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Check the control cables and the cable housing carefully. If you find rust,
they are loose or worn, have them replaced by a qualified bicycle me-
chanic.
Squeeze each pair of contiguous spokes on each side of the wheel
between your thumb and forefinger. If anyone seems loose, have a qua-
lified bicycle mechanic check the tension and alignment of the wheel.
Check if the tires are too worn, or if there are cuts or dents. If necessary,
have them replaced by a qualified bicycle mechanic.
Check if the rims are too worn and if there are dents, bumps and scra-
tches. If you observe any damage to the rim, consult a qualified bicycle
mechanic.
Check that all parts and accessories are still well fixed and tighten those
that are not.
Check for scratches, cracks or discolorations on the frame, especially in
the area around all the joints of the tube, on the handlebar, on the stem
and on the seat post. These are signs of stress fatigue and indicate that
a piece is at the end of its life cycle and needs to be replaced.
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