Question about 2000 Harley Davidson XL 1200 C Sportster Custom
Your Sportster is an air cooled engine. If it's overheating, you got some serious problems.
First, check your oil level and make sure you've got plenty of oil in the bike. With the engine running and on the side stand, pull the oil fill plug and look into the tank. Shine a flashlight in there and make sure your oil is flowing. You should see the oil flowing back into the tank.
If that's alright, your carburator or fuel injection is running too lean. A too lean mixture will cause the engine spit back through the intake and run too hot.
If it's a carburated bike, you need to go up on step on the slow speed jet and raise the needle about 0.020" to richen the low speed and mid-range mixture. You may even need to richen the main jet up one step.
If the bike is fuel injected, you need to take it to a dealer and have them make the adjustments on the fuel system. The fuel to air ratio should be no higher than 14 to 1, preferrably 13.5:1. Anyone with a exhaust gas analyzer can check this for you. A dyno tune would be a good investment.
Posted on May 09, 2010
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Posted on Jan 02, 2017
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