What did the piston look like? was there a hole in it? When you say it blew what blew? Was his oil res empty when he filled it up? He may want to make sure he didn't have an air leak and burn it down if there was no piston wash.
Now Indy , the sea and snow did not make it blow up ! I have been useing it in my sled for 4000 miles and never had a problem !
Back to the original topic.
What happens when you press the F13 button depends on if you lubricated it Amsoil. Also, depends if you push it in the spring after winterizing with Sea and Snow