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johnney

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Posts posted by johnney

  1. i have a 2011 ys 400 hisun , it has a electric fuel pump on it and i would like to put back to vaccum pump .all the parts are still on it ,  (pump vaccum) fuel pump , but i don't know how to hook the vaccum lines back up .  diagram would be great

  2. i have a 2011 hisun ys 400  idles high,once in awhile, runs horrible under load. iv'e put several differant carbs on it , cleaned the gas tank , took off the vaccum fuel pump and put  an 

    electric fuel pump.  no change HELP 

    this is a carburated engine, but was wondering is there any electrical components that meter the fuel flow,  like  mass air flow senser or something like that could be causing the fuel delivery

    problem.

    ps i have owned this rig since it was new , and haven't had a full  year of flawless riding.

     

    oh and bought it from menards and told me i was stuck with it.

  3. i have a 2011 ys 400 when I start it cold it revs real high and when it warms up it won't  idle,    ive'e  been through the carb twice and cleaned out the gas tank , still no change

    HELP............................................. JOHN IN MN.

  4. I got ahold of hisun out of texas, they told me it is because of the oil I've been using........ I was using regular sae 30 weight , they told be it has to be wet clutch oil or motor cycle or oils used in diesel engine .............. who would have thunk

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