Question about 2000 Harley Davidson FXD Dyna Super Glide

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What is the float level setting on a hd keihin cv carb? HD stock #27421-99a

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You'll have to contact me directly for that information. The reason is that the float level is not set in the more conventional manner like other carbs. The float level is set to0.413 - 0.453' from the "bottom" of the float to the lower face of the carb body with the carb tilted at an angle of 15 - 20°. A picture is worth a thousand words in this case. For a picture, contact me directly at wd4ity at

Good Luck

Posted on May 09, 2010

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What make is the stock carb on a 2002 harley dyna super glide

It is an H-D Keihin CV carb. If you want a part number you can get that from an H-D dealer parts department.

Apr 19, 2013 | 2002 Harley Davidson FXD Dyna Super Glide

1 Answer

I have a 1998 harley sporters, runs only when the choke is pulled out all the way and when I try to back it off, it stalls. I had the carburator cleaned, but it still does it..Can somebody offer me a...

If your bike was allowed to sit up for an extended period of time, the gasoline in the float bowl evaporated and left behind this gummy mess. It has plugged up the jets and possibly the small fuel passageways in the carb. The carb must be completely disassembled and soaked in a professional grade carburetor cleaning solution. Then, compressed air must be used to check all the passageways to be sure they are open. No fuel is getting into the main venturi of the carb for some reason. The enricher circuit has it's own venturi and pulls fuel directly from the float bowl. This why it will run using the enricher and not run when it's turned off. I'd suggest that you take your bike to someone that knows what they are doing with a carburetor. If whoever did the carb did it right, it should run without having to use the choke. You didn't say whether your carb was the original stock carb or an aftermarket unit. If your carb is the stock Keihin CV carb and the "anti-tamper" plug has been removed from the idle mixture screw, set the screw at 3 turns off the bottom to start with and then fine tune the idle when the engine warms up. The idle mixture and idle speed are the ONLY things you can set on any carb from the outside. The fuel metering is controlled by the jets inside of the carb.

Good Luck

Aug 21, 2011 | 2007 Harley Davidson XL1200R Sportster...

2 Answers

Hd carb idles fine will not advance throttle bogs down

You didn't say what year or model bike it is but I'm going to assume that it has the stock Keihin CV carburetor on it. You need to check two things, the accelerator pump and the slide vacuum diaphragm.

To check these, first take the air filter off but leave the backing plate on the carb. With the engine OFF, crank the throttle wide open while looking into the mouth of the carb. You'll see a brass nozzle just inside the mouth of the carb. When you crank the throttle open, you should see a squirt of fuel come out of this nozzle. If not, you need to replace the diaphragm in the accelerator pump that is on the bottom of the carb float bowl.

If that is working correctly, start the engine and gently rev the engine while watching the slide inside the carb. DO NOT GET YOUR FACE TOO CLOSE TO THE CARB IN THE EVENT THE ENGINE SPITS BACK THROUGH THE CARB. The slide should be moving up and down. If not, the vacuum diaphragm that operates the slide may have a hole in it. You must take the carb off the engine and take the top plate off to get the slide and diaphragm out.

One other thing. If the bike has been sitting for an extended period of time, the jets may be clogged inside of the carb. This will require a complete disassembly of the carb to clean out the jets and the small fuel and air passageways.

Good Luck

Jul 27, 2011 | Harley Davidson FLSTF Fat boy Motorcycles

2 Answers

I'm getting gas to the carberator, but not getting gas in the carb.

If you are getting fuel TO the carb but none IN the carb, your float is probably stuck. The float is supposed to lower in the float bowl when the fuel level is too low opening the needle and seat which allows fuel to fill the float bowl. On the original Keihin CV carb that is on your engine this is a very rare occurance. So rare in fact that I would suspect something other than what you have stated. I would check the vacuum operated petcock to make sure that fuel is flowing through it. Disconnect the fuel line at the carb and spin the engine over. If fuel flows freely from the hose, the petcock is working fine. If not, you need to remove the petcock from the tank and replace the vacuum diaphragm in the petcock. If you are getting a full fuel flow, I would suggest the you remove the carb from the engine and go though the carb completely. This is not a job for a beginner. There are particular setting involved in the carb when replacing the float needle that must be set in a certain way. It's best to have an experienced mechanic do this job.

Good Luck

Jul 08, 2011 | Harley Davidson FXDWG Dyna Wide Glide...

1 Answer

I have a 2003 superglide and the carb keeps building up with fuel and runs really rich and u can smell fuel .. any help

It sounds like you have a bad needle in the carb allowing the float bowl to overfill. It depends on what type of carb is on the engine as well. If it's the original Keihin CV carb, you'll have to remove the carburetor from the engine and remove the float bowl, the float, and the needle. Replace the needle and reset the float height is necessary. There is a special way of setting the float height on this carb. It must be set with the carbuetor body positioned at an angle. If you'll contact me directly at , I'll send you a picture of how to set the float level on the Keihin CV. If your bike has a different type of carburetor, let me know this and I'll try to help you with that as well. Don't forget to tell me what you need.

Good Luck

Jul 03, 2011 | 2003 Harley Davidson FXD Dyna Super Glide

1 Answer

Need float specs fuel leeks out overflow on carb. hanging should it be right below the gasget at the toe or the seem?

I would suspect that your problem is something other than the float setting. If your carb has been running properly until recently, there may be trash in the needle and seat. Float settings don't just change by themselves. Once they're set, they stay that way until someone changes it. I'd be glad to send you the float settings but you didn't tell me what kind of carb you're running on the bike. Harley riders are noted for changing the type of carburetor they run on their bike. If you're running the stock Keihin carb, the float level has to be set with the carb on an angle. To illustrate this, I'd have to send you a picture. I'd be glad to do so if you're contact me directly as this forum only allows a file size of 150Kb or smaller. Contact me at and I'll send you a picture of how to set the float level of the Keihin CV. If you are running a different type of carb, let me know and I'll send you information on that one as well if I have it.

Good Luck

Mar 20, 2011 | Harley Davidson XL 1200 C Sportster Custom...

1 Answer

I own a 1990 xj600 which i have just rebuilt. i have stripped and cleaned carbs. now it is running so rich it packs in after 5 mins and i have to clean plugs to get it going again

Go get a set of spark plugs one heat range hotter than stock. Also get the stock main jets for your bike. Check your pilot jet size and be sure it is also stock.Set the main jet needle on the 4th notch from the top. Get a float level gage and set the float level. Be sure the floats DO float. then can get gas inside if cracked or rusted fittings. Your bike has a CV carb on the right and a standard carb on the left. I have to admit, I have not seen that set up before. I am not a fan of CV carbs. Go to the site below where you can see a parts diagram for your specific bike. You will select the actual brand, year, model, etc., once you go to the site. Part numbers and prices are also shown. You can order parts from this site. In the event no price is shown on a particular part, the part is not in stock.

I don't get paid for my answers. I am only trying to help. I do take pride in them. So if you will, > > > > A “very helpful” rating for this answer? Thanks!

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