Which way does the needle go in a carburetor?
The needle jet—or nozzle as it’s sometimes called—is located in between the main jet and the carburetors venturi. Fuel comes through the main jet and into the needle jet. So the main jet does affect the needle, especially as the throttle opening increases.
To adjust the governor, you would loosen the screw on the bottom of the governor arm and push the governor arm so the throttle is wide open. Then you would turn the bottom “clip” (which is connected to the governor shaft) counter clockwise. This will set the governor shaft on top of the governor spool.
Are all carburetors adjustable?
A: Adjusting the mixture on a carburetor is done in several ways and the steps ultimately depend on the model of the carburetor you are working with. At idle, however, most carburetors simply require adjustments to be made with idle mixture screws.
How do you adjust the idle on a Tecumseh engine?
How to Adjust a Tecumseh Carburetor
- Locate the adjustment screw on your Tecumseh engine.
- Turn the adjustment screw clockwise until the needle valve is closed and seated at the bottom.
- Turn the adjustment screw counterclockwise 1 1/2 turns.
- Turn the engine on and let it warm up about five minutes.