Air-cooled Engines

Model WMB

Model WMB

Model WMB — The dates of manufacture for these engines were from October 1938 to June 1957. This engine specification is 2/3 Horse Power, 2250 RPM, 1.54 Torque Ft. Lb., 49.4 BMEP, 2/3 Bore, 1-1/2 Stroke, 4.7 C. I. D. and 562.5 Piston Speed FT./Min. The block and some other parts of this engine were made of cast iron. This engine was built for heavy duty use such as a washing machine. Yes, this engine was used on a Maytag washing machine and the exhaust could be vented outside of the house during it use.

The air filter is an oil bath which was used to keep dust and other particles out of the
carburetor. These engines had a brass name plate on the air cover, which listed the model and serial number. This engine has an oil pump to lubricate the engine.

The fuel for this engine is sucked up through the copper tubing that is connected to carburetor and the tank outlet on the fuel tank. In the tank outlet is a small BB which enables some fuel to be left in the fuel line when the engine is shut off so that the engine can be started when needed.

Model U

Model U

Model U — The dates of manufacture for these engines were from September 1940 to September 1945. This engine specification is 1 Horse Power, 2300 RPM, 1.64 Torque Ft. Lb., 39.3 BMEP, 2 Bore, 2-Stroke, 6.3 C. I. D. and 1066.6 Piston Speed FT./Min. The block, head and sump were made of cast iron. This engine was for heavy-duty use during the 1940s.

The air filter is oil bath which was used to keep dust and other particles out of the carburetor. These engines had a brass name plate on the air cover which listed the model and serial number. This engine has an oil pump to lubricate of the engine.

The fuel for this engine is sucked up through the copper tubing that is connected to the carburetor and the tank outlet on the fuel tank. In the tank outlet is a small BB which enables some fuel to be left in the fuel line when the engine is shut off so that the engine can be cranked when needed.

Model Y

Model Y

Model Y — The dates of manufacture for these engines were from August 1931 to June 1939. This engine specification is 1/2 Horse Power, 1900 RPM, 1.38 Torque Ft. Lb., 23.4 BMEP, 2-1/4
Bore, 2-1/4, Stroke, 8.9 C. I. D. and 712.5 Piston Speed FT./Min. This engine’s block and other parts were made of cast iron which were built for heavy-duty industrial use. The block and some other parts of this engine were made of cast iron. This engine was built
for heavy-duty use such as washing machine. The engine could be cranked by pushing down on the lever arm with your foot. 

The fuel for this engine is sucked up through the copper tubing that is connected to the carburetor and the tank outlet on the fuel tank. In the tank outlet is a small BB which enables some fuel to be left in the fuel line when the engine is shut off so that the engine can be cranked when needed.

These engines had a brass name plate on the air cover which listed the model and serial number. This engine has an oil pump for lubrication of the engine.

The spark plug is D16, which is a large plug with a gap of .030. A hand crank is used to start this engine.

Model FI

Model FI

Model FI — The dates of manufacture for these engines were from December 1927 to January 1933. This engine specification is 3/4 Horse Power, 1900 RPM, 2.07 Torque Ft. Lb., 35.01 BMEP, 2-1/4 Bore, 2-1/4, Stroke, 8.9 C. I. D. and 712.5 Piston Speed FT./Min. This engine block, head
and sump were made of cast iron which could be used for heavy-duty use. The cast iron cylinder and air fins’ design enabled the engine to withstand the heat that was generated.
Also, this engine has two flywheels which help to keep the engine cool or from overheating. The air filter is connected to the carburetor beneath the gas tank. This engine is one of the first to have overhead valves, which are located on top of the engine’s head. 

The fuel is gravity-fed to the carburetor and it has a mechanical governor. These engines had a brass name plate on the air cover which listed the model and serial number. This engine has a oil pump for lubrication of the engine. The spark plug is D16, which is a large plug with a gap of .030. A hand crank is used to start this engine.