Rules for cleanliness when working on the fuel injection device

Thoroughly clean the joints and around them with petrol.

Fold the removed parts on a clean film or paper and cover. Do not use rags with lint!

Cover open parts carefully if they are not to be repaired immediately.

Install only clean parts. Remove spare parts from the packaging just before installing them.

With an open system: If possible, do not work on the compressed air system and do not move the vehicle.