johnrgib

Folks- I'm new to this forum but it looks as though my problem may not be. I have a 1980 Yamaha DT 125 Enduro. I'm the second owner and it has about 5,000 original miles - garage kept (always) and not run for over 10 years. It cranks fine, but the problem is that the engine struggles at mid to high end of the power band and it smokes a bit (at high end). The jets are relatively new, and the gas tank has been cleaned and sealed. Air filter is clean. Muffler is ok, for 30 years old and very difficuly to find a replacemtn for - unless others haev ideas?? Perhaps a larger question is, what type of carb do I actually have? The Clymers manual suggests that it is a Type III carb with an air screw to adjust air / fuel mixture. It would make sense that this would be something easy to try, but alas, there is no such screw on my carb. I doubt it's the wrong carb, but who knows. Any ideas for my power outage? sorry for the detail, but just giving the history. thanks