Fork-lift truck (1) comprising a lift module (2) and an end module (3), wherein the end module (3) and the lifting module are connected by a waist (4), wherein the waist (4) can articulate at least in a horizontal plane for manoeuvring the fork-lift truck (1) in a turn, wherein said lift module (2) comprises a mast (5) comprising a load carrier (18), which is operable to lift loads above ground level, wherein the mast (5) comprises at least one stay assembly (6) attached to the lift module (2) and the end module (3) such that they are connected to each other,, wherein the stay assembly (6) is movably connected to the lift module (2) and/or the end module (3). The invention is further related to a method of modifying a fork-lift truck (1).
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