blades not lifting grass well

Discussion in 'Lawn Mowing' started by cartec01, Jul 7, 2006.

  1. cartec01

    cartec01 LawnSite Member
    Posts: 21

    Hello,
    I have a new Ferris is1500. I absolutley love the machine. The problem that I have is this....

    When I am cutting grass, depending on how I feel and how long the grass is I cut between 2.5" to 3" high, usually taking off 1/2 -3/4 of an inch, each time I mow. When my front caster wheels role over the grass it naturaly pushes the grass down. My problem is that it seems my mower has a hard time lifting the grass back up to cut it, so it leaves longer grass where my caster wheels rolled over it. The result is strips of longer grass through-out the yard. This has happened since spring when the mower was new. I have cleaned out the bottom of the deck the best I could but it makes no difference. It did the same thing when I demo'd it, but the grass was wet at the time so I though that had something to do with it.
    Just for fun, I went into a mulch bed with the deck running, and it really did not do anything, unlike my X series Deere that relocate all the mulch to the yard. :)
    Any ideas on how to make this better? I was thinking about different blades but I wouldn't know what to get.
    Thanks for all your help and expertise.
    Dave
     
  2. Audrey

    Audrey LawnSite Senior Member
    from Pa.
    Posts: 570

    Hi lift blades will help. It will give you more vacumn under the deck. This stands the grass up for more efficient cutting.


    A
     
  3. ProStreetCamaro

    ProStreetCamaro LawnSite Platinum Member
    Posts: 4,121

    Sounds like you need to repitch the deck. It sounds like it has to much pitch which causes the vacume to escape the back of the deck. You might want to measure it and see where it is set. If its more than 1/4" higher in the back then it is pitched to much. You want 1/8" to 1/4" as a general rule of thumb. Perfectly level will give you the maximum amount of vacume but it can also cause some blow out in the front of the deck. also use high lift blades if it didnt already come with them.
     
  4. cartec01

    cartec01 LawnSite Member
    Posts: 21

    Wow, I had no idea there was a "pitch" factor. I'll check that right away. Also, high lift blades sounds like the ticket for me also, do you have any good places I could get them?
    Thank you so much for you super fast responses.
    Dave
     
  5. mcwlandscaping

    mcwlandscaping LawnSite Gold Member
    Posts: 3,164

    adjust the pitch right, and itll give you one heck of a stripe even without a stripe kit, at least on cool season grasses
     
  6. ProStreetCamaro

    ProStreetCamaro LawnSite Platinum Member
    Posts: 4,121


    It can be tricky to get the pitch set just right. The ground has to be completely level. Lower the deck to about 3.5" and turn one outside blade so the tip is in the very front and the very back. Measure the blade tip in the front from the tip to the ground and write it down. Then do the same for the back of the blade. Do this on both sides of the mower. 1/8th to 1/4" is where you want your pitch to be. This will also tell you if your height indicator is correct. If you set it on 3.5" then the tip of your blade when faceing forward should be 3.5" off the ground.

    Also your mower should have come with high lift blades brand new. Call and ask your dealer if it came with high lift blades. Every mower I have ever heard of comes stock with high lifts. Also what size is your mower? The smaller the deck the less pitch you want.
     
  7. Audrey

    Audrey LawnSite Senior Member
    from Pa.
    Posts: 570

    Both of my Tigers came from factory with regular blades.


    A
     
  8. cartec01

    cartec01 LawnSite Member
    Posts: 21

    Ok, I measured for the pitch on the deck on my garage floor. The blade is about 16" long. On the front of the blade at the cutting tip (with the blade positioned from front of mower to back of mower) with the deck all the way up I get 4-5/8". on the back side (toward the back of the mower) at the cutting tip I get 4-7/8". I moved the mower forward in the garage a couple of feet and re measured and got the same numbers. (my floor is pretty straight.) I only checked the discharge side because I wasn't smart enough to think to do the other side also. :)
    Also, speaking of stripping, this thing does not do much, but neither did my deere. As a matter of fact, even using my lawn sweeper doesn't stripe well, so maybe it is because of the grass I have in Northern IL. I have no idea what kind of grass it is, but I do plan on overseeding this fall with something good.
     
  9. cartec01

    cartec01 LawnSite Member
    Posts: 21

    oh, yeah, I'll ask the dealer about the blades because I would have no idea how to tell if they are high lift or not. It is a 48" Ferris is1500.
     
  10. ProStreetCamaro

    ProStreetCamaro LawnSite Platinum Member
    Posts: 4,121


    That figures because I have never seen a scag cut very good (and please dont take that the wrong way). Ours sucks but if you have 2 you obviously like them alot and thats all that matters!
     

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