
gh900 manual
GH900 Manual: Overview and Specifications
The GH900 is a lightweight, 6.5 Amp trimmer/edger, easily converting between modes. It includes an AF-100 spool, auxiliary handle, and guard for versatile yard work.
Welcome to the GH900 electric string trimmer and edger! This manual provides essential information for safe and effective operation. Designed for tackling tough weeds, grass, and overgrowth, the GH900 boasts an ergonomic and lightweight build at 6.73 lbs. Its innovative 2-in-1 design allows seamless conversion from a trimmer to an edger, enhancing versatility in your landscaping tasks.
The GH900 package includes an AF-100 spool, an auxiliary handle, and a guard, ensuring you have everything needed to begin. This trimmer is compatible with several models, including GH400, GH500, and GH600.
Key Features of the GH900
The GH900 stands out with its lightweight design and ergonomic build, making yard work less strenuous. Its powerful 6.5 Amp motor delivers reliable performance for various trimming and edging tasks. The automatic feed system, utilizing the AF-100 spool (0.065″ diameter, 30ft length), eliminates bumping and constant spool feeding.
Effortlessly switch between trimmer and edger modes with the easy 2-in-1 conversion feature. The included auxiliary handle and guard enhance control and safety during operation. It’s designed for compatibility with multiple Black+Decker models.

Technical Specifications
The GH900 operates at 6.5 Amps and weighs 6.73 lbs. It utilizes a 0.065-inch diameter AF-100 spool, ensuring efficient trimming and edging performance.
Voltage and Amperage
The GH900 is designed for standard household electrical systems, offering convenient operation without the complexities of gas-powered alternatives. This electric trimmer/edger boasts a robust 6.5-amp motor, delivering sufficient power to tackle a variety of yard maintenance tasks. This amperage rating strikes a balance between performance and energy efficiency, allowing for extended use without excessive power consumption.
The voltage is compatible with typical 120V outlets found in most homes, eliminating the need for specialized power sources or extension cords. The 6.5-amp motor provides ample torque for cutting through weeds, grass, and overgrowth, making it a reliable tool for both trimming and edging applications.
Weight and Dimensions
The GH900 is engineered with user comfort in mind, prioritizing a lightweight design for extended use without fatigue. Weighing in at just 6;73 lbs, this trimmer/edger is easily maneuverable for a wide range of users. Its balanced weight distribution further enhances control and reduces strain during operation.
While specific dimensions aren’t explicitly detailed, the GH900’s compact build allows for easy storage and transport. The ergonomic design contributes to its overall usability, making it a practical choice for homeowners seeking a versatile and manageable yard tool. Note that product dimensions may vary slightly.
Spool Diameter and Length
The GH900 utilizes the AF-100 replacement spool, which features a diameter of 0.065 inches. This spool size is optimized for efficient trimming and edging performance, delivering reliable cutting power. The AF-100 spool boasts a length of 30 feet, providing ample line for tackling various yard tasks without frequent replacements.
This automatic feed system ensures continuous operation, eliminating the need to manually bump or stop to reload the spool. The AF-100 is compatible with multiple Black+Decker models, including GH400, GH500, GH600, and more, offering convenient accessibility.

Components and Parts
The GH900 package includes one AF-100 spool, an auxiliary handle for enhanced control, and a guard for user safety during operation.
Included Accessories (AF-100, Handle, Guard)
Your GH900 package arrives complete with several essential accessories to ensure immediate usability and enhanced performance. First, the AF-100 auto-feed replacement spool, boasting a 0.065-inch diameter and 30-foot length, provides continuous trimming without manual feeding interruptions. This spool is designed for compatibility with multiple Black+Decker models.
Additionally, an auxiliary handle is included, offering improved grip and maneuverability for comfortable operation during extended use. Finally, a robust guard is provided to shield the user from potential debris and enhance overall safety while trimming or edging. These components work together to deliver a comprehensive and user-friendly experience.
Replacement Spool Information (AF-100)
The AF-100 is the designated replacement spool for your GH900 trimmer/edger, ensuring consistent performance and uninterrupted operation. This spool features a 0.065-inch diameter line and a generous 30-foot length, providing ample trimming capacity. It utilizes an automatic feed system, eliminating the need for manual line advancement during use.
Compatibility extends beyond the GH900, encompassing models like GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7700, CST1000, and CST1200. Regularly replacing the spool with a genuine AF-100 maintains optimal cutting efficiency and prevents potential damage to the trimmer head; Ensure a secure fit for reliable performance.
Detailed Part Breakdown
The GH900 consists of several key components for efficient operation. The core is the 6.5 Amp motor, powering the trimmer/edger functionality. The included AF-100 spool houses the 0.065-inch diameter, 30-foot line, feeding automatically during use; An auxiliary handle provides enhanced control and comfort, while the guard ensures user safety by deflecting debris.
Further components include the trimmer head, responsible for line dispensing, and the edger conversion mechanism, allowing seamless mode switching. The lightweight design, weighing 6.73 lbs, contributes to maneuverability. Regular inspection of these parts ensures longevity and optimal performance of your GH900.

