Yonglong Office Chair Adjustment

Although the specific adjustment methods for Yonglong office chairs are not explicitly mentioned, the following are common adjustment methods for office chairs:

Height Adjustment

• Method 1: Leave the chair or lift your body so that your weight is not pressing on the chair. Pull the lever under the seat, and the chair will rise. When sitting on the chair, pull the lever, and the chair will descend due to your body weight. Release the lever when it reaches the appropriate position.
• Method 2: Look for the hand control device. Some models have a lever to pull, while others have a knob to turn. For pneumatic models, pump the lever (repeatedly push it up and down to raise or lower the seat). Adjust the seat height until you feel comfortable. Move only a few inches (or centimeters) at a time, and return the lever to its original position when finished. For some models, you may need to pull the lever up to raise the seat and press it down to lower the seat. If you cannot adjust it properly, try adjusting from a standing position. Adjust the seat height of the chair until the front of the chair is just below your knees.

Backrest Adjustment

• Backrest Angle Adjustment: Find the angle adjustment knob or lever under the armrests or on the side of the chair (some are push-button types), usually marked with a curved arrow or angle symbol. When adjusting, sit up straight. After rotating the knob or pulling the lever, lean back gently to a comfortable angle (usually the adjustment range is 100° - 135°). Release the knob or lever after adjustment, and the backrest will automatically lock at the current angle. Some high-end chairs can adjust the recline force. Adjust the spring tension by rotating the knob to suit different body weights.
• Backrest Height Adjustment: Check if there is a vertical adjustment lever under the backrest (some chairs share the lever with the seat height adjustment). When pulling the lever, lift your body slightly (or use the gravity-sensing design to directly adjust the center of gravity of your sitting posture). The backrest will move up and down synchronously with the seat. Adjust it until the lumbar pillow aligns with your waist (about 40 - 50 cm from the ground, adjust according to your height). Release the lever, and the backrest height will be fixed. Some ergonomic chairs can adjust the backrest depth. Slide the backrest forward or backward using the side buttons to fit different torso lengths.
• Locking and Resetting: If you want to fix the backrest angle (for example, keep it at 90° while working), find the locking button (usually red or with a conspicuous mark) and press it so that the backrest cannot recline. To reset, press the locking button again or rotate the angle knob in the opposite direction to return the backrest to its original upright position.

Other Adjustments

• If the chair has armrests, you can adjust their height. If you do not need arm support, you can remove the armrests or lower them to avoid obstruction. If the armrests prevent you from comfortably sliding your knees under the desk, lower or remove them.
• Change your sitting posture every 15 - 30 minutes. Even if you do not need to adjust the chair height for work, you can still try to change your position, such as briefly leaning forward and then returning to a fully upright sitting position. You can also slightly shift the weight of the chair from one side to the other.
• If the chair is too high, prepare a footrest. Slide the office footrest under the desk and place your feet on it.