I have a 1986 hydrosport bass boat,someone stoled my gas cap an got a few gal. of gas...what gas cap will fit this boat... it measures 1 1/2". only word written on the fill is GAS.Only thing I remember about the cap is it was plastic and black. I would take the fill off an try an go match 1 up but it will not come loose,I remove both hose clamps but it is there too stay. thanks for any help...........
