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EGO ST1500 - User Manual

EGO ST1500
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OPERATOR'S MANUAL
56-VOLT LITHIUM-ION
CORDLESS 15" BRUSHLESS
STRING TRIMMER
MODEL NUMBER ST1500/ST1500-S/
ST1500 STRAIGHT SHAFT/
ST1500-S FOLDABLE SHAFT
WARNING: To reduce the risk of injury, the user must read and understand the
Operator’s Manual before using this product. Save these instructions for future reference.
Español p. 33

Questions and Answers

  • J
    Justin McdanielAug 15, 2025
    How to fix an EGO ST1500 that fails to start?
    • J
      Jessica CallahanAug 16, 2025
      If your EGO Trimmer fails to start, here are a few things to check: * Ensure the battery pack is properly attached to the trimmer. * Remove the battery, check the contacts, and reinstall the battery pack to ensure good electrical contact. * Make sure the battery pack is charged. * Simultaneously press down the lock-off lever and depress the trigger to turn on the string trimmer.
  • V
    Vanessa StoneAug 21, 2025
    Why my EGO Trimmer won't start?
    • T
      Tyler BlairAug 21, 2025
      If your EGO Trimmer doesn't start, there are several potential reasons: * The battery pack might not be properly attached. Ensure the battery pack is securely attached to the trimmer. * There may be a poor electrical connection. Remove the battery, inspect the contacts, and then re-install the battery pack. * The battery pack could be depleted. Try charging the battery pack. * You may not be pressing the lock-off lever and trigger correctly. Make sure to press down and hold the lock-off lever, then depress the trigger to activate the string trimmer.
  • D
    Dr. Sarah Rodriguez MDAug 28, 2025
    What to do if the line on my EGO ST1500 Trimmer is not cutting well?
    • J
      Jesse ClarkAug 28, 2025
      If the line on your EGO Trimmer is not cutting well, the line-cutting blade on the edge of the guard may have become dull. Sharpen the line-cutting blade with a file or replace it with a new blade.
  • M
    Michelle TateAug 31, 2025
    How to fix EGO ST1500 head not advancing line?
    • P
      pmccallAug 31, 2025
      If the trimmer head of your EGO Trimmer won't advance the line, consider the following: * Grass might be binding the motor shaft or trimmer head. Stop the trimmer, remove the battery, and clean the motor shaft and trimmer head. * There might not be enough line on the spool. Remove the battery and replace the cutting line, following the instructions in the “LINE REPLACEMENT” section. * The trimmer head could be dirty. Remove the battery and clean the spool, spool retainer, and spool base. * The line may be tangled on the spool. Remove the battery, remove the line from the spool, and rewind it, following the “LINE REPLACEMENT” section. * The line could be too short. Remove the battery and pull the lines while alternately pressing down on and releasing the bump knob.
  • T
    Tara SmithSep 3, 2025
    What to do if EGO ST1500 line is not cutting well?
    • R
      Rebecca MoralesSep 3, 2025
      If the line on your EGO Trimmer isn't cutting well, the line-cutting blade on the edge of the guard may have become dull. Sharpen the line-cutting blade with a file or replace it with a new blade.
  • P
    paul54Sep 5, 2025
    Why is grass wrapping around the trimmer head and motor housing of my EGO ST1500?
    • A
      acabreraSep 5, 2025
      Grass may wrap around the trimmer head and motor housing of your EGO Trimmer if you are cutting tall grass at ground level. To prevent this, cut tall grass from the top down, removing no more than 8 inches in each pass.
  • B
    Brianna ThomasSep 12, 2025
    Why does grass wrap around the head of my EGO ST1500 Trimmer?
    • S
      Sharon HartSep 12, 2025
      If grass is wrapping around the trimmer head and motor housing of your EGO Trimmer, it's likely due to cutting tall grass at ground level. To prevent this, cut tall grass from the top down, removing no more than 8 inches in each pass.
  • L
    Lisa GriffinNov 18, 2025
    What to do if the trimmer head on my EGO ST1500 Trimmer will not advance line?
    • J
      Joshua BrownNov 18, 2025
      If the trimmer head on your EGO Trimmer won't advance line, consider the following: * The motor shaft or trimmer head could be bound with grass. Stop the trimmer, remove the battery, and clean the motor shaft and trimmer head. * There might not be enough line on the spool. Remove the battery and replace the cutting line, following the instructions in the “LINE REPLACEMENT” section of this manual. * The trimmer head could be dirty. Remove the battery and clean the spool, spool retainer, and spool base. * The line could be tangled on the spool. Remove the battery, remove the line from the spool, and rewind it, following the “LINE REPLACEMENT” section of this manual. * The line might be worn too short. Remove the battery and pull the lines while alternately pressing down on and rel...
  • M
    Mr. Jose BrownNov 24, 2025
    Why does my EGO Trimmer stop while cutting?
    • M
      Misty WagnerNov 24, 2025
      Your EGO Trimmer might stop while cutting for several reasons: * The guard might not be mounted, causing an overly long cutting line and motor overload. * Solution: Remove the battery pack and mount the guard on the trimmer. * You might be using heavy cutting line. * Solution: Use only nylon cutting line with a diameter of 0.095” (2.4mm) or less. * The motor shaft or trimmer head might be bound with grass. * Solution: Stop the trimmer, remove the battery, and clean the motor shaft and trimmer head. * The motor might be overloaded. * Solution: Remove the trimmer head from the grass. The motor will recover as soon as the load is removed. When cutting, move the trimmer head in and out of the grass to be cut and remove no more than 8 inches of length in a ...

