Trail boss 325 axle removal procedure?

I’ve searched everywhere I know to look and haven’t found any info that helps me with this. I’m working on someone else’s 2001 Trailboss 325 that needs rear axle bearings and I’ve never dealt with how they have the axle put together. I only have the rear wheels off and both outer snap rings off. How do I get the rest apart? I’ve looked up parts places to see everything apart but I still don’t get it. I read one place says the nut retainer is suppose to just slip out but if that’s true I don’t see what kept them in place. The snap rings were on the retainers themselves not the axle. I’m just lost with this. Any help is great appreciated. thanks