1. 2 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
    WR = 2st Enduro & CR = 2st Cross

250-500cc WR250 -07 powervalve setting problem

Discussion in '2 Stroke' started by TTperra, Jun 24, 2014.

  1. TTperra Husqvarna
    A Class

    Location:
    Sweden
    Husqvarna Motorcycle:
    WR250 2007
    Other Motorcycles:
    2xRZ350, Harley Chopper, CR480r -83
    I adjusted the powervalve today and run in to something stange?
    According to the manual, the markings on the gears to the secondary ex.ports should line up.
    But when I did this, they are not open when main valve is flush with top of ex.port, it have to open past the top for the secondary to open?

    is this normal or are my markings wrong?

    If it should be like this, its some kind of "2-stage" opening, first main exhaust open fully then secondary exhaust open.. (is it enough travel on governor for this?)

    I set the hight to 50mm and set the gears one cog "wrong", adjusted the open limit so the main valve is flush with top of main exhaust, now they all open at the same time, hope this is right..
  2. TTperra Husqvarna
    A Class

    Location:
    Sweden
    Husqvarna Motorcycle:
    WR250 2007
    Other Motorcycles:
    2xRZ350, Harley Chopper, CR480r -83
    Nobody knows?
  3. Phaeton Husqvarna
    AA Class

    Location:
    Bend, Oregon
    Husqvarna Motorcycle:
    2007 wr 250
    Other Motorcycles:
    2011 GASGAS EC 300 2007 KTM 200 XC
  4. TTperra Husqvarna
    A Class

    Location:
    Sweden
    Husqvarna Motorcycle:
    WR250 2007
    Other Motorcycles:
    2xRZ350, Harley Chopper, CR480r -83
    I am still little confused..
    when the sideports are open, the main valve is beyond fully open, when the markings are right..