OPERATION

DRILLING

See Figure 11.

nDepress and release the switch trigger to make sure the drill is in the OFF position before connecting it to a power supply.

nCheck the rotation lever for the correct setting. Refer to “CHANGING THE ROTATION” earlier in this manual.

nSecure the material to be drilled in a vise or with clamps to keep it from turning as the drill bit rotates.

nPlug the hammer drill into a power supply.

nHold the drill firmly and place the bit at the point to be drilled.

nDepress the switch trigger to start the drill.

nMove the drill bit into the workpiece, applying only enough pressure to keep the bit cutting.

NOTE: Do not force the drill or apply side pressure to elongate a hole. Let your drill and bit do the work.

WARNING:

Be prepared for binding at bit breakthrough. When these situations occur, the drill has a tendency to grab and kick in the opposite direction and could cause loss of control when breaking through material. If you are not prepared, this loss of control could result in possible serious injury.

HELPFUL TIPS

nWhen drilling hard, smooth surfaces, use a center punch to mark the desired hole location. This measure will pre- vent the drill bit from slipping off center as you start the hole. However, the variable speed feature allows you to start holes without center punching. To accomplish this, operate the drill at a low speed until you start the hole.

Fig. 11

nWhen drilling metals, use a light oil on the drill to keep it from overheating. The oil will prolong the life of the bit and increase the drilling action.

nIf the bit jams in the workpiece or if the drill stalls, stop the tool immediately. Remove the bit from the workpiece and determine the reason for jamming.

MAINTENANCE

WARNING:

When servicing, use only identical Ryobi replacement parts. Use of any other parts may create a hazard or cause product damage.

GENERAL MAINTENANCE

Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from various types of commercial solvents and may be damaged by their use. Use clean cloths to remove dirt, dust, oil, grease, etc.

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.

WARNING:

Do not at any time let brake fluids, gasoline, petroleum- based products, penetrating oils, etc., come in contact with plastic parts. Chemicals can damage, weaken or destroy plastic which may result in serious personal injury.

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Ryobi D551H manual Drilling, Helpful Tips, General Maintenance
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D551H specifications

The Ryobi D551H is a highly regarded pneumatic nailer designed for both professionals and DIY enthusiasts. This tool stands out due to its powerful capabilities and thoughtful features, making it an essential addition to any woodworking toolkit.

One of the key features of the Ryobi D551H is its ability to drive a range of fasteners with exceptional precision. This nailer accommodates 16-gauge finishing nails, delivering the power necessary for securing trim, molding, and other intricate woodworking applications. The tool’s depth adjustment feature allows users to customize the depth of each nail, ensuring a clean and professional finish every time.

The Ryobi D551H also boasts a powerful motor that drives nails quickly and consistently. This pneumatic design is effective for high-volume jobs, reducing fatigue and time spent on the job site. Its lightweight construction enhances portability, making it easy to maneuver in tight spaces and ideal for long periods of use.

Another notable technology in the D551H is its built-in oil-free design. This eliminates the need for regular maintenance associated with oil-based nailers, allowing users to focus more on their projects rather than upkeep. Additionally, the tool features an adjustable exhaust that directs air away from the user, keeping the workspace clean and comfortable.

Safety is a priority in the design of the Ryobi D551H. The tool includes a trigger lock that prevents accidental firing, ensuring that users can work confidently and securely. Combined with a no-mar tip that protects surfaces from damage, this nailer prioritizes the safety and quality of the user experience.

Moreover, the magazine capacity of the D551H allows for numerous fasteners to be loaded at once, reducing the frequency of reloading during extended use. This feature significantly increases efficiency, particularly in demanding work environments.

The Ryobi D551H is also compatible with a variety of accessories and attachments, enhancing its versatility. Whether users are tackling a home improvement project or engaging in professional construction tasks, the D551H is engineered to meet diverse demands with ease and reliability.

In summary, the Ryobi D551H delivers a powerful, user-friendly experience with its impressive features, advanced technologies, and commitment to safety. Ideal for both seasoned professionals and those new to woodworking, this pneumatic nailer is a robust tool designed to simplify tasks and enhance productivity on any project.
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