24 hp kohler

[stevemarch]

hello all, Im new to this forum. Question, I have a brand new Husqvarna mower that has 3 hours on it. It runs good with no load but when under a load I get a vibration and the rpm's drop. I set the no load to 3600 rpm. The funny thing is the left cylinder valve cover is cool to the touch and the right is very hot. I checked spark on both sides and Im getting spark. So the coil I think is good, spark plugs are good.
That all said where should I look? Thanks

 

[Rivets]

You should be looking for a good Husqvarna and Kohler authorized repair shop. Don’t ruin your warranty by trying to repair on your own. Sounds like a valve problem.

 

[stevemarch]

Found on the left cylinder push rods bent and the rocker arms in the valve cover. Installed new push rods, adjusted valve lash and she runs great.