Toro 51940 - User Manual

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Form No. 3329-634

TrimmedBrushcutter

Model No. 51930--230000001 & Up

Model No. 51932-230000001 & Up

Model No. 51934--230000001 & Up

Model No. 51930A--230000001 & Up

Model No. 51932A--230000001 & Up

Model No. 51934A--230000001 & Up

Model No. 51936--230000001 & Up

Model No. 51938--230000001 & Up

Model No. 51940--230000001 & Up

Operator's Manual

........................!

English (E.N), Fre*lch (F), and Spanish (ES)

Table of Contents

Questions and Answers

K
Keith BrownAug 6, 2025
Why won't my Toro 51940 engine start?
- C
  Charles TuckerAug 6, 2025
  If your Toro Brush Cutter engine won't start, first, ensure the switch is in the I (ON) position. If it still doesn't start, check for a spark by removing the spark plug, reattaching the cap, and laying it on the metal cylinder while pulling the starter cord. If there's no spark, try a new spark plug. Also, make sure the primer bulb fills with fuel when pushed. If it does not, the fuel delivery system may be blocked. If the bulb fills, the engine may be flooded. If the starter cord pulls harder than when new, contact an authorized service dealer.
C
Cody BennettAug 11, 2025
Why does my Toro Brush Cutter engine emit excessive smoke and not reach full speed?
- A
  antoniocruzAug 11, 2025
  If your Toro Brush Cutter engine doesn't reach full speed and emits excessive smoke, ensure you are using fresh fuel and the correct 2-cycle oil mix. Also, check and clean the air filter and the spark arrestor screen.
K
Karen MartinezAug 15, 2025
What to do if the line will not advance when using automatic line lengthening on my Toro Brush Cutter?
- D
  Derek StevensAug 16, 2025
  If the line won't advance when using the automatic line lengthening feature on your Toro Brush Cutter, try lubricating the line with silicone spray if it's welded to itself. If there's not enough line, install more. You can also pull the line while pressing down on and releasing the retaining cap if the line is worn too short. If the line is tangled, remove it and rewind it. Finally, make sure the engine is at full throttle when advancing the line.
M
molsonAug 20, 2025
Why is oil dripping from the muffler of my Toro 51940?
- N
  nicoleclarkAug 20, 2025
  If oil drips from the muffler of your Toro Brush Cutter, try operating the product at full throttle. Also, ensure you are using fresh fuel and the correct 2-cycle oil mix, and check and clean the air filter.
J
jason01Aug 27, 2025
How to prevent grass from wrapping around the trimmer head of my Toro 51940 Brush Cutter?
- R
  Ryan SpencerAug 27, 2025
  To address grass wrapping around the trimmer head assembly and attachment shaft of your Toro Brush Cutter, cut tall grass from the top down and operate the product at full throttle.
H
heather42Aug 31, 2025
What to do if the retaining cap is hard to turn on my Toro 51940 Brush Cutter?
- H
  Holly MooreAug 31, 2025
  If the retaining cap is hard to turn when using the automatic line lengthening feature on your Toro Brush Cutter, clean the threads and lubricate them with grease. If that doesn't solve the problem, replace the retaining cap.

Summary

Introduction

Signal Word Explanations

Explains hazard signal words like DANGER, WARNING, CAUTION, Important, and Note.

Safety Rules

Operator Safety and Preparation

Covers operator condition, attire, protective gear, stance, and pre-use checks.

Safe Operation and Fueling

Details safe practices for operation, fueling, work area, and stopping.

Symbols

Safety and Hazard Symbols

Explains critical safety alerts, hazard warnings, and protective measure symbols.

Operational Symbols

Covers symbols related to manual reference and fuel/oil mixing.

Product Labels

Specifications and Applications

Technical Specifications

Details engine, cutting width, weight, and line size for product models.

Product Usage Guidelines

Lists the intended applications for the trimmer and brushcutter.

Features

Common and Model-Specific Features

Describes common features and those specific to trimmer and brushcutter models.

Unpacking and Packing List

Unpacking Instructions

Guidance on how to carefully remove and inspect the product from its packaging.

Included Components

Lists all parts included in the product's packaging for verification.

Assembly Procedures

Attaching and Detaching Components

Steps for connecting shafts, handles, and straps to the main unit.

Attaching Grass Deflector

Instructions for fitting the grass deflector to different trimmer shaft types.

Converting Between Trimmer and Brushcutter

Procedures for reconfiguring the unit for different cutting tasks.

Operation Guide

Fueling and Starting the Engine

Details on fuel mixing, tank filling, and engine starting procedures.

Stopping the Product Safely

Steps for safely shutting down the engine and the product.

Using the Trimmer and Brushcutter

Instructions on operating the product for trimming and brushcutting tasks.

Maintenance and Care

Maintenance Schedule and Cleaning

Overview of maintenance tasks, schedules, and cleaning guidelines.

Replacing Consumables

Procedures for replacing cutting line, spool, and spark plug.

Filter and Arrester Servicing

Steps for maintaining the air filter, spark arrester, and checking the fuel cap.

Storage and Transportation

Guidelines for storing the product long/short term and safe transport.

Troubleshooting Common Issues

Warranty Information

Obtaining Warranty Service and Coverage

Procedures for warranty claims, covered parts, and exclusions.

Emission Control Warranty Details

Specifics on the warranty for the engine's emission control system.

Customer Service Contact

Toro 51940 Specifications

General

Brand	Toro
Model	51940
Category	Brush Cutter
Language	English

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