Dowinx SF20250909B0F4MTCYNQ
Dowinx Ergonomic Racing Style Gaming Chair Instruction Manual
Model: SF20250909B0F4MTCYNQ
Introduction
This manual provides comprehensive instructions for the assembly, operation, maintenance, and troubleshooting of your Dowinx Ergonomic Racing Style Gaming Chair. Please read this manual thoroughly before assembly and use to ensure proper function and safety.
Important Safety Information
For your safety, keep all small parts out of reach of young children. Always inspect the chair upon delivery and follow the assembly instructions carefully. Do not exceed the maximum weight recommendation of 350 pounds. Contact our 24/7 customer service if any parts are damaged during shipping or if you have any safety concerns.
Package Contents
Verify that all components are present before beginning assembly. Refer to the included detailed instruction manual for a complete list of parts.
- Chair Backrest
- Seat Base with Mechanism
- Armrests (2)
- Star Base
- Caster Wheels (5)
- Gas Lift Cylinder
- Gas Lift Cover
- Head Pillow
- Lumbar Support Pillow (with massage function)
- Footrest Assembly
- Hardware Kit (screws, Allen wrench)
- Instruction Manual
Setup and Assembly
Detailed assembly instructions are provided in the included manual. The following is a general overview of the assembly process:
- Attach Casters to Base: Insert the five caster wheels into the holes on the star base.
- Install Gas Lift: Place the gas lift cylinder into the center hole of the star base, then cover it with the gas lift cover.
- Attach Mechanism to Seat: Secure the seat mechanism to the underside of the seat base using the provided screws. Ensure the front of the mechanism aligns with the front of the seat.
- Connect Seat to Gas Lift: Carefully place the assembled seat onto the gas lift cylinder.
- Attach Armrests: Secure the armrests to the sides of the seat base using the provided screws.
- Attach Backrest: Align the backrest with the seat and secure it using the appropriate screws.
- Install Pillows: Attach the head pillow and lumbar support pillow using their integrated straps. The lumbar support pillow includes a USB cable for its massage function.
- Assemble Footrest: Attach the footrest frame to the designated points under the seat, then secure the footrest pad.

Image Description: A line drawing of the Dowinx Gaming Chair with various dimensions labeled in inches, including backrest height, seat width, seat depth, and adjustable seat height range.
Operating Instructions
Your Dowinx Gaming Chair is designed with multiple adjustable features for personalized comfort.
1. Seat Height Adjustment
To adjust the seat height, locate the lever on the right side beneath the seat. Pull the lever upwards while applying or releasing weight from the seat to move it up or down. Release the lever to lock the height in place.
2. Backrest Recline
To recline the backrest, locate the lever on the left side beneath the seat. Pull the lever upwards and lean back to your desired angle (90° to 180°). Release the lever to lock the backrest position. The chair is designed to lay almost flat for resting.

Image Description: A diagram showing the chair reclining from an upright working position to a fully flat resting position, illustrating the 165° recline capability.
3. Retractable Footrest
To use the footrest, pull the footrest assembly outwards from beneath the seat. The footrest pad can be flipped for different support. Push it back under the seat when not in use.

Image Description: A pink and white gaming chair with its footrest fully extended, ready for use.
4. Armrest Adjustment
The linkage armrests are designed to move with the recline of the backrest, providing continuous support. They feature exclusive patented bearings to prevent wobbling.

Image Description: A close-up diagram of the chair's linkage armrest, showing its pivot points and highlighting the patented bearing structure designed to prevent wobbling.
5. Massage Lumbar Support
The lumbar support pillow includes a massage function. Connect the integrated USB cable to any standard USB power source (e.g., power bank, computer USB port) to activate the massage feature. The pillow is adjustable in height to suit individual preferences.

Image Description: A close-up of the chair's lumbar support pillow, indicating its massage function and adjustability.
6. Swivel and Mobility
The chair features 360° swivel capability and smooth-rolling caster wheels for easy mobility across various floor surfaces.
Maintenance
To ensure the longevity and appearance of your chair, follow these maintenance guidelines:
- Cleaning: The manufacturer recommends dry cleaning for the chair's material. Avoid harsh chemicals or abrasive cleaners.
- Regular Inspection: Periodically check all screws and bolts to ensure they are tight. Tighten if necessary.
- Caster Care: Keep caster wheels free of debris (hair, dust) to maintain smooth movement.
Troubleshooting
If you encounter any issues with your chair, refer to the following common solutions:
- Squeaking Noises: If the chair develops squeaking noises, check and tighten all assembly bolts. Applying a small amount of silicone lubricant to moving metal parts may also help.
- Armrest Wobble: The linkage armrests are designed with patented bearings to minimize wobble. If excessive wobble occurs, ensure all armrest attachment screws are securely tightened.
- Lumbar Support Comfort: The lumbar support pillow is adjustable. Experiment with different heights to find the most comfortable position for your back.
- Footrest Operation: Ensure the footrest mechanism is clear of obstructions when extending or retracting.
For issues not covered here, please contact customer service.
Specifications
| Feature | Detail |
|---|---|
| Brand | Dowinx |
| Model Number | SF20250909B0F4MTCYNQ |
| Color | Pink |
| Product Dimensions | 33.07"D x 22.44"W x 10.24"H |
| Size | 20" x 23" x 55-58.5" |
| Back Style | Solid Back |
| Special Features | Adjustable Backrest, Adjustable Height, Arm Rest, Ergonomic, Foot Rest, Massage Lumbar Support |
| Product Care Instructions | Dry Clean |
| Recommended Uses | Gaming, Office, Reading, Relaxing, Video Game |
| Style | Classic |
| Material | Metal frame, PU Leather, Foam fill |
| Weight Capacity | 350 lbs |
| Reclining Position Count | 2 (90°-180°) |
| Furniture Base Movement | Swivel |
Warranty and Customer Support
Dowinx offers a one-month replacement service and a one-year repair service for this product. Our 24/7 customer service team is available to assist you with any questions or concerns. Please refer to your purchase documentation for contact details.
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