Kensaker Tall Drafting Chair K255-S Instruction Manual

1. Introduction

This manual provides instructions for the assembly, operation, and maintenance of your Kensaker Tall Drafting Chair, model K255-S. Please read this manual thoroughly before assembly and use to ensure proper function and safety.

2. Safety Information

• Maximum Weight Capacity: The chair is designed to support a maximum weight of 120 kg (approximately 265 lbs). Exceeding this limit may cause damage to the chair or personal injury.
• Adult Use Only: This chair is intended for adult use.
• Assembly: Always follow the assembly instructions carefully. Ensure all screws and bolts are securely tightened before use.
• Stability: Avoid standing on the chair or using it as a step stool. Do not lean excessively to one side or the back to prevent tipping.
• Moving the Chair: When moving the chair, lift it rather than dragging it to prevent damage to the casters or floor.
• Maintenance: Regularly inspect the chair for loose parts or damage. Do not use the chair if any components are damaged or missing.

3. Package Contents

Before beginning assembly, verify that all components are present and undamaged. If any parts are missing or damaged, contact customer support.

• Backrest (1)
• Seat Cushion (1)
• Armrests (2)
• Mechanism Plate (1)
• Gas Lift Cylinder (1)
• Gas Lift Cover (1)
• Chair Base (1)
• Casters (5)
• Footrest Ring (1)
• Hardware Pack (Screws, Allen Wrench)

Figure 1: Overview of all chair components included in the package.

4. Assembly Instructions

Assembly typically takes 15-20 minutes. Follow these steps carefully:

1. Attach Casters to Base: Insert the five casters into the holes at the end of each leg of the chair base. Push firmly until they click into place.
2. Install Gas Lift: Place the gas lift cylinder into the center hole of the chair base. Cover it with the gas lift cover.
3. Assemble Footrest Ring: Slide the footrest ring over the gas lift cylinder. Secure it at your desired height using the adjustment knob or lever on the ring.
4. Attach Mechanism Plate to Seat: Align the mechanism plate with the screw holes on the underside of the seat cushion. Ensure the front of the mechanism faces the front of the seat. Secure with screws using the provided Allen wrench.
5. Attach Armrests to Seat: Attach the armrests to the sides of the seat cushion using the designated screws. Do not overtighten initially.
6. Attach Backrest to Seat: Connect the backrest to the seat cushion assembly. Secure with screws. Once all parts are aligned, tighten all armrest and backrest screws.
7. Connect Seat Assembly to Gas Lift: Carefully place the assembled seat onto the gas lift cylinder, ensuring the center hole of the mechanism plate aligns with the top of the gas lift. Press down firmly to secure.

Figure 2: Assembling the chair base with casters and gas lift.

Figure 3: Attaching the backrest and armrests to the seat.

Figure 4: Connecting the assembled seat to the gas lift.

5. Operating Instructions

Your Kensaker drafting chair offers several adjustable features for personalized comfort:

• Seat Height Adjustment: To raise the seat, lift the lever located under the right side of the seat while taking your weight off the chair. To lower the seat, lift the lever while seated. The chair offers a 7.9-inch height adjustment range.

Figure 5: Seat height adjustment mechanism.
• Footrest Ring Height Adjustment: Loosen the knob on the footrest ring, slide the ring up or down to your desired height, and then tighten the knob securely. The footrest ring has a 9.45-inch height adjustment.


Figure 6: Footrest ring height adjustment.

• Flip-Up Armrests: The armrests can be flipped up 90 degrees to allow the chair to be pushed closer to a desk or for easier entry/exit. Simply lift the armrests upwards until they lock into the vertical position.


Figure 7: Flip-up armrest feature.

• Lumbar Support: The chair features a lumbar support panel with a 2-inch vertical adjustment range to accommodate different user heights and provide targeted back support.
• Tilt Function: The chair includes a tilt lock function. Pull the lever (usually the same as the height adjustment lever, or a separate one) outwards to enable tilt, and push it inwards to lock the chair in an upright position.
• 360° Rotation: The chair seat can rotate 360 degrees for ease of movement and access.

6. Maintenance

• Cleaning: Wipe clean with a damp cloth. Avoid harsh chemicals or abrasive cleaners that may damage the finish or fabric.
• Inspection: Periodically check all screws and bolts to ensure they remain tight. Retighten if necessary.
• Casters: Keep casters free of hair and debris to ensure smooth movement.

7. Troubleshooting

• Chair Sinks or Does Not Hold Height:

  This usually indicates an issue with the gas lift cylinder. Ensure the height adjustment lever is fully engaged. If the problem persists, the gas lift may need replacement. Contact customer support.

• Chair Wobbles:

  Check that all assembly screws, especially those connecting the mechanism plate to the seat and the backrest to the seat, are securely tightened. Also, ensure the gas lift is properly seated in the base.
• Footrest Ring Slides Down:

  Ensure the adjustment knob or lever on the footrest ring is tightened firmly after setting the desired height. If it continues to slide, inspect the clamping mechanism for wear or damage.

• Casters Not Rolling Smoothly:

  Remove any hair, dust, or debris that may be caught in the caster wheels. If they are still stiff, they may need lubrication or replacement.

8. Specifications

Figure 8: Kensaker Tall Drafting Chair K255-S.

9. Warranty and Support

Kensaker is committed to customer satisfaction. While specific warranty details are not provided in this manual, we encourage you to contact our service team for any questions regarding product quality, assembly, or after-sales support.

For assistance, please refer to the contact information provided with your purchase or visit the official Kensaker website.