deerslayer1979
New member
I have had sleds before and am a mechanic by trade, (actually and instructor now), and have bought 2 Blue and Silver Yamaha Exciter 300 twins for my kids. One was a runner but it didn't run all that well. Got em home, pulled the carb and cleaned it up, also installed new plugs. Wasn't all that dirty and didn't really fix the hard start issues. After toying with it found the choke cable was loose under the dash and sticking in the carb. I got that cleaned up and the cable moving freely and it starts and runs really good!
Downside, after a hard run at WOT the engine dies out and needs the choke to keep from dying. With the choke on it runs like a champ and only requires a small amount of throttle play to keep it running in the powerband. I tried adjusting the screw on top starting at 1 turn out, and went both directions a full turn, in 1/4 turn increments. None of which seemed to help, actually made it less responsive while sitting in my garage. The last bit of info I can give you is sometimes when i try and get it to take off from a stop the engine bogs and will not rev. Even if I keep it pinned I get nothing. Flip the choke and let the idle stabilize it seems to get going just fine. So, what is going on? I has good spark, new fuel pump, new plugs, a clean carb, and runs great when it wants to. Once I get it to run decent I will be looking at other things to make it a bit more little kid friendly, but I need to know it wont leave my kid stranded and make me walk out into the field to get it running again.
Thanks,
DS79

Thanks,
DS79