Patent ID: 8186326

Claim:
A two-cycle engine, comprising: a crankshaft having shafts on both ends thereof, and a crankcase that pivotally supports the shafts of the crankshaft through bearings, wherein: a collar projects radially outward from an outer circumferential surface of an outer ring of at least one of the bearings, an inserting portion having a constant inner diameter penetrates the crankcase, an engaging portion having an inner diameter that is larger than the inner diameter of the inserting portion is provided at a side of the inserting portion that is at an interior of the crankcase, and the at least one of the bearings is inserted in the inserting portion such that (i) the outer circumferential surface of the outer ring is in direct contact with an inner circumferential surface of the inserting portion, and (ii) the collar provided on the at least one of the bearings contacts the engaging portion from an inner side of the crankcase.