They mean running the motor without an air cleaner. Some people used to run open carbs on street bikes but even if nothing big gets in there, engine wear is accelerated.
This is due to EPA requirements making all enigines vent the crankcase gases through the carburetor to be burned. Unfortunatly, Harley Davidson designed the Sportster vent configuration through the heads and DOWN (gravity) into the carburetor. This setup allows raw oil to be pushed into the air cleaner at times (especially when the oil is hot and thin) and leak out the air cleaner and onto the bike, etc.
Choke Cleaner
On a post 1995 stock Buell, no, a Sportster air filter will not fit. On the older tube frame Buells, you may adapt an air cleaner system that will accept a stock Sportster air filter.
Yes and on all the linkage.
use a can of carburater cleaner
Carburetor cleaner is a chemical spray which is used to remove buildup and deposits from carburetors. It is designed to safely clean without damaging the surface.
After removing an EGR valve from the vehicle, the valve can be flushed with carburetor cleaner. If the valve still sticks then a replacement will be needed.
To repair a Poulan trimmer carburetor, start by removing the carburetor from the trimmer and disassembling it carefully. Clean all parts with carburetor cleaner to remove dirt and debris, paying special attention to jets and passages. Replace any damaged components, such as gaskets or diaphragms, and reassemble the carburetor. Finally, reinstall it on the trimmer, ensuring all connections are secure, and test the trimmer for proper operation.
Clean the injectors
yes,it is the same.
I like to spray carb cleaner on a lint free rag to clean out most of the intake first but you can spray some inside just try to get most of it out if you sprayed alot inside wait a few minutes so it can evaporate before you start your car just incase it ignites.OTMAN Carburetor cleaner is designed to remove heavy varnish and gunk from the inside and outside of a vehicle's carburetor. If the carburetor is not cleaned periodically, it will begin to affect the vehicle's mileage and performance. The carb should be cleaned a couple of times a year to prevent buildup and keep the engine running smooth.Remove the air cleaner unit from the engine by unscrewing the wing nut. You might need pliers to turn the wing nut if it is very tight.Vacuum off the top of the engine area to prevent dirt and debris from being sucked into the engine while the air cleaner is not in place.Spray the entire carburetor inside and out with carburetor cleaner to loosen the gunk and varnish. Use shop rags to wipe up any heavy grease and gunk loosened by the carb cleaner.Start the vehicle. With the vehicle running, spray carburetor cleaner down the throat of the carburetor and around the outside. The engine will pick up a bit as the vehicle burns the carburetor cleaner. Wait a few minutes and shut off the engine.Spray the outside and inside of the carburetor again heavily. Start the vehicle again and spray more carb cleaner around the outside and inside while the engine is running.Spray the entire air cleaner inside and out with carburetor cleaner. Wipe the air cleaner dry with shop towels. Install a new air filter element and re-install the air cleaner unit onto the carburetor.
Just spray some carburetor cleaner into the carburetor and then let the car idle for a bit. In addition to the above answer add a can of Seafoam or Techron fuel system cleaner to a full tank of fuel once each year.