Carburetor For Tohatsu Outboard Engines

Carburetor For Tohatsu Outboard Engines

This Carburetor fits Tohatsu 20HP MFS20C and MFS20D 4-stroke outboard engines made since 2008 (excluding remote steering models)

The main jet lies at the bottom of the carburetor float bowl.carburetor for tohatsu outboard carburetor for tohatsu outboard This is a common place for water to settle and corrode the metal, especially when there are dissimilar metals involved, as in this case. When the water corrodes and fuses to the brass, it is very hard to unscrew it. Will soaked the jet in Marykate On & Off Hull & Bottom Cleaner to see if it would dissolve the corrosion and allow him to unscrew it. It didn’t, but it did help to break down the clogging and free up the jet.

After the main jet was removed, Will poured the remaining fuel from the carburetor into a jar.carburetor for tohatsu outboard He also drained the carburetor by opening up the drain screw, seen at the top of the photo above. This allows the gas to drip out of the carburetor and back into the fuel tank. This step will remove any gasoline that is contaminated with ethanol and could cause the engine to not start.

He opened up the air filter and cleaned it as well. He also drained and cleaned the carburetor bowl. Carbs need to be drained and emptied regularly, or else the fuel will gum up. Unlike an EFI engine, where the fuel is kept isolated from oxygen when it is in standby, a carburetor needs to be opened and cleaned to keep it running smoothly.

As he worked, Will explained the difference between carburetors and EFI. He emphasized that the carburetor can be opened and easily cleaned, but EFI is much more complex and will require specialized tools to get it open.

To finish things up, Will reamed out the holes in the main nozzle using his Stahlwille jet reamer set with pin vise. He carefully picked the right size reamer as he wanted to clean out the holes, not make them bigger. He also dipped the now shiny main jet in carb cleaner to rinse away any debris still left on it. Will was now ready to reinstall the carburetor and put everything back together. This is a simple process, but it takes some time to do. The process of removing, cleaning and reinserting a carburetor is relatively straightforward as long as you take your time, have plenty of photographs to refer to throughout the process, and have the correct tools and spares at hand.

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