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Cut Problem

Discussion in 'Lawn Mowing' started by mklawnman, Jun 16, 2003.

  1. mklawnman

    mklawnman LawnSite Senior Member
    Posts: 634

    IN the past few weeks I have been noticing something funny looking on some lawns that we cut. Especially when we use the Scag Fixed Deck WB. When you go back and forth with the mower each time mowing towards the left, it looks like theres a strip of gras that sticks up that looks like it hasnt been cut. NOw I know this the overlap stuff popin up but its getting really bad and it has happened on my Turf Tiger as well in some areas. My question is, is the deck out of balance from left to right or should I over lap more or less or what??? We've tried overlappin more and that hasnt seem to help, and when you go less of overlapping you obviously miss the uncut grass. My thought is the front tire is low and the blade is a bit dull, so I'm thinking of just checking the deck cutting height from left to right on the deck to make sure its level.
    HOpe this made some kind of sense, been along day of mowing so IM kinda outta it :eek:
  2. General Grounds

    General Grounds LawnSite Senior Member
    Posts: 902

    :blob3: make sure your deck pitch is correct, standing behind the machine the front of your deck should be a 1/4 " lower than the rear, also try a new set of blades. tony
  3. wacamaster

    wacamaster LawnSite Member
    from MI
    Posts: 198

    dull blades will do that. Also blades that are two short will do that. Sometimes 60" mowers require 20 1/4" blades.
  4. Mark

    Mark LawnSite Senior Member
    Posts: 723

    ;) Make sure your deck is cleaned each nite, and a new set of sharpened blades are put on..If this still happens level your deck, that should take care of your problem..Marks Mowing Service
  5. DLCS

    DLCS LawnSite Platinum Member
    Posts: 4,378

    Make sure the ends of the sharpened side of blade is not rounding off or nicked up.
  6. Jimbo

    Jimbo LawnSite Bronze Member
    Posts: 1,093

    Everything can be fine and you will still get that problem if the deck is too high. What height are you cutting at???

    If you are mowing heavy growth at 4" or higher it can cause this problem. I think its due to a mix or turbulance and lots of discharge, so much so that the discharge blade cannot handle doing both jobs (cutting, and discharging).

    I have experienced this problem from time to time and when I go cut the next prop at 3" it cuts like it was a pool table.

    Can you tell me the blades your using, cut height, and where the missed grass is (discharge, middle, or left side)?


    P.S. If any of this sounds accurate you might try changing the front baffle position (provided you have the advantage deck).
  7. grassdaddy

    grassdaddy LawnSite Senior Member
    Posts: 565

    Adding a gator mulcher on top of standard 'MARBAIN' scag blade made night and day diff. on mine.About 8.00 bucks a piece at lesco for hi-lift gators.:)
  8. mklawnman

    mklawnman LawnSite Senior Member
    Posts: 634

    The deck cut is 52", so each blade I believe is 17inches long or so. But we usually cut this property at 3.5inches and even at that cut with the hills and ruts it has it still at times cuts pretty close to the turf. This problem also occurs at times on the lawns we cut at 3inches too, especially in thicker lawns. The problem occurs on the left side of the deck. I know the blades are due for a sharpening here this week before we go mowing again on Friday but its only been about 1wk since I last sharpened them. They are standard Marbain Scag Blades, yeah I do have the Advantage deck but it doesnt have the "Turbo Baffle" in it but I plan on putting one in this week because the grass doesnt go that far on the WB compared to my Turf Tiger which has the Turbo Baffle in it.
    Ill look at sharpening them and also making sure everything is balanced correctly from left to right on the mower.
  9. heybruck34

    heybruck34 LawnSite Senior Member
    Posts: 300

    I am having the same problem now with my 48" Scag Fixed Deck. It used to cut GREAT. One nite after reading here I decided to see what I was REALLY cutting at and found it was 2.5". I raised the deck to the highest setting and now it cuts really rough.

    I only have one spacer on the bottom. Could this be part of my problem? If I add another I'm going to be below 3.5".

    Jimbo- sounds like you had a similar problem as me. What did you do to fix/mitigate it....???
  10. Phishook

    Phishook LawnSite Bronze Member
    Posts: 1,143

    Same problem on my 61" Chariot. There have been a lot of posts here lately about this happening.

    I tried everything. New blades, three new spindles, two new belts, new idler pulleys, clean deck, Checked air pressure, deck pitch just under 1/4". I even tried different blade combo's, singles, doubles, mulchers in every position possible. I'm only cutting off one weeks growth, nothing out of the ordinary. My other mowers are doing just fine.

    Two things left that I can think of. 1.) A bent deck. 2.) low RPM's. :angry:

    If any one find what is going on let me know.

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