Cold weather carb adjustment advice needed quickly

3 replies to this topic
  • bassr_#186

Posted February 28, 2002 - 11:21 AM


I am racing a STC series MX race this weekend near Houston on my 00' 426 and the high temperature is supposed to be 39 degrees. (We have been lucky during the first 6 races of the series and the average temp has been in the mid 60's). My carb settings are 100% stock and the bike runs great (but I haven't ridden it much below 50 degrees). Will the stock carb settings be too lean in the cold temperature? Can I make any minor adjustments (i.e., no jetting changes) that will get me through the weekend? Thanks in advance.

  • PK

Posted February 28, 2002 - 02:48 PM


For winter riding here, I usually just mess with the fuel screw. You'll only have to do this if the bike pops when decelerating, otherwise just ride it, and good luck...


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  • urla

Posted February 28, 2002 - 02:58 PM


Under 50F cover half of one radiator.
Under 32F cover one radiator.

  • skthom2320

Posted February 28, 2002 - 06:24 PM


Adjust the fuel screw OUT to richen as necessary to keep the decel popping at a minimum. Worse is if your idle is "hanging" a little high - fuel screw adjustment will help this too.

You may want to change the clip position on the needle as well.

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