The mark -arrow- on the rear of the guide upper section -1- must, on both sides, lie within the marks dimension -a- on the guide plate -2-. |
The guide plate -2- must be located in the guide rails (cannot be moved by hand). |
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| Push guide upper part -1- both sides centrally between the marks. |
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| Install drive in this (zero) position. |
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| Then check zero position. |
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