Firstly the zip is fitted with a primary ignition coil so you could throw the battery in the bin and it would not affect the ignition system.the bike has a connector block where the stator wires come out of the engine it's on the right hand side above the fan cover ,this connector fails as it goes green and oxidized, clean it and 're check it then if it still don't spark disconnect the wire from the back of the ignition switch and try again,if still no good spark try another cdi coil on it they are cheap and do go wrong if it's still not good check the green wire at the cdi/coil unit that goes to the ignition switch isn't touching earth anywhere on its way up to the switch.last reason will be the generator gone bad replace it.but before you do anything have you tried a new spark plug and ht cap ? Ps I know exactly how these machines work I was building them out of a crate 20 plus years ago.;0)
adam bike doctor, February 2015
