Caution | The fuel system is under pressure! Place a cloth around the connecting point before releasing hose connections or when opening the system. Then reduce the pressure by carefully removing the hose or cap. |
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| Observe the following points to prevent injury to persons and/or damage to the injection and preheating system: |
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| Do not touch or remove ignition leads with the engine running or at start speed. |
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| Do not disconnect and connect wires of the injection and ignition system and measuring device wires unless the ignition is switched off. |
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| To operate the engine at start speed without the engine starting (e.g. testing compression pressure), unplug connectors from the ignition unit and connectors from the injectors. After performing the work interrogate fault memory and erase. |
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| Do not carry out engine wash unless the ignition is switched off. |
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| Switch off the ignition before disconnecting and connecting the battery, as this may damage the 4AV control unit. |
| If test and measuring devices are required during test drives observe the following: |
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| Always secure the test and measuring devices on the rear seat and have a second person operate them there. If the test and measuring equipment is operated from the front passenger seat, this can result in injuries to the persons sitting on that seat in the event of an accident which involves the front passenger airbag being deployed. |
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