[Veg]

I'm going to take a guess and assume it's the same as my 2900 Open... Which means the whole thing is hinged at the bottom and held at the top (on the back) with a rubber cup fitting similar to the ones the use on swim platform hatches. To open, I position all four levers to the position closer to me (what would be reverse and zero throttle) to use them as "pulls", grab two on each hand and give a firm tug towards me until the thing opens. Sometimes I ask someone to help me so I can pull on a pair of them and someone else can pull on the other two. It's basically like a suction cup, but it takes a good yank to open.