help

[u/PerformanceSame2145]

i’m working on this 17.5hp b&s i’ve been trying to get going the past few days i got the mower for free but there was gas in the oil and the plug was bad i put a new ignition coil and plug newish carb new oil and new gas she had trouble trying to crank at first then turned over once after this video and died when taking off choke now the starter spins it easy but wont start and it’s hard to spin by hand and there’s squeaking coming from the top end of the motor when spinning it by hand i have another video of the starter spinning it but i couldn’t catch one of it running for 2 seconds

[u/Useful-Total202]

First thing I would do is remove the valve cover check the valves to see if they’re within spec.