The motor seems to have a metric size driveshaft. 14mm is equivalent to 0.551″. The motor was built in Peterborough and we were well on our way to going metric back then.
This reply was modified 4 years, 1 month ago by dan-in-tn.
This one appears to have the larger gearcase from the 22CI engines…Hopefully the author of this post has ordered the correct parts book I found for him…