Table Of Contents; Introduction - Ryobi D550H Operator's Manual

■ Introduction ........................................................................................................................................................ 2
■ General Safety Rules .....................................................................................................................................3-4
■ Specific Safety Rules ......................................................................................................................................... 4
■ Symbols ............................................................................................................................................................. 5
■ Specifications .................................................................................................................................................... 6
■ Unpacking .......................................................................................................................................................... 6
■ Applications ....................................................................................................................................................... 6
■ Features .........................................................................................................................................................7-8
■ Operation ......................................................................................................................................................9-13
■ Maintenance ...............................................................................................................................................13-14
■ Parts, Ordering, and Service ........................................................................................................................... 16
Your hammer drill has many features for making the use
of this tool more pleasant and enjoyable. Safety,
performance, and dependability have been given top
priority in the design of this hammer drill making it easy
to maintain and operate.
The operation of any power tool can result in foreign objects being thrown into your eyes,
WEAR YOUR
which can result in severe eye damage. Before beginning tool operation, always wear safety
SAFETY GLASSES
goggles or safety glasses with side shields and a full face shield when needed. We
recommend Wide Vision Safety Mask for use over eyeglasses or standard safety glasses
FORESIGHT IS BETTER
with side shields. Always wear eye protection which is marked to comply with ANSI Z87.1.
THAN NO SIGHT
Look for this symbol to point out important safety
precautions. It means attention!!! Your safety is involved.

TABLE OF CONTENTS

INTRODUCTION

2
WARNING:
Do not attempt to use this tool until you have read
thoroughly and understand completely the operator's
manual. Pay close attention to the safety rules, in-
cluding Dangers, Warnings, and Cautions. If you
use your tool properly and only for what it is in-
tended, you will enjoy years of safe, reliable service.