# Maintenance and Cleaning

- Before carrying out any work on the power tool (e.g. maintenance, tool change etc.), remove the battery from the power tool. There is risk of injury from unintentionally pressing the on/off switch.

- To ensure safe and efficient operation, always keep the power tool and the ventilation slots clean.

If the power tool has been stored for 2 years or longer without use, maintenance at an authorised after-sales service centre for Bosch power tools is recommended.

## Rectifying Errors

Problem | Cause | Corrective measure
--- | --- | ---
The power tool does not react. | No battery or empty battery inserted | Insert a charged battery.
Battery and/or power tool outside the operating temperature | Allow the battery and power tool to reach the correct operating temperature.
Power tool not switched on | Switch on the power tool using the on/off button (1) on the user interface.
No discharging procedure triggered | ≤ 2 nails in the magazine (12) | Fill up the magazine (12).
Trigger (6) locked | Press the unlocking switch (5) to the left to unlock the trigger (6).
Work sequence incorrectly performed | Observe the correct work sequence: Lift the contact element (17) from the substrate. Release the trigger (6). Press the contact element at a perpendicular angle on the substrate. Press the trigger within 2 seconds after pressing on the contact element.
Nail is not sitting deep enough. | Power tool too cold | Allow the power tool to reach the correct operating temperature.
Depth stop incorrectly set | Press the depth stop switch (20) to the left.
Nail too long | Use shorter nails. Observe the suitable effective embedment length hef for your application.
Substrate too hard | Use alternative fastening methods, e.g. dowels.
Nail is sitting too deep. | Depth stop incorrectly set | Press the depth stop switch (20) to the right.
Nail too short | Use longer nails. Observe the suitable effective embedment length hef for your application.
Substrate too soft | Use alternative fastening methods, e.g. dowels.
Nail is bent or breaks. | Power tool positioned at a slant on the substrate | Position the power tool perpendicular to the substrate. For an even substrate, use the supporting foot (13) to align it.
Nail too long | Use shorter nails. Observe the suitable effective embedment length hef for your application.
Substrate too hard | For concrete with hard inclusions, try fastening at a different point. Otherwise, use alternative fastening methods, e.g. dowels.
Nail does not grip in steel. | Steel substrate too thin | Use alternative fastening methods, e.g. screwdriving.
Nail does not come out of contact element or contact element remains in pressed-in position. | Jamming in the contact element (e.g. due to foreign objects or dirt) | Clear the jam see Clearing Jams/Resetting.
Error rate too high | Substrate too hard | Use alternative fastening methods, e.g. dowels.
Firing pin worn | Have power tool repaired by an authorised after-sales service centre for Bosch power tools.
Nails do not slide into the magazine. | Magazine dirty | Clean the magazine (12), e.g. with a paintbrush.