Cant say from experience with this particular model whether it is an air or fuel screw, however; If there is only one screw then it does both. If there are 2 others near it then one does the air, the other two do the fuel. The factory standard setting for the main idle-adjustment screw on most bikes is 1 and 1half turns out from closed position. This is often the case with the other adjuster screws as well, but the mixture will need to be altered as the engine wears.
A screw picker is a small tool used to handle small screws during small intricate repairs. The screw picker has a small claw that can be extended and grasp the small screw to twist it in place.
symbol for screw down non return valve
presuming you mean the lead screw on a lathe, used when cutting threads on the workpiece, then the screw itself is obviously fixed, but the rotation of it may be able to be changed, depending on the lathe manufacturer.
The pozidrive screw is a modified phillips head screw that can be used in almost any application. It has 4 additional cuts in the head and it takes a special tool to remove them although a regular phillips head screwdriver will work if they are not very tight.
Linear and rotational
Try 1.5 turns out on the mixture screw for an initial setting.
If it's an EFI engine you do not adjust the mixture screw. The mixture is computer controlled.
On the front side if the carb on the bottom
2 1/8 turns out from full in for the air screw.
1-1/2 to 2 turns out.
the best way to set the idle mixture screw is with a gas analyzer. setting the mixture to 14:1. if you dont have one use a vacuum gage and set for the highest vacuum. If you dont have one of them then turn the screw in til the engine starts to stumble. then turn the screw out til the engine starts to stumble. turn the screw back in half the distance. that will be your best setting. Any leaner and the engine wont start, any richer and the engine will flood.
you can't its computer controlled, unlike the old carburetors with an idle air mixture screw to adjust, its set by the factory and you can't screw with it
2 turns out from seated is a good start
The carburetor on a 125cc Honda Wave is adjusted by turning the idle mixture screw and idle speed screw along the front. Both are turned until the desired rpm and performance are achieved.
The only setting is one screw on the top of each carb its the mixture screw and should is 1.5 turns out by default.
Set idle speed to proper r.p.m, by adjusting the IDLE SPEED SCREW. Turn the IDLE MIXTURE SCREW or the AIR SCREW to for correct procedure, achieve highest speed and best response. The IDLE MIXTURE SCREW (FCR) controls fuel delivery to the idle port and the SCREW is located on the engine side of the carburetor slide. Turning the IDLE MIXTURE SCREW out will make idle and off-idle richer. Turning IDLE MIXTURE SCREW (CR, PWK, PJ, PE) controls the amount of air to the IDLE and SLOW CIRCUIT. This SCREW is located on the air cleaner side of the throttle slide and turning the SCREW out will lean the mixture and turning the SCREW in (clockwise) will richen the mixture.
The black Phillips head screw on the rear of the carburetor adjusts the airflow. You need to have it about 4 full turns into the hole and that's factory. To set the carburetor, just continue to screw in the air screw until the bike runs properly. In your climate, you will hear and feel the bike get smoother as the carburetor gets to the proper setting. Try it out and have a blast!!