My chair tilts to the left when I sit. It’s not the floor – I checked. What’s broken inside, and can I fix it?
A leaning chair usually means a damaged mechanism, bent base, or broken seat plate.
| Probable Cause | How to Check | Fix |
|---|---|---|
| Seat plate bent | Remove seat, look for warped metal | Replace seat plate ($20-40) |
| Gas cylinder tilted | Cylinder not vertical in base | Remove and reseat cylinder |
| Base star bent | Set base on flat surface – does it rock? | Replace 5-star base ($30-60) |
| Mechanism uneven | Look for cracked welds or missing bolts | Replace mechanism ($50-100) |
Quick diagnostic: Put the chair on a flat floor. Spin it. If it wobbles unevenly, the base is likely bent. If it sits flat but leans when you sit, suspect seat plate or mechanism. For most users, replacing the gas cylinder and base together solves side lean.
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