Patent ID: 8104446

Claim:
An engine including an engine body, an insulator, and a carburetor, each of which includes an intake hole, the carburetor being mountable on the engine body via the insulator such that all of the intake holes communicate with each other, the engine comprising: a mounting unit by which the carburetor is mountable on the engine body at any of a plurality of mounting positions by rotation about an axial center of the intake holes; wherein: the mounting unit mounts the insulator on the engine body at a predetermined position, and the carburetor is mountable on the insulator by the mounting unit at any of the plurality of mounting positions by the rotation about the axial center of the intake holes, the carburetor is mounted on the engine body at one of the plurality of mounting positions, and the insulator is provided with a contacting surface and a plurality of communicating holes independent from the intake hole thereof, the contacting surface making contact with the carburetor, the communicating holes being symmetrical with respect to the axial center of the intake holes and intercommunicating between a communicating hole provided in the carburetor and a communicating hole provided in the engine body while a circular communicating groove that intercommunicates between the communicating hole provided in the carburetor and one of the plurality of communicating holes provided in the insulator is provided on the contacting surface of the insulator.