Husqvarna rancher 50 came in on part exchange. I’ve put a little fuel in a tank but it didn’t start. I’ve had the top off and the saw starts with easy start and then cuts out. It did run for a few seconds and then stopped. , my diagnosis is carb clean probably new fuel line and fuel filter you’ll probably see this running with a tuneup Only thing I can see that was missing is the chain tensioner Other than that good so good compression good bar and chain will clean up nice 
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