So the mower was parked after the last cutting session and the next try, "Click" no crank. It sounds like it is from the starter gear area. Hand on solenoid I feel nothing. I turned the flywheel over by hand and there was no change. So...I tried to take the engine cover off and when it came to the four turn knobs two came right out, and the other two just spun. Anyone have any ideas? Thanks, Rob.