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| Open and jam throttle valve for stage I -arrow-. |
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| Pre-tension locking lever -1- for throttle valve stage II with rubber ring. |
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| Unscrew stop bolt -A- until a gap is present between bolt and stop -B-. |
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| Screw stop bolt in until it touches stop -B-. |
Note | Place a thin piece of paper between stop bolt and stop to precisely determine stop bolt stop point. Determine stop point by constantly moving piece of paper whilst screwing stop bolt in. |
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| From this point, turn bolt 90° further. |
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| Secure stop bolt with new locking cap. |
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