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

125-200cc 09 125 WR/CR jetting thread

Discussion in '2 Stroke' started by Motosportz, Apr 25, 2009.

Page 1 of 4

  1. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    Thought i would start a thread so we had one place for the jetting.

    These are emission limited stock and need the stock jetting round filed as it will not even run this way. The kit comes like this...

    Main Jet (450)-460-(470)
    Jet Needle XP-5824-01 (third clip)
    Pilot Jet (40)-45-(50)
    Piston Valve 4.0
    Adjuster Screw 1+1/2
    Starter Air Jet 80 (screwed type)

    My 09 WR125 came with a different needle than listed and is a...

    6 DEY 15-47

    I did my first ride with...

    Main Jet 460
    Jet Needle 6 DEY 15-47 (third clip)
    Pilot Jet 40
    Piston Valve 4.0

    The main issue with this jetting on my bike is a mid range flat spot. If you raise the needle (richer) the mid gets better but gets blubbery off the bottom. With this needle the best possible solution would be to raise the needle and put a smaller pilot in.

    Ultimately having the right needle would be the solution. That said i call (CPW) Carb Parts Warehouse who sells parts and loves to sell PWK carb replacements. These guys seem kinda rude on the phone and he just flat told me this carb was crap and i needed a new PWK. No thanks, I'd rather buy a $4 needle. He told me they did not have needles for them and they were proprietary husky needles. Huh? these come in Polaris sleds, Yamaha's etc. He also said they would not use the older TMX needles event hough they use all the same jets.

    So with all this in mind i went out to the shop and dug up 5 TMX needles. here is what i found.

    - Older TMX needles are the same diameter where they mount to the slide. The length is the same as well but the clip grooves are one groove lower. So physically they will fit.

    Measuring them up I find that the major dia on all the older TMX carbs needles are smaller (richer) and the point is larger (leaner). Not sure if this is what I want. As the needle is smaller and richer is also is a leaner tapper. So as you open the throttle it does not get as rich as the 6DEY needle. I will try it and see.

    Here is the 6DEY (bottom) and the 6JD-8-59 from the older TMX carbs. Note the length and clip positions.

    [IMG]

    See how the lower needle that came in the kit gets much richer at full opening. (but starts leaner)

    [IMG]
    Motosportz, Apr 25, 2009
    #1

  2. Troy F Collins Husqvarna
    AA Class

    Location:
    alberta canada
    Husqvarna Motorcycle:
    wr125
    Other Motorcycles:
    GGEC 250 Honda RC51 CBR 1000rr CR125
    The older TMX had a single taper needle...if you look real close at your pic of the new needle....you can see three area's

    The three letters on the new TMX needle are triple taper and are different (in terms of shape)

    Letters DEY indicate triple taper needle. D=1degree taper, E=1degree15min, Y=6degree15min.


    here is an example

    Mikuni needle PN: 6dey26-66
    The -66 translates to the straight part of the needle being 2.66mm in diameter.

    Other options:
    6dey26-67 = 2.67mm dia.
    6dey27-66 is a 1/2 clip richer than a 6dey26-66

    I had to look high and low for this info......and wish someone would disclose more.....I know that the Jap 125s have many variations of these needles....as well as JD


    However...... the jetting on my WR seems pretty crisp.....40 pilot.. 470 main.. needle 2nd clip from top @ 3500 to 3800 ft

    What elevation are you at...???
    Troy F Collins, Apr 25, 2009
    #2

  3. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    250-1700 typically (45-70 temp) until mid summer when the higher elevation stuff opens up then 1500-4500 (60-85 temps).
    Motosportz, Apr 25, 2009
    #3

  4. krieg Husqvarna
    Pro Class

    Location:
    Matthews, NC
    Husqvarna Motorcycle:
    Many in the past
    Other Motorcycles:
    '12 Triumph Scrambler
    We ran our CR in race practice (race is tomorrow) with the following:

    Elevation 520 ft.
    Temp. 88 degrees.

    Pilot. 32.5
    Stock needle. Raised a clip (richer), clip on 4th notch.
    Main. 450

    We were literally the ONLY bike that didn't sound like a wheezing, 90-year-old man. We actually had several 4 stroke riders ask us what jetting we were using (yes 4 stroke riders???). I think most of the riders still had their jetting set rich for much lower temps.

