I just went through this PITA. I finally had to loosen the cables to the chain, remove the compass, and pry it off the sprocket to aft. But this was easy after I removed the fuel tank and engine. Make sure you don’t move the wheel so you can keep rudder alignment. Then there’s enough room to get the clamp out. I could then get the cables out. Since I am going electric, I didn’t have to try and replace the cables and that damned clamp. Have fun!
Dan
424 ketch #135
Keehi Lagoon, O’ahu