Hey all. I have a 2006 John Deere 4120 with a hydrostatic transmission it has the electronic pedals for forward and reverse. It developed a problem after the battery went dead not sure if the...

JD 4120 ehydro after an hour or so forward and reverse won't work but PTO does and front end will raise and lower. I've checked front axle fluid and main hydraulic fluid level. Changed hydraulic...

Has anyone had any experience with their JD 4120 doing the crab walk on slippery ground? My 4120 will have the back end start quickly going to the side as if the back is trying to pass the front...

My 2004 JD 4120 pto stops working under a load. Just had the tractor broken in half and pto clutch completely replaced as well as the solenoid valve. None of this has fixed the problem. Any ideas...

Looking for a John Deere 4120 Tech/Service manual PDF. Thanks

I am looking to buy a 2014 or older JD. I have been looking at used 4000 series. What struck me as a bit odd is that it appears as though the 4120, 4320, 4520, and 4720 appear to be the same...

Having a problem getting suction screen off to clean.Can anyone give me advise about how to get the screen out.Have the bolts that hold the elbow,but won't come out.Looks like you need to take out...

I changed the hyd. oil and filter with not much problem. I was unable to get the "screen" out to clean it. Only 750 hours on tractor so I just left it alone.

A friend has a JD 4120 and he me asking me if he had a screen in the rear end for the hyd oil. I couldn't tell him if it did or not. Can someone please help us out? Thanks, Lee

The garden didn't do very well this year...after getting a soil analysis I decided to move it for next year. Brought it closer to the house as well. The new area will still need some organic...

Hey guys... can someone give me a total length of their 4120 and 3720 fully rigged up (w/FEL & backhoe)? I'll likely be making a run to pick up one or the other shortly... I need to get my trailer...

I have a 2005 John Deere 4120 ehydro 600 hours. When I use an implement (tiller or brush hog), the implant stops spinning under load. Once I lift the implement from the ground it starts spinning...

I would think it would be really easy to find the other cut end to reconnect, but no..... And, is the sender being disconnected the reason for the "67" error code on the display? [/URL][/img]

First off - farming will be a hobby... Purchased 83 acres - 17 acres of Hay, around 7 acres of pasture, rest is timber... Plan to raise a few head of cattle. Then sell the Hay to a farmer up...

Hey I'm new to the site I have an issue with my 2004 john deere ehydro 4120 my rear pto will not engage the light in the dash comes on but it just won't work it just stopped one day when I was...

I am new to this site and I hope someone can help me out. My JD 4120 was running fine until I came to start it on Monday. Would crank but not start. Clean some water out of the fuel filter and...

I borrowed a friend's disc and after 3 passes through my field I was concerned if I was damaging my 4120 hydro. I actually found out my tractor has 43 HP on the PTO so based on that I think the...

My JD 4120 Power Reverser has no hydraulic pressure. Changed the filter, the fluid(it was cloudy) and cleaned the two screens as described in the owners manual. I still have no hydraulics...

I had a left front tire bead bust and the wire got wound around the outer hub. Leaking oil badly from outer seal now... I have a blow up pic sent from parts dealer shows the outer shaft, seal...

jr 4120 starts, but dies when put in gear or when turning pto on

I am a newbie to posting threads, but have learned much from reading them; so thanks in advance to the many kind and experienced equipment guys/gals for sharing. I've been reading what I can to...

I have a JD 4120 with 415 hours on it. Because of the early snow storm, I needed to clean a driveway for a load of logs to be delivered. Went out to the barn, turned the key, and some lights came...

Long time reader first time poster. Having my first issues with a 2005 John Deere 4120 with 900 hours and looking for some inside. I believe these two issues are related. The first issue is...

My 4120 has the optional 7 pin trailer connector on the rear. I had no need to use it until now. It does not seem to be wired correctly. Right turn is correct, tail lights are correct. Left...

Anyone else ever have this happen with their 4X20 tractor with a PowerReverser Transmission? When I am in C range either 3rd or 4th and get over about 1500 rpm's I get a terrible grinding noise...