    The CR ran like a scalded dog today! My son held his own against a few 250F's and most other 125 2t's. The ultimate compliment came when he held an '08 KTM 250 SXF at bay for most of the practice heat and then stopped and let the rider go by as he waited for a YZ 125 to get closer. After the heat, the KTM rider came over to our camp and drilled us for info on the Husky.
    krieg, Apr 25, 2009
    #4

  5. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    riding tomorrow and out the 35 pilot in with the needle one richer than stock. We will see.
    Motosportz, Apr 25, 2009
    #5

  6. Norman Foley Husqvarna
    Pro Class

    Location:
    Trumansburg, NY... The Beautiful, Finger Lakes
    Husqvarna Motorcycle:
    82 250WR 86 250WR 93 WXE350 03 TE610
    Other Motorcycles:
    '85 Fantic 300 '12 HUSABERG TE250
    Give us a report. I can't wait to get my bike back!:banghead:
    Norman Foley, Apr 25, 2009
    #6

  7. BlueHusky144 Husqvarna
    AA Class

    Location:
    Staunton, IL

    Your bike is being sacrificed for a good cause! I wish I had a 09 to test jetting. As soon as I get a tank is the day I buy a 09125!!
    BlueHusky144, Apr 25, 2009
    #7

  8. Norman Foley Husqvarna
    Pro Class

    Location:
    Trumansburg, NY... The Beautiful, Finger Lakes
    Husqvarna Motorcycle:
    82 250WR 86 250WR 93 WXE350 03 TE610
    Other Motorcycles:
    '85 Fantic 300 '12 HUSABERG TE250
    Jay told me he had two '09 125's sold, only if he had the big tank..... Yours must be one!:cheers:
    Norman Foley, Apr 25, 2009
    #8

  9. BlueHusky144 Husqvarna
    AA Class

    Location:
    Staunton, IL
    You are correct! He has already sold 2 WR 125's. I only ride CR 125's So far....
    BlueHusky144, Apr 25, 2009
    #9

  10. HuskyDude Moderator

    Location:
    BC, Canada
    Husqvarna Motorcycle:
    13/TR650
    Other Motorcycles:
    10/EC300, 76/TY175
    I know my eyes are not very good but I swear my needles were stamped BFY not DEY
    The one that came with the bike was a 6BFY43-74
    and the one that was in the CR Carb mod box was a 6BFY15-74.

    Are my eyes that bad....:eek:

    I gotta go look with a magnifying glass.
    HuskyDude, Apr 25, 2009
    #10

  11. Norman Foley Husqvarna
    Pro Class

    Location:
    Trumansburg, NY... The Beautiful, Finger Lakes
    Husqvarna Motorcycle:
    82 250WR 86 250WR 93 WXE350 03 TE610
    Other Motorcycles:
    '85 Fantic 300 '12 HUSABERG TE250
    I just looked at the stock lean needle I removed and it's a 6BFY43-74. I used my cheaters and a magnifying glass!:busted:
    Norman Foley, Apr 26, 2009
    #11

  12. raisrx251 Husqvarna
    AA Class

    Location:
    Virginia
    Don't they stamp those numbers much smaller Norm?
    raisrx251, Apr 26, 2009
    #12

  13. Troy F Collins Husqvarna
    AA Class

    Location:
    alberta canada
    Husqvarna Motorcycle:
    wr125
    Other Motorcycles:
    GGEC 250 Honda RC51 CBR 1000rr CR125
    Norm and Dave you are right....6BFY15-74 is the power up needle in the kit...and the 6BFY 43-74 is the lean restr. euro needle....


    I did some more research on the taper caper.....


    Needle Tapers
    Letter Taper Letter Taper
    A 0º 15' N 3º 30'
    B 0º 30' O 3º 45'
    C 0º 45' P 4º 00'
    D 1º 00' Q 4º 15'
    E 1º 15' R 4º 30'
    F 1º 30' S 4º 45'
    G 1º 45' T 5º 00'
    H 2º 00' U 5º 15'
    I 2º 15' V 5º 30'
    J 2º 30' W 5º 45'
    K 2º 45' X 6º 00'
    L 3º 00' Y 6º 15'
    M 3º 15' Z 6º 30'

    Lets use this needle as an example 6BFY15-74

    the 6 means for mikuni TMX

    the B is the taper closest to the top or clip area 0 deg 30 minutes

    F is the middle taper 1 deg 30 min

    Y is the bottom taper 6deg 15 min

    the steeper the taper(more angle) uncovers more nozzle area therefore G is richer than F....in that taper range

    sometime an additional number will come after the needle spec 6BFY15-74-3

    the 3 is the recommended clip setting.....

