Abstract: A zero turning radius mower oil extension kit includes a supplemental oil tank that may be installed under a wet sump of a zero turning radius mower engine. A plurality of conduits may be installed between the supplemental oil tank and at least one drain port of the engine for continuously circulating a volume of oil between the supplemental oil tank and the wet sump of the engine while the engine is running. The kit extends the time between oil changes because of the increased volume of oil in the supplemental oil tank and the wet sump.

Abstract: A zero turning radius mower oil extension kit includes a supplemental oil tank that may be installed under a wet sump of a zero turning radius mower engine. A plurality of conduits may be installed between the supplemental oil tank and at least one drain port of the engine for continuously circulating a volume of oil between the supplemental oil tank and the wet sump of the engine while the engine is running. The kit extends the time between oil changes because of the increased volume of oil in the supplemental oil tank and the wet sump.

Abstract: A method of manufacturing a plastic camshaft having a tubular metal insert using a die assembly having a pair of aligned pins. The tubular metal insert is cut to a length slightly shorter than the length of the finished camshaft and is placed on one of the pins. The second pin is then inserted into the opposite end of the tubular metal insert during the closing of the die assembly. The pins properly align the metal insert within the mold cavity of the die assembly during injection of a surrounding plastic material which forms the remainder of the camshaft. The pins also axially compress the tubular metal insert and have tapered shoulders which bear against and slightly deform or flare the end regions of the insert. The flared ends of the tubular metal insert tightly engage the pins and prevent the formation of flash within the hollow interior of the tubular metal insert.

Abstract: The present invention involves a self-cleaning air filter assembly for an internal combustion engine. An air stream is directed into an air filter housing and a portion of the air stream is filtered by an air filter assembly which may include one or more filter media and the remaining portion of the air stream is discharged from the air filter housing through an exit opening. Particulates contained within the excess air are discharged along with the excess air through the exit openings and are not deposited on the air filter. Vibration of the air filter due to operation of the engine also loosens previously filtered particulates which are also discharged through the exit openings with the excess air. The cleaned air which is passed through the air filter is used in the combustion process.

Abstract: A crankcase breather assembly for an internal combustion engine. A breather opening is provided in the crankcase for communication of combustion gases out from the crankcase interior. A breather unit is disposed in the opening and includes a cup having a valve therein for venting gases from the crankcase interior upon the condition of positive crankcase pressure. The breather unit further includes an elastic retaining member which covers and retains the cup therewith. The retaining member includes an integral breather tube. The retaining member further includes an outer groove that frictionally receives a peripheral edge of the opening to sealingly retain the breather unit in the opening without the use of fasteners.

Abstract: A compression release mechanism for an internal combustion engine type having a combustion chamber, an intake valve and an intake valve lifter, an exhaust valve and an exhaust valve lifter, and a rotatable camshaft including a camshaft gear and inboard and outboard camshaft lobes fixed thereto. A centrifugally activated movable member is disposed at the outboard side of the outboard camshaft lobe and rotatably engages the camshaft. The movable member includes a slot formed therein and a lifting surface adapted to engage one of the intake or exhaust valve lifters. 104 of A retainer including a guide pin for slidably engaging the movable member is provided at the outboard side of the movable member and rigidly engages the camshaft.

Abstract: A fuel line cooler (34) is provided for a marine propulsion system (2) having a water cooled internal combustion engine (4) in a heat retentive compartment (5). The fuel line cooler (34) has an inlet (36) in communication with the source (14, 12) of cooling water for the engine (4), and has an outlet (38) for discharging water. The fuel line cooler (34) is cooled by sea water during running of the engine (4). Upon turn off of the engine (4), the cooled water in the fuel line cooler (34) is in heat transfer relation with the fuel and prevents vaporization and or spewing of the fuel.

Abstract: A fuel line cooler (34) is provided for a marine propulsion system (2) having a water cooled internal combustion engine (4) in a heat retentive compartment (5). The fuel line cooler (34) has an inlet (36) in communication with the source (14, 12) of cooling water for the engine (4), and has an outlet (38) for discharging water. The fuel line cooler (34) is cooled by sea water during running of the engine (4). Upon turn off of the engine (4), the cooled water in the fuel line cooler (34) is in heat transfer relation with the fuel and prevents vaporization and or spewing of the fuel.

Abstract: A fuel line cooler (34) is provided for a marine propulsion system (2) having a water cooled internal combustion engine (4) in a heat retentive compartment (5). The fuel line cooler (34) has an inlet (36) in communication with the source (14, 12) of cooling water for the engine (4), and has an outlet (38) for discharging water. The fuel line cooler (34) is cooled by sea water during running of the engine (4). Upon turn off of the engine (4), the cooled water in the fuel line cooler (34) is in heat transfer relation with the fuel and prevents vaporization and or spewing of the fuel.