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Back a few weeks ago, there was considerable discussion about the screen<br>in the pressure line fitting connecting the rockshaft valve and SCV. That<br>said,visiting my dealer this weekend, noticed a new 4300 that has<br>just been received, apparently JD has addressed this problem with a new<br>line and filter screen. Unlike the old line that crossed over the top of<br>the rockshaft housing, the new line is routed around the back, under the<br>top link mount (Between the top link and PTO cover). Upon close inspection, directly under the top link, you will note an inline filter approximately three inches long. Looks like it is serviceable without the hassle of removing the seat and block out<br>panels. Maybe Deere doctor can shed some light on this for us?<br>

Rockshaft Control Valve Filter Screen
John Deere Tractors
Replies 1 Post by James Q. (Joe) Smith

Try Curtis, http://www.curtisintl.com/ or Firebird, http://www.firebirdfiberglass.com. I have a Curtis, nice canopie, easy to install. Expect to pay $390 to $425.

Canopies
Operating and Attachments
Replies 2 Post by James Q. (Joe) Smith

Dave, both or filler ports. I always used the one on the valve cover, as it was easier to get to, your choice. As for oil, just stay with a quality product, 15w-40. My preference is Mobile One 15W-50 but some may not agree. Bottom line just make sure it meets John Deere specs.

JD 770 Oil filler
John Deere Tractors
Replies 2 Post by James Q. (Joe) Smith

Scott, as a previous owner of a 770 and a current owner of a 790, I can�t say enough good about the tractosr. Let me address your questions one at a time.
Can it handle a 5ft bush hog(med duty)? With ease!
How much weight will I need to add to the front? Four to five weights are sufficient for almost any task.
Bar tread or industrial tires? I have all three types, R1s, Turf, and R4s. For all around use the R4s are a good compromise between best traction and turf. They do ride stiffer that either the R1s or Turf�s.
How hard would it be and do you recommend changing the exhaust to horizontal? No problem, check with your John Deere dealer and order a �side exhaust�. Looks like the existing exhaust cut off in the bend. Only a few dollars.
As for the other task, the 790 will handle them with no problem. I am sure you will enjoy the 790 am much as I do.

Need more info on JD 790
John Deere Tractors
Replies 17 Post by James Q. (Joe) Smith

Scott, I have used antifreeze for seven year without any problems. Just remember to add enough antifreeze to cover your geographical area. Follow Ken's recommendations, can't get any easier than that.

Filling rear tractor tires with antifreeze
Parts and Repair
Replies 57 Post by James Q. (Joe) Smith

As a owner of a 790, can't say enough good about the tractor. Would recommend the R4 tires. I have all three, R1 (Tractor), R3 (Turf), and the R4s. The R4s seem to be a good compromise between traction when using the box blade and mowing. They aren't as smooth riding as the turf's but beat changing back and forth. If mowing is the only thing you are planning, then go with the turf's. One item to consider, when buying tractor, you get a two year warranty with a new one. "Something you probably won't need with a 790"! Can't say any tractor makes mowing a pleasure, but I can mow in two hour what use to take six with my old rider. The 790 will handle a five or six foot finish mower with no problem.

Used 4200 or new 790 any advise is welcom
John Deere Tractors
Replies 14 Post by James Q. (Joe) Smith

Shane, I purchased five JD suitcase weights from my local JD dealer for 29.00 each (40lbs). That said, I had a 770 prior to purchasing my 790, on it I used a ft weight from a 4020. You will have to fabricate a bracket and attach it to the holes on the weight bracket. I used a 3/8 bar stock and drilled four holes, two to match the holes in the bracket and two to match the mounting slots on the weight. I then took a can of JD green spray paint and painted the assemble to match the new tractor. Looks nice, if done correctly, and doesn't detract from the looks of the tractor. Not as easy to install/remove as the suitcase weights but a lot cheaper. Should you elect to use this method, check with some of the local farmers or tractor sales. Farm auctions are also a good place to find them. By the way, a 4010/4020 weight, weighs 120lbs, you shouldn't need more than two

Suitcase Weights
John Deere Tractors
Replies 7 Post by James Q. (Joe) Smith

If you are not set on a belly-mower, suggest you look at a rear finish mower. I have a LandPride FD2560 that I pull with my 790, it dose an outstanding job. Their rear discharge is also a good unit.

Used 60 quot belly mower for JD 790
John Deere Tractors
Replies 4 Post by James Q. (Joe) Smith

Has anyone seen or have a picture of a 790 equiped with R-4 Tires. My dealer states they are now an option, however, no size or additional data available.<br>If anyone has any information please send me an e-mail. I would like to buy a complete set of tires and rims if only I could get a part number for the set.<br>If you have a picture, please e-meil to jqsmith@alltel.net.

R4 Tires for 790 John Deere
John Deere Tractors
Replies 3 Post by James Q. (Joe) Smith