Step 1: Axle prep
Once the wheel is ready to be re-attached to the bike, before inserting the axle, make sure that it is properly prepared. The axle should be cleaned of any grime or dirt and then coated with a fresh layer of grease. Most bearing or axle grease will do. Force the wheel up tight against the adjustment bolts and tighten the axle nut enough to hold the wheel in place, but do not cinch it down.
Step 2: Adjust the chain
Loosen the lock nut on the chain tensioner on each side of the swingarm. Once loose, thread the adjustment bolts in or out to reach the desired chain slack (out to tighten the chain, in to loosen it). Use the marks on the axle blocks to make sure both sides are equally adjusted and the wheel is square.
Everyone has a favorite tip for the proper chain adjustment. We try to leave enough slack so that the chain is tight when the suspension is fully compressed. You can check this by leaning over the seat, grabbing the swingarm and compressing the shock to view the difference in tension. A friend can help get more compression and a more accurate gauge. If the chain becomes taught before the suspension is fully compressed, it is affecting the way your bike handles during a ride and creating unnecessary stress and wear on the chain, sprocket, axle and countershaft
Step 3: Tighten the axle
Once you are satisfied with the chain tension, put a rag between the chain and sprocket on the top side of the swingarm. Rotate the wheel backwards to cram the rag between the chain and sprocket which forces the wheel tight against the tensioning bolts. Use a torque wrench to tighten the axle nut to the specified tension, lube the chain and go ride.