Yamaha Timberwolf Parts How Do You Remove The Pivot Studs/bolts From The Rear Swing Arm On A '94 Yamaha Timberwolf?

How do you remove the pivot studs/bolts from the rear swing arm on a '94 Yamaha Timberwolf? - yamaha timberwolf parts

I will be the nuts and bolts of the dynamic, but I can not the two pillars on the outside and wondering what I need. Any help would be appreciated. Thanks