Assembly Instructions
Begin by attaching the auxiliary handle securely. Next, install the provided guard for safety. Finally, load the AF-100 spool following the spool loading procedure for operation.
Attaching the Auxiliary Handle
To properly attach the auxiliary handle to your GH900, locate the designated mounting points on the trimmer’s body. These are typically pre-drilled holes near the motor housing. Align the handle with these holes, ensuring a comfortable and secure grip position for the operator.
Using the screws provided in the accessories kit, carefully fasten the handle to the trimmer. Tighten the screws firmly, but avoid over-tightening, which could potentially damage the plastic components. Ensure the handle is stable and doesn’t wobble before proceeding. A correctly attached handle enhances control and reduces fatigue during use.
Guard Installation
Proper guard installation is crucial for operator safety when using the GH900. Begin by aligning the guard with the mounting slots located on the trimmer head. Ensure the guard fully encompasses the spool area, providing a barrier against flying debris.
Secure the guard using the provided fasteners – typically thumbscrews or clips. Tighten these firmly, but avoid excessive force. The guard should be securely attached, preventing movement during operation. Regularly inspect the guard for damage and ensure it remains properly installed before each use, prioritizing your safety.
Spool Loading Procedure
To load a new AF-100 spool, press and hold the spool release buttons on the trimmer head. Remove the empty spool, noting the line’s exit path. Insert the new AF-100 spool into the head, ensuring the line end engages with the line guide.
Wind the line slightly to secure it, then align the spool’s slots with the head’s tabs. Snap the spool cover back into place until it clicks, confirming a secure fit. Always use genuine Black+Decker AF-100 replacement spools for optimal performance and safety.

Operating Instructions
The GH900 easily switches between trimmer and edger modes. Use the power switch for operation, ensuring the AF-100 spool is correctly loaded for optimal cutting.
Trimmer Mode Operation
To operate in trimmer mode with the GH900, ensure the unit is securely held with both hands, maintaining a firm grip on the auxiliary handle. Begin trimming by gently sweeping the trimmer head side-to-side, allowing the rotating string to cut the grass and weeds. Avoid applying excessive pressure, letting the trimmer do the work.
Maintain a safe distance from obstacles like trees, fences, and structures. Regularly check the AF-100 spool for wear and replace as needed to ensure consistent cutting performance. For thicker overgrowth, make multiple passes, gradually working your way through the vegetation. Always wear appropriate safety gear, including eye protection.
Edger Mode Conversion
Converting the GH900 to edger mode is a simple process. Rotate the trimmer head 180 degrees, ensuring it locks securely into the edger position. The unit features a 2-in-1 easy conversion wheeled edging system. Once rotated, the trimmer string will now be oriented vertically for creating clean, defined edges along sidewalks, driveways, and patios.
Maintain a steady pace while edging, guiding the wheel along the desired surface. Avoid tilting the edger, keeping it upright for a precise cut. Regularly inspect the string for wear and replace the AF-100 spool as needed. Always prioritize safety and wear appropriate protective gear.
Power Switch and Controls
The GH900’s power switch is conveniently located for easy access during operation. Ensure the switch is in the “off” position before connecting the trimmer to a power source. To start, firmly press and hold the power switch. Release the switch to immediately stop the motor.
This unit doesn’t appear to have variable speed controls; it operates at a fixed speed powered by its 6.5 Amp motor. Always disconnect the power cord before making any adjustments or performing maintenance. Familiarize yourself with the switch location and operation before each use for safe and efficient trimming.

