OPERATION

handles. Do not let the chain contact the ground. After completing the cut, wait for the saw chain to stop before you move the chain saw. Always stop the motor before moving from tree to tree.

Sometimes it is impossible to avoid pinching (with just standard cutting techniques) or difficult to predict which way a log will settle when cut. To avoid pinching while cutting, rotate or move the log so that the pinch is eliminated.

BUCKING Logs Under Stress

See Figures 18 - 19.

When the log is supported along its entire length, it should be cut from the top or overbucking.

When the log is supported on one end, cut 1/3 the diameter from the underside or underbuck- ing. Then make the finishing cut by overbucking to meet the first cut.

As the log is being cut, it will tend to bend. The saw can become pinched or hung in the log if you make thefirstcutdeeperthan1/3ofthediameterofthelog.

Give special attention to logs under stress to pre- vent the bar and chain from pinching.

When bucking on a slope, always stand on the uphill side of the log as shown in figure 18. When “cutting through,” to maintain complete control of the chain saw, release the cutting pressure near the end of the cut without relaxing your grip on the chain saw handles. Do not let the chain contact the ground. After completing the cut, wait for the saw chain to stop before you move the chain saw. Always stop the motor before moving from tree to tree.

Types of Cutting Used

See Figure 19.

Overbucking

Begin on the top side of the log with the bottom of the saw against the log; exert light pressure downward. Note that the saw will tend to pull away from you.

Underbucking

Begin on the under side of the log with the top of the saw against the log; exert light pressure upward. During underbucking, the saw will tend to push back at you. Be prepared for this reaction and hold the saw firmly to maintain control.

WARNING:

Never climb into a tree to limb or prune. Do not stand on ladders, platforms, a log, or in any position which can cause you to lose your bal- ance or control of the saw.

Log Supported at One End:

LOAD

finishing cut

1st CUT

1/3 Dia

Log Supported at Both Ends:

LOAD

1st CUT 1/3 Dia

FINISHING CUT

Fig. 18

 

Overbucking

 

Underbucking

Fig. 19

17 - English

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Ryobi P542 manuel dutilisation Bucking Logs Under Stress, Types of Cutting Used, See Figures 18, Overbucking, Underbucking
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P542 specifications

The Ryobi P542 is an impressive addition to the world of cordless tools, designed to fulfill a wide variety of cutting tasks with utmost efficiency and precision. Powered by a robust and efficient 18V battery system, this circular saw caters to both professionals and DIY enthusiasts alike, offering a perfect blend of power, portability, and convenience.

One of the main features of the Ryobi P542 is its lightweight, compact design which makes it easy to maneuver and handle for extended periods. At just 5.5 pounds, it reduces fatigue during prolonged use, making it ideal for users who need to tackle multiple projects in one day. Its ergonomic grip ensures a comfortable hold, allowing for accurate cuts without compromising user safety.

The P542 is equipped with a powerful and efficient brushless motor, which not only enhances performance but also extends the tool's longevity. The brushless technology translates to less friction and heat generation, resulting in greater efficiency and battery life. This ensures that users can depend on the tool for longer operations without the need for constant battery replacements.

Another notable feature of the Ryobi P542 is its impressive cutting capacity. It boasts a 6-1/2 inch carbide-tipped blade that can slice through materials with ease. The saw is capable of making bevel cuts up to 50 degrees, offering versatility for both angled and straight cuts. This makes it suitable for various applications, whether you're working on framing, siding, or other woodworking projects.

Safety features are paramount in any power tool, and the Ryobi P542 does not disappoint. It includes a safety guard that provides protection while also allowing for quick blade changes. The electric brake feature stops the blade quickly after the trigger is released, enhancing user safety and reducing the risk of accidents.

Additionally, the P542 is part of Ryobi's ONE+ system, which means it is compatible with over 175 other Ryobi 18V tools. This compatibility not only saves money but also maximizes the utility of the battery platform, allowing users to easily switch batteries between tools.

Overall, the Ryobi P542 is a well-rounded circular saw that exhibits a combination of power, efficiency, and safety, making it a reliable choice for any woodwork enthusiast or professional contractor. With its advanced features and technologies, it stands poised to meet the demands of modern cutting tasks, ensuring high performance and satisfaction with every use.
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