Dl250 throttle returns slowly.

1. First of all, the dl250 throttle returns slowly. At the joint of carburetor and throttle pipe, add a pull-back auxiliary tension spring.

2. The second reason is that the throttle pipe or throttle handle is stuck, and the throttle valve or throttle valve and oil needle of carburetor are stuck. Try changing the throttle line.

3. Then consider looking at the carburetor. Check the oil return of carburetor, throttle and accelerator pump.

4. Finally, try to reduce the bends of the throttle pipeline, or reduce the angles of these bends, take out the needle seat of the carburetor and polish it with 2000 sandpaper slightly, which will also help the throttle pipeline to work flexibly.