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steveg66

JD 48' Deck Leveling

18 years ago

Well, I think I messed things up. I was trying to level the deck and think I messed it all up. I began having poor cutting and the deck seems to bind up while it moves from the terrain. Before I go messing with it again, I thought I'd ask here.

It's a JD GT275 with the 48" deck. This is a pre "C" deck.

How do you level your deck? Do you lower all the bolts and start from scratch? Do you check and make fine adjustments? Should I lower the draft arms and the front bracket and go from there.

Don't know what is the proper way to set the deck up.

Thanks for your help if you can help, and thanks for reading.

Steve

Comments (5)

  • 18 years ago

    park on a FLAT surface. it does not really matter if the surface is perfectly LEVEL, as long as it is flat. make sure all tires are properly inflated AND that the front tires are straight. check the level of all blades both front to back and left to right. adjust as needed, BUT keep in mind that if one side is way off you need to check the other side a few times as you adjust. as you lift one side, it has a tendency to lower the other, so if it is real far off you can really get out of whack!

    for more specific instructions, check your manual.

  • 18 years ago

    David,

    Thanks for the response. I have read the manual and the manual assumes it's just a minor adjustment. I guess my question is that as you adjust the front and the back, the angle the front bracket moves changes as well. In another words, as I tighten the "slack" off the front to lift it up, it changes the rear as well which I will then adjust to. The infinite amount of adjustment leaves a lot of variables.

    I doubt I make any sense through all of this though.

    It sounds good and logical in my head though.

    Steve

  • 18 years ago

    Is there a powerflo installed? Any idea what is causing the bind? I have seen where the rear arms come up too high and bind. Be sure your pins are seated all the way in as well. Had you adjusted the nuts on the front hanger? From there, the best advice I can give is to return the adjustments to as close as they were, start w/ a side to side level and then your pitch. Get your gage wheels up so they don't interfere w/ the adjustments and only set as high as the deck will freely move and not top out. JD sells a neat little gauge for leveling for cheap or a extra short mach. rule works ok. The blades should be straight across and measure from below the outer tips for the side to side adjustments and the blades straight back and forth for the pitch. Good advise from davidandkasie to follow as well.

  • 18 years ago

    Thanks for the response. No I don't have a powerflow and I do have the plastic gauge from John Deere.

    I'll play with it this weekend to see what I can come up with.

    Thanks again for the help,
    Steve

  • 18 years ago

    Here is an old carpenter's rule of thumb for making adjustments when changing the measurement in one place will change the measure in another place.

    The trick is to only adjust half of what you need.

    If you want to lower one end of the deck 1/2" but you know that the other side will raise when you do it: first measure how high both ends are so you will know the starting place. Then lower the high side 1/4" and then check how much the other end was raised by the adjustment. It just might be level.

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