ADJUSTING QUICK RELEASES
Step 2: Use a 10 mm wrench to hold the nut in the back of the frame quick release. Then turn the quick release clockwise if it was too loose or counter-clockwise if it was too tight, and repeat your test in Step #1 until it is just right.
Step 3: Wheel quick releases are the easiest to adjust. If it is too tight, hold the quick release lever with one hand, while with the other turn the other end on the axle counter-clockwise; if it is too loose, turn clockwise.