If I understand your post correctly I think that you are talking about the over-centre levers which can be used with a traditional 9 stud hood? If so, the purpose of the eccentric levers is to drop the whole hood frame assembly to remove the tension while you attach the hood at the rear and at the front. Once the hood is attached to the press studs at the front and positioned under the brackets at the rear, the levers are rotated to lift the hood frame to place the hood material under tension.
If you are talking about something else, ignore this reply obviously.
If you are talking about the lever which releases the "Easy Up" hood at the rear, its purpose is to release the spring catches at the rear of the hood to allow access to the luggage space and to allow fitting the hood header rail to the windscreen frame.

Last edited by Max5; 20/10/19 07:54 PM.