How to drain and refuel the carburetor of curved beam motorcycle.

A plastic pipe is connected below the carburetor, which is the oil drain pipe. There is a bolt on the oil drain pipe, which is the oil drain bolt of the carburetor.

If it is a carburetor that has been used for a long time, the material pipe may have fallen off, but you can see that there is a downward hole at the lower end of the carburetor, and a bolt is screwed horizontally at the top, which is tightened clockwise and loosened counterclockwise. The principle is like a faucet. Once the water is turned on and off, it won't come out. If you want to refuel, just add gasoline to the tank and it will flow into the carburetor.

Main classification

Carburetors are divided into simple carburetors and complex carburetors. Carburetors can also be divided into downward suction type and horizontal suction type. According to the type of throttle, carburetor can be divided into rotary type and lifting type. The rotary throttle valve is a disc-shaped throttle valve, which rotates around the axis between the carburetor throat and the intake pipe to change the flow area of the intake pipe.

The lifting throttle valve is a bucket-shaped plate throttle valve, which moves up and down in the throat to change the channel area of the throat. This form is often used in motorcycle carburetor. There is also a carburetor that is a mixture of the two. The rotating throttle is controlled by people, and the lifting throttle is controlled by diaphragm, which is also often used on motorcycles and is called CV type.