How to fix a falling FELCO rotating handle

What you'll need:
A pipe wrench
A dry rag
Spare part 7/23 (rotating handle axle)
Instructions:
1- Remove the handle
2- Unscrew the old rotating handle axle and replace it with the new one (pay attention not to damage the surface of the axle by protecting it with a rag while tightening
3- Lubricate the small sphere placed towards the tip of the axle
4- Insert the handle again