Small Engine Troubleshooting Problems? Ask a Mechanic Now.
When it does not start or quits,do you have spark at the plugs? Remove spark plug and with it attached to spark plug wire,and grounded to the metal of the engine, see if there is spark. While plugs are out, what is the compression on each cylinder? If you have spark and compression around 80 psi, put a teaspoon of fuel into the park plug holes, re-install the saprk plugs and see if it wil start for a few seconds.
If it does, has to be a fuel problem and the carburetor may need to be rebuilt.
Did you find the problem?