The Lightweight tropical rucksack is attached to the frame on the lower bars. The lower position is the standard, but can also be attached to the frame in an ‘Upper Position’. If you havent done this before it can be quite tricky.
Attaching in the Lower Position
If you have the back of the rucksack facing you you will see two straps and buckles like those in the above picture.
Put the rucksack down with these straps facing towards you. Then place the rucksack frame on top. The curved section is towards you with the middle frame bar positioned as in the photograph.
Place the two straps between the three cargo buckles. Loop one of the straps through its own buckle and back on itself. Repeat with the other strap.
Next secure the sides of the rucksack to the frame using the frame securing straps. The result looks like below……