My JD 4120 won't start. Turn key on and all gauges/lights on instrument cluster click and flash, does not turn over, checked battery. Any ideas? Thanks, Grampaw

My John Deere 4120, is a 2010 with only 110 hours. The 4 wheel drive is getting hard to engage and disengage at times. It acts as if it is stuck or the lever needs greasing.

does anyone know if the revferse pedal on a jd 4120 with hydro tranny can become disconnected. mine has stopped working.

When I bought my 4120 early this year, I wanted to be able use my son in law's 48 backhoe on it. My dealer was not sure it would work, but I kept pushing him. He found the proper mounting...

I'm looking into buying either the 4120 or the 4044R to replace my Kubota B series, but haven't been able to actually see either one in person in my area. I am in the Atlanta,Ga area in case...

I am looking to get a snow pusher for a John Deere 4120. Trying to decide between 6 foot & 8 foot. I have never used one, so I need some help. These are pictures of the areas I plow most.

Found this on CL if anyone needs one, not sure what they go for new... John Deere Parts Catalog for 4120 CUT

What are the pros and cons of the 61" vs 73" bucket?

As anyone used the "build your own" lately in the John deere website? It is showing $3k more for the base price on a 4120 compared to a month ago. I can't believe that they would increase the...

Does anyone know why the cab option is not available on the 4120 like it is on the other 4000 series tractors? I'm not getting a cab, but was curious. The 4120 is the same frame size as the 4320 -...

I have a john deere 4120 tractor and it lost power yesterday while bushogging. It acts as if the pto is still engaged when you try to restart it, because it does absolutley nothing. not even a...

I am new to Tractorbynet and not sure how this works, but I have a question for anyone who may be able to help me out. I have a JD 4120 john deere and it died while bush hogging yesterday. no...

With Loader and HST Deere 31,400 Kubota 29k ish I'm leaning toward the Deere as the model has been out for a while and it doesn't have a DPF. Also like the lift capacity of the 400cx Loader...

New member here. Thought I'd share my new attachment. Mounted a Bobcat 709 backhoe on a 4120 JD using the subframe for a Woods backhoe and some custom fab work. Not quite the hoe as the JD 93 I...

I have a chance to buy a, one owner, 2007 JD 4120 with JD 400x loader, w/ 105 hours, for $24000. Used to plow small garden. Tractor is in excellent condition. However, I can purchase a brand...

Hello. Just wondering if anyone knows how to increase hydraulic Pressure on my JD 4120..... I have a 400 loader that's has trouble lifting wet compost without backing in and out of the piles. I...

Hello, I'm new to this site and was following a thread from 2011 about a John Deere 4320 with starting problems. The thread describes my problem exactly. The tractor will be running fine and when...

Just took my 4120 to shop for coolant leak. After reading some posts, this appears it might be a leaking timing cover gasket. Just wondering if anyone has had luck getting JD to cover the cost...

Hi Al, While I have an old 2940, because of a hip replacement and not able to sit in a low mower, I got a John Deere 4120 with a belly mower. I've used it and it mows really nice. I also used it...

I've lurked here for awhile, but I need to get serious about buying a tractor. I've only got 15 acres, but am hoping to convince the neighbor to eventually sell me 20 more. Main uses will be...

Well I finally got around to finishing the plumbing of our Wildkat 48" econo grapple that we got late last year. I didn't want to go to the expense or trouble of an elec/over hydro setup. But I...

I am having issues with my new grapple install. I'm not sure if it's my plumbing or a problem with the rear remote pressures. The grapple opens fine as far as speed. But it closes very slow and...

Can anyone comment on the reliability of the John Deere 4120? I've looked at orange, red, and green but appear to be zeroing in on the JD4120 with loader. I like the two pedal hydro better than...

After lots of help from this form, I solved my track width issue with the addition of 4" skid steer wheel spacers on each side from skidsteersolutions.com. I was able to retain some stability...

I have a 2007? JD 4120 that will not start. I'm fairly sure it is the thermistor but I am having trouble finding it. I removed the fuse box but it is not located on the back of the fuse box...

Hello John Deere folks. I recently have been looking at many used tractors. Originally I was going to buy new but I can't get to the monthly payment I am looking for with new so used it is. A...

Hello, I'm in a situation where I'm probably going to have to sell my 2009 John Deere 4120 eHydro. I would like to describe the tractor below the best I can and would really appreciate any help...

