Ryobi 780r manual Introduction, Table of Contents

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INTRODUCTION

THANK YOU

Thank you for buying this quality product. This modern outdoor power tool will provide many hours of useful service. You will find it to be a great labor-saving device. This operator’s manual provides you with easy-to-understand operating instructions. Read the whole manual and follow all the instructions to keep your new outdoor power tool in top operating condition. The other manual that came with your power tool, the parts manual, contains all the information that you need to order parts.

PRODUCT REFERENCES,

ILLUSTRATIONS AND

SPECIFICATIONS

All information, illustrations and specifications in this manual are based on the latest product information available at the time of printing. We reserve the right to make changes at any time without notice.

Copyright© 1998 Ryobi Outdoor Products, Inc. All Rights Reserved.

Click-Link® is a registered trademark of Ryobi Outdoor Products.

Bump Head™ is a trademark of Ryobi Outdoor Products.

SERVICE INFORMATION

Service on this unit both within and after the warranty period should be performed only by an authorized and approved service dealer.

Dial:

1-800-345-8746in the United States or 1-800-265-6778in Canada

to obtain the listing of the authorized service dealer nearest you.

DO NOT RETURN THE UNIT TO THE RETAILER.

NOTE: PROOF OF PURCHASE WILL BE

REQUIRED FOR WARRANTY SERVICE.

Make sure this manual is carefully read and understood before starting or operating this equipment.

THIS PRODUCT IS COVERED BY ONE OR MORE OF THE US PATENTS LISTED BELOW: 5,076,149; 4,901,682; 4,779,405; 4,651,422; 4,505,040; 4,463,498; 4,369,742; 4,342,236; 4,223,441; 2,125,688; D-249,012; D-239,329;

OTHER PATENTS PENDING.

TABLE OF CONTENTS

I.

California Emission Regulations . . .

.

. . . . 3

II.

Rules for Safe Operation

. . 4-9

 

A. Important Safety Information . . .

.

. . .4-6

 

B. Safety and International Symbols

 

. . .7-8

 

C. Know Your Unit

. . . .9

III.

Assembly Instructions

10-14

 

A. Installing and Adjusting J-Handle

.

. . .10

 

B. Installing the Harness

. . .11

 

C. Removing and Installing Cutting

. . . . . .

 

Attachment Shield

.

. . . 11

 

D. Remove the Cutting Attachment and . . .

 

Install the Cutting Blade

.

.12-13

 

E. Remove the Cutting Blade and

 

Install the Cutting Attachment . .

. .

. . .14

IV.

Oil and Fuel Information

.

. . . 15

V.

Starting/Stopping Instructions . . . .

.

. . . 16

VI.

Operating Instructions

17-20

 

A. Operating Click-Link System (790r)

. . .17

 

B. Holding the Trimmer

. . .18

 

C. Adjusting Trimming Line Length

. . . . .18

 

D. Tips for Best Trimming Results .

. .

. . .19

 

E. Decorative Trimming

. . .19

 

F. Cutting Blade Operating Tips . . .

.

.19-20

VII. Maintenance and Repair Instructions .20-26

 

A. Maintenance Schedule

.

. . . 20

 

B. Line Installation

21-22

 

C. Installing a Prewound Reel

.

. . . 23

 

D. Air Filter Maintenance

23-24

 

E. Air Filter/Muffler Cover Removal

. . . .23

 

F. Cleaning the Air Filter

.

. . . 24

 

G. Reinstalling the Air Filter/Muffler Cover 24

 

H. Carburetor Adjustment

.

. . . 25

 

I. Replacing the Spark Plug

.

. . . 26

 

J. Accessories/Replacement parts .

.

. . . 26

VIII. Cleaning and Storage

.

. . . 27

X.

Troubleshooting Chart

.

. . . 28

XI.

Specifications

.

. . . 29

XII.

Warranty

.

.31-32

CONTENTS OF CARTON

This unit should consist of the following:

Model 780r or Model 790r Trimmer/Brushcutter J-Handle and Hardware

Cutting Attachment Shield and Hardware Blade with Cover and Hardware

Bottle of 2-Cycle Oil

Operator's Manual

Parts Manual

Product Registration Card

Locking Rod

Shoulder Strap

These items may be in the hardware bag or assembled on your unit.

