The factory settings in the manual are a bit lean in my opinion. Most engines seem to like 2 1/4 turns on the main, and 1 1/2 to as much as 1 3/4 on the idle.
If you have spark and the engine is getting gas, you have either a compression or timing problem; I'm leaning toward the latter. It's very easy to check with an ohmmeter or timing light.
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