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  1. #1
    Gold Member deathtoblackberries's Avatar
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    Mar 2013
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    421
    Location
    Battle Ground, WA
    Tractor
    Kubota BX2380

    Default Improving MMM quality of cut, blades how sharp?

    I'm disappointed in the quality of cut I'm getting with the kubota MMM. This is my 2nd deck, had a 60" on the B2920 and now a 54" on the BX2380. Looks ragged like a bad haircut I'm wondering if even brand new blades need to be sharpened or something? I purchased a JD X380 for mowing a couple years back, like night and day quality of cut vs the Kubota MMM. Had higher hopes for the new BX2380, turf tires, smaller machine, any tips on improving the quality of cut with the Kubota MMM? I have a 1 acre yard around my house its not a field.

  2. #2
    New Member
    Join Date
    Mar 2012
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    3
    Location
    Athens, PA
    Tractor
    Kubota 2360

    Default Re: Improving MMM quality of cut, blades how sharp?

    Quote Originally Posted by deathtoblackberries View Post
    I'm disappointed in the quality of cut I'm getting with the kubota MMM. This is my 2nd deck, had a 60" on the B2920 and now a 54" on the BX2380. Looks ragged like a bad haircut I'm wondering if even brand new blades need to be sharpened or something? I purchased a JD X380 for mowing a couple years back, like night and day quality of cut vs the Kubota MMM. Had higher hopes for the new BX2380, turf tires, smaller machine, any tips on improving the quality of cut with the Kubota MMM? I have a 1 acre yard around my house its not a field.
    If it's a new mower deck, I would suspect the blades are installed incorrectly. Make sure they are not backwards/upside down.

  3. #3
    Super Member timswi's Avatar
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    Nov 2008
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    5,733
    Location
    Beaver County Pa
    Tractor
    Kubota BX23 TLB, Kubota RTV1100, Kubota Z724 & Polaris Sportsman 570 Touring

    Default Re: Improving MMM quality of cut, blades how sharp?

    Quote Originally Posted by bota23 View Post
    If it's a new mower deck, I would suspect the blades are installed incorrectly. Make sure they are not backwards/upside down.
    Agreed. My 54" on by BX23 cuts very well without any enhancements. I do cut in low rage WOT. If the RPM's are too low and/or ground speed too fast, that could cause those results I would think.
    BX23TLB with 54" MMM
    RTV1100 with 72" Power Angle Plow
    Z724 ZTR
    Polaris Sportsman 570 Touring

  4. #4
    Super Member oosik's Avatar
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    Aug 2012
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    6,781
    Location
    AMBER, WA
    Tractor
    Kubota M6040

    Default Re: Improving MMM quality of cut, blades how sharp?

    I mow with a JD G100 belly mower. Its not a tractor - its a dedicated mower. I sharpen the three blades every spring, before mowing season. Of course, the quality of the cut deteriorates with the season but is still good enough. I sharpen the outer inch and a half of the blades about as sharp as a pocket knife.

    I don't have a 3-point brush hog. I use the JD G100 just like one. To say that I abuse this poor old mower is the understatement of the century. I have a one acre meadow that I mow two or three times a year and the 'ol JD is really smokin' when I finish. I run this unit thru the deer brush and cut it back from the edges of my lawn. I mow down monstrous stands of wild roses that are trying to overtake areas on my property. I also have 3/4 acre of lawn.

    What really surprises me - I purchased this unit new in 2004 - still running on the original three blades - never had a flat tire - never had to replace an belts yet - it starts, slick as a whiz every spring. I do DO all the required maintenance on the unit and grease things at least 3X during the summer.
    "isn't it weird that in AMERICA, our flag & our culture offend so many people - but our benefits do not"

  5. #5
    Gold Member Milo's Avatar
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    Aug 2006
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    374
    Location
    Preston County, WV
    Tractor
    Kubota B2650, JD X310, Polaris Ranger 500

    Default Re: Improving MMM quality of cut, blades how sharp?

    What rpm are you mowing? It probably calls for full throttle or 3,200 for a mower deck to achieve the right tip speed, I'd run it at least at 3,000 on your BX.

  6. #6
    Gold Member deathtoblackberries's Avatar
    Join Date
    Mar 2013
    Posts
    421
    Location
    Battle Ground, WA
    Tractor
    Kubota BX2380

    Default Re: Improving MMM quality of cut, blades how sharp?

    I think Milo is on the right track. I mowed WOT with the B2920 but the R4 filled tires and weight were flattening the grass and the mower deck wasn't lifting it back up. Mowed once with the new BX, not at WOT since its brand new. I'll pull the deck, sharpen the blades and try WOT next mow. Is anyone getting good results with the MMM though?

  7. #7
    Elite Member oldballs's Avatar
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    Dec 2009
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    3,041
    Location
    Kansas...USA
    Tractor
    Kubota B2620 , Case 448 , Kubota B2650

    Default Re: Improving MMM quality of cut, blades how sharp?

    Several years ago I mowed with a 60 inch deck on a BX2660. I mowed in low range in nearly WOT with good results. It worked for three season on the OE blade set which I probably sharpened once per season. ... had turf tires that were not filled.
    Kubota B2620 (2012) Case 448(1983) Kubota B2650 (2018)

  8. #8
    Super Member dodge man's Avatar
    Join Date
    Oct 2008
    Posts
    5,314
    Location
    West central Illinois
    Tractor
    Kubota BX2350

    Default Re: Improving MMM quality of cut, blades how sharp?

    Mine mows good but not great. I have a mulch kit on mine.

  9. #9
    Veteran Member the old grind's Avatar
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    Jul 2012
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    1,393
    Location
    Mid-Michigan
    Tractor
    NH T-1520 HST, JD 5210 2WD, Case DX26 HST, .Terramite T5C, . NH L785

    Default Re: Improving MMM quality of cut, blades how sharp?

    Don't think your blades have to be 'razor-sharp or else'! Too thin an edge can bend over and cut worse than a dull one. IMO, most folks travel a bit fast when mowing, and get skips for it. btw, another reason to cut 'taller' (4"!!!) is a better finished look, regardless of equipment .. (you knew that) .. t o g
    48" 'MIE' HD grapple, F-450/Terex T292 Man Lift, DR Pro Stump Grinder, EZ-GO Marathon
    Kioti Mechron 2200, Husqvarna MZ-6128, Dixon 4228, '89 FXSTS
    6"x21" & 8"x28" Vertical Mills, 11"x26" & 12"x36" Manual Lathes, Cinci #2 T&CG
    New Holland L-785 Skid Steer w/Caretree 31" spade

  10. #10
    Gold Member Mowbizz's Avatar
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    Apr 2008
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    430
    Location
    Lakes Region, NH
    Tractor
    '14 Kubota BX25D

    Default Re: Improving MMM quality of cut, blades how sharp?

    My BX25D mows just fine with the 60 MMM. Depending on slope I use both high and low range with 4WD in low. I sharpen the blades when I do the maintenance in the spring and they dont get sharpened again til the following spring. I run from 2800 to 3000 depending on height and wetness of the grass...sometimes near WOT in the deep wet stuff. 5+ acres of grass looks as good as I want it too.

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