Maintenance and Care
Regular maintenance ensures optimal performance. Replace the AF-100 spool as needed, clean the unit after each use, and store it in a dry location.
Spool Replacement
Replacing the spool on your GH900 is a straightforward process, ensuring continuous operation. Begin by disconnecting the power source for safety. Remove the empty spool by pressing the release buttons on the trimmer head and pulling it out. The GH900 is designed to work with the AF-100 replacement spool, featuring a 0.065-inch diameter and 30-foot length.
Insert the new AF-100 spool, ensuring the line feeds correctly through the eyelets. Align the spool with the release buttons and firmly press until it clicks into place. Always use genuine Black+Decker replacement spools for optimal performance and to avoid damaging your trimmer. Proper spool installation maintains the automatic feed system.
Cleaning Procedures
Maintaining your GH900 requires regular cleaning to ensure optimal performance and longevity. Always disconnect the power source before any cleaning procedure. Wipe down the trimmer and edger housing with a damp cloth to remove grass clippings and debris. Inspect the spool area and remove any tangled line or accumulated dirt.
Avoid using harsh chemicals or abrasive cleaners, as these can damage the plastic components. Check the auxiliary handle and guard for buildup and clean accordingly. Proper cleaning after each use prevents corrosion and ensures smooth operation of the automatic feed system, extending the life of your GH900.
Storage Guidelines
Proper storage of your GH900 is crucial for maintaining its condition. Before long-term storage, thoroughly clean the unit, removing all grass and debris as detailed in the cleaning procedures. Store the trimmer/edger in a dry, covered location, away from direct sunlight and extreme temperatures.
Avoid storing near corrosive materials. Ensure the spool is empty or contains a minimal amount of line to prevent tangling. Keep the auxiliary handle and guard securely attached during storage. Following these guidelines will help preserve the GH900’s functionality and extend its lifespan.

Troubleshooting
Common issues with the GH900 include motor overheating or spool feeding problems. Refer to the following sections for solutions to ensure optimal performance.
Common Issues and Solutions
Issue: The GH900 may experience spool feeding problems, preventing continuous operation. Solution: Ensure the AF-100 spool is correctly loaded and the auto-feed system functions without obstruction. Inspect for tangled line or debris within the spool housing.
Issue: Motor overheating can occur during extended use. Solution: Allow the unit to cool down for at least 15-20 minutes. Avoid continuous operation without breaks. Ensure proper ventilation around the motor housing. Check for any obstructions hindering airflow. If overheating persists, discontinue use and seek support.
Issue: Trimmer line breaks frequently. Solution: Use only the recommended AF-100 replacement spool. Avoid trimming against hard surfaces like concrete or rocks;
Motor Overheating
Problem: Excessive motor heat during GH900 operation indicates potential strain or blockage. Prolonged use without adequate cooling can lead to damage. Solution: Immediately stop the trimmer and disconnect the power source. Allow the motor to cool completely – approximately 20-30 minutes – before attempting further use.
Prevention: Avoid continuous operation; work in shorter bursts with cooling intervals. Ensure the air vents are clear of debris, allowing for proper ventilation. Do not force the trimmer through excessively thick or dense vegetation, reducing strain on the motor.
If overheating persists, contact customer support.
Spool Feeding Problems
Problem: If the AF-100 spool isn’t feeding line correctly during GH900 operation, several factors could be at play. This often manifests as inconsistent line length or complete stoppage. Solution: First, ensure the spool is installed correctly, following the spool loading procedure. Check for tangled line within the spool housing; carefully unwind any knots.
Prevention: Use only genuine Black+Decker AF-100 replacement spools. Avoid overfilling the spool, as this can cause binding. Regularly inspect the line feed mechanism for debris or wear.
If issues continue, contact support.

Safety Precautions
Always wear protective gear, including eye protection, during GH900 operation. Follow general safety guidelines and electrical safety precautions to prevent injuries.
General Safety Guidelines
Before operating the GH900, carefully read this manual and understand all instructions. Keep bystanders, especially children and pets, a safe distance away from the work area. Inspect the trimmer/edger before each use, ensuring all parts are securely attached and in good working condition.
Never operate the GH900 with damaged cords or components. Avoid using in wet conditions or near flammable materials. Maintain a firm grip on the handles during operation, and be mindful of your surroundings. Disconnect the power source when not in use or performing maintenance. Always wear appropriate safety gear.
Protective Gear Recommendations
To ensure your safety while operating the GH900, wearing appropriate protective gear is crucial. Always wear safety glasses or a face shield to protect your eyes from flying debris. Hearing protection, such as earplugs or earmuffs, is recommended due to the trimmer’s operational noise.
Sturdy footwear is essential to prevent slips and injuries. Consider wearing long pants and gloves to shield your skin from potential cuts or abrasions. Avoid loose clothing that could get caught in the trimmer head. Prioritize your well-being by consistently using these safety measures.
Electrical Safety
Always inspect the power cord before each use, ensuring it’s free from damage. Never operate the GH900 with a frayed or damaged cord. Use a Ground Fault Circuit Interrupter (GFCI) outlet when operating outdoors to minimize electric shock risk. Avoid using the trimmer in wet or damp conditions.
Ensure the power switch is off before plugging in or unplugging the device. Never pull the cord to disconnect it from the outlet; grasp the plug instead. Store the trimmer indoors in a dry location to prevent electrical hazards. Prioritize electrical safety for a secure operation.

