I recently acquired a 1989 Mastercut lawnmower that is in beautiful shape. However, shortly after I started my maiden voyage with it around the lawn the muffler popped out. Upon closer inspection, the threaded exhaust port is completely stripped. Half of the port is almost completely smooth.
Any ideas on how to fix this?
The block is aluminium so I think welding isn't an option.
I noticed that there are two screw holes on each side of the port, however I can not seem to find a muffler that would fit those screw holes and also have a long enough neck to get in front of the carburetor.
I bought a circular pump flange as I saw suggested on another forum, but the smallest one I could find was way too large.
The only other option I can think of is to buy a whole new block, any idea how I can locate one?
I guess I could also re-power it, but that seems like overkill, but maybe these old 12hp engines are cheap? If so, any idea where I could find one?
Thanks a million!
Edited by JakeQT17, May 08, 2016 - 09:26 PM.