| When working on the fuel supply/injection system, pay careful attention to the following “5 rules”: |
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| Thoroughly clean all unions and the adjacent areas before disconnecting. |
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| Place parts that have been removed on a clean surface and cover them. Use lint-free cloths! |
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| If repairs cannot be completed in one session, all parts and components that are left open should be covered or stored with the greatest of care. |
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| Only install clean components: |
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| Only unpack replacement parts immediately prior to installation. |
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| Do not use parts that have been stored loose (e.g. in tool boxes etc.). |
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| When the system is open: |
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| If possible avoid the use of compressed air. |
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| If possible, do not move the vehicle. |
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