| When working on the fuel supply and injection system, pay careful attention to the following „5 rules“ for cleanliness: |
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| Thoroughly clean all unions and surrounding areas before disconnecting. |
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| Place parts that have been removed on a clean surface and cover them over. Use only lint-free cloths. |
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| Carefully cover opened components or seal if repairs cannot be carried out immediately. |
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| Install clean components only. Do not remove replacement parts from packing until immediately before installing. Do not use parts that have not been stored in their packing (e.g. in tool boxes etc.). |
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| When system is open: do not work with compressed air if this can be avoided. Do not move vehicle unless absolutely necessary. |
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