Thanks for the replies. No problem being blunt. I do almost all my own servicing of vehicles and engines but know less about small engines. My mower finds it hard to crank the engine, even with a good, fully charged battery and has done so for a long time. The symptom fits valves needing...
I have a Craftsman 21HP 42" riding mower. It has a B&S engine 461707, type 0147-E1. Is this an OHV engine? Where is the valve cover? I cannot find it and want to adjust the valves. Thank you.