Suddenly have poor cutting problem

Discussion in 'Lawn Mowing' started by goodgreen, Jul 13, 2013.

  1. goodgreen

    goodgreen LawnSite Senior Member
    Messages: 374

    OK, so the last two weeks I've had a terrible time with my mower leaving uneven cuts. Not sure what's wrong. Having to double cut a lot. Never had this problem. Have sharpened blades, cut in short overlapping strips, used a mulcher kit with mulcher blades....nothing seems to alleviate the problem. Even had 2 customer complaints recently. I've read where a lot of you double cut regularly, so perhaps I will need to start doing that. Only thing I can figure out is that I hit something last year and it bent the deck a bit. Maybe it threw off one of the spindles or something. I'ts a 3 year olf Big Dog 42" mower. Any ideas?
  2. chesterlawn

    chesterlawn LawnSite Senior Member
    Messages: 704

    Well you can tell if the deck or spindles are out of wack. Put on three straight blades and see how they line up side by side. Are all of your deck belts tight, no slippage?
  3. Sprinkler Buddy

    Sprinkler Buddy LawnSite Bronze Member
    from Florida
    Messages: 1,185

    Does your mower sound or feel different than it did in the past?
  4. trippy

    trippy LawnSite Member
    Messages: 18

    check your air pressure in your tires
  5. Tn2317

    Tn2317 LawnSite Member
    Messages: 89

    sounds like something's bent. Blade, Spindle or Deck. Jack up your mower and align your blades so the ends of the blades are "end to end". Is one higher than the other? If so, replace the blade that's higher, and if that fixes the problem, you had a bent blade. If it doesn't fix it, you have either a bent spindle or deck. If you have a big commercial, thick, welded, steel deck and you haven't hit something big enough to throw you over the handle bars, it may be your spindle. Good luck.
  6. KrayzKajun

    KrayzKajun LawnSite Fanatic
    Messages: 10,737

    #1 check air pressure in tires.
  7. Valk

    Valk LawnSite Silver Member
    Messages: 2,758

    All good suggestions. To best check your spindles, first remove blade belt...then align blades in a row. Wiggle blades to check for up/down play.
  8. Ridin' Green

    Ridin' Green LawnSite Fanatic
    Male, from Michigan
    Messages: 17,820

    Have you raised your deck up some from last year, or earlier this season, and if so, what height are you cutting at? Some decks don't do well above 3"-3.25". Also, mulch kits don't usually leave the smoothest or nicest finish.
  9. BigGreen1

    BigGreen1 LawnSite Senior Member
    from Ohio
    Messages: 297

    Is the deck clean? A dirty deck really messes up the airflow.

  10. integrityman

    integrityman LawnSite Bronze Member
    Messages: 1,713

    recently this problem too. I had one bent spindle. Further, the deck pitch was way out of whack.

    For the spindles, turn the blades and see if the tips line up. If the blades don't line up the blades or spindle could be bent. Best to put on brand new fresh blades.

    Follow the directions in the owners manual for leveling the deck.

    I about guarantee this this will fix your problem.

    Check tire pressure too.

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