Easiest first thing to try is to pop off the air cleaner and give the throat a little spray of starting fluid. Not a lot, just a short spray. Then try to start it and see what happens. You will want to try to crank it very quickly after spraying as the fluid evaporates quickly. You might want to quickly set the air cleaner back on the carb as soon as you spray it, just to be on the safe side, and have an extinquisher handy.

This isn't a super dangerous thing to do, but you do want to make sure the garage door is open and that you just shoot a little spray into the carb. If it fires but stalls, you probably have a fuel problem. If it doesn't fire, you probably have an ignition problem.

Don