Oday drop down keel, which line puts the keel down?

May 6, 2015
1
Oday Daysailer III Hatton Beach
My 16 foot Daysailor III 1987
The top line passes through a hole into the cabin then over some pulleys and into the back of the center housing that contains the drop down board .
The lower line passes through a hole into the cabin goes over pulleys above and come down into the top of the center board housing some what, maybe a foot aft of the front of the housing . So, which on do I pull to lower the centerboard?