Patent ID: 8033256

Claim:
An engine having a variable valve mechanism arranged to switch a lift degree of a valve between a low speed state and a high speed state, the engine comprising: a cam carrier including a cam bearing portion provided on a straight line passing through a bore center of a cylinder in a plane perpendicular or substantially perpendicular to an axial direction of a camshaft and arranged to support the camshaft and a rocker shaft support, the cam carrier being detachably provided at a cylinder head; a rocker shaft arranged parallel or substantially parallel to the camshaft at the rocker shaft support; a low speed rocker arm swingably supported by the rocker shaft and arranged to swing according to a low speed cam of the camshaft to push a stem end surface of the valve; a high speed rocker arm swingably supported by the rocker shaft, aligned with the low speed rocker arm, and arranged to swing according to a high speed cam of the camshaft; and a switching device arranged to disconnect the low speed rocker arm and the high speed rocker arm in the low speed state and connect the low speed rocker arm and the high speed rocker arm in the high speed state.