I decided to check out the rear axle since my bike has 23k on it, to check for signs of bearing failure and axle wear.
Begin by losening the main bolt
The main bolt is a huge 46mm jobbie that is on very tight I borrowed Craigs socket to get it off, at this point you just want to get it loose, since its easiest to do with the wheel on the ground first loosen this bolt with the wheel down on the sidestand.
Remove the rear wheel
Remove the Chain Gaurd
It is held in place by 2 screw type plastic clips, 2 hex bolts, and 2 brackets that hold the brake hoses.
Once you get the chain gaurd off carfull not to lose the retaining backers that hold the hose brakets
Remove the lower air gaurd
Remove the main bolt and the washer, then loosen the pinch bolt on the top rear of the swingarm, then use the spanner from the tool kit to get enough slack in the chain to unhook it from the sprocket.
Remove the rear hub
Inspect the hub for rough bearings, if it turns notchy, noisy, or fits loosely then it should be replaced, put some grease on it anyhow. There is a spacer inside that you could mistake for a bearing, its just a spacer and it fits in there loosely.
Remove the rear brake
Inspect the axle for scoring
If you have a dial indicator and a v block check it for runout as well, check for damage, replace if nessisary, if not grease that puppy up , then inspect the needle bearings, if they are good repack them with grease.
My bearings all turned smooth and easy, they were all tight, and the needle bearings had grease, I just packed in a bit more, nothing bad to report, the axle was in good shape, I cleaned up my hub and switched the sprocket around. I also cleaned off the grime from the chain guide, since you have access to it now is the time to clean it!