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Kawasaki kx 250 power valves problem


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Hey everyone just took apart my 2000 kx250 bottom and top end for rebuild and started to take apart my powervalves.So i found that my main valve spring are not there at all and that shaft(gear) for upper timing don’t have dot at all and rod also don’t have that line up of those teeth..So can i run it without spring?It had a lot of power before and didn’t lack in power at any rpms and how i can do timing to main flap valve ?

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Mh shafts doesn’t have lines like on youtube video idk how but i did timing by myself so subexhaust ones are closed when main flapper is closed when is open they are fully open..I think that is that but i don’t have spring and on msp they say they don’t make them anymore and im in eastern europe so i can’t find spring anymore.Bike did run perfect and without that spring

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