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SPECIFIC SAFETY RULES AND SYMBOLS FOR CIRCULAR SAWS

1.DANGER! Keep hands away from cutting area and blade. Keep your second hand on auxiliary handle or motor housing. If both hands are holding the saw, they cannot be cut by the blade.

2.Keep your body positioned to either side of the saw blade, but not in line with the saw blade. KICKBACK could cause the saw to jump backwards. (See "Causes and Operator Prevention of KICKBACK.")

3.Do not reach underneath the work. The guard cannot protect you from the blade below the work.

4.Check lower guard for proper closing before each use. Do not operate saw if lower guard does not move freely and close instantly. Never clamp or tie the lower guard into the open position. If saw is accidentally dropped, lower guard may be bent. Raise the lower guard with the Retracting Handle and make sure it moves freely and does not touch the blade or any other part, in all angles and depths of cut.

5.Check the operation and condition of the lower guard spring. If the guard and the spring are not operating properly, they must be serviced before use. Lower guard may operate sluggishly due to damaged parts, gummy deposits, or a buildup of debris.

6.Lower guard should be retracted manually only for special cuts such as “Pocket Cuts” and “Compound Cuts.” Raise lower guard by Retracting Handle. As soon as blade enters the material, lower guard must be released. For all other sawing, the lower guard should operate automatically.

7.Always observe that the lower guard is covering the blade before placing saw down on bench or floor. An unprotected, coasting blade will cause the saw to walk backwards, cutting whatever is in its path. Be aware of the time it takes for the blade to stop after switch is released.

8.NEVER hold piece being cut in your hands or across your Ieg. It is important to support the work properly to minimize body exposure, blade binding, or loss of control.

9.Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring. Contact with a “live” wire will also make exposed metal parts of the tool “live” and shock the operator.

10.When ripping always use a rip fence or straight edge guide. This improves the accuracy of cut and reduces the chance for blade binding.

11.Always use blades with correct size and shape (diamond vs. round) arbor holes. Blades that do not match the mounting hardware of the saw will run eccentrically, causing loss of control.

12.Never use damaged or incorrect blade washers or bolts. The blade washers and bolt were specially designed for your saw, for optimum performance and safety of operation.

13.Causes and Operator Prevention of Kickback:

Kickback is a sudden reaction to a pinched, bound, or misaligned saw blade, causing an uncontrolled saw to lift up and out of the workpiece toward the operator.

When the blade is pinched or bound tightly by the kerf closing down, the blade stalls and the motor reaction drives the unit rapidly back toward the operator.

If the blade becomes twisted or misaligned in the cut, the teeth at the back edge of the blade can dig into the top surface of the wood causing the blade to climb out of the kerf and jump back toward the operator.

Kickback is the result of tool misuse and/or incorrect operating procedures or conditions and can be avoided by taking proper precautions as given below:

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Porter-Cable 447k, 347k instruction manual Specific Safety Rules and Symbols for Circular Saws
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447k, 347k specifications

The Porter-Cable 347K and 447K are two innovative pneumatic nailers designed to meet the needs of both professionals and DIY enthusiasts. Known for their robust performance and reliable construction, these nailers are ideal for a variety of applications, including framing, roofing, and finishing work.

One of the main features of the Porter-Cable 347K is its capability to handle a wide range of fasteners. This model supports 3 to 3-1/4 inch framing nails, making it versatile for various construction tasks. The tool is equipped with a tool-free depth adjustment, allowing users to easily set the driving depth of the nails, ensuring a precision finish. This feature is especially helpful for applications where nail placement is critical, such as in cabinetry or trim work.

On the other hand, the 447K model is primarily geared towards fastening applications that require a lighter touch. This nailer is capable of firing 2 to 4-inch angled finish nails, suitable for tasks like crown molding and furniture assembly. The quick-release nose design of the 447K ensures that jammed nails can be cleared quickly, minimizing downtime on the job site.

In terms of technology, both models incorporate an integrated air filter to keep the internal mechanisms clean and functioning smoothly. This feature is vital for extending the lifespan of the tool and maintaining consistent performance. Furthermore, the clear side window on both nailers allows users to easily monitor nail levels, reducing the likelihood of running out of fasteners during crucial moments.

Both the 347K and 447K models boast lightweight designs, making them easy to maneuver for extended periods. This ergonomic advantage enhances user comfort, making them suitable for prolonged use on large projects. Additionally, the rubber grip and trigger ensure that users have a secure hold on the nailers, offering superior control and precision during operation.

Both Porter-Cable nailers come equipped with a durable carrying case for easy transport and storage, ensuring that the tools remain organized and protected when not in use.

Overall, the Porter-Cable 347K and 447K nailers stand out for their reliability, performance, and user-friendly features. Whether you're a professional contractor or a weekend warrior, these tools will add efficiency and precision to your construction projects, making them a valuable addition to any toolbox.
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