Abstract: An evaporative emissions control system for small internal combustion engines includes a control valve associated with a fuel line and with a vent line which each connect the fuel tank to the carburetor. When the engine is not running, the control valve automatically closes the vent line and the fuel line, thereby trapping fuel vapors within the fuel tank and vent line and preventing the supply of liquid fuel to the carburetor. Upon engine start up, actuation of a bail assembly or vacuum produced within the carburetor causes the control valve to open the vent line and the fuel line, venting fuel vapors from the fuel tank through the fuel line to the carburetor for consumption by the engine, and opening the supply of liquid fuel from the fuel tank to the carburetor.

Abstract: A combination of an engine and a pump. An integral first housing section defines a portion of both the engine housing and the pump housing and has a first major surface which defines a portion of the interior engine housing surface and an oppositely disposed second surface which defines a portion of the interior pump housing surface. The first housing section has an opening and a first bearing is disposed therein. The crankshaft extends through the opening and is supported by the first bearing. A pump driving mechanism, such as a wobble plate or camming member, is coupled with the freely extending length of the crankshaft projecting beyond the first bearing. The first major surface may define an oil sump within the engine and an oil passage extending between the first and second major surfaces may communicate oil between the engine and the pump.

Abstract: A combination of an engine and a pump. An integral first housing section defines a portion of both the engine housing and the pump housing and has a first major surface which defines a portion of the interior engine housing surface and an oppositely disposed second surface which defines a portion of the interior pump housing surface. The first housing section has an opening and a first bearing is disposed therein. The crankshaft extends through the opening and is supported by the first bearing. A pump driving mechanism, such as a wobble plate or camming member, is coupled with the freely extending length of the crankshaft projecting beyond the first bearing. The first major surface may define an oil sump within the engine and an oil passage extending between the first and second major surfaces may communicate oil between the engine and the pump.