Welcome to the Greenworks String Trimmer manual! This guide helps you safely and effectively use your trimmer for cutting grass and weeds, covering assembly, operation, and maintenance. Suitable for models like 40V, 60V, and 80V, it ensures optimal performance for all users.
Product Overview
The Greenworks String Trimmer is a versatile and efficient tool designed for cutting grass, light weeds, and other vegetation at ground level. Available in various models, including 40V, 60V, and 80V options, it offers cordless convenience and reliable performance. The trimmer features a robust design with adjustable handles and a rotating head, allowing seamless switching between trimming and edging modes. Its cutting line advances automatically, eliminating the need for manual adjustments, while the spring-loaded mechanism ensures consistent line feeding. The trimmer is compatible with a range of accessories, such as replacement spools and cutting blades, making it adaptable to different tasks. With a focus on eco-friendly technology, Greenworks trimmers are battery-powered, reducing emissions and noise compared to gas-powered alternatives. The included lithium-ion batteries provide extended runtime, with some models offering up to 65 minutes of continuous use. Designed for both homeowners and professionals, the Greenworks String Trimmer combines power, portability, and ease of use, making it an ideal choice for maintaining lawns and gardens.
Key Features
The Greenworks String Trimmer boasts an array of innovative features designed to enhance your trimming experience. Its powerful brushless motor delivers consistent performance and extended tool life. The adjustable handle and rotating trimmer head allow for precise cutting and easy switching between trimmer and edger modes. The automatic line feeding system ensures continuous operation without manual adjustments, while the spring-loaded mechanism releases the perfect amount of line with each trigger pull. Compatible with a variety of accessories, including different cutting lines and blades, the trimmer adapts to various tasks. The included lithium-ion batteries provide long runtime, with some models offering up to 65 minutes on a single charge. Lightweight and ergonomic, the trimmer reduces fatigue during extended use. Additional features include a flower guard to protect plants and a quick-release mechanism for easy assembly and maintenance. These features make the Greenworks String Trimmer a versatile and efficient tool for lawn care, suitable for both small and large areas.

Safety Precautions
Always wear protective gear, including gloves and safety glasses, when operating the Greenworks String Trimmer. Keep children and pets away during use. Avoid loose clothing that could get caught in the trimmer. Ensure the area is clear of debris and obstacles. Never touch the cutting line while the trimmer is in operation, and store the tool in a dry, secure location when not in use.
Personal Protective Equipment
Wearing the right protective gear is crucial when operating the Greenworks String Trimmer. Always wear safety glasses or goggles to protect your eyes from flying debris. Gloves are also essential to maintain a firm grip and prevent blisters. Long pants or sturdy work clothes can shield your legs from accidental cuts or scratches. Additionally, closed-toe shoes or work boots are recommended to protect your feet from potential hazards. Avoid loose clothing or jewelry that could get caught in the trimmer. Keep long hair tied back to prevent it from interfering with the machine. These precautions ensure your safety while trimming, reducing the risk of injury. By following these guidelines, you can enjoy a safe and efficient trimming experience with your Greenworks String Trimmer.
Safe Handling and Operation
Always handle the Greenworks String Trimmer with care to ensure safe and effective operation. Hold the trimmer firmly with both hands, maintaining a secure grip on the rear and auxiliary handles. Keep your body balanced and avoid overreaching, as this could cause loss of control. Never touch the cutting line with your hands or feet, as it moves at high speed and can cause injury. Avoid operating the trimmer in wet conditions or near open flames, as this could lead to electrical hazards or fires. Do not use the trimmer in a moving vehicle or while in motion. Keep children and pets away from the operating area to prevent accidents. Ensure the area is clear of debris, toys, or other obstacles that could interfere with the trimmer or create hazards. Always operate the trimmer with the cutting line parallel to the ground and avoid trimming near sensitive plants or flowers unless using a flower guard. By following these guidelines, you can ensure a safe and efficient trimming experience.
Environmental Warnings
When using the Greenworks String Trimmer, it is important to consider environmental factors to minimize ecological impact. Always dispose of the trimmer’s battery and other components responsibly, following local recycling guidelines to prevent hazardous waste. Avoid trimming in wet conditions, as this can damage the tool and potentially harm aquatic life if used near water sources. Be mindful of protected plants and flowers by using the flower guard attachment to prevent accidental cutting. Do not operate the trimmer near open flames or sparks, as this could ignite debris and cause fires. Keep the trimming area clear of leaves and small branches to avoid spreading fire hazards. Additionally, avoid using the trimmer in areas with sensitive ecosystems or wildlife habitats to preserve biodiversity. By adhering to these environmental warnings, you can help protect the environment while maintaining your yard effectively.

