Step 7
Insert tube (6) to back upright frame (23), choose
right height. Rest backbone (18) on tube (6)
Step 8
Insert swing frame (27) to back upright frame (23) using screw M10 (4), washer ø10, 2 x sleeve
washer M10 and knob. Sidle foam rod (39) into swing frame opening (27) secure with screw M8
(3), washer ø8 (32) and nut M8. Put foam (11) at the end of foam rod. Repeat action with second
swing frame (27).