Newbie with questions...help

[jamesbowers]

First of all how do I identify which specific model I have? It has light grey leg pads and a blue battery pack inside, I bought one second hand and am learning to ride....not well. After removing the battery pack I discovered a large rip behind the battery where something has ripped a good size gash in the white plastic, upon inspection I believe it to be the metal piece that keeps the inflation valve down....don't know the name of this piece. Ideas? The cycle still works mechanically and I plan to replace that piece if I can learn to ride this thing. I bought it from a kid for $150, hope I did ok. Lots more questions but I'll let you guys answer this first, thanks. Eddie