To get the Briggs 8 hp engine running I had to clean and reset the points, after refitting the flywheel and tightening the nut as best I could I tried to start it. The subsequent backfire sheared the alloy key. Whilst waiting for a couple of new ones to arrive,( eBay ), I set about making a "socket" to allow me to reach the 65 lbs ft required. A bit of time spent turning, milling and welding a piece of scrap & a nut resulted in the following, ( see pics ).