Kohler 27 Command Pro Power??

Discussion in 'Mechanic and Repair' started by 1998tahoe, Aug 15, 2010.

  1. 1998tahoe

    1998tahoe LawnSite Member
    Posts: 233

    I have a 727 61" Grasshopper. THe engine is turning 3670 with blades running no load. As your are mowing the engine seems to not pull good when it needs to. I run High Lift blades. THe grass I was mowing is not very tall. You have to slow down or the engine bogs down. IS the 27hp a little small for the front mount setup?? I run a 227 GH basically same mower and it pulls and runs good. THe 227 does not turn anywhere close to the 3670 rpms. Its more in the 3400 range. What could be the problem with the Front Mount??????????*trucewhiteflag**trucewhiteflag**trucewhiteflag*
     
  2. Mowingman

    Mowingman LawnSite Platinum Member
    from Texas
    Posts: 4,663

    A shaft drive does suck more power than a belt drive. also, i was thinking that your machine should be running at 3750 no load. I might be wrong about that.
    With the shaft drive, you do need all the power the engine is designed to produce to run it properly.
    Check your specs in the book for the proper RPM, or check with your dealer. A little RPM can make a big difference.
     
  3. 1998tahoe

    1998tahoe LawnSite Member
    Posts: 233

    Is there any way to adjust the govenor to keep it up there at 3750. The 3750 you refer to is with blades running sitting still correct?
     
  4. Mowingman

    Mowingman LawnSite Platinum Member
    from Texas
    Posts: 4,663

    No, you adjust the speed at full throttle, with the blades off and the machine setting still. There is a threaded bolt with a lock nut that you turn, and lock into place to set the RPM's.
    The RPM's will naturally drop when the blades are engaged and you start mowing. The point here is, that you will get less RPM drop and thus a higher RPM while mowing, if the no load RPM's are set properly.
     
  5. 1998tahoe

    1998tahoe LawnSite Member
    Posts: 233

    Just went outside and up them a little more. At 3760 now it seems better. I mowed some of my taller grass and it did seem better.
     
  6. Mowingman

    Mowingman LawnSite Platinum Member
    from Texas
    Posts: 4,663

    Good to hear there is some improvement. Do not go any higher, as you can damage lifters at around 3800 and above.
     

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