2 hours from home (and tools);
Running fine stopped for lunch, no start, no neutral light. Quick visual didn't notice anything...came home disgusted.
Beer drinking followed...
Today, I went over the wiring carefully. Under the seat I finally noticed that the battery retainer and its screws were gone. On closer inspection the ground cable was broken at the battery connection! I couldn't find the battery bracket, it must have vanished with the screws.
I am under warranty (<60 days old), so we'll see what they say
at the dealer.
Parts are under $20, so cost is not the big deal, but shouldn't the quad have been less susceptible to this while trail riding?