Description
Fit：Big Twin and 1986 2003 Sportster 1984 1999 Harley-Davidson ster Models
Fit:1957-2005 Harley-Davidson Softail
Fit:Harley-Davidson1991-2006 Sportster 883
Super E has a 17/8" (47.6mm) bore and 19/16" (39 .6mm) venturi.
1- Verify carburetor is set to stock settings:
a- Idle mixture screw
b- Idle speed screw, ½ turn clockwise from
engagement point.
c- Accelerator adjustment screw, two turns counter-clockwise from seated.
2- Start bike, bring to operating temperature.
3- Set idle speed adjusting screw, clockwise to increase rpm, counter-clockwise to decrease rpm. Idle rpm range should be 950 to 1050 rpms.
4- Adjust idle mixture by turning idle mixture screw slowly clockwise until the engine runs poorly. Note position. Slowly turn the screw counter-clockwise until it starts to stumble. Note position. Set the idle mixture screw halfway between the positions, or at the strongest idle. Inconsistent idle may indicate a manifold leak.
5- With engine idling, turn accelerator adjustment screw clockwise until it lightly seats. Snap throttle open— engine should stumble. Turn screw counter-clockwise or ½ of a turn at a time, until engine responds to throttle twist with smooth, quick response.
6- Ride motorcycle in various rpm ranges, and then try to maintain a consistent 40- to 50-mph. If the engine has a flat spot, or is popping/sneezing in the air cleaner, it can indicate a lean condition. If you notice stumbling or sputtering, it can indicate a rich condition.
7- Low rpm operation is controlled by the intermediate jet If sneezing or popping is experienced below approximately 3000 rpm’s the intermediate jet must be replaced with a larger sized (richer) jet. If the engine does not run smoothly at low speeds, fouls plugs, blows black smoke or gets bad gas mileage a smaller (leaner) intermediate jet needs to be installed. Always readjust the idle mixture and idle speed screws after making a jet change.
