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

250-500cc WR 300 Jetting

Discussion in '2 Stroke' started by esweetland, Nov 8, 2016.

  1. esweetland Husqvarna
    AA Class

    Does anyone have any suggestions for re-jetting my WR 300 with stock Mikuni 38mm carb? I live in Indiana were the elevation averages 800' msl and ride mostly single track trails. I love the bike but it is a beast to start during the its initial start for the day. After that first start, I usually can start the bike with two kicks. I am assuming that I need a larger pilot jet or may a whole JD jetting kit.


    Thanks for the advice.

    Ed
    esweetland, Nov 8, 2016
    #1

  2. Dirtdame Administrator

    Location:
    Rock Springs Wy
    Husqvarna Motorcycle:
    11 WR300,13 WR125,18 FE501
    Other Motorcycles:
    17 Beta Xtrainer
    I used the JD Racing kit, but went to a smaller pilot jet and a larger main jet with it. I ride at 3500-5000 ft elevation most of the time.
    Dirtdame, Nov 8, 2016
    #2

  3. Zomby woof Husqvarna
    Pro Class

    Location:
    Ontario, Canada
    Husqvarna Motorcycle:
    2011 CR 150
    I would like to know what the stock jetting is, if anybody knows.

    I want to put a TMXX back on my (2011) 300, but it came off my 150, so it needs to be set up
    Zomby woof, Nov 8, 2016
    #3

  4. Dirtdame Administrator

    Location:
    Rock Springs Wy
    Husqvarna Motorcycle:
    11 WR300,13 WR125,18 FE501
    Other Motorcycles:
    17 Beta Xtrainer
    80 starter jet
    35 pilot jet
    #4 slide
    GAY needle (can't remember what clip position)
    R8 needle jet
    420 main jet
    Dirtdame, Nov 8, 2016
    #4
    Zomby woof likes this.

  5. Zomby woof Husqvarna
    Pro Class

    Location:
    Ontario, Canada
    Husqvarna Motorcycle:
    2011 CR 150
    Thank you DD
    Zomby woof, Nov 8, 2016
    #5

  6. Dirtdame Administrator

    Location:
    Rock Springs Wy
    Husqvarna Motorcycle:
    11 WR300,13 WR125,18 FE501
    Other Motorcycles:
    17 Beta Xtrainer
    I think that the pilot jet might have been larger in the beginning, like a 40 or 45, but most people found that the larger sizes were too rich.
    Dirtdame, Nov 8, 2016
    #6
    shawbagga likes this.

  7. shawbagga Husqvarna
    Pro Class

    Location:
    Eaton, Western Australia
    Husqvarna Motorcycle:
    None
    Other Motorcycles:
    2018 Gasgas XC250
    45
    shawbagga, Nov 8, 2016
    #7

  8. esweetland Husqvarna
    AA Class

    Thanks

    I will try a JD jet kit for the stock Mikuni
    esweetland, Nov 12, 2016
    #8

  9. Dirtdame Administrator

    Location:
    Rock Springs Wy
    Husqvarna Motorcycle:
    11 WR300,13 WR125,18 FE501
    Other Motorcycles:
    17 Beta Xtrainer
    I ended up using a bigger main jet with the JD kit. I went up to a 440.
    Dirtdame, Nov 12, 2016
    #9