Assembly and Setup

Begin by carefully unboxing and inspecting all components. Attach the handle and accessories according to the manual. Align the trimmer head and shaft properly, ensuring all parts are securely locked. Refer to the manual for specific model instructions.
Identifying Parts and Components
Familiarize yourself with the key parts of your Greenworks String Trimmer to ensure proper assembly and operation. The trimmer head houses the cutting line and spool, while the shaft connects the head to the handle. The handle features an auxiliary grip for better control. The battery compartment is located on the rear handle for cordless models. Additional components include the protective guard, which prevents debris from flying back, and the trigger or throttle for activating the trimmer. Some models may include adjustable handles or a pivoting head for edging. The cutting line is fed automatically or manually, depending on the model, and the spool holds the line in place. Understanding these components will help you assemble, maintain, and operate your trimmer effectively. Always refer to the manual for specific part locations and descriptions unique to your model.
Attaching Accessories and Handles
Attaching accessories and handles to your Greenworks String Trimmer is essential for optimal performance and comfort. Begin by aligning the auxiliary handle with the main shaft, ensuring it clicks securely into place. Tighten the handle using the provided screws or knobs until it feels stable. For models with adjustable handles, slide the handle to your preferred length and lock it firmly. If your trimmer supports attachments, such as a hedge trimmer or blower, align the attachment’s connector with the trimmer’s shaft. Secure it by twisting and locking it into place. Always refer to the manual for specific attachment compatibility. After attaching any accessory, test the trimmer to ensure it operates smoothly. Properly fitted handles and accessories enhance control and versatility, allowing you to tackle various tasks efficiently. If unsure, consult the manual for detailed instructions tailored to your model.

Operating the Trimmer
Hold the trimmer with your right hand on the rear handle and left hand on the auxiliary handle. Maintain a firm grip for control. Keep the cutting plane parallel to the ground for effective trimming.

Using Trimmer Mode
To use your Greenworks string trimmer in Trimmer Mode, start by ensuring the cutting head is properly aligned and the line is at the correct length. Hold the trimmer with your right hand on the rear handle and your left hand on the auxiliary handle for better control. Keep the cutting plane parallel to the ground to maintain even cutting and avoid damaging plants or surfaces.
For cordless models, press the trigger to start the trimmer. For electric models, ensure the switch is in the “on” position. Move the trimmer in a steady, sweeping motion, working in small sections to maintain visibility. Avoid cutting too close to flowers, shrubs, or other delicate plants by using the flower guard if available.

