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Bad Boy ST80B120A16 - User Manual

Bad Boy ST80B120A16
32 pages
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088-7505-00
PART NO. / N.º PIEZA
088-7560-00
MODEL NO. / N.º MODELO
ST80B120A16
ST80B000A16
badboymowers.com
EN OPERATOR MANUALSTRING TRIMMER
ES MANUAL DEL OPERADORCORTABORDES

Table of Contents

Questions and Answers

  • E
    Elizabeth WilliamsAug 5, 2025
    What to do if my Bad Boy ST80B120A16 doesn't start when I push the trigger?
    • K
      Kimberly WeberAug 5, 2025
      If your Bad Boy Trimmer doesn't start, there might be a few reasons. First, check the electrical contact between the machine and the battery pack by removing and reinstalling the battery. Next, ensure the battery pack is charged. Finally, make sure you're pulling the lock-out button rearward and the trigger simultaneously to start the machine.
  • J
    Jennifer BurnettAug 10, 2025
    Why does my Bad Boy ST80B120A16 stop while I'm cutting?
    • S
      Summer PenaAug 10, 2025
      Your Bad Boy Trimmer might stop for several reasons: 1. The guard may not be attached properly, so remove the battery pack and attach the guard. 2. You might be using a heavy cutting line; use only a 0.095" (2.4 mm) diameter nylon cutting line. 3. Grass may be wound around the motor shaft or trimmer head; stop the machine, remove the battery pack, and clear any grass. 4. The motor could be overloaded; remove the trimmer head from the grass, and it should recover. When cutting, move the trimmer head in and out, removing no more than 20 cm in a pass. 5. The battery pack or machine might be too hot; cool them down until normal function returns. 6. The battery pack might be disconnected; reinstall it. 7. The battery pack may be depleted; in this case, charge it.
  • D
    Dr. Adam JohnsonAug 15, 2025
    Why does the line keep breaking on my Bad Boy Trimmer?
    • K
      Kimberly JohnsonAug 15, 2025
      The line on your Bad Boy Trimmer might be breaking because the machine is being used incorrectly. Cut with the tip of the line, avoiding stones, walls, and other hard objects. Also, advance the cutting line regularly to maintain a full cutting width.
  • Y
    youngjessicaAug 20, 2025
    How to fix a Bad Boy Trimmer when the line does not extend?
    • A
      austinsalazarAug 20, 2025
      If the line on your Bad Boy Trimmer isn't extending, it could be due to a few reasons. The lines might be welded together, in which case you should lubricate them with silicone spray. Alternatively, there might not be enough line on the spool, so install more line. If the lines are worn and too short, try extending them. Finally, the lines might be tangled on the spool; remove them and wind them properly.
  • T
    taylorgregoryAug 26, 2025
    What to do if grass winds around the trimmer head of my Bad Boy Trimmer?
    • C
      Carl ColemanAug 26, 2025
      If grass is winding around the trimmer head and motor housing of your Bad Boy Trimmer, it's likely because you're cutting tall grass at ground level. Cut tall grass from the top down, removing no more than 20 cm in each pass to prevent wrapping.
  • M
    Melissa LawrenceAug 30, 2025
    Why is the vibration obviously increasing on my Bad Boy Trimmer?
    • A
      Austin WoodAug 30, 2025
      If the vibration is noticeably increasing on your Bad Boy Trimmer, it could be because the line is worn down on one side and hasn't been extended in time. Make sure the line on both sides is equal and extend the line.

Summary

Description

Purpose

Explains the intended use of the string trimmer for cutting grass and weeds.

Overview

Provides a general layout of the string trimmer's components and parts.

Important Safety Instructions

Symbols on the Product

Risk Levels

Service

Environmentally Safe Battery Disposal

Proposition 65

Installation

Unpack the Machine

Instructions for safely unpacking the string trimmer and its components from the packaging.

Attach the Guard

Steps for securely attaching the protective guard to the trimmer head for safe operation.

Assemble the Shaft

Guide on how to connect and secure the upper and lower shaft sections of the trimmer.

Installation

Attach the Auxiliary Handle

Procedure for mounting and positioning the auxiliary handle for better control and comfort.

Install the Battery Pack

Steps for correctly inserting the battery pack into the trimmer for power supply.

Remove the Battery Pack

Instructions on how to safely detach the battery pack from the trimmer.

Operation

On;Off Button

Details on using the power button to turn the machine on and off, and indicator lights.

Speed Indication

Explanation of the indicator lights that show the selected speed setting (high or low).

Start the Machine

Step-by-step guide on how to safely start the string trimmer for operation.

Stop the Machine

Instructions on how to properly shut down the string trimmer by releasing the trigger.

Operation Tips

Advice for effective and safe use of the trimmer, including posture and cutting techniques.

Operation

Adjust the Length of the Cutting Line

How to automatically feed and trim the cutting line to maintain optimal length during use.

Cutting Tips

Techniques for efficient grass cutting, including tilting the machine and using the line tip.

Line Cut-off Blade

Information about the blade on the guard that trims the cutting line to a consistent diameter.

Adjust the Cutting Diameter

Instructions on changing the cutting width from 16 inches to 14 inches for different needs.

Maintenance

General Information

Important notes and precautions before performing any maintenance tasks on the machine.

Clean the Machine

Guidelines for cleaning the trimmer after use, including recommended cleaning agents.

Remove the Remaining Line

Steps to remove the cutting line spool and the line from the trimmer head assembly.

Maintenance

Install the Cutting Line

Detailed procedure for loading new cutting line onto the spool and through the trimmer head.

Remove the Trimmer Head

Instructions on how to detach the trimmer head from the shaft for maintenance or replacement.

Assemble the Trimmer Head

Steps for reassembling the trimmer head after maintenance, ensuring proper installation.

Transportation and Storage

Transportation and Storage

Store the Machine

Recommendations for proper storage of the trimmer, including battery removal and location.

Troubleshooting

Technical Data

Limited Warranty

Exploded View

Bad Boy ST80B120A16 Specifications

General IconGeneral
BrandBad Boy
ModelST80B120A16
CategoryTrimmer
LanguageEnglish

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