Do you mean the dropping the feed dogs which are in the needle plate area? here is a link for a manual if you don't have one, but it is not free it should have the information you need http://sewusa.com/Sewing_Machine_Manuals/Bernina_Manuals/180_Instruction_Manual.htm
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Do you mean the dropping the feed dogs which are in the needle plate area?
here is a link for a manual if you don't have one, but it is not free
it should have the information you need
http://sewusa.com/Sewing_Machine_Manuals/Bernina_Manuals/180_Instruction_Manual.htm