6/Chain Tension For Single Speed Bicycles - Decathlon BTWIN User Manual And Guarantee

Caution:
Headset adjustment requires special tools and training, and should only be
perfor- med by your bike dealer. Further adjustment of the rotor is covered in
the brake system section.

6/Chain tension for single speed bicycles

The chain transmits the energy that you supply when you pedal to the wheel. As
with cars, a "gearbox" is there to adapt the speed of the engine (your legs) to
that of the wheels.
A correctly stretched chain moves up or down about 1 cm.
Tension is adjusted by advancing for bringing back on the back wheel.
Frequently check tension and the condition of the chain: it should always be
lubri- cated and clean.
Warning :
A chain should never cross,
it will wear prematurely and may break