lost blad speed

Discussion in 'Mechanic and Repair' started by SLASSEK, Sep 14, 2006.

  1. SLASSEK

    SLASSEK LawnSite Member
    Posts: 2

    I Have An Exmark Lazer Zxp 52" 23 Hp Kohler And I Have Lost Blade Speed. The Bearing All Seem To Be Fine, The Tensioner Seems Fine, I Replaced The Belt, But The Blade Speed Is Still Low - Any Suggestions
     
  2. Jim@MilkyWay

    Jim@MilkyWay LawnSite Senior Member
    Posts: 472

    First, welcome to Lawnsite.
    How much mechanical experience do you have?
    You know _for sure_ that the tensioner bearing, spring and other concerns are all good, right?
     
  3. SLASSEK

    SLASSEK LawnSite Member
    Posts: 2

    yes im mechanical tensoiner and bearings seem to be fine. blade speed is down new belt did not change.belt seems to be deflecting alot through hole left side of deck
     
  4. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Posts: 2,613

    Are your no load motor rpms at 3600? That would be the first thing to check.
     
  5. Jim@MilkyWay

    Jim@MilkyWay LawnSite Senior Member
    Posts: 472

    Good point Maniac.
    I just assumed he would have made that distinction, if engine speed were the issue.
    Say there Slassek, which is it?
    Also, when you say the belt is deflecting a lot, the way I interpret that, sounds like tensioner is not functioning correctly.
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    The lower the engine speed the more belt deflection you will have, I suggest checking RPM as maniac said, And you could go as high as 3750 without harming anything.
     
  7. khouse

    khouse LawnSite Bronze Member
    Posts: 1,465

    maybe your clutch is slipping?
     
  8. barnard

    barnard LawnSite Senior Member
    Posts: 618

    Thats my bet.
     
  9. lawnmaniac883

    lawnmaniac883 LawnSite Silver Member
    Posts: 2,613

    Well since he hasnt replied I guess it isnt that big of a problem........
     
  10. Jim@MilkyWay

    Jim@MilkyWay LawnSite Senior Member
    Posts: 472

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