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Toro 51958-314000001 - User Manual

Toro 51958-314000001
80 pages
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17 in. String Trimmer - Curved Shaft
Model No. 51958—314000001 & Up
18 in. String Trimmer - Straight Shaft
Model No. 51978—314000001 & Up
English (EN), French (FR), and Spanish (ES)
WARNING:
To reduce the risk of injury, the user must read and understand the operators manual. Save this manual.
Form No. 3378-721 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 (or fuel
containing greater than 10% ethanol) in
this product. It is a violation of federal law
and will damage the unit and void your
warranty.

Table of Contents

Questions and Answers

  • D
    Danny AliAug 7, 2025
    How to fix Toro 51958-314000001 line that will not advance when using automatic line lengthening?
    • A
      Anne GonzalezAug 7, 2025
      If the line on your Toro Trimmer isn't advancing automatically, here are some potential causes and solutions: * **Line welded to itself:** Lubricate with silicone spray. * **Not enough line on the spool:** Install more line. * **Line worn too short:** Pull the line while alternately pressing down on and releasing the retaining cap. * **Line tangled on spool:** Remove the line from the spool and re-wind it. * **Engine speed too slow:** Advance the line at full throttle.
  • E
    Elijah HowellAug 13, 2025
    What to do if grass wraps around the trimmer head assembly and the attachment shaft of Toro Trimmer?
    • E
      Elizabeth JohnstonAug 13, 2025
      If grass wraps around the trimmer head assembly and the attachment shaft of your Toro Trimmer: * Cutting tall grass at ground level: Cut tall grass from the top down. * Operating the product at part throttle: Operate the product at full throttle.
  • K
    Kelly PhamAug 27, 2025
    Why does oil drip from the muffler of my Toro Trimmer?
    • L
      Lee WilsonAug 27, 2025
      Oil may drip from the muffler of your Toro Trimmer due to: * Operating the product at part throttle: Operate the product at full throttle. * Incorrect oil/fuel mixture: Use fresh fuel and the correct 2-cycle oil mix. * Dirty air filter: Clean the air filter.
  • E
    Elizabeth RamirezSep 10, 2025
    What to do if Toro Trimmer engine does not reach full speed and emits excessive smoke?
    • C
      Cameron PerezSep 12, 2025
      If your Toro Trimmer engine doesn't reach full speed and emits excessive smoke, consider the following: 1. **Check the oil fuel mixture:** Use fresh fuel and the correct 2-cycle oil mix. 2. **Air filter:** Clean the air filter. 3. **Spark arrestor screen:** Clean the spark arrestor.
  • D
    Dwayne RodriguezNov 1, 2025
    Why Toro 51958-314000001 Trimmer engine will not start?
    • M
      Michelle SanchezNov 1, 2025
      There are several reasons why your Toro Trimmer engine might not start: * **No spark:** Remove the spark plug, reattach the cap, and lay it on the metal cylinder. Pull the starter cord to check for a spark. If there's no spark, try again with a new spark plug. * **No fuel:** Push the primer bulb until it's full. If it doesn't fill, the fuel delivery system may be blocked. If it does fill, the engine might be flooded. * **Flooded engine:** Remove the spark plug and turn the product so that the spark plug hole is aimed at the ground. Ensure the choke lever is set to RUN and pull the starter cord 10 to 14 times to clear excess fuel. Clean and reinstall the spark plug. With the trigger fully depressed, pull the starter cord 3 times. If it doesn't start, set the choke lever to FULL and f...

Summary

Important Pre-Use Information

Fueling and Starting Procedures

Instructions for safely fueling the trimmer, starting cold/warm engines, and troubleshooting flooded engines.

Introduction

General Safety Rules

Specific Safety Rules

Symbols

Product Labels

Features

Product Specifications

Details on engine size, cutting width, line size, and weight for different trimmer models.

Product Overview

Product Components and Design

Description of engine, grass deflector, grass shield, and ergonomic design features of the trimmer.

Assembly

Unpacking and Packing List

Steps for unpacking the product and verifying all items are included in the packing list.

Assembly

Connecting and Removing Attachments

Procedures for attaching and detaching the trimmer attachment to the power head.

Attaching the Front Handle

Steps for securely attaching the front handle to the trimmer assembly.

Assembly

Attaching the Grass Deflector

Instructions for attaching the grass deflector to both curved and straight shaft trimmers.

Operation

Applications and Fueling

Recommended uses for the trimmer and detailed instructions for fueling and refueling.

Oxygenated Fuels

Important notice regarding the use of fuels containing ethanol (E15, E20, E85).

Operation

Starting and Stopping the Engine

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

Operating the Trimmer

Trimming Techniques

Proper operating positions and techniques for curved and straight shaft trimmers.

Operation

Cutting Line Management

Instructions on advancing the cutting line and tips for effective cutting.

Maintenance

Installing Cutting Line

Procedure for installing monofilament line into the REEL-EASY™ String Head.

Maintenance

Cleaning and Servicing Product

Guidance on cleaning the product exterior, air filter, and checking fuel components.

Maintenance

Replacing Spark Arrestor and Plug

Steps for replacing the spark arrestor and spark plug for optimal engine performance.

Maintenance

Idle Speed, Storage, and Transport

Adjusting idle speed, and procedures for storing and transporting the trimmer.

Maintenance

REEL-EASY String Head Installation

Detailed steps for installing the REEL-EASY™ string head assembly.

Maintenance

Engine Operation and Maintenance Schedule

Information on high altitude operation and the product's maintenance schedule.

Troubleshooting

Engine Starting and Performance Issues

Solutions for common problems like engine not starting, excessive smoke, and poor speed.

Line and Trimmer Head Issues

Troubleshooting for line advancement, grass wrapping, and muffler oil drips.

Warranty Information

Customer Service Information

Toro 51958-314000001 Specifications

General IconGeneral
BrandToro
Model51958-314000001
CategoryTrimmer
LanguageEnglish

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