I've got the 19 courage, only 2 things has been the needle failing, and now the stupid yellow ez drain is leaking... Gonna replace it with pipe.I have a Kohler Courage 18 hp on a 2006 Gravely 1844 XT as of yesterday it has 815 trouble free hrs, all that's been done is oil change once a year approx. 40hrs, adjust valves every 200 hrs and I check pan bolt torque every year, it has been one of the best engines I've owned, I have noticed this year its power is slowly going down but only in thick wet grass.