I have replaced a 20hp mariner for a newer 25hp mariner. The old engine was a push to throttle set up, the new engine is a pull to throttle. The control box can be altered to work with the newer engine, but not sure how you convert the morse box.
I think the problem is his old mariner was a Yamaha built one, so has the Yamaha control box configuration and the new ones mercury/mariner so it'll be a different box configuration
I think the problem is his old mariner was a Yamaha built one, so has the Yamaha control box configuration and the new ones mercury/mariner so it'll be a different box configuration