Tools / Power Tools
Bosch GSR 12V-20 Professional Cordless Screwdriver User Manual
Quick guide for the Bosch GSR 12V-20 Professional cordless screwdriver, covering safety instructions, operation, mounting, technical data, and maintenance.
Table of contents
Manual images
Jump to the sectionQuick guide from the manual
This manual provides essential safety and operating instructions for the Bosch GSR 12V-20 Professional and GSR 12V-20 HX Professional cordless screwdrivers. Always ensure the tool is switched off before inserting or removing the battery or changing accessories.
Device Description
The device is a cordless screwdriver/drill intended for driving and loosening screws, as well as drilling in wood, metal, ceramics, and plastic. It features an integrated light for illuminating the immediate work area.
Operation
The tool features a gear selector for mechanical speed selection and a torque adjustment ring. The battery charge level is indicated by three green LEDs when the on/off switch is pressed.
- Battery Removal/Insertion: Use steps 1 and 2.
- Mounting Tools: Use step 3.
- Direction of Rotation: Use step 4.
- Torque/Drilling Selection: Use steps 5 and 6.
- Gear Selection: Use step 7.
- Switching On/Off: Use step 12.
Safety Warnings
Always wear ear protection. Keep the tool and ventilation slots clean for safe operation. Be aware of high reaction torques if the tool jams. Do not open the battery, and protect it from heat, fire, and moisture.
Maintenance
Clean the tool, tool holder, and ventilation slots after every use. For repairs, contact authorized Bosch service centers and use only original spare parts.
Technical Data
Refer to the table on page 153 for detailed technical specifications, including rated voltage, no-load speeds, and maximum torque.
Manufacturer information
Bosch
Practical help
Common problems
Tool does not start
Check battery charge level or ensure the battery is properly inserted.
Gear switch cannot be pushed to the stop
Turn the drill chuck slightly to align the gears.
Tool jams during operation
Switch off the tool immediately to prevent kickback; check for overload or workpiece jamming.
Before use
- Ensure the battery is fully charged.
- Check that the tool is switched off before inserting the battery.
- Select the correct gear for the task.
- Ensure the correct bit or drill is securely mounted.
- Wear appropriate personal protective equipment (e.g., safety glasses, ear protection).
Images and diagrams
- Page 154: Battery removal and insertion.
- Page 155: Mounting application tools.
- Page 156: Torque and drilling mode selection.
- Page 157: Mounting belt hook and bit holder.
- Page 158: Checking battery charge level.
Model compatibility
- Compatible with Bosch 12V and 10.8V battery packs.
- Use only recommended Bosch chargers.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.