[T77911S]

I was working on a friends mower, 13.5 BS engine.
as soon as I cranked it I could tell it no compression.
turns out BOTH in and out valves were too tight and not closing.
there was also a bolt broken off on the valve cover.
now the mower is not that old/not much use and it is owned since new buy a mother and daughter. she swears no one else has worked on it.

the million dollar question, how the heck did BOTH valve get so tight they wont close.
I am not talking just a little too tight, I had to turn the adjuster a good bit.

I can get it to fire but the needle valve in the carb is bad and it is now flooding.