QUOTE(DRPHIL914 @ Sep 17 2018, 10:27 AM)
the retainer that holds the distributor is on a ring like thing at the base of it and it sticks out laterally , might be hidden under the vac can, but I think its 8mm or 9mm not 13- once you loosen that you should be able to just lift it out.
No! The nut that mounts the ring to the case is 13mm. The adjustment lock nut is 10mm. You have to loosen the 10mm nut and turn the diz clockwise to expose the mount nut. There is a washer on the bottom of the shaft. Pull the diz out slowly and make sure the washer is with the shaft. if not, use a magnet to retrieve it. It can fall in the crankcase and that's very bad. Put that washer somewhere safe and don't lose it. It must go back on. A little axle grease will hold it in place while installing the diz.