IKEA HATTEFJÄLL 004.945.15 Chair instructions manual

The IKEA HATTEFJÄLL 004.945.15 is an ergonomic office chair with adjustable seat height, seat depth, lumbar support, tilt tension, and armrests. It features a swivel base with casters, a breathable mesh backrest, and is designed for prolonged sitting comfort. Below are key sections for safety, assembly, adjustment, care, and troubleshooting.

1. Features at a Glance 2. Assembly Instructions 3. Adjustment Guide 4. Specifications 5. Parts List 6. Safety Information 7. Care & Maintenance 8. Warranty Information 9. Troubleshooting

Features at a Glance

Key components: Mesh backrest, adjustable seat, tilt mechanism, armrests, 5-star base with casters.

Feature	Description
Seat height adjustment	Gas lift mechanism for easy height adjustment
Seat depth adjustment	Slide seat forward/backward for optimal leg support
Lumbar support	Adjustable lower back support for ergonomic posture
Tilt tension control	Adjust resistance when leaning back
Armrests	Height-adjustable armrests for comfort
Swivel base	360-degree rotation on smooth-rolling casters
Breathable mesh	Backrest material for air circulation
Weight capacity	Supports up to 110 kg (242 lbs)
Lockable tilt	Option to lock chair in upright position
Assembly tools	Includes Allen key and instructions

Assembly Instructions

Unpack all parts and check against parts list. Assemble on a clean, flat surface.

Attach casters: Insert five casters into the star base until they click into place.
Install gas lift: Insert gas lift cylinder into center hole of star base.
Attach seat mechanism: Place seat on gas lift and secure with provided screws.
Install backrest: Align backrest with seat mechanism and secure with screws.
Attach armrests: Screw armrests into designated holes on seat sides.
Final check: Ensure all screws are tight and mechanisms move smoothly.

WARNING! Chair is heavy; lift with care to avoid injury. Ensure all connections are secure before use.

Adjustment Guide

After assembly, adjust chair to fit your body for optimal comfort.

Seat height: Use lever under seat to raise or lower chair.
Seat depth: Pull lever under seat front to slide seat forward/backward.
Lumbar support: Turn knob on backrest to adjust support height and depth.
Tilt tension: Rotate knob under seat to increase/decrease leaning resistance.
Armrest height: Press button on armrest to adjust height up or down.
Tilt lock: Pull lever under seat to lock chair in upright position.

CAUTION! Do not exceed maximum weight capacity. Adjust while seated for proper fit.

Specifications

Model: HATTEFJÄLL 004.945.15
Color: Various options (check packaging)
Dimensions (assembled): Height: 115-130 cm, Width: 68 cm, Depth: 68 cm
Seat height range: 46-56 cm from floor
Seat depth range: 38-48 cm
Materials: Polyester mesh, steel frame, polypropylene plastic
Weight capacity: 110 kg (242 lbs)
Warranty: 10-year limited warranty
Recommended use: Office and home office environments

Parts List

Check that all parts are included before assembly.

Part	Quantity	Description
Star base	1	5-leg aluminum base
Casters	5	60mm smooth-rolling wheels
Gas lift cylinder	1	Class 4 gas lift
Seat with mechanism	1	Includes adjustment levers
Backrest	1	Mesh back with lumbar support
Armrests	2	Height-adjustable
Screws and bolts	Set	Various sizes for assembly
Allen key	1	Included tool for assembly
Instruction manual	1	This document

Safety Information

Important safety instructions for proper use and maintenance.

Always assemble on a flat, stable surface.
Check all screws and connections regularly for tightness.
Do not stand on the chair or use as a step ladder.
Keep chair away from heat sources and direct sunlight.
Use only on smooth, indoor surfaces suitable for casters.
Ensure casters are clean and free of debris for smooth movement.
Children should not play with adjustment mechanisms.

WARNING! Failure to follow safety instructions may result in injury or damage.

Care & Maintenance

Proper care will extend the life of your chair.

Mesh backrest: Vacuum gently or wipe with damp cloth. Do not use harsh chemicals.
Plastic parts: Wipe with mild soap solution and soft cloth.
Metal parts: Dust regularly; use metal cleaner if needed.
Casters: Remove hair and debris regularly for smooth rolling.
Mechanisms: Do not lubricate; contact service if mechanisms become stiff.

CAUTION! Do not use abrasive cleaners or solvents that may damage materials.

Warranty Information

IKEA HATTEFJÄLL comes with a 10-year limited warranty. This warranty covers defects in materials and workmanship under normal household use. Proof of purchase required. Warranty does not cover damage from improper assembly, accidents, modification, or commercial use. For warranty claims, contact IKEA customer service with your receipt and product information.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Chair wobbles	Loose screws	Tighten all screws, especially at base and seat connection.
Height adjustment not working	Gas lift issue	Ensure lever is properly connected; contact service if persistent.
Armrests loose	Loose screws	Tighten screws connecting armrests to seat.
Casters not rolling smoothly	Debris in wheels	Clean casters; remove hair and dust from wheel mechanism.
Backrest support not adjusting	Knob obstruction	Check for obstruction; ensure knob turns freely.
Squeaking noises	Metal friction	Check for loose parts; ensure all connections are tight.

Service: For additional help, contact IKEA customer service at 1-800-434-4532 or visit www.ikea.com.