TVS Apache RTR 160 4V Owner's Manual page 53

SEAT ASSEMBLY
The seat lock (1) is located at the rear end of the
vehicle below the tail lamp assembly.
Seat removal
To remove the seat assembly, insert the ignition key
into the seat lock and turn it in clockwise direction.
Take out the seat assembly by lifting it from the rear
end and gently tapping it on the front end.
1
Caution
Make sure that the seat assembly is locked securely in
position after reassembly.
50
Seat re-assembly
Locate the seat assembly into the frame. Push it little
foreword and press at rear end till you hear the 'click'
sound.