Re: Replacing shift cable on outdrive.
First, you either have a 290 or an SP-A drive. This could be a 290A s/p ( s/p meaning single prop).
SP-A is another drive model number. Much will be the same, however.
The housing attached to transom is a "transom shield".
Secondly, there should be no cable clamp on the transom itself. (I may have misunderstood you)
The cable will clamp directly to the Intermediate housing, and will be left free to slide within the shift cable sheath (i.e., rubber hose).
Pulling the cable out forward is usually not an issue.
Once the cable crimp sleeve is past the Transom Shield fitting (blue arrow below), they typically pull right on through, and easily.
You may find that feeding the new cable in, may be best if done from the drive end.
All of this work is much easier with the transmission removed. You can kill several birds with one stone:
Shift cable replacement, Water Neck fitting, New drive shaft bellows, inspect the universal shaft, renew the O-rings between the Trans and Intermediate, and so on.
Pay particular attention to the water neck fitting!
NOTE: The shift cable/sheathe is a wet area, so the interior side of the sheathe must be positioned and clamped above the water line.
Do NOT clamp the cable itself near the sheathe.........., clamp the sheathe only.
It must be free to travel some within the sheathe as the drive articulates Up/Down... Port/Stbd.
Also, do not try to remove the sheathe fitting! (see blue arrow)
Rick ... aka Ricardo
28' SDN F/B w/ twin Volvo Penta 5.7L DP's