How do you adjust a Harley carburetor?
Locate the idle mixture screw on the bottom outlet side of the carburetor, in a passageway next to the float bowl. Turning the idle mixture screw in, or clockwise, will lean the idle mixture and turning it out, or counterclockwise, will enrich it.
Why does my Harley backfire on deceleration?
Backfire on deceleration or acceleration on a Harley Davidson is due to the burning of excess fuel in the carburetor’s intake port. A lean air or fuel mixture from the carburetor of a Harley Davidson results from drastic changes in the pressure. The extra air unbalances your engine leading to backfires.
Where is the carburetor on a Harley Davidson Sportster?
The carburetor is still connected to the fuel line on the left-hand side. Just remove the clamp holding the fuel line in place and pull the line off the petcock valve. It is also connected at the choke, which is removed with a 14mm wrench.
Is it time to clean a Harley Davidson Sportster?
Bikes were meant to be ridden and when they have sat for too long, the carb can quickly become gummed up. It’s time for a good cleaning. This article applies to the Harley Davidson Sportster.
What’s the best way to clean a Harley Davidson carburetor?
Some suggest to fill a bucket with carb cleaner to submerse the carburetor in it and leave it to soak overnight. Do this at your own discretion, as Harley Davidson does not recommend that for these CV carbs. Ensure that the diaphragm is in place and reassemble as well as reinstall any jets that you removed. Figure 14.
How do you remove air filter from Harley Davidson Sportster?
There are only a few bolts to remove. Use a Hex bit screwdriver to remove the two large bolts on the outside of the air filter housing. Use a Torx bit screwdriver to remove the three Torx screws that hold the mounting plate onto the air filter. Remove the air filter.
The carburetor is still connected to the fuel line on the left-hand side. Just remove the clamp holding the fuel line in place and pull the line off the petcock valve. It is also connected at the choke, which is removed with a 14mm wrench.
Bikes were meant to be ridden and when they have sat for too long, the carb can quickly become gummed up. It’s time for a good cleaning. This article applies to the Harley Davidson Sportster.
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.
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.