I already pulled the head and the valves are not stuck.

Dumb question I know but Did you verify that the piston is moving?

ok the valves are not stuck, but are they closing tightly?
Usually a worn engine will have low compression but not complete loss of compression.
in the absence of any compression, either the piston is not moving, or the valves not closing, -------------
-----------or the spark plug is removed, Ha,LOL!:beerchug:

My K161 (7 hp), which is an early spec number, DOES have ACR.

Thanks for the confirmation, Ironman. So if it has ACR, doesn’t that mean the compression will not check properly?

This is directly from the Kohler K Series Service Manual....

"Compression Test
Because these engines are equipped with an
automatic compression release system (ACR), it is
difficult to obtain an accurate compression reading.

To check the condition of the combustion chamber
and related mechanisms, physical inspection and a
crankcase vacuum test are recommended."

I'd put it back together and start it. I believe more tractors are scrapped out because of "repairing them" than wearout.

Share some pix, you got a nice tractor it sounds like.

Heres what it looked like when I got ithttp://www.onlycubcadets.net/forum/p...pictureid=7455

Attaching pictures;

http://www.onlycubcadets.net/forum/s...=6213#post6213