I just got a blaster, and the darn thing wont fire. Everythings hooked up right, and theres no spark. I have the head off because Im getting a bigger piston and getting the jug bored, and when I turn the crankshaft I cant get it to fire at all. I guess maybe my coil is bad or there might be something wrong behind the flywheel.. Does anyone know where I could get a wiring diagram for one? thanks

 

Welcome to the forums.

Are you absolutly positive its not getting a spark? my cousin thought he wasnt getting a spark turns out his reeds were just dirty.
Have you tried a new plug?

Heres a parts finder
yamaha

 

well I got a nice shiny piece of wire and put it on the coil wire (that goes to the plug) and held it while I was turning it over.... im stupid like that haha! but i felt no jolt or anything. and no spark on the plug either.

 

Do you have the TORS still in place on your quad?

 

and yep im new! thanks!! but ive been riding since I was a kid.. and now im 22.

 

i have no idea what a TORS is....... could ya help me?

 

Its a wire comming off the bottom of your carb right below the idle. its black. Id get the TORS outta there ASAP if its still there. It will give you nothing but trouble. You might need a TORS removal kit, i didnt though. Accually put the sparkplug in the coil and try it. Have someone else kick it over and see if you can see a spark. Read this article. one of the guys from this page made it.

TORS removal article

 

there arent any wires on the carb. so i dunno

 

alright, I read that article, and thanks to you I found out that it doesnt have a TORS. So I dont have to worry about that... but the spark, I dunno. I guess Ill keep trying

 

T.O.R.S is the throttle over ride system. There are a couple of wires going to it. they go to your throttle. If your throttle sticks open the T.O.R.S shuts your wheeler off by killing spark. There have been many cases of this system causing the problem you are having!

What year is it, if its an 03+ all you have to do is unplug it, cut the plug then splice the wires. If its a pre 03 u need to cut a few things off the bike a splice a few things.