Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Add tension to the spring for the throttle , at the carburetor. Usually you have to bend the bracket the spring attaches to. Just a small amount should do it.
So now the engine will not start? If you remove spark plug and ground it, do you have spark?
If it has spark, it is not getting fuel to the cylinder. Have you removed the float bowl on the carburetor and checked the float and needle passage?