Just be glad your not working on a 80's Yammy.
Thats what mine was, and all went well!!
When I did mine what i did was put a jack under the leg and just gave it a couple of pumps to stabilize it.
Then I removed the steering cable.
Then all side bracket bolts, Be careful here, they can be corroded pretty bad!
Now the 3 bolts holding the bracket to the boat.
Here is the worse part! Undo the steering tube bolt, now you will have to hammer the crap out of the bracket to get it off the tube. No words of wisdom here, using chisel hammer what have you and how ever you have to bang that thing off!! Spray it, heat it, and it will go!
Remember, the only thing holding the motor now is the one side bracket!
After that is off the rest is easy!! I left mine apart the whole winter with the jack under it.
When you put it back toghter make sure all bolts are clean and have a small amount of antiseize on them!! Reassemble and enjoy!!