This unit is recoil start and has no electric clutch and is gravity feed on the gas flow. The engines listed have the same mounting and the same shaft size. The FB460V single cylinder engine is no longer available. Some of the these units have a V-Twin Kawasaki FH381V engine. You can use the suggested V-twin engine. PLEASE NOTE: the single cylinder and the V-twin engines are totally different and would not directly interchange each other.