Question about 2003 Harley Davidson XLH 883 Sportster
Usually, if you go up one size on the slow jet and readjust the idle mixture this solves the problem. I think you bike came equipped with a #42 slow jet. Go up to a #45, the next step richer. If you have not drilled and removed the "anti-tamper plug" that covers the idle mixture adjusting screw, do so. Be careful not to damage the screw as they are not available seperately from Harley. This will enrichen the low speed mixture just a bit.
You can also remove the needle from the slide and install a 3 mm flat washer that is about 0.020" thick on the needle to raise it up just a bit to enrichen the midrange just a bit.
Also, check your accelerator pump for proper operation.
Posted on Jul 04, 2010
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Posted on Jan 02, 2017
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