How to replace swingarm bearing 350 4x4?
nohorses is correct. We cust up a larger socket to make the 4 pronged socket to fit the lock ring, and we used a chisel that we ground down (opposite end, not the sharp end) to fit the 17mm Allen key bolts. Once you get that done, the rest is a piece of cake.
One other thing that I took note of was how the rear end was lined up between the 2 bearings, there should be a gap between the swingarm and the frame of maybe 1/8th of an inch. When you put it back together, if you tighten 1 side all the way, the rear end will be pushed to one side more than the other, make sure it's even.