black and decker string trimmer manual
black and decker string trimmer manual
Black & Decker String Trimmer Manual: A Comprehensive Guide
Black & Decker offers diverse string trimmer models, from cordless convenience to powerful corded options, all detailed within this manual for optimal yard maintenance.
This guide covers parts identification, assembly, operation, and troubleshooting, ensuring efficient weed control with your Black & Decker equipment.
Explore genuine OEM parts lookup using model numbers, alongside essential safety precautions and warranty information for a seamless experience.
Black & Decker string trimmers, also known as strimmers, weed whackers, or weed eaters, represent a cornerstone of efficient yard maintenance. This manual serves as a comprehensive resource for users of all experience levels, guiding you through the operation and care of your Black & Decker tool.
From lightweight cordless models offering freedom of movement to robust corded electric options delivering consistent power, Black & Decker caters to diverse landscaping needs. Understanding your specific model is crucial, and this guide will assist in identifying key components and features.
This introduction highlights the importance of safety, proper assembly, and regular maintenance to maximize the lifespan and performance of your string trimmer. Explore the world of BLACKDECKER string trimmers and achieve a beautifully maintained lawn with ease.
Understanding String Trimmer Models
Black & Decker offers a diverse range of string trimmer models, categorized primarily by power source: corded electric and cordless. Corded models provide consistent power for larger areas, while cordless, utilizing a 40V Max Lithium-Ion battery system, offer portability and convenience.
Swath sizes vary, impacting the area cleared per pass; larger swaths are ideal for extensive lawns. Features like automatic feed spools eliminate manual line feeding, enhancing user experience. Some models even incorporate wheeled designs for increased stability and reduced strain.

Identifying your specific model number – like LST136B – is vital for accessing the correct parts and detailed instructions. This manual aims to provide general guidance, but always refer to your model’s specific documentation for optimal performance.
Safety Precautions Before Use

Prioritize safety when operating your Black & Decker string trimmer. Always wear safety glasses or a face shield to protect against flying debris. Sturdy footwear and long pants are essential, minimizing injury risk from ejected materials.
Inspect the trimmer for damage before each use, ensuring all parts are securely fastened. Never operate the trimmer near children or pets. Be mindful of bystanders and maintain a safe operating distance.
Disconnect the power source (cord or battery) before making any adjustments or changing the line. Avoid using the trimmer in wet conditions. Familiarize yourself with the emergency stop procedures detailed in this manual.
Key Components and Parts Identification
Your Black & Decker string trimmer comprises several key components. The spool houses the trimmer line, while the motor provides the power. The trigger initiates operation, controlled via the ergonomic handle.
Identify the automatic feed mechanism, responsible for line advancement. Note the guard, protecting against debris. The shaft connects the motor to the cutting head. Refer to diagrams for precise part locations.
Understanding these components is crucial for assembly, maintenance, and troubleshooting. Genuine OEM parts ensure compatibility and performance. Always use the correct model number when ordering replacements.
Spool and Line Replacement
Replacing the spool and line on your Black & Decker string trimmer is straightforward. First, disconnect the power source – battery or cord. Locate the spool housing and release it according to your model’s instructions.
Remove the empty spool and clean the housing. Wind the new trimmer line onto the spool, ensuring it’s securely fastened at both ends. Reinsert the spool, aligning the line with the exit guides.
Secure the spool housing. A properly installed spool ensures automatic feed functionality. Use only recommended line diameter for optimal performance and safety. Refer to your model number for specific line specifications.
Motor and Power Source
Black & Decker string trimmers utilize either corded electric motors or cordless power from 40V Max Lithium-Ion batteries. Corded models deliver consistent power, while cordless offer portability. The motor’s performance dictates trimming efficiency.
Battery-powered trimmers require proper battery care for longevity – avoid extreme temperatures and fully charge before use. Always ensure the battery is securely locked into place. Inspect the power cord of corded models for damage before each use.
Understanding your trimmer’s power source is crucial for safe and effective operation. Refer to your model specifications for voltage and amperage details.
Trigger and Control Handle

