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
component, it is not possible for this Manual to
specify the correct torque (tightening force) for all
of the fasteners on your bicycle. Unless a
component is specifically marked, the tightening
torques for the key safety parts are listed below:
Fastener
Tightening Torque Nm
Front and rear wheel nuts
25 +/- 0.5
Handlebar to stem clamp bolts
15 +/- 0.5
Stem to fork steerer clamp bolts
17 +/- 0.5
Quill expander bolt
18 +/- 0.5
Saddle clamp to seat post (allen bolt clamp)
15 +/- 0.5
Saddle clamp to seat post (conventional bolt clamp)
20 +/- 0.5
Seat post to frame clamp (allen bolt clamp)
11 +/- 0.5
Seat post to frame clamp (conventional bolt clamp)
16 +/- 0.5
Any aerodynamic extensions (accessories)
As specified by the mfr.
If you choose to carry out further work on your
own bicycle you must get the correct tightening
torque specifications from the bicycle or
component manufacturer or from your
local 13
dealer
. If you need to make an adjustment
at
home or on a ride, we urge you to exercise
care,
and to have the fasteners you worked on
checked by your
local 13 dealer
as soon
as
possible.
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.
1 Everything Secure?
Make sure nothing is loose. Lift the front wheel
off the ground by 50 to 75 mm (2 to 3”), 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.
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