7.Test the travel of each brake lever:
-Squeeze each brake lever with strong pressure
-If the brake lever touches the grip, do Steps 1 through 7 again.
WARNING: After you do Steps 1 through 7 again, if either brake lever touches the grip or 
does not work well, have a bicycle service shop repair or adjust the caliper or cantilever
brakes.
Reducing Caliper Brake Noise (Caliper Brake Only)
It is common for caliper brakes to make noise or “squeak” when in use. This noise does not normally indicate a brake problem. The noise may be reduced by following the instructions below:
-Make sure the caliper brakes are adjusted correctly
-Using a small adjustable wrench, bend each caliper arm so the front edge of each brake shoe is the first part to touch the rim
WARNING: Bend each caliper only a small amount. If you bend the caliper arm too far, 
the caliper brake can be damaged and performance of the caliper brake reduced.