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Blades engaged 3600rpm?

Discussion in 'Lawn Mowing' started by fobaum, Sep 5, 2011.

  1. fobaum

    fobaum LawnSite Senior Member
    Messages: 364

    Should a mower run at 3600 when blades are engaged. My 60'' GS runs @ 3640rpms without the blades engaged w/ blades engages it runs @ 3540?
  2. Lordtimothy

    Lordtimothy LawnSite Member
    Messages: 171

    That is normal don't worry about it. They should be set at the factory at 3600 RPM with no load. Many mowers are geared in such a way as at 3600 RPM you are at max blade tip speed (As per ANSI standards) there is also a safety margin in there somewhere.

    All mowers I have ever seen drops 75 to 100 rpms with the blades engaged. Just as long as you are not below 3 to 3.2k you are good.

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