Pump system for chain saw, has adjustable oil pump regulated by a chain saw operator to adjust the quantity of oil being conveyed, while a basic oil pump is connected in parallel to the adjustable oil pump

摘要

An adjustable oil pump (2) is regulated by a chain saw operator to adjust the quantity of lubricating oil (1) being conveyed, while a basic oil pump (3) is connected in parallel to the first oil pump. The basic oil pump has a fixed capacity.