How does a scooter variator work?

You can watch the video at the link:

https://dai.ly/x9p9dx4

#Sanya tsvay

animation scooter lubrication system 139qmb

 The video can be viewed on various video platforms:

on (rumble)

https://rumble.com/v6xxd8c-4t-scooter-lubrication-system.html

#Sanya tsvay

how does a scooter engine work

Fuel System and Carburetor Operation in a 4-Stroke Scooter Engine

Here you can watch a video of 3D animation of the scooter in operation(the video is on the service rumble):

https://rumble.com/v6xw0xg-how-does-a-scooter-engine-work.html

Vacuum-operated fuel valve
The valve diaphragm is supported by a spring and normally blocks fuel flow. During the intake stroke, vacuum in the intake manifold travels through a hose to the valve. Under atmospheric pressure, the diaphragm bends and fuel flows by gravity into the carburetor.

If the carburetor float chamber is empty, the float is down, allowing fuel in. As the chamber fills, the float rises and pushes the needle valve upward. Once the correct level is reached, the needle blocks further fuel supply.