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Contents OPERATOR’S Manual Table of Contents IntroductionCalifornia Emission Regulations Spark ArrestorSymbol Meaning Rules for Safe OperationWhile Operating While Operating with Cutting Blade For Service INFORMATION, Call Safety and International SymbolsSymbol Meaning Safety Alert Symbol Unleaded FuelBrushcutters Replace dull blade TRIMMER/BRUSHCUTTER SafetyHOT Surface Warning Choke ControlFuel Cap Know Your UnitApplications Starter RopeHandle Screws Top Clamp Middle Clamp Bottom Clamp Nuts Assembly InstructionsInstalling and Adjusting the J-HANDLE DecalInstalling the Harness Removing and Installing Cutting Attachment ShieldRemove the Cutting Attachment Install the Cutting BladeRemove the Cutting Attachment Shield Counterclockwise 1/2 turn CounterclockwiseRemove the Cutting Blade Remove the Cutting Blade and Install the Cutting AttachmentInstall the Cutting Attachment ClockwiseOIL and Fuel Information Using Blended FuelsUsing Fuel Additives OIL and Fuel Mixing InstructionsPartial Choke Position B Full Choke Run STARTING/STOPPING InstructionsOn/Off Stop Control Choke Lever Primer BulbOperating the CLICK-LINK Installing the Cutting Attachment or Add-OnsOperating Instructions System Model 790rHolding the Trimmer Adjusting Trimming Line Length Each time the head is bumped, about 1Cutting Blade Operating Tips Tips for Best Trimming Results Using the Cutting BladeDecorative Trimming Frequency Maintenance Required Refer to Maintenance and Repair InstructionsMaintenance Schedule Outer Spool Spring Inner Reel Bump Knob Line InstallationWinding the Existing Inner Reel Indexing TeethHolding Slots Removing the Air Filter/Muffler Cover Installing a Prewound ReelAIR Filter Maintenance Choke Lever Partial Choke Position B ScrewsAir Filter Cleaning the Air FilterReinstalling the Air Filter/Muffler Cover Adjust Idle Speed Screw Carburetor AdjustmentClean Air Filter Check Fuel Mixture110-120 in.lb .3-13.5 Nm ACCESSORIES/REPLACEMENT PartsReplacing the Spark Plug 020Storage Cleaning and StorageCleaning Long Term StorageTroubleshooting Problem Cause ActionDrive Shaft & Cutting Attachment SpecificationsEngine Page Owners Warranty Responsibilities Ryobi Outdoor Products Ryobi Canada INC

780r specifications

The Ryobi 780R is a powerful and reliable gas-powered string trimmer known for its exceptional performance and user-friendly features. Designed for both professionals and homeowners, this tool offers versatility and efficiency for tackling tough trimming jobs around the yard.

One of the standout features of the Ryobi 780R is its robust 30cc 2-cycle engine. This engine provides ample power to handle thick weeds and overgrown grass, ensuring a clean and precise cut with every pass. The lightweight design of the trimmer enhances maneuverability, making it easy to navigate around obstacles such as trees, flower beds, and garden furniture.

The trimmer is equipped with a premium 18-inch cutting swath, allowing for a wider range to be covered in a single pass. This feature can significantly reduce the time required to complete larger trimming tasks. Additionally, the variable speed throttle gives users the flexibility to adjust the cutting power based on the density of the vegetation, offering greater control.

One of the notable technologies in the Ryobi 780R is its Easy Start technology, which simplifies the starting process, reducing the effort required to get the engine running. This is particularly beneficial for users who may struggle with traditional pull-start mechanisms. The trimmer also features an automatic choke system, ensuring optimal engine performance in various conditions.

Another important characteristic is its dual-line feed system. The Ryobi 780R uses a bump head for easy line advancement; simply bump the head on the ground to extend the line as needed. This functionality minimizes downtime and allows users to focus on the task at hand. The dual-line setup also enhances cutting efficiency, making it a great choice for tougher vegetation.

In terms of comfort, the Ryobi 780R incorporates ergonomic handle designs that reduce user fatigue during extended use. The adjustable shaft allows for personalized length settings, catering to users of varying heights, further enhancing comfort and control. With built-in safety features such as a protective shield, users can operate the trimmer with peace of mind.

The Ryobi 780R is not just a powerful trimmer but also a thoughtfully designed tool that combines performance with user convenience. Whether you are maintaining a small garden or handling larger landscaping tasks, this trimmer offers the reliability and efficiency needed to achieve a well-kept lawn. Its blend of innovation and practical features makes it a favored choice among gardening enthusiasts and professionals alike.