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  1. #1
    New Member
    Join Date
    Dec 2012
    Posts
    8
    Location
    Lebanon, Pa.
    Tractor
    Satoh S650G

    Default S650G Help

    Hello, anyone out there have a good part number for a replacement mechanical fuel pump for this tractor? Or a suitable low pressure electric fuel pump? Pretty sure the diaphragm in mine is shot, when the tank is full it will run right through the pump and out on the floor. Any ideas? Thanks, Truckman

  2. #2
    Veteran Member
    Join Date
    Sep 2002
    Posts
    1,451
    Location
    Mt. Ulla, NC
    Tractor
    Satoh S-470D, Mitubishi FD 1450D

    Default Re: S650G Help

    I found this on an older thread using search:

    New ones are no longer available. I have replacement parts to rebuild yours or rebuilt pumps to replace yours. Bill - satohparts.com - 1-800-609-5110

  3. #3
    New Member
    Join Date
    Dec 2012
    Posts
    8
    Location
    Lebanon, Pa.
    Tractor
    Satoh S650G

    Default Re: S650G Help

    Quote Originally Posted by oliver28472 View Post
    I found this on an older thread using search:

    New ones are no longer available. I have replacement parts to rebuild yours or rebuilt pumps to replace yours. Bill - satohparts.com - 1-800-609-5110
    Thanks for the info but I spoke to Bill and these are no longer available. We disassembled th mechanical pump and thoroughly cleaned it and after remounting it to the block cranked it over and we had fuel coming out the line where it attaches to the top of the carb. It reads pulses of about 3psi on an in-line fuel pressure gauge. Is that enough or should it be higher? Also can anyone tell me what kind of volume it should put out? We have been able to get it to idle on brake cleaner but haven't been able to get enough fuel through the carb. Any ideas? Thanks, Truckman
    Last edited by Truckman; 01-09-2013 at 09:39 AM.

  4. #4
    Veteran Member
    Join Date
    Sep 2002
    Posts
    1,451
    Location
    Mt. Ulla, NC
    Tractor
    Satoh S-470D, Mitubishi FD 1450D

    Default Re: S650G Help

    Did you ask Bill about the replacement parts to rebuild your pump?

  5. #5
    New Member
    Join Date
    Dec 2012
    Posts
    8
    Location
    Lebanon, Pa.
    Tractor
    Satoh S650G

    Default Re: S650G Help

    Quote Originally Posted by oliver28472 View Post
    Did you ask Bill about the replacement parts to rebuild your pump?
    He said there are no rebuild kits. The factory that made the diaphragm has closed. I will try and post some pics of the carb tomorrow.

  6. #6
    Veteran Member
    Join Date
    Apr 2000
    Posts
    1,584
    Location
    Dixon, Il

    Default Re: S650G Help

    There is a filter in the line where it attaches to the carb. I'd replace it with an inline filter since it is fairly expensize. I do have one NOS S650 fuel pump & a couple used ones. Also electric fuel pump kits.

  7. #7
    New Member
    Join Date
    Feb 2013
    Posts
    3
    Location
    Brooklyn, NY
    Tractor
    1980 Satoh Bison

    Default Re: S650G Help

    they very rarely need a fuel pump
    usually it's a clogged carburetor
    try rebuilding the carburetor FIRST
    click here = Satoh

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