Tecumseh carburetor adjusting the main jet


Someone please the process of adjusting the main jet on the Tecumseh carburetor. I have tried to adjust it but I think I am lacking somewhere. So, please guide me accordingly.



Hi Greg,

It is very important to fine-tune the main jet properly as it adjusts the required amount of the fuel entering an airflow. High amount of the fuel can cause it to start or run rough & rich probably with smoke coming directly from a muffler. On the other hand, when fuel is not sufficient then, it will run lean & rough. Therefore, a perfect adjustment position of the main jet somewhere between lean & rich is considered as a smooth & properly running engine. Coming to your main point, you can adjust the main jet on your own therefore, it is better to call a carburetor engineer.