WORKING TECHNIQUES

Finish the felling cut parallel with the directional cut line so that the distance between them is at least 1/10 of the trunk diameter. The uncut section of the trunk is called the felling hinge.

The felling hinge controls the direction that the tree falls in.

All control over the felling direction is lost if the felling hinge is too narrow or non-existent, or if the directional cuts and felling cut are badly placed.

When the felling cut and directional cut are complete the tree should start to fall by itself or with the aid of a felling wedge or breaking bar.

We recommend that you use a bar that is longer than the diameter of the tree, so that you can make the felling cut and directional cuts with single cutting strokes. See the Technical data section to find out which lengths of bar are recommended for your saw.

There are methods for felling trees with a diameter larger than the bar length. However these methods involve a much greater risk that the kickback zone of the bar will come into contact with the tree.

WARNING! Unless you have special training

!we advise you not to fell trees with a diameter larger than the bar length of your saw!

Limbing

WARNING! Most kickback accidents happen

!during limbing! Pay close attention to the position of the kickback zone of the bar when you are limbing branches that are in tension!

Make sure that you can stand and move about safely. Work on the left side of the trunk. Work as close as possible to the chain saw for maximum control. If possible, let the weight of the chain saw rest on the trunk.

Keep the trunk between you and the chain saw as you move along the trunk.

Freeing a tree that has fallen badly

Cutting trees and branches that are in tension

Preparations:

Work out which side is in tension and where the point of maximum tension is (i.e. where it would break if it was bent even more).

Decide which is the safest way to release the tension and whether you are able to do it safely. In complicated situations the only safe method is to put aside your chain saw and use a winch.

General advice:

Position yourself so that you will be clear of the tree or branch when the tension is released.

Make one or more cuts at or near the point of maximum tension. Make as many cuts of sufficient depth as necessary to reduce the tension and make the tree or branch break at the point of maximum tension.

Never cut straight through a tree or branch that is in tension!

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Jonsered CS 2139T Freeing a tree that has fallen badly, Cutting trees and branches that are in tension, General advice
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CS 2139T specifications

The Jonsered CS 2139T is a robust chainsaw designed for both professional and semi-professional users seeking reliability, power, and ease of use. This model is perfect for tree care, firewood cutting, and other demanding tasks in forestry and landscaping.

One of the standout features of the CS 2139T is its powerful 39cc 2-stroke engine, which delivers impressive performance while maintaining fuel efficiency. This engine is designed for a quick start, thanks to its efficient ignition system, reducing the time users spend trying to get the saw running. The power-to-weight ratio is favorable, making it suitable for extended use without causing fatigue.

The chainsaw incorporates advanced technology such as the Clean Power engine, which minimizes harmful emissions while maximizing fuel efficiency. This is particularly beneficial for environmentally conscious users and complies with stringent emission regulations. The CS 2139T also features an Anti-Vibration system, which significantly reduces vibrations felt by the operator, enhancing comfort and control, especially during prolonged use.

Safety is a priority with the CS 2139T, featuring a chain brake that engages automatically in the event of kickback, ensuring that the user is protected from potential accidents. Additionally, the saw is equipped with a throttle lock that prevents accidental engagement, providing extra peace of mind.

The ergonomic design of the handle and controls has been thoughtfully engineered for ease of use, allowing operators to maneuver the chainsaw with confidence. The unique air filtration system enhances the longevity of the engine by preventing dust and debris from entering, resulting in less frequent maintenance and longer operating life.

The chainsaw also boasts a durable construction, with robust materials that withstand the rigors of cutting hard wood and facing varying weather conditions. A tool-free chain tensioning system allows for quick and easy adjustments, ensuring that users can maximize performance without wasting time.

In summary, the Jonsered CS 2139T is a reliable choice for demanding users who require a combination of power, efficiency, and safety. With its advanced technologies and thoughtful design features, it stands out as an exceptional tool in the world of chainsaws.
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