Righty Richer, Lefty Leaner?

Trying to come up with a saying to help remember this:

The pilot circuit can be adjusted while the bike is idling and then test run. If the engine is running poorly just off of idle, the pilot jet screw can be turned in or out to change the air-fuel mixture. If the screw is in the back of the carburetor, screwing it out will lean the mixture while screwing it in will richen it. If the adjustment screw is in the front of the carburetor, it will be the opposite. If turning the screw between one and two and a half doesn't have any affect, the pilot jet will have to be replaced with either a larger or smaller one. While adjusting the pilot screw, turn it 1/4 turn at a time and test run the bike between adjustments. Adjust the pilot circuit until the motorcycle runs cleanly off of idle with no hesitations or bogs.

"If the screw is on the air filter side, righty richer, lefty leaner".....ideas?

If the screw is on the engine side of the carb, it is a mixture screw:
Turning this adjusts the mixture volume from the pilot air/fuel jets . Turning it right ( IN) leans idle by reducing the mixture volume, turning it left ( out) increases the mixture volume to richen idle.

If the screw is on the air filter side of the carb, it is an air screw
so turning left (out) increases air and leans, turning it right ( in ) decreases air and richens

DeanJ said:

If the screw is on the engine side of the carb, it is a mixture screw:
Turning this adjusts the mixture volume from the pilot air/fuel jets . Turning it right ( IN) leans idle by reducing the mixture volume, turning it left ( out) increases the mixture volume to richen idle.

If the screw is on the air filter side of the carb, it is an air screw
so turning left (out) increases air and leans, turning it right ( in ) decreases air and richens

Click to expand...

Cool, so all agreed.... Air filter side, Righty Richer, Lefty Leaner. And vica versa for engine side. Tell your friends