650sx drive shaft bearing

So I found little information on the 650sx thru hull bearing. My question is if I buy the entire bearing how do I install it and how do I grease the bearing and drive shaft? Sorry but I’m new to a lot of this if there’s a step by step that I can go by and someone can point me in the right direction. Thanks I don’t like starting new threads but I want to make sure my ski is ready for the summer.
 
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