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The rules should oblige the seller to give the purchaser an operating instrucion of Ryobi D551H, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Ryobi D551H one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Ryobi D551H. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Ryobi D551H should contain:
- informations concerning technical data of Ryobi D551H
- name of the manufacturer and a year of construction of the Ryobi D551H item
- rules of operation, control and maintenance of the Ryobi D551H item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Ryobi D551H alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Ryobi D551H, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Ryobi service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Ryobi D551H.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Ryobi D551H item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
SA VE THIS MANUAL FOR FUTURE REFERENCE Y our hammer drill has been engineered and manufactur ed to Ryobi’ s high standard for dependability , ease of operation, and operator safety . When properly car ed for , it will give you years of rugged, trouble-free performance. WARNING: T o r educe the risk of injury , the user must read and understand th[...]
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2 3 n Introduction ..................................................................................................................................................................... 2 � n General Safety Rules ............................................................... ........................................................................[...]
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Page 3
2 3 GENERAL SAFETY RULES n Avoid accidental starting. Be sure switch is off before plugging in. Carrying tools with your finger on the swi tch o r plug ging in tool s tha t have the swi tch o n invites accidents. n Remove adjusting keys or wrenches before turning the tool on. A wrench or a key that is left attached to a rotating part of the tool ma[...]
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4 5 SERVICE n Tool service must be performed only by qualified repair personnel. Service or maintenance performed by unqualified personnel may result in a risk of injury. n When servicing a tool, use only id entical replacement parts. Follow instructions in the Maintenance section of this manual. Use of unauthorized parts or failure to fol low M ai[...]
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4 5 SYMBOLS Some of the following symbols may be used on this tool. Please study them and learn their meaning. Proper interpreta- tion of these symbols will allow you to operate the tool better and safer . Read The Operator’ s Manual Safety Alert No Hands Symbol No Hands Symbol No Hands Symbol No Hands Symbol SYMBOL NAME DESIGNA TION/EXPLANA TION[...]
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6 7 SYMBOLS SERVICE Servicing r equires extreme car e and knowledge and should be performed only by a qualified service technician. For service we suggest you return the product to your nearest AUTHORIZED SERVICE CENTER for r epair . When servic- ing, use only identical replacement parts. WARNING: SA VE THESE INSTRUCTIONS The following signal words[...]
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6 7 ELECTRICAL EXTENSION CORDS When using a power tool at a considerable distance from a power sour ce, be sur e to use an extension cor d that has the capacity to handle the current the tool will draw . An undersized cord will cause a dr op in line voltage, resulting in overheating and loss of power . Use the chart to determine the minimum wir e s[...]
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8 9 FEA TURES Fig. 1 PRODUCT SPECIFICA TIONS Chuck Capacity .............................................................................................................................................. 5/64 in. - 1/2 in. Hammer Speed ...................................................................................................................[...]
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8 9 FEA TURES KNOW YOUR HAMMER DRILL See Figure 1. Before attempting to use this product, familiarize yourself with all operating features and safety rules. AUXILIAR Y HANDLE ASSEMBL Y An auxiliary handle assembly is installed on the hammer drill. For ease of operation, you may use the handle with either your left hand or your right hand. CHUCK KEY[...]
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10 11 WARNING: If any parts are missing do not operate this tool until the missing parts are replaced. Failure to heed this warning could result in possible serious personal injury . WARNING: Do not attempt to modify this tool or create accesso- ries not recommended for use with this tool. Any such alteration or modification is misuse and could res[...]
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10 11 WARNING: Always unplug the drill befor e inserting or r emoving bits or adjus tin g the aux ilia ry handl e asse mbly or dept h gaug e rod. Failure to unplug the tool could result in accidental starting causing possible serious injury . INSERTING BITS See Figure 2. n Unplug the hammer drill. n Position the chuck jaws so that the opening is sl[...]
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Page 12
12 13 OPERA TION ADJUSTING THE DEPTH GAUGE ROD See Figure 5. n Unplug the hammer drill. n Loosen the handle assembly by turning the handle coun - terclockwise. n Adjust the depth gauge rod so that the drill bit extends beyond the end of the rod to the required drilling depth. n Tighten handle assembly by turning handle clockwise. ADJUSTING THE DRIL[...]
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12 13 OPERA TION TURNING THE HAMMER DRILL ON/OFF See Figure 8. T o turn the hammer drill on and off. n To turn the drill on: depress the switch trigger. n To turn the drill off: release the switch trigger. CHANGING THE ROT A TION See Figure 9. The direction of the chuck is controlled by the lever located above the switch trigger . NOTE: The design [...]
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14 15 WARNING: When servicing, use only identical Ryobi replacement parts. Use of any other parts may create a hazard or cause product damage. WARNING: Always wear safety goggles or safety glasses with side shields during power tool operation or when blowing dust. If operation is dusty , also wear a dust mask. GENERAL MAINTENANCE Avoid using solven[...]
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14 15 MAINTENANCE Ele ctr ic tool s used on fi ber g las s mater ial , wall boa rd , spac klin g compounds, or plaster are subject to accelerated wear and possible premature failure because the fiberglass chips and grindings ar e highly abrasive to bearings, brushes, commu- tator s, et c. Con seque ntly , we do not recomm ended using this tool for [...]
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R YOBI TECHNOLOGIES, INC. 1428 Pearman Dairy Road, Anderson, SC 29625 Post Office Box 1207, Anderson, SC 29622-1207 Phone 1-800-525-2579 www .ryobitools.com 983000-633 1-05 • SER VICE Now that you have purchased your tool, should a need ever exist for repair parts or service, simply contact your nearest Ryobi Authorized Service Center . Be sur e [...]