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Subject: Carburetor question

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Doig    Posted 03-01-2017 at 06:11:47 [URL] [DELETE]        [Reply] [Email]  
  • Carburetor question
  • On my Tug 1963 621 I had a friend rebuild the carb, the main jet is or was missing the Venturi was in upside down and the main needle I'd bent. After messing around with it for a few hours we took it apart and found what was wrong with it. Another friend took and made a new main jet that seems to work. Originally there was a low twntion spring under the float, my friend took that out. Does that need to stay in to support the float? Now if we ran it out of gas and the floats go into a rest position then add gas to it it pours out the carb air intake. But if you run it and shut the motor off its fine. Any ideas?

    Gaspump    Posted 03-01-2017 at 08:58:19 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Carburetor question
  • Depending on the carb model # it may not have used a main jet. About that era many units omitted the main jet and the metering tube regulated fuel flow. The spring should stay

    Doug    Posted 03-01-2017 at 10:28:25 [URL] [DELETE]        [Reply] [Email]  
  • Re: Carburetor question
  • Marvel Schebler TSX 765 is the carb model.

    Gaspump    Posted 03-01-2017 at 11:28:10 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Carburetor question
  • The TSX-765 is listed as being original equipment on the 600 series Ford Tractor.

    Doug    Posted 03-01-2017 at 11:49:45 [URL] [DELETE]        [Reply] [Email]  
  • Re: Carburetor question
  • yes, its on a 1963 ford 621 (USAF Tug) i ordered a new kit that has all but a new float. we are going to put the spring back in and a new needle and hopefully the correct jet.

    Tim Daley(MI    Posted 03-01-2017 at 10:35:37 [URL] [DELETE]        [Reply] [No Email]  
  • Re: Carburetor question
  • Doug-
    I don't know if this will help, scroll down to the SUPPLEMENT list.......

    Tim Daley(MI)

    Doug    Posted 03-01-2017 at 10:43:23 [URL] [DELETE]        [Reply] [Email]  
  • Re: Carburetor question
  • I didn't see the TSX 765 listed anywhere on the that manual, i did however see one for ones used in 1953. That will work for my NAA, thank you.

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