Hi guys...I have looked but not found any info re- my Honda 2hp valve adjustment. The owners manual<br />says it needs to be done every 20 hours, but it does not say what the tolerances are or if the motor should be cold or warm. My Honda 15hp had an O-ring valve cover gasket that was reusable...does the 2 have the same? Also, do I need to change the lower leg impeller? It has never been done. Is this a simple job? Thanks... Wellcraft.