Felling, Directional cuts | Jonsered CS 2139T guide

WORKING TECHNIQUES

Once you have decided which way you want the top of the tree to fall you must assess which way the top of the tree would fall naturally.

Several factors affect this:

•Lean of the tree

•Bend

•Wind direction

•Arrangement of branches

•Weight of snow

You may ﬁnd you are forced to let the tree fall in its natural direction because it is impossible or dangerous to try to make it fall in the direction you ﬁrst intended.

Another very important factor, which does not affect the felling direction but does affect your safety, is to make sure the tree has no damaged or dead branches that might break off and hit you during felling.

WARNING! During critical felling operations,

!hearing protectors should be lifted immediately when sawing is completed so that sounds and warning signals can be heard.

Felling

Felling is done using three cuts. First you make the directional cuts, which consist of the top cut and the bottom cut, then you ﬁnish with the felling cut. By placing these cuts correctly you can control the felling direction very accurately.

Directional cuts

To make the directional cuts you begin with the top cut. Stand to the right of the tree and cut on the pull stroke.

Next make the bottom cut so that it ﬁnishes exactly at the end of the top cut.

The directional cuts should run 1/4 of the diameter through the trunk and the angle between the top cut and bottom cut should be 45°.

The line where the two cuts meet is called the directional cut line. This line should be perfectly horizontal and at right angles (90°) to the chosen felling direction.

Felling cut

The felling cut is made from the opposite side of the tree and it must be perfectly horizontal. Stand on the left side of the tree and cut on the pull stroke.

Make the felling cut about 3-5 cm (1.5-2 inches) above the bottom directional cut.

Set the spike bumper (if one is ﬁtted) just behind the felling hinge. Use full throttle and advance the chain/bar slowly into the tree. Make sure the tree does not start to move in the opposite direction to your intended felling direction. Drive a wedge or breaking bar into the cut as soon as it is deep enough.

24 – English

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.

Jonsered CS 2139T manual Felling, Directional cuts

Models: CS 2139T