A carburetor is a simplistic and old-school way of delivering air and fuel to an internal combustion engine. In its most basic form, no electronics are required. All you need is a throttle cable, some ...

Harley-Davidson has used the 40mm Keihin constant velocity (CV) carburetor since 1988 on Sportsters and introduced them in 1990 on the Big Twins. The 1988 model differed from the 1989-and-later carbs ...