25hp 2stroke yamaha impeller

[boater1234]

I just picked up a nearly new/flawless 2006 25hp 2stroke yamaha with less then 10hrs that was only used in freshwater,not one drop of corrosion.It has had very little use but it is still 8yrs old and i don't know when the impeller was last changed so i figure it is a good idea to do it.I watched a video on youtube and it seems very easy,the only question i have is when i do the shift linkage it seems like you can't really mess it up if i'm correct,that's why i need some input,it just seems like you just tighten the little nut all the way down on the shift linkage shaft then connect the shaft together with the upper nut,then once the upper nut can't go anymore down and it's tight u just take the bottom nut and go back towards the upper nut till it's tight,then hold the upper nut in place and snug the bottom nut to it and done,is this correct?I'm sure someone here has done it before so this is the right place to ask.

I just want to make sure i have this right,this will be my first impeller change and i'm investing $2100 for this motor which i know is a great deal.I have come by a ton of them and people were asking way more and for older motors so it was either a 2001 25hp merc in great shape for $1875 or a almost flawless 2006 25hp 2stroke yamaha for a few hundred more,i went with the yamaha.Thanks for any help.