1. Important Safety Information
Always wear eye protection and gloves when using the string trimmer. Be aware of flying debris and keep children and pets away from the operating area. For the sweeper, keep hard surfaces clear of debris before use to prevent injury from flying objects.
- Read all instructions carefully before operating the tools.
- Ensure the battery is fully charged before use.
- Do not operate tools in wet conditions.
- Keep hands and feet away from cutting line and blower nozzle.
- Store tools and batteries in a dry, secure location, out of reach of children.
2. Product Overview
The BLACK+DECKER LCC340C combo kit includes a 40V MAX Lithium String Trimmer/Edger (LST140) and a 40V MAX Sweeper (LSW40). This cordless system provides efficient solutions for yard maintenance.

Image 2.1: The BLACK+DECKER LCC340C Combo Kit, including the string trimmer, sweeper, battery, charger, and extra spool.

Image 2.2: Diagram highlighting key features such as 40V Lithium Ion battery, lightweight design, quiet operation, 130 mph air speed, trimmer to edger conversion, adjustable height, and Automatic Feed Spool (AFS).
Components Included:
- LST140 40V MAX String Trimmer/Edger
- LSW40 40V MAX Sweeper
- 40V MAX Lithium Ion Battery
- Battery Charger
- Extra Trimmer Line Spool
3. Setup and Assembly
3.1 Battery Charging
- Insert the 40V MAX Lithium Ion battery into the charger.
- Plug the charger into a standard electrical outlet.
- Allow the battery to charge until the indicator light on the charger shows a full charge. Refer to the charger's specific instructions for light patterns.
- A fully discharged battery may take several hours to charge.
3.2 String Trimmer Assembly (LST140)
- Attach the Guard: Align the guard with the trimmer head and secure it using the provided screw and a Philips screwdriver. Ensure it is firmly attached for safety.
- Attach the Auxiliary Handle: Slide the auxiliary handle onto the trimmer shaft. Adjust its position for comfortable operation and tighten the locking mechanism.
- Adjust Shaft Length: Extend or retract the telescopic shaft to your desired operating height. Secure the adjustment collar.
3.3 Sweeper Assembly (LSW40)
The LSW40 Sweeper typically requires minimal assembly. Ensure the blower tube is securely attached to the motor housing. Refer to the specific diagrams in the included manual for detailed instructions if needed.
4. Operating Instructions
4.1 General Operation
- Insert a fully charged battery into the tool until it clicks into place.
- To start the tool, press and hold the safety switch, then squeeze the trigger.
- To stop the tool, release the trigger.
- Monitor the 'state of charge' indicator on the battery to track remaining power.
4.2 String Trimmer (LST140)
The LST140 features a POWER DRIVE high-torque transmission for efficient cutting and an AUTOMATIC FEED SPOOL (AFS) system.

Image 4.1: The Automatic Feed Spool (AFS) system effortlessly feeds trimmer line as needed, eliminating the need for manual bumping.
- Trimming: Hold the trimmer with both hands, keeping the cutting head parallel to the ground. Move the trimmer slowly and steadily across the area to be trimmed.
- Automatic Feed Spool (AFS): The AFS system automatically extends the trimmer line when needed, ensuring continuous cutting without interruption.
- Converting to Edger: The trimmer easily converts to an edger in seconds. Rotate the trimmer head 180 degrees and lock it into the edging position. Use the wheel on the guard to guide the trimmer along edges for clean lines.

Image 4.2: The 2-in-1 design allows for easy conversion from a string trimmer to an edger.
4.3 Sweeper (LSW40)
The LSW40 Sweeper provides a wind speed of up to 130 MPH for clearing debris from hard surfaces with a low noise design.

Image 4.3: The high-performance, low-noise sweeper effectively clears debris from hard surfaces.
- Hold the sweeper firmly with one hand.
- Direct the nozzle towards the debris you wish to clear.
- Sweep in a side-to-side motion to gather debris into piles for easier collection.
- Avoid directing the air stream towards people or animals.

Image 4.4: Both tools in operation, demonstrating their use for comprehensive yard maintenance.
5. Maintenance
5.1 Cleaning
- Always remove the battery before cleaning.
- Wipe down the exterior of both tools with a damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Clear any grass clippings or debris from the trimmer head, guard, and blower nozzle.
5.2 Trimmer Line Replacement
- Remove the battery from the trimmer.
- Press the tabs on the spool cap and remove it.
- Remove the empty spool.
- Insert a new BLACK+DECKER replacement spool, ensuring the line is threaded through the eyelet.
- Replace the spool cap, ensuring it clicks into place.
5.3 Battery Care
- Store batteries in a cool, dry place away from direct sunlight and extreme temperatures.
- Do not store batteries in a discharged state for extended periods. Charge them periodically if not in use.
- Only use BLACK+DECKER approved chargers and batteries.
6. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Tool does not start | Battery not charged or improperly inserted; Safety switch not engaged. | Charge battery fully and reinsert; Ensure safety switch is pressed before trigger. |
| Trimmer line not feeding | Spool empty or line tangled; Debris in feed mechanism. | Replace spool or untangle line; Clean trimmer head. |
| Reduced power/run time | Battery low on charge or nearing end of life. | Recharge battery; Consider replacing battery if performance does not improve after charging. |
| Sweeper has low air output | Nozzle obstructed; Battery low. | Clear any obstructions from the nozzle; Recharge battery. |
7. Specifications
| Feature | Specification |
|---|---|
| Brand | BLACK+DECKER |
| Model Number | LCC340C |
| Power Source | Battery Powered (40V Max Lithium Ion) |
| Item Weight | 11 Pounds (combined) |
| Trimmer Cutting Width | 13 Inches |
| Sweeper Air Speed | Up to 130 Miles per Hour |
| Assembly Required | No (minimal assembly for guard/handle) |
| UPC | 885911503037 |
8. Warranty and Support
8.1 Warranty Information
The BLACK+DECKER LCC340C Combo Kit is backed by BLACK+DECKER's 2-year limited warranty. This warranty covers defects in material or workmanship. Please retain your proof of purchase for warranty claims.
8.2 Customer Support
For technical assistance, replacement parts, or warranty service, please contact BLACK+DECKER customer support. Refer to the official BLACK+DECKER website or product packaging for current contact information.