9

In order to keep control of your saw, always maintain a firm foothold. Never work on a ladder, in a tree or on any other insecure support. Never use the saw above shoulder height (fig. 9).

10

Position the chain saw in such a way that your body is clear of the cutting attachment whenever the engine is running (fig. 10).

Don’t put pressure on the saw when reaching the end of a cut. The pressure may cause the bar and rotating chain to pop out of the cut or kerf, go out of control and strike the operator or some other object. If the rotating chain strikes some other object a reactive force (see pages 10 to 12 ) may cause the chain to strike the operator.

Reactive forces during the cut, including kickback

WARNING!

Reactive forces, that may occur during any cut are kickback, pushback and pull-in. Reactive forces can be dangerous! In any chain saw, the powerful force used to cut wood can be reversed (and work against the operator).

If the rotating chain is suddenly stopped by contact with any solid object like a log or branch or is pinched, the reactive forces instantly occur. These reactive forces may result in loss of control which may, in turn, cause serious or fatal injury. An understanding of the causes of these reactive forces may help you avoid loss of control.

The most common reactive forces are

-kickback,

-pushback,

-pull-in.

11

Kickback:

Kickback occurs when the upper quadrant of the bar nose contacts a solid object in the wood or is pinched (fig. 11). The reaction of the cutting force of the chain causes a rotational force of the chain saw in the direc tion opposite to the chain movement, mainly in the plane of the bar. This may fling the bar in an uncon- trolled arc towards the operator.

12

This reaction can occur in a fraction of a second and under some circumstances, cause the guide bar and chain to strike the operator with enough force to cause severe or fatal injury. It may also occur during limbing. It also occurs when the nose of the guide bar is pinched unexpectedly, unintentionally contacts solid material in the wood (fig.12) or is incorrectly used to begin a plunge or boring cut.

The greater the force of the kickback reaction, the more difficult it becomes for the operator to control the saw.

9

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Image 9
Makita DCS 400, DCS 401, DCS 340, DCS 341 manual Kickback, Reactive forces during the cut, including kickback

DCS 400, DCS 341, DCS 401, DCS 340 specifications

Makita has been an industry leader in power tools, consistently delivering high-performance products that meet the needs of professionals and DIY enthusiasts alike. Among their impressive lineup of tools, the Makita DCS 340, DCS 401, DCS 341, and DCS 400 chainsaws stand out for their innovation, reliability, and ease of use. Each model offers unique features that cater to different applications and requirements.

The Makita DCS 340 is designed for versatility and efficiency. Equipped with a powerful 34cc engine, it provides ample power for a variety of cutting tasks. The lightweight design enhances maneuverability, making it an excellent choice for both professionals and home users. One of the key features of the DCS 340 is its advanced anti-vibration system, which reduces fatigue during extended use. The easy-start mechanism further enhances user experience, allowing for quick and hassle-free operation.

Next in line is the DCS 401, which boasts a 40cc engine, offering elevated power for more demanding applications. This model is particularly effective for heavy-duty cutting tasks such as felling larger trees and processing timber. The DCS 401 features a chain brake for improved safety, as well as an ergonomic handle that ensures a comfortable grip and enhanced control. The automatic chain oiling system also ensures consistent lubrication for smoother operation and extends the lifespan of the saw.

The DCS 341 model is similar to the DCS 340 but offers added convenience with its 40cc engine and a slightly different configuration tailored for more intricate work. It includes a tool-less chain adjustment feature, enabling quick and easy chain tension adjustments without additional tools. This model's lightweight design is further enhanced by its compact build, making it ideal for a variety of outdoor jobs like pruning and trimming.

Lastly, the Makita DCS 400 features a robust 40cc engine as well but is specifically designed for professional-grade performance. It excels in demanding environments, thanks to its durable construction and advanced air filtration system. This model significantly reduces wear and tear and increases longevity. The DCS 400 also offers a fast idle for easier cold starts and a transparent fuel tank, allowing for quick visual checks on fuel levels.

Overall, whether you're a professional or a hobbyist, the DCS series from Makita provides reliable, powerful, and user-friendly options for all your cutting needs. Each model is designed with safety, comfort, and efficiency in mind, ensuring that you can tackle any project with confidence.