Carburetor Rebuild Kit
Slow start-up, a stalling or hesitating ignition, engine flooding, and a sudden increase in gas consumption could indicate a faulty carburetor. If you've ruled out other problems and you've determined that a malfunctioning carb is the culprit, you'll have to invest in a rebuild kit. Now if you're an amateur mechanic, don't worry. Installing a carburetor rebuild kit isn't rocket science. You just need to equip yourself with the following tools and use the steps below as a guide:
- Carb cleaner
- Microfiber towel
- Rags or can
- Rubber gloves
Step 1: Remove the old carburetor.
Start by uninstalling the air cleaner and disconnecting the vacuum and fuel lines that are attached to the carb. Using rags or a can, soak or catch the gasoline that will spill out of the lines as you disconnect them from the assembly. If you're using rags to wipe off the spilled gasoline, don't forget to hang them outside to dry. Keep in mind that gasoline fumes can get stinky and gas-soaked rags are flammable. Then remove the throttle connections, taking note of the tube routes. Lift off the carburetor from the intake manifold as you take note of its exact position and the way the spacers and gaskets are installed. After removing the carb, don't forget to cover the manifold with a clean towel to prevent small components from falling into the manifold.
Step 2: Disassemble the old carb.
Place the old carburetor on your workbench with a clean towel underneath. Take a picture of the carb before, during, and after installation so you'll know which part goes where. Also take note of the exact position of every component you remove from the carb. Keep in mind that certain parts look the same once they're removed from the carburetor.
Step 3: Clean the metal parts.
All the metal parts in the old carb that you're planning to reuse with the rebuild kit should be cleaned with a carb cleaner to get rid of grime, dirt, and gasoline residue. When dealing with grimy orifices or jets, use a piece of brass or copper wire dipped in carb cleaner. Keep on scraping off traces of grime until the metal surfaces are thoroughly cleaned.
Step 4: Check for leaks from the float.
Put the float inside a container with hot water. If you see bubbles, then it means there is a leak. Make sure to dip every part of the float in hot water to check for bubbles and zero in on the source of the leak. A leaking float should be replaced.
Step 5: Assemble the carburetor rebuild kit.
A carburetor rebuild kit contains replacement parts such as gaskets and valves. Before you could install these components, take a look at your notes and photographs of the old carb while you were disassembling it. Make sure the parts in the kit perfectly match the parts you've removed. Follow the instructions included in the rebuild kit to a T to ensure a perfect fit. Locating one-way valves, internal passages, and jets can get confusing, so use your notes and photographs as supplementary guides.
Step 6: Install the rebuilt carburetor.
Once you've assembled the carburetor rebuild kit, reattach it to the intake manifold by tightening the screws in a pattern that allows for an even distribution of pressure. After screwing or bolting the newly rebuilt carb in place, start the engine to see if the carburetor rebuild kit is properly installed.