EGO Power+ ST1623T
EGO Power+ ST1623T 56-Volt 16-Inch Cordless String Trimmer Instruction Manual
1. Product Overview
The EGO Power+ ST1623T 56-Volt 16-Inch Cordless String Trimmer is designed for efficient lawn maintenance. It features advanced technologies for ease of use and durability.
Key Features:
- LINE IQ Technology: Auto-sensing technology monitors and feeds the string trimmer line for a continuous 16-inch cutting swath, eliminating the need for manual bumping.
- POWERLOAD Technology: Simplifies line replacement. Feed the line through the eyelets on the trimmer head, press a button, and the line automatically winds.
- Telescopic Carbon Fiber Shaft: Allows for quick adjustment of shaft length for user comfort and is backed by a limited lifetime warranty.
- Runtime: Delivers up to 60 minutes of continuous cutting with the included 4.0Ah ARC Lithium battery. Compatible with all EGO 56V ARC Lithium batteries.
- Brushless Motor: High-efficiency brushless motor for extended runtime and performance.
- Weather-Resistance: IPX4-rated for use in various weather conditions.
2. Setup and Assembly
The EGO Power+ ST1623T requires some assembly before first use. Follow these steps to prepare your trimmer for operation.
2.1 Unboxing and Initial Inspection
Carefully remove all components from the packaging. Inspect for any damage. The package includes the string trimmer, a 4.0Ah battery, a 320W charger, and an additional BA1400T 2.5Ah battery (shipped separately).
Video: Unboxing the EGO Cordless Trimmer. This video demonstrates the unboxing process and initial components of the trimmer.
2.2 Battery Installation
Ensure the battery is fully charged before installation. Align the battery with the battery slot on the trimmer handle and slide it in until it clicks securely into place.

Image: The EGO Power+ ST1623T String Trimmer with a 56V ARC Lithium battery installed in the handle.
2.3 Adjusting the Handle and Shaft Length
The trimmer features a telescopic carbon fiber shaft and an adjustable handle for optimal comfort and control. Loosen the adjustment collar on the shaft to extend or retract the shaft to your desired length. The auxiliary handle can also be adjusted along the shaft for ergonomic positioning.

Image: A close-up view of the EGO Power+ trimmer's adjustable handle and the telescopic carbon fiber shaft, highlighting the adjustment mechanism.
2.4 Loading Trimmer Line with POWERLOAD Technology
The POWERLOAD technology simplifies line replacement. Ensure the trimmer is off and the battery is removed before loading line.
- Align the arrows on the trimmer head.
- Feed the new trimmer line directly through the eyelets on the trimmer head until an equal length protrudes from both sides.
- Insert the battery and press the POWERLOAD button (usually green) on the trimmer head. The trimmer will automatically wind the line.
Video: Demonstration of the POWERLOAD feature on the EGO Cordless String Trimmer. This video shows how to easily load new trimmer line by feeding it through and pressing a button.
3. Operating Instructions
Familiarize yourself with the controls and safety features before operating the string trimmer.
3.1 Powering On and Off
- To start: Ensure the battery is securely installed. Press and hold the safety switch, then squeeze the trigger.
- To stop: Release the trigger. The trimmer will power off.
3.2 Speed Settings
The trimmer offers variable speed control. Use lower speeds for lighter trimming tasks and higher speeds for dense weeds or tougher conditions.
- Low Speed: Ideal for light trimming and extending battery life.
- High Speed: Provides maximum power for challenging areas.
3.3 Trimming and Edging Techniques
For effective trimming, hold the trimmer head parallel to the ground. For edging, rotate the head to a vertical position. The LINE IQ technology automatically feeds line as needed, so there is no need to bump the head.

Image: The EGO Power+ trimmer head in action, demonstrating the Line IQ technology for continuous trimming.
Video: EGO Weed Whip in action. This video demonstrates the trimmer's performance in various trimming scenarios.
4. Maintenance
Regular maintenance ensures optimal performance and extends the life of your EGO Power+ String Trimmer.
4.1 Cleaning the Trimmer Head
After each use, remove the battery and clean any grass clippings or debris from the trimmer head and guard. This prevents buildup that can affect performance.

Image: The EGO Power+ trimmer head, showing typical grass clippings that should be cleaned after use.
4.2 Battery Care and Storage
Store batteries in a cool, dry place. For long-term storage, ensure batteries have a 50-60% charge to maintain their health. Avoid storing fully charged or completely depleted batteries for extended periods.

Image: An EGO 56V ARC Lithium battery, highlighting its compatibility across multiple EGO tools.
4.3 Trimmer Line Replacement
When the trimmer line runs out, replace it using the POWERLOAD technology as described in the Setup section (2.4). Use .095" professional cutting line for best results.
5. Troubleshooting
If you encounter issues with your EGO Power+ String Trimmer, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not start | Battery not installed correctly or discharged. Safety switch not engaged. | Ensure battery is fully charged and securely clicked into place. Press the safety switch before squeezing the trigger. |
| Line does not feed automatically | Line is tangled or depleted. Trimmer head is clogged with debris. | Check line level and replace if necessary using POWERLOAD. Clean the trimmer head of any debris. |
| Reduced cutting performance | Dull or worn trimmer line. Low battery charge. | Replace trimmer line. Recharge the battery. |
| Excessive vibration | Trimmer line is unevenly loaded or damaged. | Ensure line is evenly distributed in the head. Replace damaged line. |
6. Specifications
- Brand: EGO Power+
- Model Number: ST1623T
- Power Source: Battery Powered (56-Volt ARC Lithium)
- Cutting Width: 16 Inches
- Line Diameter: .095 Inches
- Assembly Required: Yes
- Included Batteries: 4.0Ah Battery, 2.5Ah Battery (BA1400T)
- Included Charger: 320W Charger
- Shaft Material: Carbon Fiber
- Weather Resistance: IPX4-rated
7. Warranty and Support
The EGO Power+ ST1623T String Trimmer comes with a limited lifetime warranty on its carbon fiber shaft. For full warranty details and to maximize benefits, register your tools and batteries within 90 days of purchase.
For technical support, service, or warranty claims, please refer to the contact information provided in your product's official documentation or visit the EGO Power+ website.
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