GreenWorks STF310 - User Manual

Questions and Answers

J
John MeyerAug 3, 2025
How to fix the line if it does not advance on my GreenWorks STF310 Trimmer?
- K
  Kimberly PhillipsAug 3, 2025
  If the line on your GreenWorks Trimmer isn't advancing, several factors could be at play. 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. If the lines are worn too short, try advancing the cutting line. Lastly, the lines could be tangled on the spool; remove them and rewind them properly.
T
Tara AlexanderAug 7, 2025
What to do if grass winds around the trimmer head of GreenWorks STF310 Trimmer?
- T
  Travis AguilarAug 7, 2025
  If grass is winding around the trimmer head and motor housing of your GreenWorks Trimmer, it may be because you are cutting tall grass at ground level. Cut tall grass from the top down, removing no more than 8" in each pass to prevent wrapping.
H
Hannah RamosAug 12, 2025
How to improve cutting if the line does not cut well on my GreenWorks STF310 Trimmer?
- D
  David SandersAug 12, 2025
  If the line on your GreenWorks Trimmer isn't cutting well, the cut-off blade might be dull. Sharpen the cut-off blade with a file or replace it.
M
Martha RobertsAug 15, 2025
Why is my GreenWorks Trimmer not starting?
- L
  lwestAug 16, 2025
  If your GreenWorks Trimmer doesn't start when you push the trigger, there might be a few reasons. First, ensure there's good electrical contact between the battery and the machine by removing and reinstalling the battery pack. Secondly, the battery pack could be depleted, so try charging it. Finally, make sure you're pressing the lock-out button and trigger simultaneously; pull and hold the lock-out button, then pull the trigger.
F
Frances ThompsonAug 20, 2025
What to do if my GreenWorks STF310 stops while cutting?
- C
  christopherphillipsAug 20, 2025
  Your GreenWorks Trimmer might stop during cutting due to several reasons. Ensure the guard is properly attached to the machine after removing the battery pack. Also, check that you're using the correct nylon cutting line with a 0.08" (2 mm) diameter. If the grass winds around the motor shaft or trimmer head, stop the machine, remove the battery pack, and clear the grass. If the motor is overloaded, remove the trimmer head from the grass, and it should recover. When cutting, move the trimmer head in and out of the grass, removing no more than 8" in a pass. Additionally, the battery pack or machine might be too hot; allow them to cool down. Confirm that the battery pack is correctly installed. Finally, the battery pack could be depleted, so try charging it.
M
Michael MartinezAug 25, 2025
Why does the line keep breaking on my GreenWorks Trimmer?
- D
  Diana WoodsAug 25, 2025
  If the line on your GreenWorks Trimmer keeps breaking, it might be due to incorrect usage. 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.
M
Melinda BergAug 29, 2025
Why does my GreenWorks STF310 Trimmer vibrate so much?
- B
  bchristianAug 29, 2025
  If the vibration of your GreenWorks Trimmer increases noticeably, it could be because the line is worn down on one side and hasn't been advanced in time. Ensure the line on both sides is normal and advance the line.

Summary

Product Description and Overview

Purpose of the String Trimmer

Defines the intended use of the string trimmer.

String Trimmer Parts Overview

Identifies the main parts of the string trimmer.

Important Safety Instructions

Machine Symbols and Risk Levels

Symbols on the Machine

Explains the meaning of various symbols found on the equipment.

Understanding Risk Levels

Clarifies the meaning of signal words indicating hazard severity.

Service and Disposal Information

Service and Repair Information

Information on authorized service and repair.

Environmentally Safe Battery Disposal

Guidelines for proper disposal of Lithium-Ion batteries.

Proposition 65 Warning

Warning about potential exposure to hazardous chemicals.

Installation Guide

Unpack the Machine

Steps for unpacking the string trimmer and its components.

Attach the Edge Guide

How to attach and use the edge guide.

Attach the Guard

Instructions for attaching the safety guard.

Assemble the Shaft

Steps to connect the upper and lower shaft sections.

Attach the Auxiliary Handle

How to attach the secondary handle for better control.

Install the Battery Pack

Procedure for inserting the battery pack into the machine.

Remove the Battery Pack

Procedure for removing the battery pack from the machine.

Operating the String Trimmer

Start the Machine

How to start the string trimmer using the controls.

Stop the Machine

How to stop the string trimmer.

Operation Tips

Tips for efficient and safe operation of the string trimmer.

Cutting Tips

Techniques for effective grass cutting and debris management.

Adjust Cutting Line Length

How to adjust the cutting line length as it wears.

Adjust Cutting Diameter

How to change the cutting path diameter.

Maintenance Procedures

General Maintenance Information

General information about maintenance and service.

Clean the Machine

Steps for cleaning the trimmer after use.

Replace the Spool

Procedure to replace the spool with new cutting line.

Replace the Cutting Line

Instructions on how to replace the cutting line on the spool.

Replace the Bump Knob

Procedure for replacing the bump knob on the spool housing.

Transportation and Storage

Move the Machine

Steps to take when moving the machine.

Store the Machine

Instructions for proper storage of the string trimmer.

Troubleshooting Guide

Technical Data and Warranty

Technical Data

Specifications and technical details of the string trimmer.

Limited Warranty Information

Information about the product's warranty coverage and limitations.

Exploded View Diagram

GreenWorks STF310 Specifications

General

Type	String Trimmer
Power Source	Battery
Weight	6.4 lbs
Adjustable Handle	Yes
Battery Included	Yes
Charger Included	Yes
Cutting Width	12 inches
Line Diameter	0.065 in
Cutting Swath	12 inches