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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.
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:
1-800-345-8746
in the United States or
1-800-265-6778
in 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.
INTRODUCTION
2
TABLE OF CONTENTS
I. California Emission Regulations . . . . . . . . 3
II. Rules for Safe Operation . . . . . . . . . . . 4-8
A. Important Safety Information . . . . . . .4-6
B. Safety and International Symbols . . .6-7
C.Know Your Unit . . . . . . . . . . . . . . . . . .8
III. Assembly Instructions . . . . . . . . . . . . 9-10
A. Installing and Adjusting D-Handle . . . . 9
B. Installing Cutting Attachment Shield . 10
IV. Oil and Fuel Information . . . . . . . . . . . . . 11
V. Starting/Stopping Instructions . . . . . . . . 12
VI. Operating Instructions . . . . . . . . . . . 13-14
A. Holding the Trimmer . . . . . . . . . . . . . .13
B. Adjusting Trimming Line Length . . . . .13
C.Tips for Best Trimming Results . . . . . .14
D.Decorative Trimming . . . . . . . . . . . . . .14
VII. Maintenance and Repair Instructions .14-20
A. Maintenance Schedule . . . . . . . . . . . 15
B. Winding the Inner Reel with New Line 16
C.Installing a Prewound Reel . . . . . . . . . 16
D.Air Filter Maintenance . . . . . . . . . . 17-18
E. Removing the Air Filter/Muffler Cover 17
F. Cleaning the Air Filter . . . . . . . . . . . . 18
G.Reinstalling the Air Filter/Muffler Cover 18
H.Carburetor Adjustment . . . . . . . . . . . 19
I. Replacing the Spark Plug . . . . . . . . . 20
J. Accessories and replacement parts . . 20
VIII. Cleaning and Storage . . . . . . . . . . . . . . 21
IX. Transporting . . . . . . . . . . . . . . . . . . . . . .21
X. Troubleshooting Chart . . . . . . . . . . . . . . 22
XI. Specifications . . . . . . . . . . . . . . . . . . . . 23
XII. Warranty . . . . . . . . . . . . . . . . . . . . . .25-26
CONTENTS OF CARTON
This unit should consist of the following:
• Model 766r Trimmer
D-Handle and Hardware
String Guard and Hardware
• Bottle of 2-Cycle Oil
• Operator's Manual
• Parts Manual
• Product Registration Card
These items may be in the hardware bag or
assembled on your unit.