Hi everyone, Posted this in the attachments forum, but didn't get much help, so I'll try it again here... I have a 2011 JD 4120 that I purchased for my hobby horse farm and general materials...

Hi everyone, I have a 2011 JD 4120 that I purchased for my hobby horse farm and general materials handling associated with my marine service shop. I love the machine overall and after much...

I recently bought a JD 4120 for use on my hobby horse farm and with my marine service shop. For the most part, the tractor can stay where it is, but some projects have come up where I need to...

We have a set of 4120's, sounds like Deere is coming with 4xxxM tractors in the fall, these are paid for but need to run a Kuhn EL82-180 tiller to do about 30 ac. in late summer and don't want to...

I've been lurking for awhile, trying to figure out a few things before purchasing a tractor. The tractor will be used for clearing snow out my 1/2 mile driveway in the winter, some brush (grass...

Since I am moving and may need to leave a utility tractor with the farm in Tennessee I am looking at changing my tractor mix. My New Holland is going to Maine with me. The TN tractor needs to be...

I have a 4120 that I need a trailer for. I mostly haul from farm to farm (about 7 miles). But maybe once a year pull about 80 miles one way to the house. I'm wondering if a #7000 trailer will...

2009 ,4120 (172hrs)400cx loader moving brush and logs with pallet forks on level terrain.Horseshoed the leveling arm, does anybody have any idea why this would bend , far as i can tell no hyd...

I need some advice. I have been struggling with trying to decide between the John Deere 4120 and the Massey Ferguson 1643. I have looked at the spec sheets until I'm blind. I've test drove them...

Does anybody here run a MX6 on a 4120? I'm looking to get a new rotary mower and just can't deside on a 5 or 6.

Great forum. I've been reading for a couple of months..never posted. I have 102 acres. About 65 in field that I have hired out in past to be bush hogged. 30-35 hard wood forest and 4.5 acre lawn...

Thanks to all of your inputs from previous threads I decided today to buy a used 2005 4120 with a 400CX FEL. Only 200 hours on it been stored in a building for the last 3 years. It will arrive...

I have a 4120 hydro with 350 hours. Problem is the tractor just stops in its tracks. The RPM's stay the same. I have to let off the pedal completly before it will move again. This seems to happen...

I have a 4120 hydro with 350 hours. Problem is the tractor just stops in its tracks. The RPM's stay the same. I have to let off the pedal completly before it will move again. This seems to happen...

Hello, This forum as been very helpful and I would like to ask for opinions one more time in regards to pricing before I "pull the trigger" on this package. After much research and "squeezing"...

I need to change out the fuel sending unit in my 4120. Can anybody walk me through how to get at this bugger?

This is my first tractor and I have some challenging land to maintain with it. We have just bought the land and the undergrowth has already gotten ahead of us. Where the timber was cleared a few...

Hey guys, I am working on some food plots for deer on my property and need some advice. I was originally thinking of getting a disc to bust up the ground after I plow it, but now I'm thinking a...

I am new here. I tried to search, but must not have done it right. I want to do a little research so I dont look like a fool when a go to my local JD dealer. I have been bouning between the...

Well, I posted this on the JD forum several days ago and I stumped them so.... I recently acquired a 4120 w/FEL and have been getting acquainted with it (read playing). It was 2 yrs old with...

Hello all. I am brand new to this forum and would like some input. I am looking at a 2006 4120 Ehydro w/ 400x FEL w/hd bucket. It is a 2006 w/ 256 hours. I have been looking for several months...

Anyone know the approximate cost of a new factory replacement R4 type tire for a JD 4120 tractor?

I am asking this question for a friend who is not sure if the lift arms are working properly or not. When he tries to lower them down as far as they will go, they are still about 12-16 inches off...

Hey i bought a 2007 4120 with 240 hours, load match, speed match, motion match with ehydro and brand new 400x loader for $18500, was this a good buy?

Fist of all thanks to all that helped me out with questions on the 4X00, 4X10 and 4X20 series tractors. Final decision went to a used 4120. Feel good about the tractor - has 450 hours and still 10...

