I am looking for an owners manual for my ancient Powabyke . I bought it second hand , and I do not know the model name . It has rigid forks , lead acid batteries , and a front hub motor , and five speed deraileurs . It does not have a low step through frame , the batteries fit between the two slim top tubes of the frame .Could the model be a Euro ? Can I download a manual any where , or does anyone have a surplus one please ? Another question . On the side of the battery box at the rear on the right is a large screw head of the type you would unscrew with a coin . This is not the fuse holder as that is a seperate item . Inside the box , behind the screw is a black pastic component with 2 or 3 wires to it , I forget which . Anyone know what this screw/component is , please ?