ExmarkMetro and Viking, Serial No. 90,000-190,000 with 36", 48" and 52" deck; Turf Tracer front deck walk behind, Serial No. 60,000-149,999 with 52" and 60" deck; Turf Tracer HP, Serial No. 150,000-260,000 with 36", 48" and 52" deck; and Turf Tracer Hydro with floating decks, Serial No. 190,000 and higher