clutch/brake burnishing

Discussion in 'Lawn Mowing' started by montiac30, Apr 7, 2008.

  1. montiac30

    montiac30 LawnSite Member
    Messages: 21

    My grasshopper owners manual says to burnish clutch if not used for more than three months.I am confused as to what this means.Can anyone enlighten me thanks?
  2. Richard Martin

    Richard Martin LawnSite Fanatic
    Messages: 14,699

    From Warner Electric:

    A burnish cycle is required to achieve full rated torque. With the power input rotating at normal speed and the pump set at minimum load, cycle the clutch on and off 50 times at the rate of 10cycles per minute, which is three seconds runtime and three seconds off time. A new clutch may emit a short squeal when initially engaged.

    The above is for a clutch attached to a pump but the same applies for clutches attached to blades. I know of no one that does this even on brand new mowers.

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