DIY - Rebuild a Harley Davidson Carburetor

If your Harley is not running the way it should, itone.
might be time to rebuild the carburetor. The fuel toRemove the enrichment plunger nut and spring from
run the Harley runs through the carburetor, mixingthe carburetor. Check the tip of the plunger for wear.
with the right amount of air, leaving sediment andTake the screws out of the bowl of the carburetor.
particles behind gumming up the inner works of theDo not remove the cap.
carburetor. Once the particles are in the carburetor,Remove the float pin screw. Locate and remove the
the bike will not perform as it should. It will runfloat pin, float and needle. Replace if worn with the
sluggish and possibly not even start. A rebuild kit fornew parts in the rebuild kit.
the carburetor can be purchased at most motorcycleTake the seat from the bottom of the carburetor
part supply stores. The process of rebuilding abowl. Install the new seat that is in the rebuild kit.
carburetor is not too difficult. Keep the work areaCheck the ejector nozzle for kinks or wear. Remove
and the carburetor clean while rebuilding. Clean partsthe old O-ring and install the new nozzle O-ring that is
as they are removed and installed and reinstalled inin the rebuild kit.
the carburetor.Clean and check the float for holes. Install a new
It is a good idea to get the things you will need inneedle. Place the entire unit back into the bowl. Move
place before starting this project. The basic toolsall the parts to be sure they move easily.
needed for rebuilding a carburetor are a screwdriver,Turn the bowl over and take out the screws that
the owners manual for your bike and the rebuild kitheld the cap in place. Take the balls and O-rings out
for your carburetor.of the casting.
Remove the idle mixture screw. Count the turns itReplace the ball checks, seats, spring and diaphragm
takes to remove the screw, make a note of howwith the new ones supplied in the rebuild kit.
many turns it took. Check the throttle plate for wear.Replace the pump shaft and boot. Install the new
Check the plugs in the body of the carburetor forbowl gasket and secure with the provided screws.
signs of leaking. If there are signs that they areReinstall the cables before bolting the carburetor
leaking, replace the plugs. There should be no lightback on the intake manifold.
showing when the carburetor is closed. Replace ifPosition the carburetor with the backing plate and
necessary.breather assembly and bolt back together.
Clean the idle mixture screw and mark it with aReplace the idle screw, turning the same number of
marker just to the tapered part. Replace the screwturns it took to take it out. Start the bike and check
by screwing it completely into the carburetor. Nowthe cables. Adjust the idle screw, if necessary, for
remove the screw and check to see if any of thethe proper idle. Take the bike for a test ride to
marker has been rubbed off. If it has, use the newinsure all is running smooth.
idle mixture screw from the kit and discard the old