I can't thank you enough for this post. My wife's TTR would hardly ever crank until the battery ran down. I followed your directions and rejetted it today. Man, it fires first time every time. I can also tell the the increase in power.
My wife's TTR is notoriously hard to start when it is cold, I am thinking of rejetting it and modifying the airbox while I am off this week. What sized jets should I put in? Live in Tennessee moderate temps and near sea level.
I have a 2005 ttr250 (the u.s. version) would all these instructions from the Uk on rejetting the carb be the same or is my carb different? Also, Where in the U.S. can I get the jets and possible a new pipe?
Memphis trail rider.