How to install the throttle line of Land Rover 150 motorcycle?

It is necessary to remove the upper cover of the carburetor, pull out the return spring and throttle, pass the throttle pipe through the groove and spring on the throttle, fix the welding spot at the head of the throttle pipe in the groove at the bottom of the throttle, install the throttle into the carburetor at an angle (pay attention to the positioning pin, otherwise the throttle will not fall to the bottom), and then install the upper cover of the carburetor.