1.Model:SH-81 walking tractor with plough 2.Engine:175/180/190,etc ... ,which produce walking tractor in these models: SH-61,SH-81,SH-101,SH-111,SH-121,SH-151,SH-181 ... .1,5.16.5,11.4,18.7Reverse1.1 3.81.30,4.60Rotary Tillerspeed (rpm)High256275Low188219 Diesel engine ModelS180S190 Type ...