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5 Reasons Your Harley-Davidson Motorcycle May Be BackfiringThe Harley you ride might require a replacement ... Keep up with maintaining the fuel filter and this will rarely be an issue. Spark plugs, as the name suggests, generate a spark that ignites ...
Harley-Davidson engines contain two pistons, but they do not fire at fixed intervals. There is also only one pin for both pistons and its spark plugs are positioned at a 45-degree angle.
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