Stand back a little further and take/post a pic of the whole pump and nozzle. somethings not right at all with you're hardware.
Parts look like Berk Jetovator and parts look like a Bushwhacker trim nozzle hacked together maybe?

Here's a breakdown of all the parts of a Jet-O-Vater, which, at the end of your steering cable looks right. The rest dont. Get a pic of the steering cable, jet0vater cable inside the transom as well. Just wwent through all this, twice, chasing down all the parts for the pair of Jetovaters I recently sold. With all the correct parts, they work well!

Some of the missing parts if I'm right, ARE still available, pricey as hell though, in which case I'd look for a complete used Jetovater (Sold mine for $250 each), or as Chris said, replace the whole thing with a Place Diverter, which is another animal altogether. Tom or Jim might have the used parts you'd need though. The expensive stuff, you already have........The transom seal/steering tube/spring and related hardware is over $300 to replace that stuff.
Ray