How to Clean Ct90 Motorcycle Carburetors

CT90 Carburetor

Carburetors on CT90 motorcycles tend to become full of sludge and other contaminants. It is important to be able to easily and effectively clean these carburetors and get them back up to par. The process is actually quite simple and requires only common tools.

Things You'll Need

• Quick-connect hose clamps
• Phillips screwdriver
• Soapy water
• Clean rags
• Air compressor with pointed blower tip

Instructions

1. Remove the carburetor from the motorcycle, and clamp any hoses running from the motorcycle's gas tank using standard quick-connect hose clamps. This will keep all the gas from leaking out of your tank.

2. Remove the top of the carburetor by loosening and removing its mounting bolts using a Phillips screwdriver. Gently pull the top away from the rest of the carburetor assembly, being sure to keep the seal sticking to the carburetor lid.

3. Dump the contents of the carburetor in a bucket or other container to be disposed of properly in accordance with local law. Shake out as much of the sludge in the carburetor as possible.

4. Soak and wipe the insides of the carburetor using a clean rag and soapy water. Run plenty of the water through the carburetor, trying to wash it out as completely as possible.

5. Use an air compressor to effectively blow out all the valves in the carburetor. Small blower tips work the best for this task. By simply acquiring a good seal around the valves, you can easily blow out all the sludge and other contaminants out of the carburetor.

6. Rinse the entire carburetor assembly out with a hose. Be sure to remove all leftover soap and cleaner residue.

7. Set the carburetor in a dry, clean place, to dry in the sun. Allow it to dry for two to three hours before continuing.

8. Carefully place the top back on the carburetor, making sure to align the seal as perfectly as possible. Reattach and tighten the carburetor's mounting bolts with a Phillips screwdriver.

Tips & Warnings

• Always stay aware of pinch points when working around movable motorcycle parts.