Structure for suctioning back blow-back fuel

A structure for suctioning back blow-back fuel, the structure comprising:

• a first fuel storage vessel disposed on an upstream side of a carburetor of an engine and contiguous with an air-intake passage of the carburetor;
• a suction-back passage through which fuel accumulated in an air cleaner is suctioned back into the air-intake passage;
• and
• a blow-back suppression plate disposed between a filter element of the air cleaner and the first fuel storage vessel and configured to suppress blow-back from the air-intake passage, wherein
• the suction-back passage allows communication between a fuel accumulation container in the air cleaner and a suction-back port formed in the first fuel storage vessel,
• the air cleaner includes a cleaner case connected to the carburetor, and a cleaner cap covering the cleaner case and the filter element, and
• the suction-back passage is formed by:
• the cleaner case;
• a pair of projecting walls formed so as to be integrated with the cleaner case;
• and
• the blow back suppression plate which is in contact with tip ends of the pair of projecting walls.