st400 attex

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Thread: st400 attex

  1. #1

    st400 attex

    i just bought one needs some ork has a sachs sa-2-440 motor
    don`t know anything about them any pointers


    thanks Lyle

  2. #2
    Join Date
    Jun 2007
    Location
    Northern VA
    Posts
    2,766
    Congratulations, Lyle;

    The ST400 is a very nice machine: ABS body, T20 transmission, and #50 chains. The Sachs isn't stock, but if you want a two-stroke it's not a bad choice. If I remember right, the 440 was around 34 HP. There are a bunch of us on this site with very similar machines and we'll be glad to help if you need it.
    Stuck in the seventies- not in the swamp.

    (6) Attex, a Hustler, a Super Swamp Fox, (2) Tricarts, (3) Tri-sports, a Sno-co trike, 3 Dunecycles, and a Starcraft! ...so far

  3. #3
    Thanks i also got a sachs sa290 with it it runs after i messed with the points i`m thinking of puting in the 290
    any thoughts on that.

  4. #4
    Join Date
    Jun 2007
    Location
    Buffalo, NY
    Posts
    6,442
    Quote Originally Posted by bigdog62 View Post
    Thanks i also got a sachs sa290 with it it runs after i messed with the points i`m thinking of puting in the 290
    any thoughts on that.
    Ditch the Sachs engine. Find a JLO/Rockwell 400 or 440 or a Cuyuna 440 and you'll be much happier with it. Plus the resale value will be much higher.
    "Looks like you have a problem with your 4 wheeler........you're missin' two wheels there"

  5. #5
    i have to stay with sachs i`m on tight buget you know how that is

  6. #6
    Put new bearings on all axles and chains hooked electric motor to run to it runs smooth and quit trans works as should
    Any other things I need to look for

  7. #7
    Join Date
    Oct 2007
    Location
    statesville, north carolina
    Posts
    2,604
    St-400 is a pita machine to adjust the rear chains on. remove a couple of the bolts holding the engine/trans cradle to the frame... I usually only run 2 bolts per side. It doesn't make the bolts any easier to get to, but there are half as many. Both my racer and my tank trainer are set up this way and I have had no issues.
    A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.

  8. #8
    Pulled tub apart a lot easer to set from in place and mount the tank how would you put back together
    Rivets or staples

  9. #9
    Join Date
    Dec 2012
    Location
    Youngstown, Ohio
    Posts
    1,003
    Quote Originally Posted by bigdog62 View Post
    Pulled tub apart a lot easer to set from in place and mount the tank how would you put back together
    Rivets or staples
    I use self tapping machine screws and then cut them off so they don't stick out, that way if I ever want to take the top back off I can. Also, I bought an Attex last week and it has a Sachs SA280 and it runs really well. I took it out for a quick ride the other day and I was very happy with the way it ran. I had to mess with my ignition also and mine had a Bosch which is the same as the JLO so it isn't very hard to figure out.
    "Racing is life. Anything that happens before or after is just waiting."

  10. #10
    Thanks that's great idea was messing with 440-c I have got it running it runs good which one would hole up better
    290 or 440. Thanks

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