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Uneven mowing problem

Posted by jerry55744 (My Page) on
Wed, Apr 7, 10 at 23:26

I have an '03 Craftsman DYT4000 riding lawnmower with 42" mower deck. Mows unevenly, leaves lawn "striped". I leveled the mower deck per instructions in the manual and had a professional repairman adjust the deck as well. New blades were installed, also. Still mows unevenly, although better than it was. Also, deck has six height settings. I have to mow on the next to highest (5th) height setting. Anything lower cuts way too short, in fact lowest 3 settings will scalp right down to the turf. This can't be right. Any suggestions?

Follow-Up Postings:

RE: Uneven mowing problem

Uneven mowing is a bigger subject than most people are willing to even consider. Most people really just ignore it. In a few days the uneven cut is less noticeable due to additional growth. Like you, I noticed the problem. Over quite a few years I have worked on the problem. In your particular instance the problem may be in the mower design itself. Such is the case on most riding mowers. Your deck is leveled like you said and blades are new. Here's some additional things that you can check. Check all blade heights to the (Level) concrete drive at front, rear, right, and left. Another big factor is deck wheels. Any deck wheels should be adjusted 1/2 inch from touching the concrete when the deck is set to your mowing level. Most people do not do this. I even added front deck wheels on several mowers that did not come with them and it evened the cut a lot. Also be sure all four tires are inflated fully and are all the same. With leveled blades and four deck wheels adjusted 1/2 inch from the ground any deck should give a reasonably good level cut. Keep in mind that a lawn that isn't flat cannot be cut "level" with a mower that cuts in a flat "plane". Golf courses use expensive $50,000 reel mowers that cut almost perfectly and leave almost no uneven areas.

RE: Uneven mowing problem

Generally you are lucky to get close to 4" height of cut on these- usually closer to 3 1/2" . By striped, you are speaking of leaving a center strip? Is the deck kept clean?

RE: Uneven mowing problem

my blades are cutting different heights. leaves my yard striped I don't have a manual for it because I bought it used. How do you level it out?

RE: Uneven mowing problem

Can you tell if one of the blades is not cutting flat?

If the individual blades are cutting flat but at different heights then the mower should go back to the repair shop to be corrected. You paid for the service.

RE: Uneven mowing problem

sounds like you have a bent blade, take the blades off and stack them on top of each other, they should nest perfectly if they aren't bent. another thing it could be is the blades are wrong for the mower. they are the correct length, but the cutting edge is lower than the correct blade. if they are digging into the turf, I wonder if you have high lift blades and one is on upside down.

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