Does the 17HP Command Pro (CV490S) have hydraulic valves? Do the valves require periodic adjustment? I've searched, but I can't find the answer. I've searched YT, and there are zero videos showing a valve adjustment on this engine. The manual I found online mentions "Adjustable Valve Lash Configuration" and "Non-Adjustable Valve Lash Configuration", but doesn't really tell me which one applies to the CV490S.
