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This is the left rear suspension. Undo bolt #12 & nut #4 and lift the control arm up as high as you can. The grease nipple will be under the area bolt #1 goes through.
The bearing carrier is the farthest left item on the diagram. Not sure the 06 & 08 Hawkeye are the same. Maybe check with member OPT. He's a Polaris mechanic.