1. Introdución
This manual provides essential information for the safe and effective operation, maintenance, and troubleshooting of your FLEX 24V 1/4-inch Quick Eject Hex Impact Driver. This tool is designed to deliver powerful performance for various fastening applications, featuring multiple speed modes, self-tapping screw modes, and a quick eject collet for efficient bit changes. Please read this manual thoroughly before using the tool to ensure proper handling and to maximize its lifespan.

Figure 1: FLEX 24V Brushless Cordless 1/4-Inch Hex Impact Driver (Tool Only)
This image shows the FLEX 24V Brushless Cordless 1/4-Inch Hex Impact Driver, highlighting its ergonomic design and compact form factor. The tool is depicted without a battery, as it is sold as a tool-only unit.
2. Información de seguridade
Observe sempre as precaucións básicas de seguridade ao usar ferramentas eléctricas para reducir o risco de incendio, descarga eléctrica e lesións persoais. Garde este manual para futuras consultas.
Avisos xerais de seguridade das ferramentas eléctricas:
- Seguridade na zona de traballo: Manteña a súa área de traballo limpa e ben iluminada. As zonas desordenadas ou escuras invitan aos accidentes. Non manexe ferramentas eléctricas en atmosferas explosivas, como en presenza de líquidos, gases ou po inflamables.
- Seguridade eléctrica: Os enchufes das ferramentas eléctricas deben coincidir coa toma de corrente. Nunca modifique o enchufe de ningún xeito. Non use ningún adaptador de enchufe con ferramentas eléctricas conectadas a terra. Evite o contacto corporal con superficies conectadas a terra, como tubaxes, radiadores, fogóns e frigoríficos.
- Seguridade persoal: Usa sempre protección ocular. Usa o equipo de seguridade axeitado, como máscaras antipo, calzado de seguridade antideslizante, cascos ou protección auditiva cando sexa necesario. Vístete axeitadamente; evita roupa folgada ou xoias.
- Uso e coidado da ferramenta: Non force a ferramenta eléctrica. Empregue a ferramenta eléctrica axeitada para a súa aplicación. Desconecte o enchufe da fonte de alimentación e/ou a batería da ferramenta eléctrica antes de facer axustes, cambiar accesorios ou gardar ferramentas eléctricas.
- Uso e coidado da ferramenta da batería: Recargue só co cargador especificado polo fabricante. Use ferramentas eléctricas só con baterías designadas especificamente.
3. Compoñentes e características
The FLEX 24V Impact Driver is engineered with advanced features for optimal performance and user control.
- Sensor-Free Brushless Motor: Designed for higher efficiency and power, eliminating friction.
- Unrivaled Power: Delivers up to 2,500 in-lbs of torque for demanding fastening tasks.
- 3 modos de velocidade: Provides enhanced control, allowing adaptation to various applications.
- Quick Eject Collet: Enables fast, one-handed bit changes for increased efficiency.
- Self-Tapping Screw Modes: Optimized to prevent over-tightening, breaking, or stripping of screws.
- Iluminación LED incorporada: Ilumina a área de traballo para unha mellor visibilidade.
- FLEX 24V Cross-Compatibility: Fully compatible with all FLEX 24V batteries, chargers, and tools.

Figure 2: Demonstrating Unrivaled Power
This image illustrates the FLEX Impact Driver in use, emphasizing its capability to deliver 2,500 in-lbs of torque. A user is shown holding the tool with a battery attached, driving a fastener.
4. Configuración
4.1 Instalación da batería (a batería e o cargador véndense por separado)
- Asegúrese de que a ferramenta estea apagada e que o gatillo estea bloqueado.
- Aliñe a batería co porto da batería na base da ferramenta.
- Deslice a batería no porto ata que encaixe firmemente no seu lugar.
- To remove, press the battery release button(s) and slide the battery pack out.
4.2 Bit Insertion and Removal
The Quick Eject Collet allows for rapid bit changes.
- Inserción: Pull the quick eject collet forward. Insert the 1/4-inch hex shank bit fully into the chuck. Release the collet to lock the bit in place. Tug on the bit to ensure it is securely seated.
- Eliminación: Pull the quick eject collet forward. The bit will spring out for easy removal.

Figure 3: Quick Eject Collet in Action
This image demonstrates the quick eject collet feature of the FLEX Impact Driver, showing a hand operating the collet for rapid bit insertion or removal.
5. Instrucións de funcionamento
5.1 Acendido/Apagado
- Para acender, prema o interruptor do gatillo. A velocidade da ferramenta é variable en función da presión do gatillo.
- Para apagar, solte o interruptor de disparo.
5.2 Selecting Speed Modes
The tool features three speed modes for versatile application control.

