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

All 2st Mikuni TMX Carb Decoder

Discussion in '2 Stroke' started by MattR, Feb 19, 2012.

  1. MattR 2T Forum Clerk

    Location:
    Temperance, MI
    Husqvarna Motorcycle:
    WB165, SM610
    Other Motorcycles:
    Yamaha FZ1
    Reference Information for the Mikuni TMX Carburator

    Diagram of the circuit tuning parameters:

    [IMG]

    [IMG]

    Here is a decorder chart for the needle:

    Example of the Husky CR125 Needle (6DJ8-60):
    6 = Series 6 needle
    DJ = Double tapered: D / J
    1st taper = D (1 min = 1 deg)
    2nd taper = J (2 min 30 sec = 2.5 deg)
    -60 = Diameter is 2.60mm
    Note:
    -59 / -60 / -61 = 2.59mm (1 step richer) / 2.60mm (standard) / 2.61mm (1 step leaner)

    Further discussion on needle decoding found here

    [IMG]

    Needle Clip Position:

    [IMG]

    Temperature and Altitude Correction Chart (for Mikuni TMX carb; 2008 and earlier bikes). The newer Mikuni TMXX carb (2009+ bikes) may have different ratios for main jet / pilot jet.

    UPDATED 21Feb2012: I noticed this chart had incorrect main jets listed at -10C/14F. I put the corrected sizes in red. I found this out when comparing the 2008 manuals for 125 and 250 bikes.

    [IMG]

    Please post below if you have other useful information to add to this reference page.

    Thanks!
  2. Parh 474 Husqvarna
    AA Class

    Location:
    Newbury Park, CA
    Husqvarna Motorcycle:
    '73 Cr125, '06 Cr125/144
    Other Motorcycles:
    Ossa, Bultaco, Puch, Maico, AJS, Yam
    Is there a 6DJ8-61 available? I put a 144 top end on and need a needle leaner than the stock -60. The -60 is the leanest one I know of.
  3. utopia Husqvarna
    AA Class

    Location:
    Jackson, WY
    Husqvarna Motorcycle:
    WR250, WXC125
    What year and model is that temperature and altitude chart for? The one for my 09 250 is different (richer). Those settings are a little closer to what I arrived at for my elevation.
  4. MattR 2T Forum Clerk

    Location:
    Temperance, MI
    Husqvarna Motorcycle:
    WB165, SM610
    Other Motorcycles:
    Yamaha FZ1
    It was in my 2008 CR125 manual which uses the older TMX. The new TMXX carb uses different main and pilot jets from what I've seen others posted. Your comments agree.

    Can you post a pic of your table? It would be a good addition to this thread.
  5. MattR 2T Forum Clerk

    Location:
    Temperance, MI
    Husqvarna Motorcycle:
    WB165, SM610
    Other Motorcycles:
    Yamaha FZ1
    The Husky workshop manual for 2008 bikes listed the 6DJ8-61 as being available (part number = 8B0086920). You should be able to order through a Husky dealer.
  6. Parh 474 Husqvarna
    AA Class

    Location:
    Newbury Park, CA
    Husqvarna Motorcycle:
    '73 Cr125, '06 Cr125/144
    Other Motorcycles:
    Ossa, Bultaco, Puch, Maico, AJS, Yam
    Perfect! Thanks! The '06 Husky book didn't list one that lean.
  7. utopia Husqvarna
    AA Class

    Location:
    Jackson, WY
    Husqvarna Motorcycle:
    WR250, WXC125
    WR 250/300 Temperature and Altitude charts from 2009-2010 Workshop manual:
    (The settings I arrived at on my 09 250 were somewhat leaner for my conditions)

    Attached Files:

    Borntoride71 and MattR like this.