The throttle button on my HC won't run smoothly

Symptoms: 

The throttle button doesn't run smoothly or gets stuck when released. The reason for this can be sand or dirt inside the piston.

Resolution: 

To fix this issue you will need a 2,5mm hex tool(Alen key).

1. Remove the 2,5mm hex screw in the center part of the Throttle Button
2. Remove the Throttle Button and the Spring
3. Rinse thoroughly with fresh water and remove any debris from inside the Throttle Button Chamber
4. Place the Spring on the Piston followed by the Throttle Button
5. Install the screw with applied thread-lock and tighten with power of approx. 0,9Nm