Harley-Davidson motorcycles do have valves in their engines. Like most internal combustion engines, Harley-Davidson engines rely on valves to control the intake of air-fuel mixture and the exhaust gases. The valves open and close at specific intervals to allow the fuel-air mixture into the combustion chamber and to expel the exhaust gases.
Harley-Davidson engines typically use an overhead valve (OHV) design, also known as a pushrod V-twin engine. This design places the valves in the cylinder heads and utilizes pushrods and rocker arms to operate the valves. The pushrods transfer the motion from the camshaft to the rocker arms, which then open and close the valves.
When it comes to cleaning the valves, regular maintenance procedures apply, similar to other motorcycles. Over time, carbon deposits and other contaminants may accumulate on the valves, which can affect engine performance. Valve cleaning typically involves removing the cylinder heads and accessing the valves for cleaning or, if necessary, valve seat and valve guide maintenance.
Cleaning the valves usually requires specialized tools and expertise. It's recommended to consult the Harley-Davidson service manual or seek professional assistance at an authorized Harley-Davidson service center or a qualified mechanic for valve cleaning and maintenance. They will have the necessary knowledge and tools to ensure proper cleaning without causing damage to the valves or other engine components.
In summary, Harley-Davidson motorcycles do have valves, and they are cleaned through specific maintenance procedures that involve accessing the valves within the engine. Regular maintenance and following the manufacturer's guidelines are essential for keeping the valves and the engine in good working condition.