Two Stroke Engine Carburetor Rebuild

Step 1

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The first step is to remove the carburetor from the engine.  First clean around the carburetor with compressed air or brush to remove any debris that may fall into the engine.  The carb is normally held onto the engine with either nuts or bolts depending on the make or model of the engine.  You will have to remove cowlings, the air filter housing, and disconnect and remove the fuel tank to get at the carburetor,  Also be careful when removing the carb from the engine as there is on some engines, a gasket between the carb and the engine itself, and this gasket might be become stuck to the engine and carb, almost act like a glue.  This gasket does not come with the carb kit and if you damage it while removing the carb you will have to get a new one from where you purchased the carb kit.  You can use a utility knife or similar flat tool to help you scrape along between the carb and engine to separate the two if they are stuck together.  Try and separate the carb from the gasket and leave the gasket on the engine.  If the gasket does not get too damaged you can reuse it.  The engine we are working on here did have a gasket we are talking about, and when I removed the carb from the engine, the gasket stuck to the carburetor.  I carefully removed it because when the carb is immersed in cleaning solvent, the gasket could be damaged.  The solvent will remove the oils that have been absorbed into the gasket and therefore making the gasket brittle and crack may form and create air leaks into the engine. 

There will be some numbers and letters stamped somewhere on the carb.  It is the carb model identification code, write all of them down and go to a small engine parts supplier and give them the code and they will get you the carb kit for your carb.  Better yet, take the whole carb with you so the supplier can get the code right off of it, this avoids problems if the code is hard to read or you make an error in writing it down (i.e.. number zero instead of the letter O, number one instead of the letter l). 

Also See Two Stroke Oil Fuel Mixture Ratio and Two Stroke Engine Troubleshooting or Carburetor Troubleshooting Chart.

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