Compatibility
The GH900 is compatible with trimmer models GH400, GH500, GH600, GH610, GH912, ST6600, ST7000, and CST1000/1200 series, offering broad usability.
Compatible Trimmer Models (GH400, GH500, GH600, etc.)
The GH900 demonstrates excellent compatibility across a range of Black+Decker trimmer models, ensuring users have versatile options for replacement and upgrades. Specifically, it’s designed to work seamlessly with the GH400, GH500, and GH600 series trimmers. Further extending its usability, the GH900 is also compatible with the GH610 and GH912 models.
Beyond these, compatibility extends to several ST series trimmers, including the ST6600, ST7000, and ST7700. Finally, the GH900 also functions effectively with the CST1000 and CST1200 series, providing a comprehensive solution for various Black+Decker outdoor power equipment.
Compatible Edger Models
While primarily a trimmer, the GH900’s 2-in-1 design allows for easy conversion to an edger, broadening its functionality. Determining specific compatible edger models proves challenging as documentation focuses on trimmer compatibility. However, given its design and the shared AF-100 spool system, it’s reasonable to assume compatibility with Black+Decker edgers utilizing the same spool.
Users should verify fit and functionality before extended use. The GH900’s versatility makes it a valuable addition to any landscaping toolkit, offering both trimming and edging capabilities within a single, convenient tool.
Warranty Information
The GH900 is covered by a standard manufacturer’s warranty against defects in materials and workmanship. Contact Black+Decker support for specific coverage details and claims.
Warranty Coverage Details
The GH900’s warranty typically covers defects in materials and workmanship for a specified period from the date of purchase, often one to two years. This warranty doesn’t cover damage resulting from misuse, accidents, unauthorized repairs, or normal wear and tear. Specifically, the AF-100 spool is often covered separately, potentially with a shorter warranty duration.
To make a claim, retain your proof of purchase and contact Black+Decker customer support. They may require you to return the product for inspection. Warranty service is generally limited to repair or replacement of defective parts, at Black+Decker’s discretion. Shipping costs for warranty claims may or may not be covered.
Contact Information for Support
For GH900 support, visit the Black+Decker website for online resources, including FAQs and troubleshooting guides. You can also access online support forums where users share tips and solutions. Direct customer service is available via phone; check the Black+Decker website for the most current phone number, as it may vary by region.
Email support may also be offered, though response times can vary. When contacting support, have your model number (GH900) and proof of purchase readily available. Be prepared to describe the issue in detail to expedite the assistance process.
Additional Resources
Explore online support forums and frequently asked questions (FAQ) for the GH900. These resources offer troubleshooting tips and user-shared solutions for common issues.
Online Support Forums
Connect with fellow GH900 users and experienced technicians through dedicated online support forums. These platforms provide a valuable space to ask questions, share troubleshooting tips, and discuss best practices for maintaining your trimmer/edger. Users frequently post solutions to common problems, such as spool feeding issues or motor overheating, offering a wealth of collective knowledge.
Access these forums via various gardening and home improvement websites. Search specifically for “GH900 support forum” or “Black+Decker GH900 discussion” to locate relevant communities. Remember to provide detailed information when posting questions to receive the most helpful responses from other users.
Frequently Asked Questions (FAQ)
Q: What spool is compatible with the GH900? A: The AF-100 auto-feed replacement spool (0.065 in diameter, 30 ft length) is specifically designed for the GH900. Q: Which models can the GH900 replace? A: It’s compatible with GH400, GH500, GH600, GH610, GH900, GH912, ST6600, ST7000, ST7700, CST1000, and CST1200.
Q: How do I convert to edger mode? A: Simply rotate the trimmer head to switch between trimming and edging functions. Q: What is the GH900’s weight? A: The unit weighs 6.73 lbs, ensuring comfortable handling during yard work.