Ivanoel

thanks to all of you

Hello, Firts sorry my english, i´m from portugal.... I was thinking, and, a tried an experience on the main jet, so i bougth a main jet with the same size 210, and i open the hole with a paper clip, a maybe the hole was to big. And when i drive the bike, the bike has instant power e them looses it and the engine chokes, going full throttle. when i gently acelerate everythinks find, but no fun at all.... So a put the original main jet (210) and it runs much better. I goint to have the same problem with putting the main jet 240 or it´s going to be better? i appreciate the help, thanks

thanks

Hello, I have a Yamaha DT125R of the year 2000 (http://www.bikepics.com/pictures/1562742/), it´s a stock motor, but with a firebox pipe and a SPES exhaust, with carbon power reeds. It´s has a mikuni carb VM26SS (http://img87.imageshack.us/img87/2152/cimg1063tr8.jpg), the main jet is 210, Air jet 0.7, Jet needle 5J25, pilot jet 22.5, power jet 60. I don´t understand must about carb, and i want to have more power, a friend of my tells me to change the main jet to 240, and the other jet´s remains the same? this is not going to affect the misture? I will have more performance with the 240? i appreciate some help.... Thanks