1. Husqvarna Motorcycles Made In Sweden - About 1988 and older

84 250xc jetting

Discussion in 'Vintage/Left Kickers' started by vintage mike, Apr 11, 2009.

  1. vintage mike Husqvarna
    B Class

    Location:
    south haven michigan
    has anybody got jetting specs for a 84 250xc,thanks
    vintage mike, Apr 11, 2009
    #1

  2. rajobigguy Administrator

    Location:
    So.Cal.
    If it has the 38mm Mikuni

    main-------440
    needle jet--r4
    idle jet-----45
    needle pos-#4
    air jet -----2.0
    throttle----2.0
    needle-----6dh20
    air screw--1.5 turns out from closed
    That should get you a real good starting point:cheers:
    rajobigguy, Apr 11, 2009
    #2

  3. vintage mike Husqvarna
    B Class

    Location:
    south haven michigan
    thanks
    vintage mike, Apr 11, 2009
    #3

  4. vintage mike Husqvarna
    B Class

    Location:
    south haven michigan
    i used your jetting specs as a starting point,i ended up with needle clip in middle position,400 main jet,and had to grind off .5 millimeter of the slide to make it pull out of corners stronger without blubbering from being too rich,did a plug check and its perfect chocalate brown,this bike rips now,smooth power from idle up.:D
    vintage mike, Apr 17, 2009
    #4

  5. flyarmy Husqvarna
    B Class

    Location:
    Oregon City, OR
    I think the 400 main will work better for me also. I am still a little rich from 1/4 to full throttle...blubbering and fuel on the plug. Here is what I have right now:
    needle 6DH2
    main 420
    slide 2.5
    pilot 40
    needle jet R-2

    I will try the 400 and the middle position. I hope it works as well.

    Mike
    flyarmy, Apr 17, 2009
    #5