First check to see if is truely an bad engine: Check all of these and report back.

Can you crank the engine over by hand?

If you open the throttle fully and blow into a tube connected to the inlet nipple, can you hear a slight hiss as the air comes out of the carb?

Remove the glow plug, put it on the ignitor. Does it light up to almost a reddish white color?

With the glow plug out turn the engine over. Do you feel a LOT of resistance? ( hopefully only a little ).

Put the plug back on, open the throttle to about 80%, and put your finger over the intake.

Crank the engine over by hand ( no glow ignitor installed ) until you see fuel move up to the carb, then continue to crank 1-2 times more.

Let go. The fuel may seep backward. If it does it should do so somewhat SLOWLY. If it does so quickly the engine is too rich.

If it seeps back slowly, choke it again and crank it one or two turns past when the fuel gets into the carb. Then throttle it down and put the ignitor on it and turn it over to start hopefully using an electric starter...

The engine should at least fire or kick if it is getting fuel.

If it does not, remove the ignitor and while turning it over with an electric starter look down the fully open intake.

You SHOULD see fuel moving or spraying in.

Do you?