Introduction table of contents – Ryobi 990r User Manual

Page 2

California Emission Regulations ................................3

II.

Safety Warnings ......................................................3-6
A. Safety Warnings for Brush Blade ..........................4
B. Safety and International Symbols ......................5-6

III.

Assembly Instructions ..........................................7-10
A. Adjusting the J-Handle ..........................................7
B. Installing the Shoulder Strap ................................7
C. Installing the Brush Blade ......................................8
D. Installing the Line Spool ........................................9
E. Operating Split Boom Coupler ............................10

IV.

Oil and Fuel Information......................................11-12

Starting/Stopping Instructions..................................13

VI.

Operating Instructions ..............................................14
A. Adjusting the Trimming Line Length ..................14
B. Decorative Trimming ............................................14
C. Using the Brush Blade ........................................14

VII. Maintenance and Repair Instructions ................15-24

A. Maintenance Schedule ........................................15
B. Line Installation ..............................................16-17
C. Gear Housing Service ..........................................18
D. Air Filter Maintenance ..........................................19
E. Carburetor Adjustment ..................................20-21
F. Inspecting/Cleaning the Muffler ......................21-22
G. Replacing the Spark Plug ....................................23
H. Checking/Adjusting Valve Clearance ............23-24

VIII. Cleaning and Storage ..............................................25

IX.

Specifications ..........................................................25

X. Troubleshooting

Chart ..............................................26

XI. California Emission Control Warranty Statement ....27

XII. Warranty ..................................................................28

THANK YOU

Thank you for purchasing this quality product. This modern
outdoor power tool has been designed to provide you with
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-under-
stand operating instructions. Read the entire manual and
follow all of the instructions to keep your new power tool in
top operating condition.

The other manual that came with your power tool, the
parts manual, contains all of the information that you need
to order parts.

PRODUCT REFERENCES, ILLUSTRA-
TIONS AND SPECIFICATIONS

All information, illustrations and specifications in this man-
ual 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.

INTRODUCTION

TABLE OF CONTENTS

SERVICE INFORMATION

Service on this power equipment within and after
the warranty period can be performed by any
Ryobi Authorized Service Dealer.

Dial 1-800-345-8746 in the United States and
1-800-265-6778 in Canada to obtain the listing of
servicing dealers in your area.

DO NOT RETURN UNIT TO RETAILER.

NOTE:

For users on U. S. Forest Land and in the states of California, Maine, Oregon and Washington. All

U.S. Forest Land and the state of California (Public Resources Codes 4442 and 4443), Oregon and
Washington require, by law that certain internal combustion engines operated on forest brush and/or grass-
covered areas be equipped with a spark arrester, maintained in effective working order. Check with your
state or local authorities for regulations pertaining to these requirements. Failure to follow these
requirements could subject you to liability or a fine. This unit is factory-equipped with a spark
arrester. The replacement part number for the spark arrester is 180890.

THIS PRODUCT IS COVERED BY ONE OR MORE OF THE US PATENTS LISTED BELOW:
5,241,932; 5,176,116; 4,779,405; 4,651,422; 4,589,742; 4,505,040; 4,463,498; 4,356,605; 4,342,235;
4,223,441. OTHER PATENTS PENDING.

California Proposition 65 Warning:

MAKE SURE THIS MANUAL IS READ AND
CAREFULLY UNDERSTOOD BEFORE START-
ING OR OPERATING THIS EQUIPMENT.

NOTE:

PROOF OF PURCHASE WILL BE
REQUIRED FOR WARRANTY
SERVICE.