Firstly, it won't idle. Cleaned the carb until it had a shine, but after putting it all back together, I was expecting it to idle. Not the case. The idle screw does nothing, turned all the way in, or removed completely.

Before it would idle at first, then die, not it does nothing. Also have to hold the throttle about 1/4 of the way open for it to start, whereas before cleaning it would fire up without throttle, but not idle. Plug is a dark brown color.

Also, was wondering if anyone can ID it:



Also a couple more questions:

Where can I get a 3.00-12 inner tube?

Where can I get sprockets for it? I was thinking of going up 1 tooth on the front, then down 2 on the rear, since first gear is about as useless as a flat tire, and I'd like to get more top speed out of it.