Toro 51958 User Manual

17 in. String Trimmer - Curved Shaft
Item No. 51958— 319000001 & Up
18 in. String Trimmer - Straight Shaft
Item No. 51978— 319000001 & Up
Item No. 51978A— 319000001 & Up
English (EN), French (FR), and Spanish (ES)
WARNING:
To reduce the risk of injury, the user must read and understand the operator’s manual. Save this manual.
Form No. 3427-359 Rev. A
If you have questions concerning
your trimmer, please call us
at 866-574-9242 (US) or
866-574-9243 (Canada).
NOTICE
Do not use E15, E20 or E85 fuel in this
product. It is a violation of federal law
and will damage the unit and void your
warranty. Only use unleaded gasoline
containing up to 10% ethanol.

Toro 51958 Specifications

General

Type	String Trimmer
Power Source	Gas
Adjustable Handle	Yes
Line Feed	Bump Feed
Engine Type	2-Cycle
Fuel Tank Capacity	14 oz
Shaft Type	Curved
Line Diameter	0.095 in
Handle Type	Loop
Warranty	2 years

Summary

Important Information Before Use

Fueling Procedures and Safety

Details on safe fueling with gasoline and 2-cycle lubricant, including warnings.

Starting and Flooded Engine Guidance

Instructions for starting the trimmer in different conditions and addressing flooded engine issues.

Introduction to Your Toro Trimmer

Product Identification and Manual Guidance

Instructions on identifying product numbers and the importance of reading the operator's manual.

Understanding Hazard Signal Words

Explanation of signal words like DANGER, WARNING, CAUTION, and NOTICE used in the manual.

Safety Rules and Precautions

General Operational Safety

Essential safety guidelines covering personal protection, environment, and machine operation.

Specific Trimmer Safety Rules

Specific safety instructions for trimmer use, including inspection, guards, and handling.

Understanding Symbols and Warnings

Hazard Signal Word Definitions

Definitions of signal words DANGER, WARNING, CAUTION, and NOTICE used in the manual.

Product Safety Symbols Explained

Explanation of various product safety symbols and their meanings for safe operation.

Product Labels and Identification

Key Operational and Safety Labels

Visual guide to important product labels, including starting instructions and warnings.

Product Features and Specifications

Detailed Product Specifications

Specifications for engine, cutting width, and line size of the trimmer models.

Know Your Product

Component Identification and Design Features

Overview of engine, grass deflector, shield, ergonomic design, and key parts of both trimmer types.

Assembly and Setup

Unpacking and Parts Check

Instructions for unpacking, inspecting for damage, and verifying all components are present.

Connecting Trimmer Attachments

Step-by-step guide to connect and disconnect various attachments to the trimmer's upper shaft.

Attaching Key Components

Instructions for attaching the front handle and grass deflector for both trimmer types.

Trimmer Operation

Product Applications and Fueling

Details on trimmer applications, fuel types, mixture ratios, and safe refueling procedures.

Starting and Stopping Procedures

Step-by-step instructions for starting a cold or warm engine and safely stopping the trimmer.

Trimmer Handling and Cutting Techniques

Guidance on proper operating positions and cutting motions for both curved and straight shaft trimmers.

Cutting Line Management and Tips

Instructions on advancing cutting line and essential tips for effective and safe trimming.

Maintenance and Component Installation

General Cleaning and Servicing

Procedures for cleaning the trimmer exterior, checking fuel system, and general upkeep.

Air Filter Cleaning

Step-by-step instructions for cleaning the air filter assembly, including component removal and reinstallation.

Replacing Spark Arrestor and Plug

Detailed steps for replacing the spark arrestor and spark plug, including warnings and torque specifications.

Idle Speed Adjustment and Storage

Procedure for adjusting idle speed, and guidelines for short-term and long-term product storage.

Installing Easy-Load String Head

Step-by-step instructions for installing cutting line into the Easy-Load string head.

Engine and Maintenance Considerations

High Altitude Engine Operation

Information on reconfiguring the engine for operation above 2000 feet altitude to prevent damage.

Maintenance Schedule Overview

Chart detailing maintenance tasks, intervals for inspecting, cleaning, or replacing parts.

Troubleshooting Common Issues

Engine and Fueling Problems

Solutions for engine starting issues, smoke, and fuel/lubricant mixture problems.

Line and Operational Issues

Troubleshooting steps for line advancement, grass wrapping, and lubricant drips from the muffler.

Warranty Information

Obtaining Warranty Service

Instructions for obtaining warranty service, including contact information and required procedures.

Regulatory Information

California Proposition 65 Warning

Explanation of California's Proposition 65 warning requirements and why Toro provides it.

Customer Service and Contact

Service Dealer Information

Contact details for locating the nearest service dealer for product maintenance and repairs.