Summary

Safety Symbols and Warnings

General Safety Alert Symbol

Indicates DANGER, WARNING, OR CAUTION. May be used with other symbols.

Eye Protection Warning

Emphasizes wearing safety goggles or glasses with side shields for eye safety.

Safety Instructions and Symbols

Safety Alert Symbol

Indicates a potential personal injury hazard.

Operators Manual Reference

Must read operator's manual to reduce the risk of injury.

Eye Protection Requirements

Always wear safety goggles or safety glasses with side shields and a full face shield.

Battery Recycle Symbols

Product uses Li-ion batteries; consult local waste authority for disposal.

Important Safety Precautions

General Safety Precautions

Basic precautions to reduce risk of fire, electric shock, and personal injury.

Pre-Operation Checks and Warnings

Instructions on checking for damaged parts, clearing area, and safe operation.

Usage Restrictions and Compatibility

Restrictions on line types, ladder use, and compatible battery/charger models.

Introduction and Specifications

Introduction to the String Trimmer

Congratulates the user and provides contact information for support.

Product Specifications

Lists technical details: voltage, speed, cutting width, and weight.

Assembly and Unpacking

Assembly Warnings

Warnings regarding damaged parts, modifications, and accidental starting during assembly.

Unpacking Instructions

Steps for removing the product and accessories from the box and inspecting for damage.

Packing List and Shaft Unfolding

Packing List Contents

Lists the specific parts included with the string trimmer.

Unfolding the Shaft (ST1500-S)

Step-by-step guide to unfold the shaft for the ST1500-S model.

Mounting the Guard

Mounting and Adjusting the Front-Assist Handle

String Trimmer Description

Component Descriptions

Adjustable Front-Assist Handle

Provides easy control of the trimmer during cutting.

Rear Handle

Ergonomic handle with overmold for improved comfort and grip.

Trigger and Lock-Off Lever

Controls power and prevents accidental activation.

Foldable Shaft and Joint

Encloses cables and connects foldable shafts (ST1500-S).

Trimmer Head and Bump Knob

Cutting attachment and mechanism to release new line.

Guard and Line Cutting Blade

Safety guard and blade to maintain cutting line length.

Battery Pack Mechanisms

Buttons and latches for battery pack installation and removal.

Operation and Battery Handling

General Operation Warnings

Warnings about carelessness, eye/hearing protection, and accessory use.

Installing and Removing Battery Pack

Step-by-step guide to install and remove the battery pack.

Holding and Operating the Trimmer

Safe Battery Removal

Detailed steps for safely removing the battery pack.

Proper Holding Technique

Proper stance and grip for operating the string trimmer.

Starting and Stopping the String Trimmer

Using the String Trimmer

Pre-Use Safety Checks

Inspect trimmer for damaged/worn parts before operation.

Cleaning the Trimmer After Use

Steps for cleaning the trimmer after use to maintain performance.

Trimming Techniques and Line Management

Tips for Best Trimming Results

Advice on achieving optimal cutting performance and efficiency.

Adjusting Cutting Line Length

How to release more line using the bump knob during operation.

Line Replacement Guidelines

Information on replacing the cutting line and types of line to use.

Cutting Line Spooling and Replacement

Winding New Line onto Spool

Step-by-step guide for winding new cutting line onto the spool.

Installing a Pre-wound Spool

Instructions for installing a pre-wound spool into the trimmer head.

Maintenance and Storage

General Maintenance Warnings

Warnings regarding part replacement, servicing, and cleaning procedures.

Cleaning the Unit

Steps for cleaning the trimmer, including specific warnings.

Sharpening the Line Cutting Blade

Procedure for sharpening the line cutting blade.

Storing the Unit

Guidelines for proper storage of the string trimmer.

Troubleshooting Common Issues

Warranty Policy and Service

EGO Warranty Policy Overview

Details the 5-year power equipment and 3-year battery/charger limited warranty.

Limited Service Warranty Terms

Specifies what is covered and excluded under the warranty terms.

How to Obtain Service

Instructions on how to contact EGO for warranty service.

Additional Warranty Limitations

Legal disclaimers and limitations on implied warranties and damages.

Part List and Identification

EGO ST1500 Specifications

General IconGeneral
Cutting Swath15 inches
Line Diameter0.095 inches
Battery56V Arc Lithium
MotorBrushless
Line FeedBump Feed
ShaftStraight
Power SourceBattery
Battery IncludedNo
Charger IncludedNo (available separately)

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