I was mowing with my L245 the other day and all was going well. I shut it down for a little while to grab some lunch. When I restarted it, a large stream of oil came shooting out of the side of the engine. I immediately shut it down to investigate. The oil came from a small hole, about the size of a pencil, which was located directly behind the oil filter on the side of the engine. The hole appears to be part of the tractor's design. (Like maybe something had been mounted there or perhaps a plug or something). Any ideas about what could have happened or what I need to do to fix it?