Turning the Hammer Drill ON/OFF, Locking on

OPERATION

TURNING THE HAMMER DRILL ON/OFF

See Figure 8.

To turn the hammer drill on and off.

nTo turn the drill on: depress the switch trigger.

nTo turn the drill off: release the switch trigger.

CHANGING THE ROTATION

See Figure 9.

The direction of the chuck is controlled by the lever located above the switch trigger.

NOTE: The design of the switch will not permit changing the direction of rotation while the drill is running. Release the switch trigger and allow the drill to stop before chang-

DEPRESS SWITCH TRIGGER TO

ing its direction.

nFor forward rotation: Move the lever to the left.

nFor reverse rotation: Move the lever to the right.

NOTE: The hammer drill will not run unless the lever is pushed fully to the left or right.

CAUTION:

The hammer drill is not designed for reverse hammer- ing. Failure to heed this caution may result in damage to the drill.

TURN HAMMER DRILL ON

FORWARD

ROTATION

Fig. 8

LOCKING ON

See Figure 10.

The lock-on feature allows you to lock the drill on when you operate it continuously for extended periods of time. If you have the “lock-on” feature engaged during use and the drill is disconnected from the power supply, disengage the “lock-on” feature immediately. Also, do not lock the trigger switch if you might need to suddenly stop the drill.

WARNING:

Before connecting the hammer drill to a power supply, make sure it is not in the “locked-on” position. Failure to do so could result in accidental starting of the drill result- ing in possible serious injury.

To lock on:

nDepress the switch trigger.

nPush in the lock-on button.

nRelease the switch trigger.

nRelease the lock-on button.

NOTE: To release the lock, depress the switch trigger.

REVERSE
ROTATION	Fig. 9
	LOCK-ON
	BUTTON

SWITCH

TRIGGER

Fig. 10

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.

Ryobi D551H manual Turning the Hammer Drill ON/OFF, Changing the Rotation, Locking on

Models: D551H