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If it was me...I would disregard the vac pump and just look down manually close the butterfly with force. Then just hook up the multi meter check for 0 or whatever it tells you in the BGB at Closed. and 5V or whatever at full open you will have to adjust it otherwise your mixture will be off. Its pretty much slap it on check it at closed...check it at open..adjust for high voltage. Set butteryfly for low voltage.
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