My cousin bought a new riding mower from Lowe's and used it once or twice on her lawn and
it suddenly started making an awful clanking and clanging sound like a mule kicking in a tin
stall. Yet it ran I was told. I went over to try and find out what was wrong with it. The instant
I fired it up I killed it. I knew something "internal" had given it up and told her to load it and
not start it up period and haul it to the dealer-authorized service center. Not the closest shop
mind you, but 14 miles away across town. What happened was a broken camshaft! Broken in
two pieces, yet enough of the rough edges and the angle on which is broke kept it together with
the pressure from the block and the plate that held the camshaft! A new cam and valve adjustment
and it's running fine today. So beware of doing even minor work on a "warranty" unit. As far as
your motor having low to no compression it could be valves out of adjustment, or the rocker arm off
its pivot, a bad cam, or bent pushrod. Let us know what the Kohler Doctors find out on your
patient. :thumbsup: