View Full Version : uneven cut on John Deere 757 60"

Little A's
08-09-2012, 08:14 PM
Greetings...new to this forum, so any help is appreciated. My middle blade is cutting about one blade width deeper (1/8-1/4" I assume) than the other blades. Everything seems to be tight and I can't remember hitting anything too hard...new blades also. Any suggestions before I tear into it? It makes a big difference when cutting Bermuda short. Thanks

greenstar lawn
08-09-2012, 08:16 PM
Is the blade on upside down
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Little A's
08-09-2012, 08:26 PM
No...although I wish it were that simple. I did get one on upside down a few weeks ago when my 7 year old "helped" me put the blades back on :).

08-09-2012, 09:11 PM
Have you checked the blades on the different spindles by lining them up tip to tip? Since you said you had new blades we can assume the center blade is not bent.

Little A's
08-09-2012, 09:52 PM
Yes, that is what I did this afternoon...thought I had a bent blade but put the new ones on and the same thing. Guess I will have to examine a little closer

capt bob
08-19-2012, 12:13 AM
Move that blade to another position and visa versa and eliminate one thing at a time
Did that blade have a washer on top or bottom and is that correct , You can take all the blades washers and clean everything and inspect but mark the low one when you put it
on the outside,

08-20-2012, 06:54 PM
im not familiar with John Deere but the only thing I would add on top of other's suggestion would be your spindles condition. Obviously if it made a sound it would be apparent that it were faulty. But it could be possible the spindle's nut has backed off and the spindle is sagging below the bearing housing. If the blade touch tip to tip though that wouldnt be the case.

Little A's
09-09-2012, 01:02 PM
thanks for the input guys...I switched spindles etc and it still cuts the same, new blades, all the same so I assume I must have bent the deck. Seems like I would have remembered hitting something that would have bent the deck!!

09-10-2012, 07:52 AM
Is something wrapped around the bottom of the spindle? Sting or twine? The blades sit over the center of the spindle up to the shoulder is that area clean?

Is the front of the deck to low? That would put the center blade cutting lower than the outside blades.

Good luck

09-10-2012, 08:24 AM
Pretty sure the chains would break before you bent the deck.

Check each blade tip height in 4 different positions. One of them is off.

Toro 455
09-11-2012, 10:40 AM
It sure sounds like the deck's bent. I've had that problem on a 72" Toro deck. I took out the spindle housing and pounded on it with a sledge hammer. That didn't work because there was too much spring in the deck. So I used a 7' gate post from a chain link fence which was schedule 40 and 3" in diameter. I pried the mounting area back in position best I could and shimmed the rest with washers. That was years ago and it still cuts fine today.

If yours is out less than 1/4" you cou probably get by with just shimming the spindle housing. Mine was so bad when I flipped the deck over you could see it was out of alignment.

To check alignment I laid a straightedge across the edges of the deck and measured down to the blades.

01-16-2013, 08:04 PM
get under the deck, jack it up put jack stands under it. Take a sharpie and mark where the blade is closest to the deck. then spin that same blade until it gets to the same spot. and then mark it and do that for all three blades until you see one that is different. Take that spindle off, clean it up and you will see a crack in the housing. I can take a pics of mine tomorrow so you can see.