SAFETY INSTRUCTIONS

C Clearing the trunk and preparing your retreat

Remove any branches that are in the way. To do this it is best to work from the top down and keep the trunk between you and the chain saw. Never limb above shoulder height.

Remove any undergrowth from the base of the tree and check the area for obstacles (stones, branches, holes, etc.) so that you have a clear path of retreat when the tree starts to fall. Your path of retreat should be roughly 135 degrees behind the intended felling direction.

D Felling

Felling is done using three cuts. First you make the DIRECTIONAL CUTS, which consist of the TOP CUT and the BOTTOM CUT; followed by the FELLING CUT. By placing these cuts correctly you can control the felling direction very accurately.

DIRECTIONAL CUT

To make the DIRECTIONAL CUT you begin with the TOP CUT. Stand to the right of the tree and cut downwards at an angle.

Next make the BOTTOM CUT so that it finishes at the end of the TOP CUT.

The directional cut 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 with the bottom edge of the bar.

Make the FELLING CUT about 3-5 cm (1.5-2 inches) above the flat section of the

DIRECTIONAL CUT.

Use full throttle and bring the bar and chain 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 BREA- KING BAR into the cut as soon as it is deep enough.

Finish the FELLING CUT parallel with the DIRECTIONAL CUT LINE so that the distance between them is at least at least 1/10 of the trunk diameter. The uncut section of the trunk is called the HINGE.

The HINGE act as hinges that control the felling direction of the falling tree.

All control over the felling direction is lost if the HINGE is too narrow or if the directional cut and felling cut are badly placed.

When the felling cut and directional cut are complete the tree should start to fall under its own weight or with the aid of a FELLING WEDGE or BREAKING BAR.

22 – English

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Jonsered CS 2150, CS 2141, CS 2145 manual Clearing the trunk and preparing your retreat, Felling
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CS 2145, CS 2150, CS 2141 specifications

The Jonsered CS 2141, CS 2150, and CS 2145 chainsaws are renowned for their powerful performance and advanced technologies, making them the top choice for both professional loggers and enthusiastic DIYers. Each model shares a commitment to delivering reliability, efficiency, and precision in cutting, while still prioritizing user comfort and safety.

The CS 2141 model is designed with a robust 40.9 cc engine that provides strong power output while remaining lightweight, making it easy to maneuver. This chainsaw features a 15-inch guide bar, ideal for tackling small to medium-sized trees and clearing brush. The innovative fuel system ensures longer running times, reducing the frequency of refueling interruptions. A hallmark of this model is its Easy Start system, eliminating the hassle of hard starts to get you cutting quickly.

Moving up, the Jonsered CS 2150 boasts a slightly larger engine capacity of 50.2 cc, which translates to enhanced power, particularly useful for more demanding cutting tasks. This model is equipped with a 20-inch guide bar, allowing for efficient felling and limbing of larger trees. Its design incorporates the Air Injection air filtration system that separates debris from the air, extending the life of the air filter and reducing maintenance needs. The lightweight design coupled with anti-vibration technology makes operating this model comfortable, even during extended use.

The CS 2145 model is a versatile chainsaw that finds a perfect balance between power and weight. With a 45.7 cc engine, it provides excellent cutting performance for a range of applications. It features a 16-inch guide bar, making it adaptable for various tasks from pruning to more extensive logging work. Like its counterparts, the CS 2145 includes the Smart Start technology for effortless starting and an automatic oil pump to ensure a steady flow of lubrication to the chain, increasing the overall lifespan of the saw.

All three models utilize Jonsered's revolutionary X-Torq engine technology, which significantly reduces fuel consumption and emissions, underlining their commitment to environmentally friendly operation. Furthermore, each chainsaw is ergonomically designed, with focus on comfortable grip and controls that allow users to work with precision and ease.

In summary, the Jonsered CS 2141, CS 2150, and CS 2145 chainsaws combine cutting-edge technology with practical features that meet the needs of users in various cutting conditions. With powerful engines, advanced filtration systems, and user-friendly designs, these models set a high standard in the chainsaw market.
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