Hello everyone. I think its a z1. I bought this pocket bike from a girl i knows brother. Pull start was all taken apart and coil out to. So i got it all back together. I got it running ( does not idle) but is super quick! first 10 min i think over heated so i put water in it. Next day taking it [for a ride] and the air filter fell off and i ran it over. Some plastic broken. can you guys tell me any more about it?? 49cc? how fast does it go? He told me it was 4 cycle, but i dont think it is. Where can i get parts? Here are some pics.