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Old 07-25-2013, 09:54 PM
catamount catamount is offline
MC Fanatic
Join Date: Feb 2012
Boat: 1987 ProStar 190
Location: Vermont
Posts: 500
This had me confused at first as well. Every automotive tuning video usually shows a port coming off of the throttle body, which none of us with marine carbs should have.

After careful inspection, I found mine... covered in several layers of paint it may be harder to notice. It is a hex head plug located on the back of the intake manifold here:

(this is not my picture, just something I found on the internet to approximate what you should see)
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