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Jonsered 670, 625, 630 manual Clearing the trunk and preparing your retreat, Felling

Models: 630 670 625

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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.

Set the spike bumper in behind the breaking strip (if one is fitted).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 BREAKING 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 BREAKING STRIP.

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

All control over the felling direction is lost if the BREA- KING STRIP 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.

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Jonsered 670, 625, 630 manual Clearing the trunk and preparing your retreat, Felling
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630, 670, 625 specifications

The Jonsered 625, 670, and 630 chainsaws represent a robust line of products designed specifically for both professional and amateur users who require reliability, power, and efficiency in their cutting tasks. These models are a testament to Jonsered's commitment to innovation and performance in the forestry and outdoor equipment sector.

The Jonsered 625 features a compact design, making it ideal for users who need a lightweight tool for trimming, pruning, or cutting smaller trees. This model is equipped with a powerful engine that delivers an impressive power-to-weight ratio, enabling users to handle tough jobs without feeling fatigued. One of the standout features of the 625 is its ergonomic design, including a comfortable handle and optimized balance, which significantly reduces operator strain during extended use.

Meanwhile, the Jonsered 670 is tailored for those who need a bit more power and capacity. It is versatile enough to handle medium-sized cutting tasks as well as heavy-duty use. This model is designed with advanced vibration dampening technology, minimizing vibrations transferred to the user's hands, thus enhancing comfort and precision. The 670 also incorporates the Easy Start system, which makes starting the saw simple, even after long periods of inactivity.

The Jonsered 630 stands at the higher end of this trio, aimed at professional users who demand peak performance. With an increased engine size and enhanced cutting speed, the 630 can tackle larger trees and tougher materials with ease. This model features a high-performance air filtration system that ensures the engine remains clean and runs efficiently. Additionally, the 630 incorporates a centrifugal air cleaning system that prolongs service intervals and reduces maintenance needs.

All three models come equipped with cutting-edge technologies such as the X-Torq engine, which lowers fuel consumption and exhaust emissions, making them environmentally friendly options in today's market. These chainsaws incorporate safety features like chain brakes and low kickback chains, ensuring user safety during operation.

In summary, the Jonsered 625, 670, and 630 chainsaws each offer distinct advantages catering to various user needs, from homeowners tackling light-duty tasks to professionals requiring robust, high-performance machinery. The blend of technology, ergonomic design, and safety ensures that Jonsered continues to be a trusted name in outdoor power equipment. These chainsaws not only deliver superior cutting performance but also provide a seamless user experience.