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Great PDF for the BF8D, but searched for similar for the BF8A, BF-75/100 without success, but this will help:
http://tinyurl.com/hflg4hr
You can (+) to read the above and Print pages as well, but not download them.
Page 81 covers the shift rod and page 82 is for the pump replacement after you remove Shift Rod Joint. Count turns as you remove (my BF-100 was 17) and you could make handy tool from coat-hanger wire. Put some dental floss or thin mono through cotter pin and clevis holes in case you drop them.
Art
The Honda site only has the instructions for current engines.
Looks like pilotart has given you a good lead for your Bf75.
Mike