulic valve will chatter at low idle occasionally.

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John Deere 6420 Owner Pages

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John Deere 6420 Community Rankings

#138 user rating of 1508 50-100 HP Tractors items
#35 Viewed of 1508 50-100 HP Tractors items
#61 discussed of 1508 50-100 HP Tractors items
#932 user rating of 19625 items overall
#347 Viewed of 19625 items overall
#480 discussed of 19625 items overall
#9 Ranking of Most-OwnerPages in 19625 items overall
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