Are you talking about preload or dampening? Remember too, the rear is only 1/2 the suspension.
The rear preload is a knob on the left side. Turning it clockwise will increase the preload which will make the suspension lower and harder. By default, it is set for a 150lb rider (not counting riding gear), which is 13 clicks counterclockwise from fully seated.
The rear dampening is an adjuster screw on the rear of the rear shock. It, too, is set from the factory for 150 pounds, at 1 1/4 turns out. Clockwise increases the dampening.
Then there is the front... (also set by the factory for 150 pound rider). You can find all this in the owner's manual, starting on page 225.