Multi-position operable four-cycle engine

摘要

A power tool is provided having a rotary implement driven by a four cycle engine (30). The engine crankcase (38) is vented via an axial passageway (72) which extends through at least one of the crankshaft and camshaft axial shaft members. The rotating shaft member (62) inhibits the escape of oil when the engine is running due to centrifugal force.