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  1. #1
    Silver Member
    Join Date
    May 2002
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    161
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    Baldwinsville, New York
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    B26 TLB, KX61-2 Excavator, BX2200, B3030HSDC, F3680, ZD326P

    Default Kubota Rear Discharge Mower

    I have a kubota F3680 front mount with a 60" rear discharge mower deck. I bought this deck because of safety reasons. I had a couple of close calls with a zero turn throwing objects. The problem is that the rear discharge cut quality is terrrible. The deck windrows and clumps the grass. I am not looking for a great cut, just some improvement. Does anyone know if the muching kit would help? Kubota has a mulch kit available for the rear discharge deck for a cost $300. I would appreciate any thoughts or experiences.

    Thanks,
    Jon

  2. #2
    Super Member JOHNTHOMAS's Avatar
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    Apr 2008
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    5,521
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    Somerset, Ky
    Tractor
    currently own F3080 F2680 B2620 FEL/BH RTV1140

    Default Re: Kubota Rear Discharge Mower

    I have a F2680 with the 6' RFM rear discharge and the cut is great and it lays the grass down level/spread out on the cut area. I've used it for 2 summers and have never even sharpened the blades. I don't have mulching blades or baffle. Sounds like something is wrong with yours. Is yours new? How long have you mowed with it and has it always done this?
    2012 B2620 FEL BH, 2008 F2680 2WD 72" side Discharge Deck, 2012 F3080 4WD 72" rear discharge deck, 2010/2009 RTV1140CPX , RatchetRake, Forks, ...DEARBORN 2 BOTTOM PLOW 12" ?? FOR SALE $425).... Drawbar and Horse Drawn disk 13 Toyota Tacoma Double Cab, 13 Ford Flex. 2009 Subaru Impreza Sport

  3. #3
    Gold Member
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    Oct 2009
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    311

    Default Re: Kubota Rear Discharge Mower

    I have the same mower and deck. There is no doubt that in really tall grass and especially with leaves in the fall, it does have a tendacny to wind row the clippings. If I don't let the grass get really tall, I have had no problems. I also mow the grass at 3 1/4" height during the summer. By mowing the grass taller and more often, I have never had an issue.

  4. #4
    art
    art is offline
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    Apr 2000
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    central New York
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    all makes and models

    Default Re: Kubota Rear Discharge Mower

    Rear discharge decks will cause windrowing between the blade ends when cutting to much.

    I found that this past year for most of the mowers that I had at home for a good job with the cool weather and the rain that the longest I could go was five days!!!!
    That was right into September with a mowing in October with it really needing a four day rotation depending on the mowers that I was using.

    Our local school also uses a kubota with a 72" and they too had to be on a five day to six day schedule at best and they had some windrows from all three of there mowers.

  5. #5
    Elite Member whistlepig's Avatar
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    Jan 2009
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    3,906
    Location
    Preble County, Ohio
    Tractor
    Kubota B7800 with FEL

    Default Re: Kubota Rear Discharge Mower

    I have to keep the deck relatively clean on my rear discharge. Not sparkly clean but if there is a couple of clumps the size of my fist in the wrong places it will cause it to start wind rowing. I also have rear safety chains that I clean after every mowing. Air has to be able to get underneath to the wind tunnel in these mowers or they won't evenly distribute the grass. I think this may also be the case when the grass is too tall. It won't allow the wind tunnel to work like it should.

  6. #6
    Silver Member
    Join Date
    May 2002
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    161
    Location
    Baldwinsville, New York
    Tractor
    B26 TLB, KX61-2 Excavator, BX2200, B3030HSDC, F3680, ZD326P

    Default Re: Kubota Rear Discharge Mower

    Thanks guys for all your comments. It was much appreciated. Have any of you guys tried gator blades on your rear discharge mowers? Also, what do you think about the mulch kit option? Would that stop the windrowing?

    Thanks,
    Jon.

  7. #7
    Gold Member
    Join Date
    Oct 2009
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    311

    Default Re: Kubota Rear Discharge Mower

    Quote Originally Posted by littlediesel View Post
    Thanks guys for all your comments. It was much appreciated. Have any of you guys tried gator blades on your rear discharge mowers? Also, what do you think about the mulch kit option? Would that stop the windrowing?

    Thanks,
    Jon.
    I've never tried Gator blades, nor have I tried the mulching kit on the the F3690, but it has been my experience with mulching kits, to get a decent looking mowing job, you need to mow more often than with non-mulching mowers.

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