leaf blow out issue

Discussion in 'Lawn Mowing Equipment' started by 09daxman, Oct 25, 2013.

  1. Ridin' Green

    Ridin' Green LawnSite Fanatic
    Male, from Michigan
    Posts: 13,286

    You need M136185 wavy mulcher for a 48" deck

    Go here, then click on spindle and blade, then scroll down the parts list to 18 where the various blades are shown. The part # above is the wavy mulcher to ask for. My mulchers have no problem getting everything from the left side of my 60" deck and out the chute across the lawn a long ways when discharging, so you shouldn't have any issue with that.


    http://jdpc.deere.com/jdpc/servlet/com.deere.u90490.partscatalog.view.servlets.HomePageServlet_Alt
     
  2. 09daxman

    09daxman LawnSite Member
    Posts: 61

    I went to my dealer today and asked if they had a set of wavy mulching blades for my mower, just to give them a test, they said they had a set so he went and got them and before I bought them I checked to make sure they where the same number that you gave me and sure enough they actually knew what I was talking about. So tomorrow I will get the new blades on and test them out on my yard, see if and how much they make a difference. I will report back.
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  3. Ridin' Green

    Ridin' Green LawnSite Fanatic
    Male, from Michigan
    Posts: 13,286

    I can tell you this-
    With my MOD closed to mulch with the high lifts that came on it, it would blow more leaves away from the deck than it would suck in under it. After I switched to the wavy mulchers, it now sucks them in from several inches outside the deck.

    The design of the blades creates airflow in two planes. One vertically from the lift sail and then again back downward from the inner wavy area, and the other horizontally also from the lift fin since it all can't go in the upward direction alone. That is why they work for mulching so much better, and should also help your situation as well.
     
  4. dave_14385

    dave_14385 LawnSite Senior Member
    Posts: 426

    It should be interesting to see if it makes a big difference, due to I have the same problem as well. Please do report back. Thank you.
     
  5. smallstripesnc

    smallstripesnc LawnSite Senior Member
    Posts: 710

    Same issue with leaves blowing out on a 36in gravely walk behind.

    Please post back the results.
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  6. Valk

    Valk LawnSite Silver Member
    Posts: 2,711

    With all this added turbulence under the deck, how do these blades affect your RPMs compared to your other blade choices?
     
  7. Ridin' Green

    Ridin' Green LawnSite Fanatic
    Male, from Michigan
    Posts: 13,286

    The RPM's are actually slightly higher on my tach. The blades are only 2.5" wide vs the 3" stock blades or G6's.


    There's not more turbulence. Just different. The sails don't move nearly as much air as high lifts, which is another reason for less blowout.
     
  8. greengiant9963

    greengiant9963 LawnSite Senior Member
    Posts: 761

    You have a double stack pulley on the discharge side of the mower that your belt from the bagger attaches to. What is the diameter of the top pulley? In a lot of cases they will give you a smaller pulley so the power doesn't drain. I put a larger pulley on mine and made a big difference.
     
  9. 09daxman

    09daxman LawnSite Member
    Posts: 61

    Sorry I didn't get back soon, but I got the new blades on and tried it out. It did help out a bit but I still have a decent amount of blow out. What I think is going on and I'm going to do a little bit of testing with this weekend if I have time is that the hopper is to much of a sealed unit and air can not escape fast enough. So the blower can only blow stuff in as fast as the air is coming out and if the air can't get out fast enough the power head can't keep up with the deck and it kind of creats an air damn, sense the air can't get sucked up by the power head, it go else where aka out the sides of the deck. So what I'm going to do this weekend is disconnect the tube from the hopper and go cut some grass and leaves. So the deck will still be set up as if I'm going to collect but instead of the leaves going in the hopper they are just going to get blown out the back. It will be messy but the leaves and air won't be trapped so I will see if I have the blow out issue, if that makes sense. But if I do still have the issue then I know my theory is wrong but if I don't then I need to figure out how to make the hopper breath more. I will take pictures and videos and report back.
    Posted via Mobile Device
     
  10. Ridin' Green

    Ridin' Green LawnSite Fanatic
    Male, from Michigan
    Posts: 13,286

    Usually the tube coming into the hopper has a curved end on it to direct the clippings etc to the far side bag first. If that is missing or altered, then the debris may very well be blocking the airflow at the exhaust screen in the hopper. Worth checking into for sure.

    Another thing- if you have the cloth bags, wash them thoroughly with a pressure washer, but don't get close enough to damage them, They are designed to allow the air to flow through them, but they can get clogged with dust/dirt and the airflow is cut down dramatically. When new, the bags come with instructions to wash them somewhat frequently.
     

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