I have a yergdog scout with issues. It had been sitting a long time because
of starting and chain issues. It was always hard to start but ran well. Finally got the chain to stop falling off.
I cleaned the carb but still hard to start when cold. I used a bread bag tie to clean all thee orifices and carb cleaner. runs smooth when it gets going but will not rev past half way when riding. The peddle does nothing after pushing it past half way. It will only rev so high when riding. It will slow right down on a hill and will only creep up till it is on a flat area and then is better. Cleaned the carb with carb cleaner and used bread bag wire to clean all orifices. The air/mixture screw does not seem to do much.
If you turn it all the way in, it still runs. Turn it out 3-4 turns and still the same.
Cleaned the roller weights and rounded off slight flat spots. Also have 15g weights on order and new clutch spring to see if that will help.
I watched the cuv belt run as i had it jacked up and seems to be doing what it should.
Does any one have any ideas? I also have a new carb on order from china.
The air filter is clean and no restiction in the exhaust.

any help will be appreciated
thanks Larry