The KTM300 Thread

Discussion in 'Thumpers' started by GasGas300, Jan 11, 2010.

  1. Spino

    Spino Adventurer

    Joined:
    Jan 15, 2019
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    24
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    Boulder, Colorado
    Having some carb trouble with my ‘06. The bike revs really high when idling. Idle screw adjustments make no difference. I tried getting a new idle screw, but that didn’t fix it. Noticed there wasn’t an O-ring between the spring and the carb body on that screw so I added one in case that was the issue. No dice. When I slightly release the clutch while still idling the revs get more normal.

    The idle screw has worked before, fairly recently, so I think I might have messed something up recently when cleaning the carb or something like that.

    I have a JD jet kit at the leanest setting as I live at 5,000 feet and ride up to 10,000+ feet.

    Thanks in advance for the help!
  2. Anatoli

    Anatoli Pale rider

    Joined:
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    Skagit Valley, Washington
    AC20334E-70CE-4F8D-85E7-8DE405B8D957.jpeg B7C4637E-A2E1-44A0-9097-5C4B4D45F9C1.jpeg A617A725-D6C3-4115-B536-B966E97B946E.jpeg 2B11C71F-95CA-4288-B3C0-9FDC957F07D4.jpeg Somewhere near the Canadian border lie a few hidden gems. This is 300 country.
    powderzone, Foiler, Nowwhat and 13 others like this.
  3. Dan950ser

    Dan950ser Two Wheeled Addict

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    Anatoli likes this.
  4. Anatoli

    Anatoli Pale rider

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    Walker is open all winter. I won’t be running a worn out D 606 on the rear.. I need all the help I can get. Just installed a new 525 Cheater after Mad River. I got 1100 miles out of the last one. Not bad for a sticky tire.
    Bitingdog, Dan950ser, NWBoon and 2 others like this.
  5. 1 lunger

    1 lunger Long timer

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    Sounds like it running lean or did you AF screw?
  6. Spino

    Spino Adventurer

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    It is running pretty lean but not really more than before when I wasn’t having this problem. AS is about 2-2.5 turns out.
  7. Rusty Rocket

    Rusty Rocket Life behind "Bars"

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    Replace the pilot jet and check the float level. The passage in those jets are really tiny and the slightest build up is huge.
    2 stroke carbs, the mixture screw is an air screw. Opposite the 4 Stroke carbs that have fuel screws. Turn an air screw in to richen things up
  8. 1 lunger

    1 lunger Long timer

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    I’m 1 or 1.25 out. 2-2.5 is a good bit
    Rusty Rocket likes this.
  9. kjclark7

    kjclark7 Long timer

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    Where's it running lean. Can you describe what's happening and when?
    As far as your air screw setting, at 2-2.5, it's set pretty lean.
    I'd first start by going to 1.5 and getting the bike nice and warm. Then reevaluate and if still lean, go on a quarter turn at a time and see if that helps.
    If your in more than .75, then you'll need a bigger pilot. Bump up 1 size and start at 1.5 and test.
    You also may need a bigger main but it depends on where your lean.
    If the bike has sat, it's a good idea to go in and clean it, check/ set the float height and go from there.
    Good luck, you'll get it.
  10. kjclark7

    kjclark7 Long timer

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    I took a 3 hour ride up to Mass yesterday to get all the parts I ordered. I also had to pick up replacement parts for the bike since mice found a home in my bike while it was in the crate for years.
    Anyway, I had to replace the wiring harness which was pretty easy.
    Then I got to putting everything else together.
    I finished up around 11pm last night and hope to get out sometime soon for its real maiden voyage.
    At some point, I'l prob take that light switch bracket off and paint it black.
    Dealer ordered a blue spring which I wasn't too pleased with but I'l get over it. 20191004_171645.jpg 20191004_191518.jpg 20191004_193720.jpg 20191004_193726.jpg 20191004_193731.jpg 20191004_202503.jpg 20191004_202511.jpg 20191004_221807.jpg 20191004_221811.jpg 20191004_221816.jpg 20191004_221820.jpg 20191004_221843.jpg 20191004_221848.jpg 20191004_221904.jpg 20191004_231054.jpg 20191004_231029.jpg 20191004_231017.jpg
  11. Gordy

    Gordy SUPPORTER

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    :thumb That looks great!
    That shows part of the brilliance of the 300s. We can hit stuff like that and also take the same bike with little adjustment, blast desert whoops, climb sand hills, pick through rock gardens, race hard enduro, etc.
    When you think that we do all of this packing very few tools or parts (running the same plug for a year+) it's just crazy.
    We are living in good times to have this caliber of motorcycle available for us.

    The same praise for our trials bikes. We can buy basically the same bike that the World Riders compete on (well....except Honda :rolleyes).

    To get comparable machines in most other motor sports you would be spending hundreds of thousands of dollars.

    Just throwing some :raabia:feelgood for these bikes out there!! :lol2

    BTW, it's been pouring rain around here and the desert needed it. Might have some pics this evening. :D
  12. RideFreak

    RideFreak Torque Jockey

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    Out in the NM Dez somewhere
    I'll be out there sunday :evil
    alvincullumyork and Gordy like this.
  13. Anatoli

    Anatoli Pale rider

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    We love your pictures! There are lots of guys who can’t ride for whatever reason ( not me..) and really value the photos and video that other inmates provide. It keeps hope alive for those slogging in the trenches. I have been there, believe me. That is why I now ride absolutely as often as possible: 25 days in August..make every day count my friend. Nobody can take the good times you have shared away from you, unlike your house, children, truck, wife, etc.
  14. cal08

    cal08 Been here awhile

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    Spring looks trick. Too much orange gets all matchy matchy. My 2 cents. If any ones asks, just tell them it goes to eleven.
  15. Bitingdog

    Bitingdog That's not my dog

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  16. kjclark7

    kjclark7 Long timer

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    Oh man
    Just came back from my first trail ride on the xc. Now I see why all the fast guys around here run the xc. That bike just wants to go. The suspension felt promising but needs to break in and will need some fine tuning.
    I knew within the first 5 minutes of riding that I was going to like the xc and linkage.
    I know how my setup xcw reacted over every bump and this bike is just better. I can't wait till I get it dialed in... it will be incredible.
    I did notice climbing some hills that my xc doesn't have the low end grunt that the my xcw had. The bike is still breaking in so time will tell. Only 2 hours on the girl now.
    I can't wait till my next ride where I'l experiment with the psi a little more. 20191005_182343.jpg
  17. guns_equal_freedom

    guns_equal_freedom Long timer

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  18. kjclark7

    kjclark7 Long timer

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  19. guns_equal_freedom

    guns_equal_freedom Long timer

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  20. Gordy

    Gordy SUPPORTER

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    Don’t bother. We wrecked the place! :rofl

    4D34C401-4EB0-41E9-9826-575A39303FE7.jpeg