How do you adjust the idle on a 2006 Harley Davidson Sportster?
Turn the screw clockwise to increase idle speed and counterclockwise to decrease it. Your tachometer will give you the idle speed, but if your bike isn’t fitted with one, then play it by ear; if you go too low, the bike will either cut out or stumble when you twist the throttle, while too high and it will sound wrong.
Where to adjust the carburetor on a Harley Davidson?
Acquaint yourself with the adjustment screw location at the bottom rear of the carburetor prior to running the engine. You will need a small screw driver for adjusting the screw unless an EZ-Just has been installed. With the engine idling slow (no more than 900 rpm), turn the screw inward (clockwise) SLOWLY until the engine starts to stumble.
Why does my CV carburetor on my Harley not work?
Since then, all Harley-Davidson motorcycles make use of fuel injection. The CV carburetor may show signs of needing to be tuned. These signs include a drastic decrease in fuel economy, black smoke appearing from the exhaust, sluggish acceleration, the engine spitting back through the carburetor, or hesitating upon acceleration.
When to adjust the mixture on a Harley Davidson CV?
Anytime you rejet or change exhaust or air cleaner intake it is suggested to adjust the mixture. The mixture screw or EZ-Just is the key to proper tuning. These tuning steps apply to all Harley CV carbs from 1989 to present that use the CV 40mm style Harley Davidson carburetor but also apply to the CVK40 found on other models.
Are there any Harley Davidsons that still have carburetors?
Harley-Davidson no longer produces any models with carburetors. While innovation is seldom met with universal approval — chain- to belt-drive being a prime example — those who were skeptical of the phasing in of electronic fuel injection, or EFI, had at least one sound reason for disapproval: Faulty…
How do you adjust the CV carburetor on a Harley?
How to Adjust a Harley CV Carburetor. Turn idle mixture screw two turns out (counterclockwise) to an idle speed of 1,000 rpm. Adjust the screw 1/2 turn at a time. After each adjustment, reset the idle speed to 1,000 rpm. The maximum adjustment range is 1/2 to 3-1/2 turns.
How many turns does a carburetor need in a Harley Davidson?
If the engine responds quickly with a smooth blast and no backfiring through the carburetor, you have your idle mixture right. If backfiring occurs through the carburetor then adjust the idle mixture screw out another 1/8 turn. Normally, the mixture screw should only require 2 to 3 turns.
What makes the carburetor pop on a Harley Davidson?
One of the most common problems that customers complain about is the spit-cough-pop from the carburetor as a Harley goes from idle to ΒΌ throttle. This can occur on any model, any carburetor, but seems to happen most often with the stock CV Keihin carburetors used on the newer (90 up) Big Twins and Sportster models.
Can a CV Keihin carburetor cause a Harley to stall?
This can occur on any model, any carburetor, but seems to happen most often with the stock CV Keihin carburetors used on the newer (90 up) Big Twins and Sportster models. This condition is not only annoying, but can cause the Harley to stall dangerously at stoplights, and can damage intake seals.