orignal Robin Engine,5.0-7.5HP

robin engine /EY20 discription: Model EY15-3 EY20-3 EY28B/D Type Forced air-cooled, 4-stroke, single-cylinder, vertical The cylinder counting-interior diameter*stroke 1-63*46 1-67*52 1-75*62 Displacement 143 183 273 Rated power/speed 1.64/3000, 2.01/3600 2.24/3000, 2.61/3600 3.46/1500(3000), 4.05/1800(3600) Maximum torque/speed 5.7/2400-3200 7.9/2400-3200 23.4/1200-1600(11.7/2400-3200) Direction of rotation output Counterclockwise, facing output shaft Use fuel Motor petrol Fuel capacity 2.8 3.8 5.5 Fuel consumption 500(Rated power) Use oil Motor oil,general area SAF#20,#30 10W-30SE grade the above in the cold area Oil capacity 0.6 0.6 0.85 Carburetor Horizontal float type Ignition system Non-contact transistorized ignition Spark plug NGK B6HS Starting system recoil Form of changing speed Centrifugal heavy hammer type Lubricated way splash Form of reducing speed --- --- 1/2camshaft reduce Light uo system --- --- --- Aircleaner Half wet Half wet dry Net weight 14.2 16 22(21.5) Dimensions(L*W*H) 294*332*368 303*330*392 347*400*440 Motor speed Type3800±1004000±1002000±50(4000±100)Type1250±1001250±100600±50(1250±100)