[trularin]

4 stroke engine.

If it fires 180 out, the engine at best will stumble start, but should not run.

Mike H's advice is some of the best I have read for setting up, follow what he has. However, if you are 180 out, simply rewire the distrubutor or move the rotor, either way to get it to fire on the other side of the distributor.

Hope this helps.