Bad Boy MZ Magnum purchased 2013 with B & S 27hp engine has never started readily from cold start after the first season; it's as if the choke just doesn't function. Last two years I've had to resort to ether to start engine.  As long as engine is warm, maybe i hour after a stop, it will start back up.  Longer then two hours after mowing, and it's difficult to start.  Should I break down and replace choke?
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