Hello all, I have a 1988 743 and when I was doing some work over the weekend, When I started to notice a burning smell, I stopped the machine, opened the back door an had oil everywhere. The dip stick came out! As it was time for an oil change anyway, I proceeded. My thought on how this happened is as I was digging on the stump, the ground was very soft the bobcat sunk in the ground pretty good. When this happened the blow buy tube from the top of the engine going out the bottom of the machine got pinched and closed off the tube. Does this sound like it could have caused this problem? Now I am checking the back of the machine every 10 minutes to be sure all is ok. ANy input would be appreciated.