Figure 4: 3 Speed Modes Control
This image highlights the control panel on the FLEX Impact Driver, showing the selector for its three distinct speed modes, allowing users to adjust power output for different tasks.
- Use the mode selection button (typically located near the base of the handle) to cycle through the available speed settings (1, 2, 3).
- Select a lower speed for delicate tasks or when starting a fastener, and higher speeds for rapid driving in appropriate materials.
5.3 Using Self-Tapping Screw Modes
These specialized modes prevent over-tightening and stripping of self-tapping screws.

Figure 5: Self-Tapping Screw Modes
This image focuses on the control interface of the FLEX Impact Driver, specifically showing the button or switch used to activate the self-tapping screw modes, designed for precise fastening.
- Activate the self-tapping screw mode via the dedicated button.
- The tool will automatically adjust its torque and speed to prevent damage to the fastener or workpiece once the screw is seated.
5.4 Funcionamento cara adiante/atrás
- O interruptor selector de avance/retroceso está situado enriba do gatillo.
- Push the switch to the left for forward rotation (driving screws).
- Push the switch to the right for reverse rotation (removing screws).
- Centre o interruptor para bloquear o gatillo e evitar o arranque accidental.
5.5 Luz LED integrada
The built-in LED light activates when the trigger is pressed, illuminating the work surface.
6. Mantemento
Regular maintenance ensures the longevity and optimal performance of your FLEX Impact Driver.
- Limpeza: Manteña as aberturas de ventilación da ferramenta limpas e libres de residuos. Use un pano suave eamp pano para limpar o exterior. Non empregue produtos químicos agresivos nin produtos de limpeza abrasivos.
- Almacenamento: Store the tool in a dry, secure location, out of reach of children. Remove the battery pack before storage.
- Inspección: Periodically inspect the tool for any signs of damage, loose screws, or worn parts. If any issues are found, contact FLEX customer support or a qualified service center.
7 Solución de problemas
This section addresses common issues you might encounter with your FLEX Impact Driver.
| Problema | Causa posible | Solución |
|---|---|---|
| A ferramenta non comeza. | Battery not inserted correctly or discharged. Trigger lock engaged. | Ensure battery is fully seated and charged. Disengage trigger lock. |
| Potencia ou velocidade reducidas. | Low battery charge. Incorrect speed mode selected. | Recharge battery. Select a higher speed mode. |
| A broca non se suxeita con seguridade. | Bit not fully inserted into collet. Collet mechanism dirty. | Ensure bit is fully inserted and collet is released to lock. Clean collet area. |
| Over-tightening or stripping screws. | Incorrect speed mode or self-tapping mode not engaged. | Select appropriate speed mode or activate self-tapping screw mode for specific applications. |
If the problem persists after attempting these solutions, contact FLEX customer support.
8. Especificacións
| Especificación | Valor |
|---|---|
| Marca | FLEX |
| Número de modelo | FX1371A-Z |
| Fonte de enerxía | Alimentado por batería |
| Voltage | 24 voltios |
| Velocidade de rotación máxima | 4000 RPM |
| Torque Máximo | 2,500 libras de polgadas |
| Número de velocidades | 3 |
| Tipo de broca | Controlador de impacto |
| Tamaño de pinza | 1/4-Inch Hex |
| Peso do elemento | 1.46 quilogramos (3.21 libras) |
| Dimensións do produto | 4.7 cm de longo x 10 cm de ancho x 4 cm de alto |
| Material | Plástico |
| Compoñentes incluídos | Bare tool (Battery and Charger Not Included) |
| UPC | 840163201001 |
9. Garantía e soporte
9.1 FLEX Limited Lifetime Warranty
Your FLEX 24V Impact Driver is protected by the FLEX Limited Lifetime Warranty when registered within 30 days of purchase at registermyFLEX.com through December 31, 2025. This warranty covers tools, batteries, and chargers.

Figure 6: FLEX Lifetime Warranty Details
This image displays information regarding the FLEX Limited Lifetime Warranty, emphasizing the registration requirement within 30 days of purchase to qualify for coverage on tools, batteries, and chargers.
9.2 Atención ao cliente
Para asistencia técnica, reclamacións de garantía ou consultas xerais, visite a páxina oficial de FLEX website or contact their customer support channels. Refer to the product packaging or the FLEX websitio para obter a información de contacto máis actualizada.
Tamén podes visitar o FLEX Store on Amazon para obter máis información sobre o produto e accesorios.