The Black & Decker string trimmer’s trigger initiates the motor and controls cutting speed; a variable speed trigger offers enhanced control for different trimming conditions. The control handle provides a secure grip and maneuverability during operation.
Ensure a firm hold on the handle and activate the trigger only when ready to trim. Release the trigger immediately when finished to stop the line. Some models feature ergonomic designs for increased comfort during extended use.
Regularly inspect the trigger and handle for damage or wear. A properly functioning trigger is essential for safe and precise trimming.
Assembly Instructions
Black & Decker string trimmer assembly typically begins with attaching the handle to the motor housing, securing it with provided screws – ensure they are tightened firmly. Next, connect the shaft, aligning it correctly before locking it into place.
Install the guard, ensuring it’s properly positioned to deflect debris. Finally, attach the spool and line, following the diagram in your manual. For wheeled models, attach the wheels according to the instructions.
Double-check all connections before use. A correctly assembled trimmer ensures safe and efficient operation. Refer to your specific model’s diagram for detailed guidance.
Operating Instructions
Before starting your Black & Decker string trimmer, ensure the area is clear of obstructions and people. For cordless models, verify the battery is fully charged and securely inserted. To start, depress the trigger and maintain a firm grip on the control handle.
Begin trimming at a slight angle, moving in smooth, sweeping motions. Avoid forcing the line against tough weeds. Let the trimmer do the work. Regularly check the line length and replenish as needed.
Always wear safety glasses and appropriate clothing during operation. Familiarize yourself with the specific controls of your model for optimal performance.
Starting the String Trimmer
To initiate operation, ensure the Black & Decker trimmer is properly assembled and the safety lock-off is engaged. For electric models, confirm a secure power connection. For battery-powered versions, verify a fully charged and correctly installed battery.
Depress and hold the trigger while maintaining a firm grip on the handle. Some models may require a priming bulb to be pressed several times before starting. Listen for the motor to engage; release the trigger immediately if it doesn’t start.
Never start the trimmer while it’s in contact with anything. Always begin with a clear, unobstructed swing.
Trimming Techniques
Employ a sweeping motion, maintaining a slight angle with the string trimmer head for optimal cutting. Avoid forcing the line; let the trimmer do the work. For thick weeds, use a slower pace and multiple passes.
When trimming around obstacles like trees or fences, proceed cautiously to prevent damage to both the trimmer and the object. Utilize edge trimming for a clean, defined look along sidewalks and driveways.

Remember to walk, not reach, while trimming to maintain balance and control. Overlap each pass slightly to ensure complete coverage and a professional finish.
Adjusting the Cutting Height
Many Black & Decker string trimmer models offer adjustable cutting heights, often achieved through a telescoping shaft or adjustable guard. Extend or retract the shaft to comfortably reach the desired trimming level.
For models with adjustable guards, reposition the guard to control the length of the exposed trimmer line, influencing the cutting height. Regularly check and readjust as needed based on terrain and grass density.
A lower setting is ideal for tackling taller weeds, while a higher setting suits lighter trimming and maintaining a neat lawn edge. Prioritize safety during adjustments.
Maintenance and Care
Black & Decker string trimmer longevity relies on consistent maintenance. Regularly clean the trimmer housing, removing grass clippings and debris after each use to prevent motor overheating and ensure optimal performance.
Periodically inspect the trimmer line and replace it when worn or broken. For cordless models, adhere to specific battery care guidelines – store batteries in a cool, dry place and avoid overcharging.
While not always required, occasional lubrication of moving parts can enhance smooth operation. Refer to your model’s specific manual for detailed maintenance schedules and recommendations.
Cleaning the Trimmer
Cleaning your Black & Decker string trimmer after each use is crucial for maintaining performance and extending its lifespan. Always disconnect the power source – unplug corded models or remove the battery from cordless versions – before cleaning.
Use a soft brush or cloth to remove grass clippings, dirt, and debris from the trimmer head, spool area, and motor housing. Avoid using water directly on the motor or electrical components.
For stubborn debris, a slightly damp cloth can be used, ensuring it’s thoroughly dried afterward. Inspect the air vents and clear any obstructions to prevent overheating.
Lubrication Guidelines
Black & Decker generally designs their string trimmers to be relatively maintenance-free regarding lubrication. However, periodic attention to key components can significantly prolong the trimmer’s life.
Focus lubrication efforts on the trimmer head’s rotating shaft. Apply a small amount of lithium-based grease to the shaft after disassembling it for cleaning. This reduces friction and ensures smooth operation.
Avoid over-lubrication, as excess grease can attract dirt and debris. Do not lubricate the motor itself, as it’s typically sealed. Regularly check and clean the spool assembly to prevent binding.
Battery Care (for cordless models)

