What is the reason why the motorcycle throttle sometimes doesn't return?

The motorcycle throttle does not return, which is generally caused by the throttle pipe or throttle handle being stuck, and the throttle valve or throttle valve and oil needle of carburetor being stuck. You can check whether the accelerator pedal return spring and the accelerator pull rod return spring are broken, detached or stuck. If there is no problem, check the oil return of carburetor, throttle and accelerator pump.

Solution:

1. Add a pull-back auxiliary tension spring at the joint of carburetor and throttle pipe.

2. Try to change the throttle line.

3. Consider looking at the carburetor.

4. Try to reduce the camber of the throttle line, or reduce the camber angle to straight. Taking out the needle seat of carburetor and gently polishing it with 2000 sandpaper will also help the throttle line to work flexibly.