h50 strange nuts question

#1
What are these 2 little nuts for? One each side of the output shaft with a little white bolt sticking out the middle of each one. None of my other tecumcies has these.
Thanks.
 
#2
those are the roller bearing retainer clips,there is a slot on the top of the threaded end,turn one clockwise and the other counter clockwise if I remember right. after you do this the side cover will come off.
 
#3
those are the roller bearing retainer clips,there is a slot on the top of the threaded end,turn one clockwise and the other counter clockwise if I remember right. after you do this the side cover will come off.
I thought they were some kind of adjustment. I will not touch them.
Thank you.
 
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