Firstly, is it just me? I can't upload pics on this site. Grr.
My new150 won't idle. There's only adjustment screw, on the left hand of the carb. It isn't right under the throttle slide, but further back. Nor does it go in at an upward angle. Turning this screw has no effect on the idling speed.
There is no other screw on the carb.
???
The bike goes great btw. Obviously it's not powerful enough to be useful for anything other than mooching about on but I have bigger bikes for actually going somewhere. (And a car) And the mix IS 33:1