I have recently bought a DHZ 160 and am doing it up slowly. I have attached photos but what I have are cylinders (Chromed to look pretty) mounted either side of the carby with what looks like a breather hose coming out from the top of the cylinder head. Seems also to be a breather tucked up under the rear mud guard. I'm not sure if its a breather or even some basic injection. Anyone help me identify what they are and if I need them.