Alright guys been out on my bike today after fitting a new radiator 
Firstly a noticed the fan seemed to be coming on a lot  
Then after about 10mins riding a went up a hill and it cut out 
A kicked it and a had a little back fire 
Then after about 2 mins it started and a cut it out to see if it fired back up with no joy 
2mins later it started and I tried the same it wouldn't fire up  
A got it home and have no spark I changed the plug and the same no spark 
Me mate put a screw driver in the cap and he got no belt 
I've checked all the wiring is connected properly etc 
And have also disconnected the kill switch to rule this out 
Can some one help me with my next move before I either scrap this bike or set it on fire thanks