OMC Ball gear replacement

[shu9265]

OK guys, I need your help again.

Friend has an OMC Stringer outdrive, while on the Lake lost all forward and reverse movement.

It is apparently the "ball gears"

My question is what is gonna be in my way when I remove the outdrive ?

Are there any cables ? shift levers? or anything I need to be aware of that are going to be damaged if I am not careful ?

Anyone have any links to exploded views of these outdrives ?

Thanks in advance, Bill