As I haven't accumulated a hoard of genuine Bridgestone tools over the decades, I needed the wrench for the ring nut holding the clutch housing. The local O'Reilly's had a selection of lock nut sockets, and the W1271 2-3/8" 1/2" drive item fit perfectly. The other chain stores should also have an equivalent.
Also, the left hand pinion gear nut on my engine has a 29mm hex, not a 28mm as listed in the manual. Is this something later, or??
Thanks, Chase