Update: New sprocket only on one side. -- Specifications & Features -- Year: 2016. Make: John Deere. Model: 550K LGP. Serial #: 1T0550KXLGF301771. Engine: John Deere 4 cylinder. Fuel: Diesel. Meter Reads: 2,844 hours. Blade: Yes, 9'6"×37". ROPS: Open. Heat: yes. AC: no. -- Seller Statement -- One owner machine! Forestry package, new front idlers, tracks rotated, No winch, 18"×10'6" Tracks, good running machine!