I have one of those 46 series opposed Briggs, about 20 years old. It ran well (bit of smoke on startup) until it threw a rod (spun top bearing). Both rods broken. Maybe I didn't check the oil, maybe just 20 years of use and it had it.
There are very few parts available.
Crankshaft has some aluminum tracking on the journal, some say it could be cleaned with oven cleaner (I could post pics). Guess it could be machined, but I don't see parts for a machined crankshaft. The measurements on the journal mics out. (other one still has part of the rod on it)
I would buy a new one but the reviews on the newer mowers are terrible.
I would need at least rods, possibly pistons and rings (they seem ok, but I would have to take apart more). Lots of shrapnel in the crankcase.
There are very few parts available.
Crankshaft has some aluminum tracking on the journal, some say it could be cleaned with oven cleaner (I could post pics). Guess it could be machined, but I don't see parts for a machined crankshaft. The measurements on the journal mics out. (other one still has part of the rod on it)
I would buy a new one but the reviews on the newer mowers are terrible.
I would need at least rods, possibly pistons and rings (they seem ok, but I would have to take apart more). Lots of shrapnel in the crankcase.