RB20/RB28 Gasoline Engine 1)Robin Type 2)EPA/CE approved Specifications: ... ,4-cycle,signlecylinder, Air-cooled,4-cycle,single cylinder,side valve gasoline engine side valve Displacement(cm3)183 273 Rated output ... P.T.O.shaft Counterclockwise ,facing PTOshaft FuelAutomobile Gasoline (unleaded) Automobile Gasoline unleaded Fuel tank capacity(L) 3.8 5.5 ... 445*380*490 N.W(kg)15 22 Robin Gasoline engine