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Scag stz hydraulic air problem

Discussion in 'Mechanic and Repair' started by mangojoe, Nov 11, 2007.

  1. mangojoe

    mangojoe LawnSite Member
    Posts: 14

    Does anyone know how to remove air that is in the system? My left pump is very sluggish and I think that could be air in the line. I don't know how to get it out. HELP!!
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,023

    Raise and block the rear of the unit up with tires off the ground, Start the engine then run it up about 3/4 throttle. Move the controls slowly full forward then full reverse, Do this 8 to 10 times. If air is the problem this should bleed it to the tank.
  3. mangojoe

    mangojoe LawnSite Member
    Posts: 14

    Thanks Rob, I will give it a try

    MOW PRO LAWN SERVICE LawnSite Bronze Member
    Posts: 1,566

    You have a dump valve,check it to see if it is loose.
  5. mangojoe

    mangojoe LawnSite Member
    Posts: 14

    thanks a lot

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