Chery A1 2008 Operating Instructions Manual page 106

Sliding Seat backward and forward to Adjust
As shown in the figure, pull up the adjusting lever at outer front edge of the seat to move it backward and forward. After the seat is adjusted
in place, release the adjusting lever, and then rock the seat backward and forward to make sure it has been locked on its slide rail.
Longitudinal
lever of seat
Headrest
In case of a tail collision by the vehicle behind during traveling, the headrest can restrain movement of head to protect neck vertebrae.
However, the headrest can play the role of protection only when it is adjusted to correct position.
adjusting
Service and Maintenance