Patent ID: 7070147

Claim:
An engine comprising: a cylinder block; at least one cylinder; at least one slidable piston within said cylinder and at least one piston pin for connecting the piston to a connecting rod; a filler tube for filling lubricating oil, said filler tube having a first end attached on a side surface of the cylinder block and an other end extending outwardly away from the engine, wherein said first end includes an elbow portion; a service hole being formed on the side surface of the cylinder block, said service hole permitting the insertion of the piston pin for connecting the piston and the connecting rod; and a hole cover for covering said service hole being integrally provided with the first end of said filler tube, wherein the first end of said filler tube is inserted into said service hole, said service hole being covered by fixing said hole cover to the side surface of the cylinder block, wherein the hole cover extends laterally from said elbow portion and in a position surrounding said service hole.