My sons warrior started up today.....ran for a moment then a grinding sound and then shut off and now can pull it over.
what should i check before ripping into the engine?
any known issues?
could it be, piston,crank, valves?

was running perfectly prior to this....

 

don't know much about the worrior's I would start just pulling the valve cover check you valve's make sure all stems are straight and even. then if nothing pull stator and check lower end bearing and timing chain

 

just thinking that because if chain jumped time that could have been grinding noise but like I said don't know much about the internals on worriors

 

Did you remember to put oil in it? ;D