1997 yamaha warrior atv not starting!?

[Jake L]

Well I bought my atv yesterday and the guy said something electrical was stopping it from running. When I try to start it the engine turns but there is some sort of ticking or clicking noise comming from the back of the atv. I dont know if its a relay, cdi box, or what...... please help me fix this! Thanks
Also it is not getting a spark sometimes
Its the starter relay that is making the noise
Now its getting a spark every time but it just will not crank.... its still making a clicking sound.

[dodge man]

if its getting some spark to it ,it could still be the cdi box gone bad on it they will fire intermittently sometimes but not enough to make one start and run,but id try a new plug in it just to see what happens,mine done this once and i though the cdi box went out it would only fire once in a while and when i put a new plug in it it started right up,and there's no way to check a cdi box that will rule it out for sure the only way is to replace them,and their real expensive,so id try a new plug first,it might fire up and run,good luck with it,if its not turning the engine over try jumping it over at the starter relay and see what happens,also make sure the battery is fully charged on it,they wont usually start good with a weak battery it takes all the power to turn the starter on it,