33
FIGURE 3.43
Training wheels: clearance
from ground
1/4”
Accessories
In addition to the parts already discussed in this
chapter, your bicycle might have accessories
such as fenders, lights, chainguard, training
wheels, or kickstand. Each month, check the
accessories to make sure they are correctly
attached. If the part is loose or not in alignment,
adjust or tighten the part, or take your bicycle to
your retailer for service.
To install a light bulb
The bulb has markings that indicate the
correct voltage. When purchasing spares or
replacements, take the bulb with you to the
store to make sure you purchase the correct
bulb for your light.
1. Find the lens set screw on the rear of the light.
2. Turn the screw counterclockwise. Remove it.
3. Turn the lens one quarter-turn clockwise. Pull
the lens assembly off of the
bulb attachment.
4. Turn the bulb counterclockwise. Remove it.
• Be careful not to crush the glass of the bulb.
Do not dislodge the wire in the base of the
bulb attachment.
5. Turn a new bulb in until it is slightly tight.
6. Put the lens on the bulb attachment. Turn the
lens one quarter-turn counterclockwise.
7. Put the lens set screw in the rear of the light.
Tighten the screw.
Make sure the new bulb operates. If it does not,
check the wires for correct position, and make
sure that the new bulb does not have damage.
Frameset (frame and fork)
The frame is the backbone of the bicycle, the
part to which other parts, including the fork,
attach. The fork holds the front wheel and is
controlled or steered by the handlebar. The
maintenance of the frameset is critical to your
safety. Before attempting any work on the
frame, fork, or components; or installing any
accessory; read the section
Warning about
mechanical work
on page 12.
The frame or fork may be constructed from
a variety of materials, including steel alloy or
aluminum alloy.
General information
Excessive heat, such as that used in powder
coating, or any open flame, may damage
the adhesive which joins the frame parts on
some framesets. Do not exceed 150°F (65°C)
exposure to your frame.
A frameset with a round or cylindrical seatpost
uses one of three common sizes of seat lugs
designed to accept seatposts with 25.92 to 26.0
mm, 27.12 to 27.2mm, or 30.82 to 30.9 mm outer
diameter. The seatpost should be measured for
conformity to this tolerance prior to installation.
Use correct lubrication (see page 35) to prevent
seizing of the seatpost to the seat tube.
When cleaning frame parts, do not use solvents
or harsh chemicals. Remove road film with
a soft rag and a mild detergent and water
solution. Use of industrial solvents for cleaning
or paint removal may damage not only the paint
but also the adhesive which joins the frame
parts.
Tolerances for press fits and thread fits are
critical. Pressing a part which is too large,
or misaligned, may break the frame or part.
Over-tightening a threaded fastener may ruin
the threads or break the part. Be sure bottom
bracket and rear derailleur threads are clean and
well greased before insertion. Start threads by
hand, not with a wrench.