If the line runs low, bump the trimmer head on the ground to release more line. For models without a bump feed, stop the trimmer, wait two seconds, and restart to advance the line. Always keep the trimmer at a comfortable height to avoid strain and ensure precise cutting. Follow these steps for efficient and safe trimming results.
Switching to Edger Mode
To switch your Greenworks string trimmer to Edger Mode, locate the adjustment button on the trimmer head. Press this button and rotate the head 90 degrees clockwise or counterclockwise until it locks into place. This converts the trimmer into a precise edging tool for clean, defined borders.
Once in Edger Mode, the cutting line will adjust to a shorter length, ideal for edging. Hold the trimmer vertically, keeping the cutting plane parallel to the ground. Use a steady, back-and-forth motion to create sharp edges along sidewalks, gardens, or lawns. For optimal results, maintain a consistent speed and avoid applying too much pressure, which could damage the line or nearby surfaces.
After edging, return the head to its original position for trimming. Always ensure the line is properly advanced and the trimmer is turned off before storing. This feature allows for versatile use, making your Greenworks trimmer a multi-functional tool for yard maintenance.
Adjusting the Trimmer Head
To adjust the trimmer head on your Greenworks string trimmer, start by locating the adjustment button or mechanism. Depending on the model, this may involve pressing a button and rotating the head. For example, press the button and rotate the head 90 degrees to switch between Trimmer Mode and Edger Mode. This feature allows you to customize the tool for different tasks, ensuring precise cutting and edging.
Some models feature a spring-loaded mechanism that automatically locks the head in place after adjustment. After rotating, the head will securely click into its new position. Always ensure the head is properly aligned and locked before use. For further adjustments, such as changing the cutting line length or angle, refer to the specific instructions in your manual. Proper adjustment ensures optimal performance and extends the life of your trimmer. Regularly check and adjust the head to maintain accuracy and efficiency in your yard work.

Maintenance and Care
Regular maintenance ensures your Greenworks string trimmer performs optimally. Clean the trimmer head and line after each use to prevent debris buildup. Store the tool in a dry place, away from direct sunlight, to protect the battery and components. Always follow the manual’s guidelines for proper care and storage to extend the product’s lifespan and maintain its efficiency.
Cleaning the Trimmer
Regular cleaning is essential to maintain the performance and longevity of your Greenworks string trimmer. Start by disconnecting the battery or unplugging the tool to ensure safety. Remove any debris, such as grass clippings or dirt, from the trimmer head and line using a soft brush or cloth. For tougher buildup, a mild detergent and water solution can be used, but avoid submerging electrical components. Pay special attention to the cutting line and spool, as clogged lines can hinder functionality. Wipe down the exterior with a damp cloth to remove dirt and grime. Allow all parts to dry completely before storing or reusing the trimmer. Cleaning after each use prevents debris from hardening and causing damage. Additionally, inspect the trimmer head for worn or damaged parts and replace them as needed. Regular maintenance ensures your Greenworks string trimmer remains efficient and ready for use. Always refer to the manual for specific cleaning instructions tailored to your model.
Storing the Trimmer
Proper storage of your Greenworks string trimmer is crucial to maintain its performance and longevity. After cleaning, ensure the trimmer is completely dry to prevent rust or corrosion. For cordless models, remove the battery and store it in a cool, dry place away from direct sunlight. Avoid storing the trimmer in extreme temperatures or humid environments, as this can damage the motor or battery. If storing for an extended period, drain the battery to about 50% charge to prevent over-discharge. Hang the trimmer securely on a hook or place it in a protective case to avoid accidental damage. Always store the trimmer out of reach of children and pets. Check the trimmer for any damage or wear before storage and address any issues to ensure it is ready for the next use. Proper storage will help preserve the trimmer’s functionality and extend its lifespan. Follow these steps to keep your Greenworks string trimmer in optimal condition when not in use.
Replacing Parts and Accessories
Replacing parts and accessories on your Greenworks string trimmer is essential for maintaining its performance and extending its lifespan. Always use genuine Greenworks parts to ensure compatibility and safety. Start by identifying the specific part you need, such as the cutting line, bump button, or trimmer head, and refer to the manual for guidance. For most models, you can purchase replacement parts directly from Greenworks or authorized retailers. When replacing the cutting line, ensure it matches the recommended specifications to avoid damaging the trimmer. To replace the bump button, disconnect the spring and remove the old button before installing the new one. For the trimmer head, follow the manual’s instructions to secure it properly. Regularly inspect and replace worn or damaged parts, such as the spool or blades, to maintain optimal functionality. If you’re unsure about any replacement process, contact Greenworks customer support for assistance. Properly dispose of old parts and keep track of any screws or small components during replacement. Regular maintenance and timely replacements will keep your Greenworks string trimmer running efficiently for years to come.

