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BOSCH PERFORMANCE LINE
Bicycle Owner’s Manual
23
hours of riding:
• Squeeze the front brake and rock the bike forward and
back. Everything feel solid? If you feel a clunk with each
forward or backward movement of the bike, you probably
have a loose headset. Have your dealer check it.
• Lift the front wheel off the ground and swing it from
side to side. Feel smooth? If you feel any binding or
roughness in the steering, you may have a tight headset.
Have your dealer check it.
• Grab one pedal and rock it toward and away from the
centerline of the bike; then do the same with the other
pedal. Anything feel loose? If so, have your dealer check
it.
• Take a look at the brake pads. Starting to look worn
or not hitting the wheel rim squarely? Time to have the
dealer adjust or replace them.
• Carefully check the control cables and cable housings.
Any rust? Kinks? Fraying? If so, have your dealer replace
them.
• Squeeze each adjoining pair of spokes on either side
of each wheel between your thumb and index finger. Do
they all feel about the same? If any feel loose, have your
dealer check the wheel for tension and trueness.
• Check the tires for excess wear, cuts or bruises. Have
your dealer replace them if necessary.
• check the wheel rims for excess wear, dings, dents and
scratches. Consult your dealer if you see any rim damage.
• Check to make sure that all parts and accessories are
still secure, and tighten any which are not.
• Check the frame, particularly in the area around all
tube joints; the handlebars; the stem; and the seatpost
for any deep scratches, cracks or discoloration. These are
signs of stress-caused fatigue and indicate that a part is
at the end of its useful life and needs to be replaced. See
also Appendix B.
WARNING: Like any mechanical device, a bicycle and
its components are subject to wear and stress.
Different materials and mechanisms wear or fatigue
from stress at different rates and have different life cycles.
If a component’s life cycle is exceeded, the component can
suddenly and catastrophically fail, causing serious injury
or death to the rider. Scratches, cracks, fraying and
discoloration are signs of stress-caused fatigue and
indicate that a part is at the end of its useful life and needs
to be replaced. While the materials and workmanship of
your bicycle or of individual components may be covered
by a warranty for a specified period of time by the
manufacturer, this is no guarantee that the product will
last the term of the warranty. Product life is often related
to the kind of riding you do and to the treatment to which
you submit the bicycle. The bicycle’s warranty is not
meant to suggest that the bicycle cannot be broken or will
last forever. It only means that the bicycle is covered
subject to the terms of the warranty. Please be sure to
1. Ask your dealer for copies of the manufacturer’s
installation and service instructions for the components
on your bike, or contact the component manufacturer.
2. Ask your dealer to recommend a book on bicycle
repair.
3. Ask your dealer about the availability of bicycle
repair courses in your area.
We recommend that you ask your dealer to check the
quality of your work the first time you work on something
and before you ride the bike, just to make sure that you
did everything correctly. Since that will require the time of
a mechanic, there may be a modest charge for this service.
We also recommend that you ask your dealer for
guidance on what spare parts, such as tires, inner tubes,
light bulbs, batteries, Pach Kit, lubricants etc. it would be
appropriate for you to have once you have learned how to
replace such parts when they require replacement.
A. Service Intervals
Some service and maintenance can and should be
performed by the owner, and require no special tools or
knowledge beyond what is presented in this manual.
The following are examples of the type of service you
should perform yourself. All other service, maintenance
and repair should be performed in a properly equipped
facility by a qualified bicycle mechanic using the correct
tools and procedures specified by the manufacturer.
1. Break-in Period: Your bike will last longer and work
better if you break it in before riding it hard. Control
cables and wheel spokes may stretch or “seat” when a
new bike is first used and may require readjustment by
your dealer. Your Mechanical Safety Check (Section 1.C)
will help you identify some things that need readjustment.
But even if everything seems fine to you, it’s best to
take your bike back to the dealer for a checkup. Dealers
typically suggest you bring the bike in for a 30 day
checkup. Another way to judge when it’s time for the first
checkup is to bring the bike in after three to five hours of
hard off-road use, or about 10 to 15 hours of on-road or
more casual off-road use. But if you think something is
wrong with the bike, take it to your dealer before riding it
again.
2. Before every ride: Mechanical Safety Check (Section
1.C)
3. After every long or hard ride; if the bike has been
exposed to water or grit; or at least every 100 miles:
Clean the bike and lightly lubricate the chain’s rollers with
a good quality bicycle chain lubricant. Wipe off excess
lubricant with a lint-free cloth. Lubrication is a function of
climate. Talk to your dealer about the best lubricants and
the recommended lubrication frequency for your area.
4. After every long or hard ride or after every 10 to 20
