My Metro HP was turning off today when I put the transmission into gear. The "nuetral start switch" had given up and when the "nuetral start switch" goes, so goes the mower. A fix it in the field remedy is to connect the two wires that attach to the switch atop the transmission. This negates the safety run away feature, but will keep you mowing until the part can be replaced. The fine folks at A-1 Outdoor Power were my saviors again.