Check the air pressure in the tire. The correct tire pressure will be marked on the side of the tire.
Please ensure that the tire pressure is between the minimum and maximum required pressure. If
you can't find any recommended pressure value, 45psi is a suitable pressure for most tires. If the
tire is relatively narrow, 60psi is suitable. As a common rule , you can simply judge with your thumb.
For example, when sitting in the bike, you can check the tire pressure as follows: If you press your
thumb against the tire, the tire will not be easily pressed down by your thumb and change its
shape.
Check tires and rims for damage, cracks or deformation, and embedded particles such as glass or
sharp Stone fragments. If you find any cuts, tears or holes, please don't ride.
11.Before each ride, please check:
• The lamps (if any) can work and be properly fixed
• The brake can work normally and be properly fixed There is no oil leakage in the housing and
accessories of the brake .
• There are no foreign bodies and damages in tires and no deformation in wheels
• The battery is installed correctly and securely
• The tire has enough tread depth
• Tighten all bolts and nuts, and check that all quick-release wrenches are in the correct fixed
position. When not riding, check that all bolts and nuts are stable before use.
• The frame and front fork are not damaged
• Handlebar and stem are connected correctly and fixed properly. And the position is correct.
• Seatpost and saddle are stable and positioned correctly. Try to rotate or toggle up or down, and
the seat cushion should not move at all.
• The frame, front fork and other parts related to safety, such as brakes and wheels, if seriously
worn, will affect the use safety.
•If the service time of spare parts exceeds the expected service life, it may break down
unexpectedly, resulting in falling down and serious injury.
12.Torque Parameters:
Stem 45 in-lbf (5.1 Nm)
Rear derailleur 70-88 in-lbf (8-10 Nm)
Handlebar 45 in-lbf (5.1 Nm)
Rear axle core is 133 in-lbf (15 Nm)
Seatpost clamp 55 in-lbf (6.2 Nm)
Shifter 25-30 in-lbf (2.8-3.4 Nm)