What size main jet came stock in the yamaha Blaster 26mm mikuni carb. mine has a 330 in it. It runs pretty good but inthink it might be a little rich..
J just have a k&n filter fmf Full exhaust thats about it i m pretty sure i just got this blaster at the end of last fall so not sure if there are any mods to the motor.
My spark plug was totaly caked with sh*t when i pulled it out but it still ran good just went and got a couple new ones to find out for sure if its too rich.
/\ that, maybe even 290/300 depending on current riding temps and elevation.
do not run it again until you plug chop to confirm jetting, or your next question will be...."what piston"