Operating Instructions for Hilti SFE 2-A12 Multi-Head Drill Driver

Quick guide from the manual

The Hilti SFE 2-A12 is a professional cordless drill/driver designed for driving screws and drilling in metal, wood, and plastic. Before using the tool, ensure the battery is fully charged and the correct adapter is fitted. Always remove the battery before performing maintenance or changing accessories to prevent accidental starting.

Product overview

• 1/4" hex socket
• Torque and drilling mode selector ring
• Gear speed selection switch
• Forward/reverse selector switch with safety lock
• Grip
• Fitting slot for accessories (e.g., belt hook)
• Lamp
• Charge status display
• Battery release button
• Control switch (with electronic speed control)
• Adapter

Preparation and battery

Use only Hilti B 12 series Li-ion batteries. To insert the battery, push it into the tool until it engages with an audible click. To remove, press the battery release buttons. The charge state can be checked by pressing the release buttons lightly; 4 LEDs indicate 75-100% charge, while 1 blinking LED indicates less than 10%.

Using adapters

The SFE 2-A12 features an interchangeable chuck system. Available adapters include:

• Hex bit holder: For bits with mechanical clamping.
• Keyless chuck: For drill bits (1.5 mm to 13 mm).
• Right-angle adapter: For cramped conditions; includes magnetic hex bit holder.
• Eccentric adapter: For working close to walls; includes magnetic hex bit holder.

To fit an adapter, insert it into the chuck until it snaps into place. To remove, pull the locking sleeve and hold it while removing the adapter.

Operation

• Selecting the gear: Use the gear selector switch to choose between 1st gear (400/min) or 2nd gear (1600/min).
• Setting the torque: Turn the adjusting ring to the desired setting. Torque is only limited in screwdriving mode.
• Rotation direction: Use the forward/reverse switch. The switch is locked in the middle position (switch-on interlock).
• Switching on/off: Press the control switch to start. Speed is controlled steplessly by how far the switch is pressed.

Care and maintenance

Always remove the battery before cleaning. Clean air vents with a dry, soft brush. Use a slightly damp cloth for the housing; do not use silicone-based cleaning agents. Keep battery contacts clean and free of oil or grease. If the tool or battery becomes damaged, contact Hilti Service.

Troubleshooting

If the tool does not work, ensure the battery is fully inserted. If the control switch is stuck, check that the forward/reverse switch is not in the middle position. If the tool or battery becomes very warm, stop use, remove the battery, and allow it to cool down.