Loud screetch when engaging blades.

Discussion in 'Lawn Mowing' started by bigbone, Jun 26, 2007.

  1. bigbone

    bigbone LawnSite Member
    Posts: 101

    I was wondering if it is normal for my belt to screetch when I engage the blades on my fastrack. I engage the blades at 1/2 RPM not full. Once the blades starting running it stops screetching. The mower is less than 1 year old BTW.
  2. stevo22

    stevo22 LawnSite Senior Member
    Posts: 344

    does the same thing on my super z and my gavely walk behind...when the pulley's are engaged the belts prob make the screech noise you are talking about...i have never thought twice about it...i have heard many other mowers make the same sound...i wouldnt worry about it..
  3. MeadowsLawnCare

    MeadowsLawnCare LawnSite Member
    Posts: 192

    Its just the belts, I wouldn't worry about it.
  4. Trident

    Trident LawnSite Member
    Posts: 1

    I've got a Lesco 60" Z Two that did the same thing... The belt came loose from the tensioner pulley. At first glance the belt looked like it was positioned correctly. There was no slack in the tension, but the belt was actually on the opposite side of the pulley as it belonged. I moved the belt, the screech completely stopped and performance improved(duh). The belt still hops off from time to time. Not sure why.
    I learned the hard way. I didn't think to much about the screech until I burned up a belt. Got bogged in tall grass and without enough belt tension, blades stopped and burned right through the belt. Nothing smells better than burning rubber!
    Check the belt alignment diagram.
  5. ed2150

    ed2150 LawnSite Member
    Posts: 174

    The belt may well be a little loose....the tension adjustment on Hustlers is quick and easy, check your owner's manual for instructions.
  6. The Captain

    The Captain LawnSite Senior Member
    Posts: 607

    Trident....I think you've found the problem in just your first post. The belts are binding and slipping causing the screeching. Alignment of the belts or a tension pulley problem are most likely the cause. In either case if the condition continues the belt will burn through and break.
  7. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Posts: 2,613

    Try engaging at full throttle next time.
  8. LawnBrother

    LawnBrother LawnSite Senior Member
    from SW Ohio
    Posts: 867

    My 44" Toro has pretty much always done it and has had the same deck belts for 5 years. I always engage at full throttle as well. NBD IMO.
  9. tallimeca

    tallimeca LawnSite Bronze Member
    Posts: 1,229

    screeching when engaging is characteristic.

    There are two kinds of belts. Raw edge, and finished edge.

    Raw edge belts will screech when engaged more so then a finished edge.

    That's why some guys it does it on, and some guys it does not.

    There is a method behind the madness on using one or the other for certain applications.
  10. KTO Enterprises

    KTO Enterprises LawnSite Bronze Member
    Posts: 1,286

    There was also a Loud Screech on celebrity fit club.

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