BMW F 800 GS Rider's Manual page 84

Locking flap 5 is unlocked.
7
Fold open locking flap 5 all the
way manually.
82
z
Hook Topcase into front hold-
ers 6 of Topcase retaining
plate.
Press Topcase onto Topcase
retaining plate at rear and fold
in locking flap 5.
Fold in red lever 4.
Locking flap 5 is blocked.
Check firm seating of Topcase.
Fold in carrying handle and
lock Topcase.