    BTW 15min is quarter deg... 30 min is half deg...45 min is three quarter deg...

    Jet Effectiveness

    A=Most effective


    C=Little influence

    B=Partly effective


    D=No influence




    Slide Opening
    1/8 1/4 3/8 1/2 3/4 WOT

    Cutaway
    A A B B C D

    Pilot jet
    A A B C D D

    Airscrew
    A A B C D D

    Needle Jet
    B A A C C D

    Needle
    C B A A B C

    Needle position
    B B A A B D

    Main jet
    D D C C B A
    Troy F Collins, Apr 26, 2009
    #13

  14. Klas Husqvarna
    A Class

    Location:
    Sweden
    Hello Guys

    There is some problems with jetting of the new WR/CR 125 2009.

    It is very difficult to solve this without use the new parts that are dilivered from Huskyfactory. There is a tread here at huskycafe.

    The new powervalves solve the problem. We have tested this weekend here in sweden.

    The bike run great with sock jettting.

    Klas
    Klas, Apr 26, 2009
    #14

  15. Norman Foley Husqvarna
    Pro Class

    Location:
    Trumansburg, NY... The Beautiful, Finger Lakes
    Husqvarna Motorcycle:
    82 250WR 86 250WR 93 WXE350 03 TE610
    Other Motorcycles:
    '85 Fantic 300 '12 HUSABERG TE250
    I kind of figured that the upgraded parts would fix the problem. Thanks Klas!:thumbsup:
    Norman Foley, Apr 26, 2009
    #15

  16. Troy F Collins Husqvarna
    AA Class

    Location:
    alberta canada
    Husqvarna Motorcycle:
    wr125
    Other Motorcycles:
    GGEC 250 Honda RC51 CBR 1000rr CR125
    Well doggie............:applause::applause::applause:
    Troy F Collins, Apr 26, 2009
    #16

  17. Troy F Collins Husqvarna
    AA Class

    Location:
    alberta canada
    Husqvarna Motorcycle:
    wr125
    Other Motorcycles:
    GGEC 250 Honda RC51 CBR 1000rr CR125
    Klas...If I may ask....having run the new parts.....what can we expect..?????

    is the exhaust different.....and what about the silencer...???


    Big thanks for browsing this thread...and chiming in :cheers:
    Troy F Collins, Apr 26, 2009
    #17

  18. Motosportz CH Sponsor

    Location:
    Vancouver WA
    Husqvarna Motorcycle:
    2021 TE250i, 570 Berg, 500 KTM, 790R
    Other Motorcycles:
    many
    Rode my bike in an area with very steep hill climbs and was very disappointed. Played with the needle all over the place and made little to no difference. Falls flat in it's face in the mid, bottom crawls pretty good and top end rips but getting to the top end past the huge hole in middle is very hard and when it drops off again you beck in the huge hole. On up-hills I was fanning the crap out of the clutch to make it up. Something is not right. My 04 did not do this.

    What is the power valve mod / upgrade? Maybe I need to stop chasing the jetting and fix the power valve.

    - Love the bike hate the gigantic hole in the mid range.
    Motosportz, Apr 26, 2009
    #18

  19. HuskyDude Moderator

    Location:
    BC, Canada
    Husqvarna Motorcycle:
    13/TR650
    Other Motorcycles:
    10/EC300, 76/TY175
    Glad I'm not the only one disappointed with this 125 when it comes to hill climbs. Which there are way to many of around here.
    I think I'll park mine for awhile a start practicing with my trials.

    We have our national come up in May and I haven't rode it since last year.

    Attached Files:

    HuskyDude, Apr 26, 2009
    #19

  20. Norman Foley Husqvarna
    Pro Class

    Location:
    Trumansburg, NY... The Beautiful, Finger Lakes
    Husqvarna Motorcycle:
    82 250WR 86 250WR 93 WXE350 03 TE610
    Other Motorcycles:
    '85 Fantic 300 '12 HUSABERG TE250
    For some reason (Power Now?) my '09 doesn't do this. Hills I'd be feathering the clutch on my '02, it motors right up. I'm still prefered power up jetting spec. Not that I don't have some midrange burble, but not the big hole described by others.
    Norman Foley, Apr 27, 2009
    #20
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