About the first thing I did to it besides the different front wheels/tires was to address an oil/fuel leak. It dripped fuel fairly steadily from the sediment bowl, so much so that it was worse with the petcock turned off. I had a new bowl I just needed to get a new nipple to the tank. I also shortened the fuel line as the PO had (the bowl) oriented the wrong way and the fuel line about 6". I always enjoyed that the sediment bowl was directly over the coil so if it leaks fuel it's leaking directly onto an ignition source.
The oil leak turned out to be a bit more of a mystery. It didn't leak just putting the engine around on low revs, but if I opened it up WOT for a good 5 min or more it'd come out pretty significantly. It appeared to be coming from the breather area. I pulled the carb (snapped a carb bolt off in the engine, however, there was enough of the stud left that with PB blaster, heat and vise grips I could back the rest of it out) the breather, cleaned it all, new gaskets and a breather assembly/filter material, then reassembled everything solved the problem. Oil change as well. Thanks to Dale Merkle for his technical advice on that process! A K161 Kohler service manual was also utilized as a resource.
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Daniel G.
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(May 1970) 147 w/an IH spring assist, 48" deck, 42" blade, 1969 73, #2 trailer, 10" Brinly plow and (on loan) Dad's #2 tiller.