Small Engine Troubleshooting Problems? Ask a Mechanic Now.
With spark plug removed, do you have compression? With no gage, use finger with rag over the hole , to see if it has enough comression to move your finger.
If it has spark and compression, put a teaspoon of fuel into the cylinder , re-install the spark plug and see if engine will run for a few seconds.
If not, check the valves for movement, and if ok, the next thing to check is the timing key between flywheel and crankshaft.