By 1937, all Harley-Davidson flathead engines were Outfitted with dry-sump oil recirculation units much like the 1 launched inside the "Knucklehead" OHV engine. six. Harley-Davidson reserves the appropriate to amend the conditions with the Marketing or to withdraw the Promotion Anytime if circumstances further than its Regulate make this https://harley-davidson90111.getblogs.net/63713642/not-known-details-about-harley-davidson