How Do You Adjust A Walbro Carburetor?
Walbro carburetors are almost standard on most all two-cycle engines. Two-cycle engines require that oil is mixed with the gasoline fuel. Failure to mix the correct oil in the gasoline will result in permanent engine failure and damage. Adjustment of the carburetor may have to be performed on a periodic basis and most definitely after the simple device is rebuilt. Adjustment will not take long and the small screws may have to be “tweaked” after the engine has warmed up and been running for a few minutes. Identify the two-fuel adjustment screws on the side of the metal carburetor. One screw is labeled “lo” and the other is marked “hi”. The “lo” fuel screw is for when the engine is idling. The “hi” fuel adjustment screw regulates the fuel when the engine is at full throttle. Turn both of the screws, gently, in a clockwise direction to seat the base of the screw inside the carburetor. Do not tighten the screws with any form of a forceful nature. When dealing with these small carburetors “
