Engine with low mounted cyclonic air filter assembly

An internal combustion engine comprising:

• an engine block including a cylinder having a cylinder axis;
• a piston positioned within the cylinder and configured to reciprocate along the cylinder axis;
• a crankshaft configured to rotate about a crankshaft axis;
• an air-fuel mixing device configured to provide an air-fuel mixture to the cylinder;
• an air filter positioned entirely below the air-fuel mixing device;
• and
• a duct coupling the air filter to the air-fuel mixing device and configured to provide air filtered by the air filter to the air-fuel mixing device.

An air filter assembly configured to provide filtered air to an engine, comprising:

• a housing comprising a base and a cap at least partially defining an interior volume of the housing, wherein the cap includes a debris outlet configured to allow debris and air to exit the housing and a channel formed on an interior cap surface, the channel configured to direct air and debris toward the debris outlet;
• a filter element positioned within the interior volume comprising a first end portion, a second end portion, and filter media extending between the first end portion and the second end portion, wherein the filter element divides the interior volume into a filtered volume and an unfiltered volume;
• a gap between the filter element and the housing configured to allow air to flow between the filter element and the housing;
• an air intake formed in the base and configured to allow air to flow into the housing;
• a filtered air outlet formed in the base and in fluid communication with the filtered volume of the filter element, wherein the filtered air outlet is fluidly coupled to an air-fuel mixing device to allow filtered air to exit the housing.