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Yamaha Tech Originally the Yamaha XT600 Tech Forum, due to demand it now includes all Yamaha's technical / mechanical / repair / preparation questions.
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  #31  
Old 24 May 2011
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Quote:
Originally Posted by Jens Eskildsen View Post
Sounds like you have some rejetting to do. How did the carb fit, and what did you need to do to make it fit/modify. Was it this one: OFF-THE-ROAD | MIKUNI Flachschieber | online kaufen

Looking forward to hearing more.
Heres a video of the throttleresponse..better then the original. Not giving full gas but i think the needle moves quite good. The engine didnt hesitate/Bog while in free gear in the video..but when i drive and its under load it hesitates if i give tons of throttle at once..strange..maybe im too heavy.
YouTube - ‪xt600 with mikuni tm34-b65 carburetor‬‏
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  #32  
Old 2 Jun 2011
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Wow, thats some difference huh? Hope you'll post more videos as you make progress
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  #33  
Old 4 Jun 2011
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Do you which jets they fitted onto the carb?

hopefully, monday I'll be trying my new carb repair kit and the new jets


Oh, one thing... as for fitting the carbs back into the rubber boots just remove your front mudguard and press you chest onto the bike and pull the carb in. Giggle it a bit!

And remember, once the carb is in place, check if it is fully seated on to the rubber boots! It should stay "stuck" in without the tightening the metal braces!


Vando
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  #34  
Old 8 Jun 2011
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Quote:
Originally Posted by bacardi23 View Post
Do you which jets they fitted onto the carb?

hopefully, monday I'll be trying my new carb repair kit and the new jets


Oh, one thing... as for fitting the carbs back into the rubber boots just remove your front mudguard and press you chest onto the bike and pull the carb in. Giggle it a bit!

And remember, once the carb is in place, check if it is fully seated on to the rubber boots! It should stay "stuck" in without the tightening the metal braces!


Vando
Ahaa, yes it was pretty stuck once I first got it into the rubbers. I could have taken the rear rubber off but i didnt think about that until after + they were glued to the airbox i think.

I have some info for you I went "home" to where my xt is stationed and picked up the document that came with it, written by offtheroad.

It states the basic settings:

Vergaser TM-34B65 mit folgender Grundeinstellung
  • Leerlaufdusen #15 (a jet..but which?)
  • Hauptdusen #110 (main jet?)
  • Dusennadeln 9D2H5-50 (needle type nr?)
  • Dusennadelposition 3/5 (needle position)
  • Gemischregulierschraube 3/4 Umdrehung offen
  • Schwimmerstand 18mm (float height? )
  • Beschleunigerpumpenhub ca. 4mm nach 50% Schieberøffnung (i guess this is the setting of the acceleraturpump?
Also these spare parts jets was in the packet if testing was wanted:
2x Leerlaufdusen #12.5
and 2 x Hauptdusen, jet #112.5
and 2 x hauptdusen, jet #115

But as I said i didnt do any changes
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  #35  
Old 8 Jun 2011
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Leerlaufdüse = idle jet.
Haupt = main
dysenadel = needle
dysenadelposition = Needle position
Schwimmerstand = float level

So yeb, youre correct.
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  #36  
Old 25 Oct 2011
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Any news with the carb and jetting?
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  #37  
Old 25 Oct 2011
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Jens,yet, thanks for the bump on this thread if only for the posting in the first page that has "thrashed/ 1 old nun owner)? Maybe a bit of piston slap?" all within the three lines posted. And thanks Andy aka Ten660
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