Operation Manual

Adjusting the seat post cam action mechanism

The action of the cam squeezes the seat collar around the seat post to hold

the seat post securely in place. The amount of clamping force is controlled by the

tension adjusting nut. Turning the tension adjusting nut clockwise while keeping

the cam lever from rotating increases clamping force; turning it counterclockwise

while keeping the cam lever from rotating reduces clamping force. Less than

half a turn of the tension adjusting nut can make the difference between safe and

unsafe clamping force.

WARNING: The full force of the cam action is needed to clamp the

seatpostsecurely.Holdingthenutwithonehandandturningthe

lever like a wing nut with the other hand until everything is as tight as

you can get it will not clamp the seat post safely.

WARNING: If you can fully close the cam lever without wrapping your

ngersaroundtheseatpostoraframetubeforleverage,andthe

lever does not leave a clear imprint in the palm of your hand, the

tensionisinsufcient.Openthelever;turnthetensionadjustingnut

clockwise a quarter turn; then try again.

C. Brakes

There are three general types of bicycle brakes: rim brakes, which operate by

squeezing the wheel rim between two brake pads; disc brakes, which operate

by squeezing a hub-mounted disc between two brake pads; and internal hub

brakes. All three can be operated by way of a handlebar mounted lever. On some

models of bicycle, the internal hub brake is operated by pedaling backwards.

This is called a Coaster Brake and is described in Appendix C.

WARNING:

1. Riding with improperly adjusted brakes, worn brake pads, or

wheels on which the rim wear mark is visible is dangerous and can

result in serious injury or death.

2. Applying brakes too hard or too suddenly can lock up a wheel, which

could cause you to lose control and fall. Sudden or excessive application

of the front brake may pitch the rider over the handlebars, which may result

in serious injury or death.

 3.Somebicyclebrakes,suchasdiscbrakes(g.11)andlinear-pull

brakes(g.12),areextremelypowerful.Takeextracareinbecoming

familiar with these brakes and exercise particular care when using them.

4. Some bicycle brakes are equipped with a brake force modulator, a

small, cylindrical device through which the brake control cable runs and

which is designed to provide a more progressive application of braking

force. A modulator makes the initial brake lever force more gentle,

progressively increasing force until full force is achieved. If your bike is

equipped with a brake force modulator, take extra care in becoming familiar

with its performance characteristics. Some brake force modulators are