Black & Decker cordless string trimmers utilize Lithium-Ion batteries for optimal performance. To maximize battery life, avoid completely discharging it before recharging. Partial charges are preferable to full discharge cycles.
Store batteries in a cool, dry place, away from direct sunlight and extreme temperatures. When storing for extended periods, charge the battery to approximately 50% capacity.
Use only the Black & Decker charger specifically designed for your battery model. Avoid using damaged or incompatible chargers. Regularly inspect the battery for any signs of damage, and discontinue use if found.
Troubleshooting Common Issues
Black & Decker string trimmer problems are often easily resolved. If the trimmer line breaks frequently, ensure proper spool loading and consider using heavier-duty line. A motor that won’t start may indicate a discharged battery (for cordless models) or a faulty power connection (corded models).
For automatic feed issues, check for debris obstructing the spool housing. Ensure the line is properly seated and the spool isn’t empty. If problems persist, consult the manual’s diagrams or contact Black & Decker support.
Always disconnect power before inspecting or attempting repairs.
Trimmer Line Breaks Frequently
Frequent line breakage on your Black & Decker string trimmer often stems from improper loading or using the wrong line type. Ensure the spool is wound tightly and evenly, avoiding gaps. Consider upgrading to a heavier gauge line, especially when tackling thicker weeds or brush.
Inspect the trimmer head for any rough edges or obstructions that could be causing friction. Avoid trimming against hard surfaces like concrete, as this accelerates wear. Regularly check and replace the spool when it becomes low, preventing the motor from straining.
Proper technique minimizes breakage.
Motor Not Starting
If your Black & Decker string trimmer’s motor fails to start, first verify the power source. For corded models, check the outlet and cord for damage. For cordless versions, ensure the battery is fully charged and properly inserted, confirming a secure connection.
Inspect the trimmer head for obstructions like tangled weeds or debris. A jammed head prevents motor operation. Check the trigger lock-off mechanism, ensuring it’s fully disengaged. If issues persist, examine the motor brushes (if applicable) for wear and replace if needed.
Consult the manual for specific troubleshooting steps.
Automatic Feed Not Working
If the automatic line feed isn’t functioning on your Black & Decker string trimmer, ensure the spool is correctly installed and the line isn’t tangled within the spool housing. Some models require a firm tap of the trimmer head on the ground to initiate the feed – verify this action is performed correctly.
Inspect the spool for sufficient line; a nearly empty spool won’t feed automatically. Clean the feed holes on the spool cap, removing any debris that might be causing a blockage. If the issue continues, disassemble and reassemble the spool, ensuring proper alignment.
Refer to your model’s manual for detailed instructions.
Finding Replacement Parts
Locating replacement parts for your Black & Decker string trimmer is crucial for maintaining its performance. Always begin by identifying your specific model number, typically found on the trimmer’s housing. This number is essential for accurate parts lookup on the official Black & Decker website or authorized retailers.
You’ll encounter both Genuine OEM (Original Equipment Manufacturer) parts and aftermarket options. OEM parts guarantee compatibility and quality, while aftermarket alternatives may be more affordable but potentially less durable. Prioritize OEM for critical components like the motor or spool assembly.
Ensure the part number matches before purchasing.
Using Model Numbers for Parts Lookup
Your Black & Decker string trimmer’s model number is the key to finding the correct replacement parts. Locate this number on the device itself – usually a sticker on the motor housing or near the handle. Inputting this number into the Black & Decker website’s parts finder ensures compatibility.
Avoid relying on visual similarities alone, as even slight variations between models can necessitate different parts. The model number precisely identifies your trimmer’s configuration. Online retailers also utilize this number for accurate searches. Double-check the part number before finalizing your order to prevent errors.

