Quintana Roo bicycle Owner's Manual - page 12
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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.
WARNING: A quill stem’s Minimum Insertion Mark must not be
visible above the top of the headset. If the stem is extended
beyond the Minimum Insertion Mark the stem may break or
damage the fork’s steerer tube, which could cause you to lose
control and fall.
WARNING: On some bicycles, changing the stem or stem
height can affect the tension of the front brake cable, locking
the front brake or creating excess cable slack which can make
the front brake inoperable. If the front brake pads move in
towards the wheel rim or out away from the wheel rim when the
stem or stem height is changed, the brakes must be correctly
adjusted before you ride the bicycle.
Some bicycles are equipped with an adjustable angle stem. If your bicycle
has an adjustable angle stem, ask your dealer to show you how to adjust
if. Do not attempt to make the adjustment yourself, as changing stem angle
may also require adjustments to the bicycle’s controls.
WARNING: Always tighten fasteners to the correct torque. Bolts
that are too tight can stretch and deform. Bolts that are too
loose can move and fatigue. Either mistake can lead to a
sudden failure of the bolt, causing you to lose control and fall.
Your dealer can also change the angle of the handlebar or bar end
extensions.
WARNING: Some people have claimed that extended riding
with a saddle which is incorrectly adjusted or which does not
support your pelvic area correctly can cause short-term or
long-term injury to nerves and blood vessels, or even
impotence. If your saddle causes you pain, numbness or other
discomfort, listen to your body and stop riding until you see
your dealer about saddle adjustment or a different saddle.
C. Handlebar Height and Angle
Your bike is equipped either with a “threadless” stem, which clamps on to
the outside of the steerer tube, or with a “quill” stem, which clamps inside
the steerer tube by way of an expanding binder bolt. If you aren’t absolutely
sure which type of stem your bike has, ask your dealer.
If your bike has a “threadless” stem
(fig. 6) your dealer may be able to change handlebar height by moving
height adjustment spacers from below the stem to above the stem, or vice
versa. Otherwise, you’ll have to get a
stem of different length or rise. Consult
your dealer. Do not attempt to do this
yourself, as it requires special knowledge.
If your bike has a “quill” stem (fig. 7)
you can ask your dealer to adjust the
handlebar height a bit by adjusting stem
height.
A quill stem has an etched or stamped
mark on its shaft which designates the
stem’s “Minimum Insertion” or “Maximum
Extension”. This mark must not be visible
above the headset.
WARNING: When making saddle angle adjustments with a
single bolt saddle clamp, always check to make sure that the
serrations on the mating surfaces of the clamp are not worn.
Worn serrations on the clamp can allow the saddle to move,
causing you to lose control and fall.
Always tighten fasteners to the correct torque. Bolts that are
too tight can stretch and deform. Bolts that are too loose can
move and fatigue. Either mistake can lead to a sudden failure of
the bolt, causing you to lose control and fall.
Note:
If your bicycle is equipped with a suspension seat post, the
suspension mechanism may require periodic service or maintenance. Ask
your dealer for recommended service intervals for your suspension seat
post.
Small changes in saddle position can have a substantial effect on
performance and comfort. To find your best saddle position, make only one
adjustment at a time.
WARNING: After any saddle adjustment, be sure that the saddle
adjusting mechanism is properly seated and tightened before
riding. A loose saddle clamp or seat post clamp can cause
damage to the seat post, or can cause you to lose control and
fall. A correctly tightened saddle adjusting mechanism will
allow no saddle movement in any direction. Periodically check
to make sure that the saddle adjusting mechanism is properly
tightened.
If, in spite of carefully adjusting the saddle height, tilt and fore-and-aft
position, your saddle is still uncomfortable, you may need a different saddle
design. Saddles, like people, come in many different shapes, sizes and
resilience. Your dealer can help you select a saddle which, when correctly
adjusted for your body and riding style, will be comfortable.