Office Chair Recline Angle Adjustment

Adjusting the recline angle of an office chair requires selecting the appropriate method based on the chair type. Here are the common adjustment steps and precautions:

I. Basic Adjustment Steps

1. Unlock the Recline Function
   The adjustment handle of most office chairs is located on the right side of the seat (a few on the left), and it can be in the form of a lever, knob, or pull rod. Sit up straight and gently pull the handle. You will hear a 'click' sound indicating that the lock has been released. If the chair is equipped with an independent recline lock (such as high-end models), you need to first pull up the locking switch under the seat.
2. Adjust the Recline Angle
   Slowly lean back while continuously pulling the handle. The backrest will gradually recline with the pressure. Release the handle when you reach a comfortable angle, and it will automatically lock.

• Mechanical Knob Type: Rotate the knob on the base (usually marked with arrow directions) to control the resistance. You need to manually test the tightness.
• Pneumatic Rod Linkage Type: Adjust through your body's center of gravity. When reclining, gently push the seat towards the backrest to activate the cushioning function. Some high-end models support synchronous adjustment of the armrests.

3. Return to the Upright Position
   Pull the handle or knob again, and the backrest will bounce back to the initial position with the assistance of the pneumatic device.

II. Detailed Explanation of Different Adjustment Methods

1. Lever Adjustment System
   Gently pull or push the adjustment lever under the seat (on the right or left) to release the lock. Adjust your body weight to lean back and then adjust the lever to a comfortable angle and lock it.
2. Knob Adjustment System
   Locate the knob at the lower center of the seat. Rotate it clockwise to increase the recline resistance and counterclockwise to decrease it. Some chairs have a separate knob to adjust the angle.
3. Pneumatic Adjustment System
   The pneumatic lever shares the same lever as the height adjustment. Push it in different directions to adjust the recline angle, and gently pull the lever to lock it.
4. Smart Touch Type
   Set the angle through the buttons on the backrest or an APP. Some models can remember common preferences (such as the one-click synchronization design of the Sihoo M1).

III. Scientific Angle Recommendations

1. Office Mode (60°-90°)
   Keep your line of sight level with the top of the screen, and let your neck hang naturally to reduce cervical spine pressure.
2. Rest Mode (90°-135°)
   You need to use a footrest to distribute the pressure on your legs. For fabric chairs, it is recommended to recline no more than 130°, and for leather chairs, it can be slightly more (but long-term large-angle reclining will accelerate material aging).
3. Resistance Fine-tuning
   Rotate the black cylinder at the front end of the gas rod clockwise to increase the resistance (suitable for people with a heavier weight) and counterclockwise to decrease it.

IV. Precautions

1. Avoid sudden force when reclining to prevent the pneumatic rod from losing control.
2. Regularly check whether the adjustment parts are loose, especially for chairs with mechanical knobs.
3. Long-term large-angle reclining on leather seats may accelerate material aging, so control the frequency of use.