Air cleaner off, engine off, look down the throat of the carb. Open the throttle quickly and watch the small brass tube to see if you get a stream of gas shooting out the end. If not, it is plugged.
On the right side of the carb tucked up by the choke coil is a small brass hex screw. Remove that. It is your idle jet and may be plugged. Hold it up and look to see if it is.
