PROPAIN tyee 2020 - Mechanical Safety Check

// MANUAL
1. Does your bike have suspension? If so, check Section 4.F. Suspension can change
the way a bicycle performs. Follow the suspension manufacturer’s instructions for use,
adjustment and care.
C. MECHANICAL SAFETY CHECK
Routinely check the condition of your bicycle before every ride.
• Nuts, bolts screws & other fasteners: Because manufacturers use a wide variety of
fastener sizes and shapes made in a variety of materials, often differing by model and com-
ponent, the correct tightening force or torque cannot be generalized. To make sure that the
many fasteners on your bicycle are correctly tightened, refer to the Fastener Torque Spe-
cications in Appendix E of this manual or to the torque specications in the instructions
provided by the manufacturer of the component in question. Correctly tightening a fastener
requires a calibrated torque wrench. A professional bicycle mechanic with a torque wrench
should torque the fasteners on you bicycle. If you choose to work on your own bicycle, you
must use a torque wrench and the correct tightening torque specications from the bicycle
or component manufacturer. If you need to make an adjustment at home or in the eld, we
urge you to exercise care, and to have the fasteners you worked on checked by a bicycle
dealer as soon as possible Note that there are some components which require special tools
and knowledge. In Sections 3 and 4 we discuss the items which you may be able to adjust
yourself. All other adjustments and repairs should be done by a qualied bicycle mechanic.
WARNING: CORRECT TIGHTENING FORCE ON FASTENERS –NUTS, BOLTS, SCREWS–
ON YOUR BICYCLE IS IMPORTANT. TOO LITTLE FORCE, AND THE FASTENER MAY NOT HOLD
SECURELY. TOO MUCH FORCE, AND THE FASTENER CAN STRIP THREADS, STRETCH, DEFORM OR
BREAK. EITHER WAY, INCORRECT TIGHTENING FORCE CAN RESULT IN COMPONENT FAILURE,
WHICH CAN CAUSE YOU TO LOSE CONTROL AND FALL.
• Make sure nothing is loose. Lift the front wheel off the ground by two or three inches, then let
it bounce on the ground. Anything sound, feel or look loose? Do a visual and tactile inspection of
the whole bike. Any loose parts or accessories? If so, secure them. If you’re not sure, ask someone
with experience to check.
• Tires & Wheels: Make sure tires are correctly inated (see Section 4.G.1). Check by putting one
hand on the saddle, one on the intersection of the handlebars and stem, then bouncing your weight
on the bike while looking at tire deection. Compare what you see with how it looks when you know
the tires are correctly inated; and adjust if necessary.
• Tires in good shape? Spin each wheel slowly and look for cuts in the tread and sidewall. Repla-
ce damaged tires before riding the bike.
• Wheels true? Spin each wheel and check for brake clearance and side-to-side wobble. If a
wheel wobbles side to side even slightly, or rubs against or hits the brake pads, take the bike to a
qualied bike shop to have the wheel trued.