Saw chain cutter sharpness, To avoid kickback

Many factors influence the occurence and force of the kickback reaction. The type of bar and saw chain you use is a factor in the force of the kickback reaction.

The speed of contact at which the cutter contacts the object.

Kickback force increase with the rate of impact.

The contact angle between the nose of the bar and the foreign object (fig. 11).

Kickback is most pronounced in the upper quadrant of the bar nose.

MAKITA chain types are designed to reduce kickback forces.

The depth gauges:

Improper lowering of the depth gauges also increases the risk of a kickback.

Saw chain cutter sharpness:

WARNING!

A dull improperly sharpened chain may increase the risk of kickback. Always cut with a properly sharpened chain.

Devices for reducing the risk of kickback injury

MAKITA have developed a special chain brake to reduce the risk of kickbacks.

This chain brake increases the safety factor on the job, e.g. when the saw suddenly bucks upwards the chain stops rotating within a fraction of a second. A deflection guard on the disengaging lever of the chain brake and a scoop rear handle ensure that the operator’s hands are fully protected at all times.

Kickback tendency increases as the radius or size of the guide bar nose increases. MAKITA have devel- oped guide bars with small nose radius, to reduce the kickback tendency.

WARNING!

No chain brake prevents kickback.

These brakes are designed only to stop the chain, if activated.

To ensure a proper operation of the chain brake, it must be properly maintained. Furthermore, there must be a sufficient distance between the operator and the bar to ensure that the chain brake has sufficient time to activate and stop the chain before potential contact with the operator.

To avoid kickback

The best protection from personal-injury that may result from kickback is to avoid kickback situations:

1.Hold the chain saw firmly with both hands and maintain a secure grip.

2.Be aware of the location of the guide bar nose at all times.

3.Never bring the nose of the guide bar in contact with any object. Do not cut limbs with the nose of the guide bar. Be especially careful with small, tough limbs, small size brush and saplings which may easily catch the chain.

4.Don’t overreach.

5.Don’t cut above shoulder height.

6.Begin cutting and continue at full throttle.

7.Cut only one log at a time.

8.Use extreme caution when re-entering a previous cut.

9.Do not attempt plunge cuts (see page 13) if you are not experienced with these cutting techniques.

10.Be alert for shifting of the log or other forces that may cause the cut to close and pinch the chain.

11.Maintain saw chain properly. Cut with a correctly sharpened, properly tensioned chain at all times.

12.Stand to the side of the cutting path of the chain saw.

DCS 6800I, DCS 6000I specifications

The Makita DCS 6000I and DCS 6800I are two formidable chainsaw models from a brand renowned for its commitment to durability, performance, and innovation. Both saws are designed for professional users who require power, efficiency, and precision in their cutting tasks.

Starting with the DCS 6000I, it offers an impressive engine displacement of 59 cc, producing high torque and enabling effective cutting through thick wood with ease. Its lightweight design, weighing approximately 5.8 kg, ensures better maneuverability during extended use. The DCS 6000I incorporates a 20-inch guide bar, making it suitable for a variety of applications, from felling trees to milling logs.

A key feature of the DCS 6000I is its advanced anti-vibration technology, which minimizes user fatigue and enhances comfort. The model is equipped with an automatic chain lubrication system that maintains optimal performance and prolongs the lifespan of the chain. The air cleaner is easily accessible and designed to filter out debris, ensuring clean air intake and efficient engine performance.

Moving on to the DCS 6800I, it takes power to the next level, featuring a robust 66 cc engine. This model is an ideal choice for professional users involved in heavy-duty cutting tasks. Weighing approximately 6.2 kg, it strikes a balance between power and manageability. Its 24-inch guide bar makes it a perfect fit for felling larger trees and undertaking more demanding forestry work.

The DCS 6800I is characterized by its high-performance oil pump that allows for adjustable flow rates, ensuring efficient lubrication based on the cutting conditions. Additionally, this model features an innovative decompression valve, allowing for easy starting and improved user experience. The DCS 6800I also has a semi-automatic choke that enhances startup efficiency.

Both models exhibit excellent build quality, featuring magnesium components that contribute to their lightweight yet robust structure. They also come with a tool-less air filter cover, facilitating ease of maintenance. Safety is a priority with both saws, equipped with chain brakes and throttle locks to prevent accidental starts.

In summary, the Makita DCS 6000I and DCS 6800I are exceptional chainsaws that cater to the needs of professional users. With advanced technologies, durable construction, and innovative features, these models are well-suited for various applications in forestry and landscaping, ensuring reliability, efficiency, and safety in all cutting tasks.

Makita DCS 6800I, DCS 6000I manual Saw chain cutter sharpness, To avoid kickback, Depth gauges

Models: DCS 6800I DCS 6000I