Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Does the primer bulb get hard? Have you double checked the fule lines for splits? Could fuel lines be reversed? Why was new carb installed?
If you remove spark plug and put fuel direct into the cylinder, re-install spark plug , will it run for few seconds?
Coil has to be gapped at .010, but that is all that is required, the actual timing for the engine , is the key between flywheel and crankshaft.
Has the compression been checked? Needs to be 140 psi and up!
If compression is ok, then the flywheel should be removed and the timing key checked.