I have a 14HP OHV B&S engine Model 287707, I started it this winter and it ran fine. But now I can't get it to start. I have a good spark, compression, fresh fuel, it sounds like it wants to start but just doesn't ignite. Valves have never been adjusted but would that really make much difference just from the winter when it ran fine? How do I adjust the valves? Tried everything I can think of and at a loss.

Thank you.
Shawn

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