Toro 51955 User Manual

17 in. String Trimmer - Curved Shaft
Model No. 51955—311000001 & Up
18 in. String Trimmer - Straight Shaft
Model No. 51975—311000001 & 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. 3369-612 Rev. A
If you have questions concerning
your trimmer, please call us
at 1-866-574-9242 (US) or
1-866-574-9243 (Canada).

Toro 51955 Specifications

General

Type	String Trimmer
Power Source	Gas
Motor	2-Cycle
Line Diameter	0.095 inches
Adjustable Handle	Yes
Engine Type	2-Cycle
Cutting System	Bump Feed
Shaft Type	Straight
Fuel Tank Capacity	14 oz
Warranty	2 years limited
Features	Straight Shaft

Summary

Introduction

General Safety Rules

Read All Instructions

Read and understand all instructions before using this product to ensure safe operation and avoid serious injury.

Specific Safety Rules

Specific Safety Rules For Trimmer Use

Rules specific to the safe operation of the string trimmer, including inspection, attachment, and usage guidelines.

Symbols

Product Labels

Features

Product Specifications

Details about the engine, cutting width, line size, and weight of the string trimmer models.

Assembly

Unpacking

Instructions for carefully removing the product and accessories from the box and checking for damage or missing parts.

Connecting the Attachment to the Upper Shaft

Steps to connect the trimmer attachment to the upper shaft, including tightening the knob securely.

Attaching the Front Handle

Detailed instructions for attaching the front handle to the upper shaft for proper operation.

Attaching the Grass Deflector

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

Operation

Applications

Describes the intended uses of the trimmer, such as cutting grass, weeds, and edging sidewalks.

Fueling and Refueling the Trimmer

Guidelines for safely fueling and refueling the trimmer with the correct gasoline and oil mixture.

Oxygenated Fuels

Information regarding the use of oxygenated fuels like E10 and a warning against using E85.

Starting the Product

Step-by-step instructions for starting the trimmer engine, differentiating between cold and warm starts.

Stopping the Product

Procedure for safely stopping the trimmer by releasing the throttle trigger and using the on/stop switch.

Operating the Trimmer

Guidance on how to properly operate both curved and straight shaft trimmers, including posture and cutting motion.

To Advance the Cutting Line

Instructions on how to advance the cutting line, either by tapping the head or manually.

Cutting Tips

Advice on effective trimming techniques, avoiding hazards, and maintaining the cutting line.

Installing Line in Reel-Easy™ String Head

Step-by-step guide for installing monofilament line into the Reel-Easy string head for optimal performance.

Maintenance

Cleaning the Product

Instructions for cleaning the exterior, spool area, and air intake vents of the trimmer.

Servicing the Product

Guidance on checking and tightening fasteners, and replacing any damaged or lost parts.

Checking the Fuel Cap

Procedure for checking the fuel cap for leaks and potential clogging of its filter or check valve.

Cleaning the Air Filter

Detailed steps for removing, cleaning, and reinstalling the air filter for proper engine function.

Replacing the Spark Arrestor

Steps to remove, replace, and reassemble the spark arrestor, including necessary tools and torque values.

Replacing the Spark Plug

Instructions for replacing the Champion RCJ4 spark plug, including torque specifications and caution notes.

Idle Speed Adjustment

Procedure for adjusting the idle speed screw to prevent the cutting attachment from turning at idle.

Storing the Product

Guidelines for storing the trimmer short-term and long-term, including fuel draining and cleaning.

Transporting the Product

Steps for safely transporting the trimmer, including draining fuel and securing it in a vehicle.

Installing Reel-Easy™ String Head

Detailed instructions for opening, disassembling, and reassembling the Reel-Easy string head.

Emissions Maintenance Schedule

High Altitude Engine Operation

EMISSIONS MAINTENANCE SCHEDULE AND WARRANTED PARTS LIST

Troubleshooting

Engine will not start

Diagnosing and resolving issues when the engine fails to start, covering no spark, no fuel, or flooding.

Engine does not reach full speed and emits excessive smoke

Troubleshooting engine performance issues like low speed and excessive smoke from the muffler.

Line will not advance when using automatic line lengthening

Solutions for when the cutting line fails to advance automatically, including lubrication and spooling issues.

Grass wraps around the trimmer head assembly and the attachment shaft

Addressing grass wrapping around the trimmer head and attachment shaft, related to cutting technique.

Oil drips from muffler

Troubleshooting oil drips from the muffler, related to fuel mixture, air filter, or engine speed.

Warranty

Instructions for Obtaining Warranty Service

Steps and contact information for locating service dealers and obtaining warranty repairs for the product.

Federal and California Emission Control Systems Warranty

Detailed warranty statement for federal and California emission control systems on non-road and small off-road engines.

Owner's Warranty Responsibilities and Requirements

Outlines owner's responsibilities, including maintenance, and requirements for warranty coverage.

Emissions Parts List

A list of emission-related parts that are covered under the emissions control system warranty.