IKEA · Chairs & Stools
How to assemble IKEA SÖDERHAMN Sofa Section
Step-by-step IKEA SÖDERHAMN Sofa Section assembly: 15 illustrated steps, an animated video, the hardware list and the tools you need — following the official instructions (AA-568227-6 + AA-2640985-1).
- 15 illustrated steps
- 13 steps in the manual
- 2:19 video
- 186×99×83 cm cm

What you need
Tools
- Spanner (included)
You’ll need: tool 120202 (1×) — the socket tool that comes in the box.
Hardware in the box
| Part no. (as printed in the manual) | Qty |
|---|---|
| 124149 | 4× |
| 124130 | 8× |
| 100854 | 12× |
| 100712 | 8× |
| 112121 | 4× |
| 124150 | 2× |
| 124127 | 1× |
Step-by-step assembly

Step 1
Screw the 4 legs (124149) into the corners of the seat frame.
Stand the frame on its back edge, underside towards you. Turn the legs in by hand.

Step 2
Screw the 8 threaded rods (124130) into the backrest.
Lay the backrest flat. The rods go into the holes along the channel near its lower edge.

Step 3
Lower the seat frame onto the rods — 2 people.
Its back edge goes down onto the backrest, the rods through the holes in the rail.

Step 4 · manual step 3
Fit a washer (100854) and a nut (100712) on each rod.
8 of each, on the rail inside the seat frame. Turn the nuts on by hand.

Step 5 · manual step 4
Tighten all 8 nuts with the tool (120202).
Go round them in turn until the seat frame sits tight against the backrest.

Step 6 · manual step 4
Tip the section over onto its legs.
Lift it together — 2 people.

Step 7
Now the cover.
Cover manual AA-2640985-1, steps 1–9.

Step 8 · manual step 1
Lay the cover on the frame and open the 2 seat-pocket zips.
The back part of the cover stays folded up for now.

Step 9 · manual step 2–3
Slide a seat cushion into each pocket and zip it closed.
Right side up, pushed well into the corners — see the info boxes in steps 2 and 3.

Step 10 · manual step 4
Turn the cover over the cushions and pull it over the backrest.

Step 11 · manual step 5–6
Pull the cover down over the seat frame all round.
Press the seat down. The cushions should sit square, the seams on the corners (manual steps 5–6).

Step 12 · manual step 7
Smooth the cover along the joint between seat and back.

Step 13 · manual step 8
Fold the cover edge under the frame and fasten the hook-and-loop strips.
All the way round the underside.

Step 14 · manual step 9
Put the covers on the 4 back cushions and zip them closed.
2 large and 2 small cushions.

Step 15 · manual step 9
Place the back cushions on the sofa.
The 2 large ones against the backrest, the 2 small ones in front.
Tips & safety
- Keep the joining fittings The 4 bolts (112121), 4 washers, 2 connectors (124150) and the clamp (124127) join this section to another SÖDERHAMN section — see the last page of the frame manual.
- Check the care label before ironing Only iron the cover if the label shows the iron symbol — see page 2 of the cover manual.
Official instructions
This guide follows IKEA’s official assembly instructions (AA-568227-6 + AA-2640985-1). Keep the printed manual to hand — if anything differs, the manual is right.