Accurate identification saves time and frustration.
Genuine OEM Parts vs. Aftermarket Options

Genuine OEM (Original Equipment Manufacturer) parts for your Black & Decker string trimmer are manufactured to the exact specifications as the original components, ensuring a perfect fit and optimal performance. While often more expensive, they guarantee compatibility and maintain your trimmer’s warranty.
Aftermarket parts, produced by third-party manufacturers, are generally cheaper but may vary in quality. Compatibility isn’t always assured, potentially leading to fit issues or reduced lifespan. Using non-genuine parts could void your warranty.
Consider long-term cost and performance when choosing; OEM parts often prove more economical due to durability.
Understanding Warranty Information
Black & Decker provides warranties on their string trimmers, varying by model and purchase date. Typically, warranties cover defects in materials and workmanship for a specified period, often one to three years. Registration of your product is frequently required to activate the full warranty coverage.
The warranty doesn’t cover damage from misuse, normal wear and tear, or unauthorized repairs. Keep your proof of purchase and refer to the official warranty statement included with your trimmer.
Modifying the trimmer or using non-OEM parts may invalidate the warranty. Contact Black & Decker customer support for specific details.
Disposal and Recycling
Responsible disposal of your Black & Decker string trimmer is crucial for environmental protection; Do not simply discard it with household waste. Lithium-ion batteries, found in cordless models, require special handling due to potential hazards.
Check with your local waste management authorities for designated recycling locations for power tools and batteries. Black & Decker may also participate in take-back programs or offer recycling guidance on their website.
Proper recycling helps recover valuable materials and prevents harmful substances from entering the environment. Always follow local regulations for disposal.
Frequently Asked Questions (FAQ)
Q: Why won’t my trimmer line advance? A: Ensure the spool is correctly installed and the auto-feed system isn’t obstructed. Try manually advancing the line.
Q: What if the motor won’t start? A: Check the battery charge (cordless models) or power connection (corded). Inspect for damaged cords or a tripped circuit breaker.
Q: Where can I find replacement parts? A: Utilize the model number to search online retailers or the Black & Decker website for genuine OEM parts;
Q: What does “swath size” mean? A: It refers to the width of the cutting area.
Where to Find Official Black & Decker Manuals
Black & Decker provides several avenues for accessing official manuals. The primary resource is their official website, where you can search by model number to locate a downloadable PDF version of your string trimmer manual.
Many retailers that sell Black & Decker products also offer links to manuals on their websites. Additionally, some online databases specialize in archiving appliance manuals, providing another potential source.
Ensure you have your trimmer’s specific model number readily available for an accurate search. Accessing the official manual guarantees you have the most up-to-date safety information and operating instructions.
Comparing Black & Decker String Trimmer Models
Black & Decker offers a range of string trimmer models catering to diverse yard sizes and user preferences. Corded models provide consistent power, ideal for larger areas, while cordless options offer freedom and maneuverability.

Consider the cutting swath size; wider swaths cover more ground quickly. Battery voltage (in cordless models) impacts runtime and power – higher voltage generally means longer use and greater cutting capability.
Features like automatic feed spools and adjustable handles enhance convenience. Reviewing specifications and user reviews helps determine the best model for your specific needs and lawn conditions.
Accessories for Black & Decker String Trimmers
Enhance your Black & Decker string trimmer’s versatility with available accessories. Replacement string trimmer line is essential, available in various shapes and thicknesses for different cutting needs.
Edge guides provide precise edging along sidewalks and driveways, while shoulder straps distribute weight for comfortable extended use. Some models benefit from brush cutter attachments for tackling thicker vegetation.
Consider extension poles for reaching difficult areas. Always ensure accessory compatibility with your specific model number. Genuine Black & Decker accessories guarantee optimal performance and longevity.

String Trimmer vs. Other Weed Control Methods
Compared to manual weeding, a Black & Decker string trimmer offers significantly faster and more efficient weed control, especially for larger areas. While herbicides provide chemical solutions, trimmers offer an eco-friendly alternative, releasing zero emissions.
Unlike heavier brush cutters, string trimmers are lightweight and maneuverable, ideal for trimming around obstacles. They excel at maintaining lawns and gardens, reaching areas mowers can’t access.
However, trimmers may struggle with very dense or woody vegetation where brush cutters are more effective. Choosing the right method depends on your specific weed control needs and preferences.