Jamis Bicycle - A. Wheels

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4. Tech
It’s important to your safety, performance and enjoyment to understand how things work on your bicycle. We urge you to ask your dealer how
to do the things described in this section before you attempt them yourself, and that you have your dealer check your work before you ride the
bike. If you have even the slightest doubt as to whether you understand something in this section of the Manual, talk to your dealer. See also
Appendix A, B, C and D.
A. Wheels
Bicycle wheels are designed to be removable for easier transportation and for repair of a tire puncture. In most cases, the wheel axles are
inserted into slots, called “dropouts” in the fork and frame, but some suspension mountain bikes use what is called a “through axle” wheel
mounting system.
If you have a mountain bike equipped with through axle front or rear wheels, make sure that your dealer has given you the
manufacturer’s instructions, and follow those when installing or removing a through axle wheel. If you don’t know what a through
axle is, ask your dealer.
Wheels are secured in one of three ways:
 •Ahollowaxlewithashaft(“skewer”)runningthroughitwhichhasanadjustabletensionnutononeendandanover-centercamonthe
other (cam action system, fig.8 a & b)
WARNING: An insufficiently tightened stem clamp bolt, handlebar clamp bolt or bar end extension clamping bolt may
compromise steering action, which could cause you to lose control and fall. Place the front wheel of the bicycle between your
legs and attempt to twist the handlebar/stem assembly. If you can twist the stem in relation to the front wheel, turn the handlebars in
relation to the stem, or turn the bar end extensions in relation to the handlebar, the bolts are insufficiently tightened.
D. Control position adjustments
The angle of the brake and shift control levers and their position on the handlebars can be changed. Ask your dealer to make the adjustments
for you. If you choose to make your own control lever angle adjustment, be sure to re-tighten the clamp fasteners to the recommended torque
(Appendix D or the manufacturer’s instructions).
E. Brake reach
Many bikes have brake levers which can be adjusted for reach. If you have small hands or find it difficult to squeeze the brake levers, your dealer
can either adjust the reach or fit shorter reach brake levers.
WARNING: The shorter the brake lever reach, the more critical it is to have correctly adjusted brakes, so that full braking power
can be applied within available brake lever travel. Brake lever travel insufficient to apply full braking power can result in loss of
control, which may result in serious injury or death.