Lever-Type Office Chair

The reclining, resetting operations, and precautions for lever-type office chairs are as follows:

Reclining Operation

1. Activate Adjustment Mode:
   A metal lever is usually located beneath the seat. Pull the lever backward to enter adjustable mode for the backrest. At this point, the backrest is no longer fixed and can adjust its angle according to body movements.

2. Adjust Recline Angle:
   Lean back slowly, using your body weight to push the backrest backward. Some high-end models support segmented locking functionality (e.g., 100°, 120°, 150°). When you hear a “click,” it indicates that the current angle is locked. If you need to fix a non-preset angle, release the lever after adjusting to the desired position, and the backrest will lock automatically.

3. Special Function Adaptation:
   If the chair is equipped with a “rocking function” (allowing slight forward and backward movement), disable this mode first before adjusting the recline. Otherwise, functional conflicts may cause adjustment failure.

Resetting Operation

1. Release Lock Mode:
   Pull the lever again to disengage the backrest from the current locked angle, restoring adjustable mode.

2. Return to Upright Position:
   Lean forward or gently push the backrest with your hand to return it to an upright position of approximately 90°. Some chairs have an “upright lock” position; ensure the backrest is fully pressed against the seat before releasing the lever. If the chair is equipped with an “upright lock button,” press it to prevent accidental reclining of the backrest.

Usage Precautions

1. Angle Limitation:
   The maximum recline angle for most office chairs is 150°-170°. Exceeding this design range may result in structural damage or tipping risks.

2. Weight Capacity:
   Individuals who are overweight (generally recommended ≥100kg) should confirm the chair’s weight capacity to avoid component breakage due to excessive weight.

3. Functional Differences:
   Low-cost chairs may lack angle-locking functionality and require continuous body control to maintain the backrest position. High-end models should have their unlocking mechanisms checked regularly for stiffness. If adjustment is difficult, apply a small amount of lubricant. Avoid forcing operations that may damage components.

4. Safety Inspection:
   Regularly check the flexibility of components such as the lever and locking mechanism to ensure there is no looseness or abnormal noise, thereby extending the chair’s service life.