Got it to run and rev on stand. However when I put it in gear and take off it won't rev up under load doesn't stall but just won't rev thru gears? Please help! Thanks Steve

 

Clean the carbon out of muffler and baffle???????

 

Check compression and clean carb?

 

Is the air filter clean?

I remember with my old Honda that I hadn't realised which way the choke worked and that caused the bike to run for a few minutes and then run out of power, usually as I tried to ride it.

 

Just pull the baffle,or as they used to call them "spark arrester" out of the expansion chamber and try that.

 

Muffler plugged up is a very sure bet. Without the baffle they are very loud and raspy. However, it sounds like the bike has been sitting a while. That means the baffles will probably be "rusted in". Plan on tearing up the muffler to get the baffle out. There are replacements, if not stock/direct for that bike so it's not a huge issue.