Was riding for a few hours and it just quit! Had a small issue earlier but it fired up within 5 minutes and ran strong for another couple of hours.
Now it wont fire at all.

What I've looked at so far.
Primary coil .4 K ohm (.32- .48 Spec)
Secondary 15.5 ohm (5.68-8.52 spec) What would cause this? Wire disconnected.
Pick up coil is within spec
Stator has 7.3 volts when cranking.
Is it possible that the coil went for a crap??
Are these a magneto style coil?? the wire that hooks to it is actually a kill wire to ground when you shut the key off?

Thanks in advance.

 

anybody?????

 

Here is a good video. Its a Worrior but its the same 348cc motor as yours.

 

I checked the pickup.. its seems to work.. reading the pulse.

 

If the coil specs are out of allowable range,(plug cap checked also)it's the cheapest of the electrical items to replace,before you blow money on a cdi or stator etc on a hunch. If this add is true, seems like they've sold quite a few of them. 11 bucks shipped. http://www.ebay.com/itm/YAMAHA-Ignition-Coil-YFM350-YFM-350-Big-Bear-Raptor-Warrior-1987-2009-ATV-/271464978622?hash=item3f3492d8be&vxp=mtr

 

Well... My buddy has the same bike. What I did was, Put my coil and cdi box on his bike and it started right up.
I checked the output from his stator and compared to mine.. both around 90 v ac.
Guess that leaves the pickup coil. I'll order one and see what happens.