Question about 2004 Harley Davidson XL 883C Sportster Custom

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Need diagram of carb for 2001 883c sportster to change jets in carb.

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No offense, but if you dont know where and how to change the jets on the carb, then you are better off leaving it to someone that knows those carbs. Rejetting a carb can be a tricky thing, and can also lead to a carb that junk if you don't know exactly what your doing.

Take it to a shop they will change them cheap.

Posted on Aug 01, 2010

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No one ever learned anything by handing the problem off to someone else.. the best way to learn is by getting in there and figuring it out.. you must be a mechanic who lives off the idiots who can't or dont care to do the work themselves..

Posted on Aug 24, 2010


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The airbox/air filter assembly holds the carb in place. Once the air cleaner assembly is removed, you can pull the carb out of the rubber seal that connects it to the intake manifold. There are four screws at the bottom of the carb (float bowl) that you will have to remove to get to the jets. Good luck!

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I have a 2003 Sportster and after I have let it sit for a little bit warming up and then take off I can not push the choke in or it dies.

First thing I would check is your idle jet. Its the smallest one, if you have a stock carb, and most aftermarket carbs, once you take off the float bowl, you will have to locate a small hole that will fit a small flathead screwdriver. This is normally your idle jet, unscrew it, and take it out. Look thru it you should see a small bit of light. Eighter way I would blow out the jet with some carb cleaner, and heck while your at it might as well remove the main jet and do the same.

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Aug 22, 2011 | 2000 Harley Davidson XL 1200 C Sportster...

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98 Sportster 883. starts & w/ choke, won't take throttle or choke off w/o stalling. Bike sat for a long time (years). Used Gumout to clean carb b4 pulling tank, cleaning & put fresh fuel -...

No, nothing else to check. You need to completely disassemble the carb and clean it out. When gasoline left in the float bowl evaporated, it left behind the gummy additives that the refinery puts in the gasoline. This mess has clogged the jets and small passageways in the carb. The reason it runs with the "choke" out is that it is not a real "choke" but rather an "enricher circuit". It has it's own air passageway and fuel metering "jet" in the float bowl.

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Aug 01, 2011 | 1993 Harley Davidson XLH Sportster 883

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Poping in crub

I think you're talking about "popping in carb". This is because your carb is jetted too lean from the factory. They have to do this to meet EPA regulations. You need to change the slow speed jet in your carb from a #42 jet to a #45 jet. Making this change will usually require that you drill out the "anti-tamper" plug that covers the idle mixture adjustment screw so that the idle mixture can be adjusted for the new jet.

Also, you need to remove the slide from the carb and remove the needle. With the needle out, slide a 3mm flat washer on the needle from the "long" side. The small flat washer is approximately 0.020 to 0.023" thick. This will raise the needle by this much slightly enriching the mid-range mixture. You can use a little grease to hold the washer on the needle while you reinstall it.

This is a relatively complicated job in that it requires the removal of the carb from the engine and disassembly of the carburetor. It is also a job that I do not recommend for the amateur mechanic.

Good Luck

Nov 09, 2010 | 2003 Harley Davidson XL 1200 C Sportster...

1 Answer

My harley 2004 sportster XL883 is starting, but it is backfiring alot and when i try to ride it has no power.

Is it backfiring through carb or exhaust? Has it been sitting for any period of time? We suspect carb issues. Try cleaning carb, pay special attention to the pilot jet and main jet circuits. Clean with spray carb cleaner and air, do not use wire. Make sure needle and seat are clean.

Oct 31, 2010 | 2004 Harley Davidson XL 883 Sportster

1 Answer

I bought a 2005 Sportster 883 already fitted with SE silencers?? but still using the standard air filter- should the carb have been re-jetted and would it need jetting again if a SE filter is installed?

I would say "Yes" as Harley has been shipping their bike jetted as lean as possible to satisfy the EPA or other regulatory agencies in the country of destination. Anything you change anything on a motorcycle, you effect the entire system. Since the SE free flow mufflers were added, the bike could probably benefit from a little richer jet. If you change the air filter to a less restrictive one, that will probably lean the mixture even more.

One trick that I've been doing for years is to remove the carb and drill out the anti-tamper plug so that I can get to the idle mixture screw. Then go up one size on the slow jet. If it's a #42, go up to a #45. Then, take the needle out of the slide and install a 3mm flat washer that is about 0.020" thick (0.5mm) onto the long end of the needle and reinstall it. This will RAISE the needle just a bit to richen up the midrange just a bit. Put the carb back on and adjust the idle mixture for the highest smoothest idle and reset the idle speed. Works like a charm. I'd also replace the carb seal where it goes into the the intake to prevent vacuum leaks.

Good Luck

Sep 06, 2010 | 2005 Harley Davidson XL 883L Sportster

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Aug 19, 2009 | 2000 Harley Davidson XL 1200 C Sportster...

1 Answer

Acceleration problem

If you are not running an open or free flowing exhaust go back to the stock size jets but use the DynoJet parts instead of the stock.
DJ jets tend to run bigger than oem jets

Jan 28, 2009 | 2005 Harley Davidson XL 1200 C Sportster...

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