Instruction/ maintenance manual of the product D551H Ryobi
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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.
2 3 n Introduction ..................................................................................................................................................................... 2 � n General Safety Rules .....................................
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.
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.
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 .
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.
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 .
8 9 FEA TURES Fig. 1 PRODUCT SPECIFICA TIONS Chuck Capacity .............................................................................................................................................. 5/64 in. - 1/2 in. Hammer Speed ................
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.
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.
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.
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.
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 .
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.
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.
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 .
An important point after buying a device Ryobi D551H (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Ryobi D551H yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Ryobi D551H - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Ryobi D551H you will learn all the available features of the product, as well as information on its operation. The information that you get Ryobi D551H will certainly help you make a decision on the purchase.
If you already are a holder of Ryobi D551H, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Ryobi D551H.
However, one of the most important roles played by the user manual is to help in solving problems with Ryobi D551H. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Ryobi D551H along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
