Parts list: № Number Qty Name Options 1 AA32776 1 Drive Sprocket Z = 12, 50 Pitch 2 A31867 3 Lock Nut 3 A51001 1 Screw 4 A51002 1 Arm RH, Idler 4 A51003 1 Arm LH, Idler 5 28H3412 1 Washer 0.493" X 0.675" X 3/8" 6 A50386 1 Chain Sprocket Z = 28 7 19M7303 2 Cap Screw M12 X 45 8 A46643 1 Spring Next page: ST1032650 Position Sensor, Main Frame ST847934 Hardware, Wheel Arm ST1025746 Heavy Duty Wing Wheels, Skid Steer ST726001 Attachment, Frame Drive / Gauge Wheel Module ST1039025 Gear Case and Drive Cable, Pro-Shaft™, Short Arms