What I did was put two stands together (10 and 15 dollars at a fleamarket), didn't even have to drill a hole. In the front stand I have a section of 2" pvc with a piece of angle iron attached. After I remove the top end of the engine I can rotate it upside down slide the pvc in until the angle iron is under the front motor mount. Then I can release my rear bottom engine mount and the front part of the case rests on the angle. I am then able to remove the covers, split the case and do what ever I need to do. Much easier then wrestling it around on the floor or on a bench. If I were going to split the case with the top end intact I might go to a metal pipe but so far no problem.
Also in the pics is my Wheelchair lift, also a fleamarket find. It's compact, easy to use and is rated for 450 lbs.
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Check out the weld on the filter mount, I've had this engine about five years but scared to run it.
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Jim