Guidelines For Clean Working Conditions

Danger of Malfunction Caused by Debris

When working on the fuel supply/injection system, pay careful attention to the following "7 rules" of cleanliness:

• Thoroughly clean the connection points and the surrounding area before loosening.
• Place the removed parts on a clean surface and cover them. Only use lint-free cloths.
• Carefully cover or seal opened components if the repair is not performed immediately.
• Only install clean parts: remove the replacement parts from their packaging just before installing them. Do not use parts that have been loosely stored or unpackaged (for example, in tool boxes etc.).
• Do not work with compressed air when the system is open. Do not move the vehicle.
• Make sure no fuel gets onto the fuel hoses. If necessary, the fuel hoses must be cleaned again immediately.
• Protect any disconnected connectors from dirt and moisture, and only connect them when they are completely dry.