- Thoroughly clean the connections and their surroundings before removing them.
- Place removed parts in a clean place and cover. Use film and paper, do not use lint-free rags.
- Exposed elements must be carefully closed or covered if repairs are not carried out immediately.
- Install only clean parts.
- Remove spare parts from packaging just before installation. Install only clean parts.
- Do not install parts that were not in the package (e.g. taken from a toolbox).
- With an open fuel system, if possible, do not work with compressed air. If possible, do not move the car.
- If possible, do not move the vehicle.