Select page: PICT-020.1 20 ENGINE ST580608 Cylinder Block and Dipstick ST580609 Crankshaft and Piston ST580610 Cylinder Head ST580611 ENGINE GASKET KIT ST580612 ENGINE GASKET KIT (ENGINE MARKED 441577-0113-E1) ST580613 ENGINE SHROUDS Other parts group: 20 ENGINE 30 FUEL AND AIR 40 ELECTRICAL 50 POWER TRAIN 60 STEERING AND BRAKES 80 WHEELS, FRAME AND OPERATOR STATION 85 MOWER DECK AND LIFT LINKAGE 90 LABELS