Toro 51938 - 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

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

Table of Contents

Questions and Answers:

P
Phillip JohnsonAug 6, 2025
Why won't my Toro 51938 Brush Cutter engine start?
- K
  Kaitlyn SmithAug 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.
M
melissa27Aug 11, 2025
Why does my Toro Brush Cutter engine emit excessive smoke and not reach full speed?
- S
  Susan GarciaAug 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.
A
Andrea RamseyAug 16, 2025
What to do if the line will not advance when using automatic line lengthening on my Toro Brush Cutter?
- M
  Molly KelleyAug 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.
A
alexandrashepardAug 21, 2025
Why is oil dripping from the muffler of my Toro 51938?
- G
  ginavaughnAug 21, 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.
D
Dawn HollowayAug 26, 2025
How to prevent grass from wrapping around the trimmer head of my Toro 51938 Brush Cutter?
- J
  Jordan Reed DDSAug 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.
K
kimberlyperezAug 31, 2025
What to do if the retaining cap is hard to turn on my Toro Brush Cutter?
- A
  Autumn MartinAug 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.

Toro 51938 Specifications

General

Engine Type	2-Cycle
Cutting Width	17 inches
Weight	14 lbs
Power Source	Gasoline
Shaft Type	Straight
Line Diameter	0.095 inches
Fuel Tank Capacity	14 oz
Handle Type	Loop

Summary

Introduction

Safety Rules

Symbols

Product Labels

Specifications

Features

Common Features

Describes general features applicable to all models of the product.

Brushcutter Features

Highlights specific features of the brushcutter model.

Unpacking

Packing List

Lists all items included in the product packaging.

Assembly

Connecting the Attachment to the Upper Shaft

Step-by-step guide on how to attach components to the main shaft.

Removing the Attachment from the Upper Shaft

Instructions for detaching components from the main shaft.

Attaching the Front Handle

How to install the front handle for better control.

Attaching the Shoulder Strap

Guide for attaching the shoulder strap for support.

Attaching the Grass Deflector

Steps to install the grass deflector for safety.

Converting from Brushcutter to Trimmer

Procedure to convert the unit from brushcutter to trimmer mode.

Converting from Trimmer to Brushcutter

Procedure to convert the unit from trimmer to brushcutter mode.

Operation

Mixing the Fuel

Instructions for properly mixing gasoline and oil for the engine.

Filling the Tank

Safe procedures for refueling the product's fuel tank.

Starting the Product

Detailed steps for starting the trimmer/brushcutter engine.

Stopping the Product

How to safely shut off the product's engine.

Operating the Trimmer

Guidance on how to use the trimmer attachment effectively.

Operating the Brushcutter

Guidance on how to use the brushcutter attachment effectively.

Maintenance

Cleaning the Product

Steps for cleaning the exterior and specific parts of the product.

Servicing the Product

General advice on checking and maintaining the product's components.

Replacing the Cutting Line

Instructions for replacing the trimmer line when it's used up.

Replacing the Spool

Steps for replacing the spool that holds the cutting line.

Checking the Fuel Cap

How to inspect the fuel cap for proper function and leaks.

Cleaning the Air Filter

Procedure for cleaning the air filter to ensure optimal engine performance.

Cleaning the Spark Arrester

Steps to clean the spark arrester for emission control.

Replacing the Spark Plug

Guide on how to replace the spark plug for engine ignition.

Storing the Product

Instructions for storing the product for short and long term use.

Transporting the Product

Safe methods for transporting the product.

Troubleshooting

Warranty

Emission Control Warranty Statement

Details the specific warranty for emission control systems.

Customer Service Information

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