Beyond proper jetting, fine tuning a Harley CV carburetor is the key to improved performance. As described in the Harley Performance carburetor tuning article, adjustment of the air/idle mixture screw will yield far greater results than simply jetting alone.

The biggest obstacle to tuning your carburetor's mixture setting has always been accessibility. The mixture screw is located under the carburetor and requires the tuner to blindly reach under and behind the carburetor with a small screw driver to perform this procedure. This task takes a small amount of dexterity to locate the recessed screw which cannot be seen, while avoiding contact with hot portions of the engine.

The solution is the EZ-Just mixture screw, a custom air/idle mixture screw incorporating an easy thumb screw head.

EZ-Just Mixture Screw

Adjust your own idle mixture without fumbling with screwdrivers or burning your hands. Compatible with all Harley CV style carburetors (1989-2006) and replaces the stock mixture screw.

• Fine tunes your Harley's carburetor mixture with ease
• Simple to install, no special tools required
• Mixture tuning eliminates off-idle stumble and "coughs"
• Allows instant adjustment when changing exhausts or air cleaners
• Never fumble with a screw driver or burn your hands again
• Easy to follow installation and tuning instructions

Also available as part of the Deluxe Stage 1 Tuners Kit