Abstract: An engine has a housing and a working member movable within an interior of the housing and separating a combustion chamber from a non-combustion chamber. Additionally, the engine may include a chamber-ventilation system that may include a passageway with a first end of the passageway connected to the non-combustion chamber and a second end of the passageway located downstream of the first end of the passageway. The chamber-ventilation system may further include a filter system disposed within the passageway. The filter system may include a filter housing and a filter disposed in the filter housing. Additionally, the chamber-ventilation system may be configured such that, during operation of the engine, gas travels from the non-combustion chamber, into the first end of the passageway, through the passageway, to the second end of the passageway.

Abstract: A fuel filter system which includes both a fuel filter and fuel/water separator media in a single sytem. Fuel passes from a tank or other source into the canister. The fuel flows first through the fuel/water separator element. The fuel then exist the canister to the suction side of a fuel transfer pump. The outlet side of the fuel transfer pump sends the fuel back into the canister where it passes through the fuel filter element. The fuel/water separator element and the fuel filter element are combined in a single cartridge.