On my 8 yr old toro 15 hp kohler command all of the sudden it is a bear to pull the recoil. I was able to start the wb and use it all day by just letting it run. I figured if it was seizing up it wouldn't't have run so good and that would be my answer. When I got home I got on the kohler site and in their shop manual it mentions an ACR. Automatic compression release. It releases compression so you can pull start the motor. Anyone have this experience. This sounds like a trip to the shop. This mower has paid for itself many times over and a new kohler command is around $600 so I may just get a new motor. If the fix is $300 or less I may go that route.