We have 2 V twins, one is a Kohler, one is a Kawasaki and the valves adjust the same way, but with different settings  However, the Kohler has no valve cover gaskets so I cut a set from gasket material and used my trusty Kubota 3 bond sealant on the gaskets I cut.  You should adjust the valves every 200 hours at least.  I tend to run my intakes a bit tight.  It's the intake valve that actuates the compression release.  If it's a Kohler, check the starter motor too.  They have a bad habit of getting loose and binding up.