Makes adjustment to your Air/Fuel mixture without the use of tools. Trying to adjust a D-shaped mix screw underneath and behind your carb while tuning your bike requires some serious yoga techniques and hands of asbestos. With these long-handled mix screws all you need is a riding glove and you can reach underneath the carb and make a simple adjustment to you Air/Fuel mixture. The handle is numbered so you can count your turns in an out for more precise tuning.
For dual carbs, when the mix screw on the throttle wheel side bottoms out on the throttle wheel, that is your zero point. Start backing out the screw from there.
When changing them out, be sure to remove the stock spring, metal O-ring and rubber O-ring and replace them with the new ones supplied with the long handled mix screw. New screws come with a new spring and washers.
You will need to pick up the D-shaped bit to remove the stock mix screw! You can find it by clicking HERE.
If you don't use the D-Bit you run the risk of rounding off the edges of the stock mix screw and that's really difficult to get out!