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Bobcat ZTR Generac 33 hp RPM's dropping w/ blades engaged?

Discussion in 'Mechanic and Repair' started by HenryB, Oct 30, 2009.

  1. HenryB

    HenryB LawnSite Bronze Member
    Posts: 1,828

    Rpm's are at 3700 with no load, once I engage the blades they drop to 3300. Spindles spin easy and smooth clutch feels fine. Help.
     
  2. HenryB

    HenryB LawnSite Bronze Member
    Posts: 1,828

    Maybe a governor adjustment?
     
  3. HenryB

    HenryB LawnSite Bronze Member
    Posts: 1,828

    Maybe carburator? Help:confused:
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024


    Neither of the above, You will have a couple hundred in drop when load is applied so that's normal.

    You can adjust/raise the high speed RPM's (with someone in the seat) with the deck engaged to 3750, But best not run the engine wide open with the deck off.
     
  5. unkownfl

    unkownfl LawnSite Gold Member
    Posts: 3,838

    If you really want to turn the rpms with it engaged you will need a msd box or some type of rev limiter to limit how many rpms the engine turns with the blades disengaged.
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    But, Who needs to run a engine at wide open without any load applied to warrant it ?

    Dixie's come set at 3750, Haven't seen any problems......
     
  7. unkownfl

    unkownfl LawnSite Gold Member
    Posts: 3,838

    Not saying you need to just saying if the blades are disengaged with it wide open you would over rev. I don't think it necessary to mess with it at all just if the owner wanted this I would suggest doing it that way to not over rev.
     

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