I have a 2007 Yamaha YFZ 450 I'm not sure if it's the bill balance edition or just a regular four wheeler I would like to know how you can tell the difference in the two and I'm not getting any spark to my spark plug I replaced the ignition coil the battery the relay I need to know what's next the rectifier order CDI box if you could answer this and help me I would appreciate it.

 

Don't know the YFZ450 at all but having no spark will have nothing to do with the relay or the battery, so you have already wasted money. Get a workshop manual and do the ignition circuit tests in there, before buying anything else. Never, ever, fit a new CDI without testing the wires to it first. You can blow a new CDI if you fit it with a faulty earth wire.

 

Spark