... bore,improving design on the aspect of fuel system,power output,with the features such as compact,light weight,,powerful ... noise of main bearing.·Powerful, big torque, sufficient power, so it is used to use in the mountain ... square combustion chamber Compression ratio 17.5:1 Rated power/speed (KW/r/min) 74/3000 Max torque/ ... speed(N·m/r/min) 265/2000 Full load min.fuel ...