Price drop on JD 4120 with FEL, Power Reverse, Ag.tires, $22,000,0%for36m. I couldn't say no to that price. Also sold my JD 850 today for $5700. Thanks again for everyones Help.Lee

Alright Fellas,, steer my right here!! I'm looking at the Leinbach L7300 Post hole digger for my 2006 JD 4120. I have the 17-24 r4 tires on the rear. I've been told by one seller that the...

Any opinions on which one is a better tractor? I don't mind color bias, just want some input. I need to do several things: -Move round bales on FEL -Pull a 6' shredder 2-3 times per year -Box...

Quoted for 4120 and 440x loader with R4 idust. tires 22,500 + tax. I live in Mi. Thanks

Hey all, just about to pull the trigger on the new tractor and had a few questions about these two tractors, money being VERY close. Is there anything that is better, (more user friendly) on one...

I am looking at tractors with PTO HP around 35. I have narrowed my search to the JD 4120, NH TC40A, and the Kabota L3830. There are all very nice. I am curious as to why the JD is 500lbs heavier...

I have been researching this site for a while now and appreciate the knowledge shared here. That said I have some comparison questions or specific questions about the TC40A. First I drove one...

OK guys tell me the difference and why orange is better. i want a set up like this Hydro FEL 72" MMM have about 30 acres 18 of the 30 will be mowed and the rest is woods or barn yard or pond i...

I'd like to start a discussion about the pros and cons of these two tractors. A side by side comparison, if you will. Please stick to features, HP, torque, etc. I know that everyone is biased...

I have been looking for the best price on JD 4120 up to 4520 with the JD 400x loader. Any ideas?? Thanks

buyjd-ML-850133-ML- JD specific post

JD 4120 hydraulic add on\'s Hi guys, I am in the process of setting up a 4120 on the JD web site and am confused on their choice of hyd options. Can anyone explain what the following options are...

Anyone been on both of these machines and can compare. We have a 10-acre place where we will be tilling an arena, moving dirt, manure spreading, cutting alfalfa, maybe baling, backhoe, loader...

JD 4120 ordered: How\'d I do? After much reading on this forum, I've reached a deal with my local John Deere dealer in SW PA. I'm getting a 4120 tractor with e-hydro,loaded R-4's, front and...

I Have been researching a few different MFG's mainly Blue (NH) and Green (JD) . I have been reading about some of the Loader Mounting brackets on the JD 400 Loader being cast in China, and...

Hi, I just learned about E95 (95% Ethanol/5% Gas) as a potential replacement for diesel. Anyone know if a new 4120 can handle it? Scott

New to the group, have enjoyed reading others post. I have been looking at NH TC45s and JD 4120s but an opportunity has come up for me to get a DK55 with 10hrs on it from the dealer (with the...

Just minor stuff, but wondering if you've seen the same thing on other JD tractors. Our new 4120 with 50 hours has totally wasted steering linkage rubber boots (like tie rod end boots that hold...

Trying to decide between a JD 4120 HST and a Case IH DX 40 HST (same as NH TC40 I think). The 4120 has 3 more hp, but similarly equipped is about $3k more than the DX40. Both are good dealers -...

I have just bough a 4120 eHydro tractor/400X/MFWD. I truly like this machine especially since I moved up from a JD 850/MFWD and loader. My question is in regards to the smoking at start up and...

We are supposed to buy our JD 4120 on Monday. Should I consider the 3720? Last Chance! Here's the opportunity for the Yanmar lovers to speak out strongly... I'm still leaning 4120. Thanks to...

Ok, I've never been a tractor owner...but have been around a few in my days. My dad is a mechanic so I've learned from him and do most of my own auto repairs when possible. So that's my...

Well fellas, I just got back from the dealer with my father-in-law (man with the money). Forget the eHydro. They had a 12x12 w/Power Reverser in stock and R4 tires...so they settled on that unit...

We're going to buy a tractor in a few months. The New Holland TC40DA is definitely in the budget, but I really like the John Deere 4120 (eHydro). The John Deere advantage is that it has a 43HP...

I live in Maine and have a quote from my local JD dealer and it seems to compare pretty good with others around the area. Does this sound ok? 4120, Hydro, R-4, Folding Rops, 400x loader, 73" HD...

This is my first post to this forum. Been browsing for weeks and this is obviously THE place to be for tractor info. Thanks in advance to everyone for your help. I am a tractor wanna-be mainly...