How do you adjust a high and low carburetor?
Locate the two fuel-adjustment screws on the side of the carburetor. One will be labeled “Hi” and the other “Lo.” The “Hi” screw regulates the engine at full throttle and the “Lo” regulates the fuel when the engine is idling.
How do I know if my carburetor is rich or lean?
Q: How Do You Tell if a Carburetor Is Rich or Lean? A: One way to tell for sure is by “reading” the spark plugs. If the plug tip is white, the mixture is lean. If it’s brown or black, it’s rich.
How do you adjust a 2 stroke air screw?
When adjusting the air screw, if you want to go leaner then you need to open it up to allow more air in. Turn it out (counterclockwise). To make it run richer, turn it in (clockwise) to decrease the amount of air allowed through it.
What are the two adjustment screws on a carburetor?
Instructions. Locate the two adjustment screws on the carburetor. One screw is for the idle speed or low speed; the other is for the high speed. Turn both of the screws counterclockwise to back them out.
How do I make my carburetor more lean?
The first thing to do is not set up the idle speed, but to set the Idle mixture screw to lean best idle setting. First, turn in the mixture screw until the engine dies or runs worse, then back out the screw (recommend turning ¼ to ½ turn at a time). The engine should pick up speed and begin to smooth out.
How do you adjust a rich carburetor?
Regardless of whether or not the engine is running too rich or too lean, bring it down to a very lean mixture by turning both screws a quarter-turn at a time, counter-clockwise, then slowly bringing them back up to an equal and smooth mixture.