Troubleshooting Common Issues
Address common issues like line feeding problems, battery charging faults, and motor performance by checking the manual. Ensure proper line installation, charge batteries fully, and clean debris from the trimmer head regularly for smooth operation.
Line Feeding Problems
Line feeding issues are common in Greenworks string trimmers and can be resolved with simple troubleshooting steps. If the cutting line does not advance automatically, stop the machine and release the trigger. Wait for two seconds, then press the trigger again to restart the trimmer. This action should release approximately 0.4 inches of line. For manual adjustment, turn off the trimmer, pull out a few inches of line, and reinsert it into the spool. Ensure the line is properly aligned and not tangled. If the problem persists, check for debris or damage in the spool or cutting head. Clean or replace worn parts as needed. Always use the recommended line diameter and type for your specific model, as specified in the manual. If the issue continues, consult the troubleshooting section or contact Greenworks customer support for assistance. Regular maintenance and proper line installation will help prevent feeding problems and ensure smooth operation.

Battery and Charging Issues
If your Greenworks string trimmer experiences battery or charging issues, start by ensuring the battery is properly seated and the charger is correctly connected. Check the power button and battery contacts for dirt or damage. If the trimmer does not turn on, verify that the battery has enough charge by plugging it into the charger. Allow it to charge for at least 30 minutes before testing again. For charging problems, ensure the charger is functioning by testing it with another compatible battery. If the battery does not charge, inspect the charging port for debris or corrosion and clean it gently with a soft cloth. Avoid exposing the battery to extreme temperatures, as this can affect performance. If issues persist, reset the battery by pressing and holding the power button for 10 seconds. For older models, consult the manual for specific troubleshooting steps. Always use Greenworks-approved chargers and batteries to maintain compatibility and safety. If the problem remains unresolved, contact Greenworks customer support for further assistance or potential replacement.
Motor and Performance Issues
If your Greenworks string trimmer experiences motor or performance issues, start by checking for blockages or debris in the cutting head or air vents. Ensure the trimmer is turned off and the battery is removed before inspecting. Overheating can occur due to excessive use or thick vegetation; allow the motor to cool down for 10-15 minutes before resuming. If the motor is noisy or vibrates excessively, inspect for worn or damaged internal components. For models with a brushless motor, ensure proper alignment and connection of internal parts. If the trimmer lacks power, check the battery charge level and ensure it is fully charged. Avoid using the trimmer in wet conditions, as moisture can damage the motor. Regularly clean the trimmer head and ensure proper line tension to maintain efficiency. If issues persist, consult the manual for specific troubleshooting steps or contact Greenworks customer support for professional assistance. Always follow recommended maintenance practices to ensure optimal performance and extend the lifespan of your trimmer.
In conclusion, your Greenworks String Trimmer is a reliable tool for efficient yard maintenance. Always follow safety guidelines, use the trimmer correctly, and address any issues promptly for optimal performance and longevity.
Final Tips for Optimal Use
To maximize the performance and longevity of your Greenworks String Trimmer, follow these essential tips:
- Hold the trimmer correctly: Grip the rear handle with your right hand and the auxiliary handle with your left for better control and balance.
- Maintain the cutting line: Regularly check and replace the trimmer line to ensure efficient cutting. Use the recommended line thickness for your model.
- Clean the trimmer head: Remove debris and grass clippings after each use to prevent clogging and maintain smooth operation.
- Store properly: Keep the trimmer in a dry, cool place, away from direct sunlight. Store the battery separately if not in use for extended periods.
- Monitor battery levels: Avoid over-discharging the battery. Recharge it when the power drops to 20% to prolong its lifespan.
- Use protective gear: Always wear safety goggles, gloves, and long pants to protect yourself from flying debris.
By following these tips, you can ensure your Greenworks String Trimmer performs at its best and lasts for years to come.