<p>A two-cycle engine configured such that the axis center (C cy ) of a cylinder (3) is offset to the exhaust port (32) side relative to the rotation center (C cr ) of a crankshaft (4). The amount (S) of the offset of the axis center (C cy ) relative to the rotation center (C cr ) is set to be not less than 1 mm but not more than 6 mm. Also, the center of gravity of a counterweight (42) of the crankshaft (4) is shifted rearward in the rotation direction relative to a line passing through the rotation center (C cr ) of the crankshaft (4) and the center (C cp ) of a crank pin (41).</p>
