Jonsered CS 2150 EPA I Clearing the trunk and preparing your retreat, Felling, Directional cuts

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SAFETY INSTRUCTIONS

•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.

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 away from the intended felling direction.

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.

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 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.

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Contents EPA Key to symbols KEY to SymbolsContents EPA Before using a new chain sawSafety Instructions Machine′s safety equipmentPersonal protective equipment Chain brake and front hand guard Throttle lock Stop switchChain catcher Right hand guardChecking brake band wear MufflerChecking the front hand guard Checking the inertia brake releaseThrottle lock Stop switchChain catcher Right hand guardGeneral rules Cutting equipmentCutting equipment designed to minimise kickback BarSome terms that describe the bar and chain Sharpening your chain and adjusting raker clearanceGeneral information on sharpening cutting teeth With a badly sharpened chainSharpening cutting teeth General advice on setting raker clearanceTensioning the chain Setting the raker clearanceLubricating cutting equipment Chain oilChecking chain lubrication Filling with chain oilLubricating the bar tip sprocket Needle bearing lubricationHow to avoid kickback What is kickback?Chain drive sprocket Do not let go of the handles Starting General safety precautionsBasic safety rules Fuel safetyGeneral working instructions Transport and storageGeneral Basic cutting techniqueTerms CuttingLimbing Tree felling techniqueSafe distance Felling directionFelling Clearing the trunk and preparing your retreatDirectional cuts Felling cutFreeing a tree that has fallen badly General adviceCutting the trunk into logs Freeing a trapped treeWhat is what on the chain saw? What is WHAT?Fitting the bar and chain AssemblyFuel Handling FuelChain oil Fuelling Starting and stopping Starting and StoppingCold engine Warm engineCarburettor MaintenanceStarter Correctly adjusted carburettorChanging a broken or worn starter cord Tensioning the recoil springSpark plug Air filterMuffler Fitting the starterCentrifugal cleaning Turbo Adjustment of the oil pumpWhen making adjustments Needle bearing lubricationTemperature 0 C 32 F or colder Daily maintenanceTemperature -5C 23 F or colder Below you will find some general maintenance instructionsMonthly maintenance Weekly maintenanceTechnical data Technical Data050/1,3 mm Bar Chain Length Pitch, inch Max nose radius Inches058/1,5mm 063/1,6 mmYour Warranty Rights and Obligations Federal Emission Control Warranty Statement1088895-95

CS 2141 EPA II, CS 2145 EPA II, CS 2150 EPA I specifications

The Jonsered CS 2150 EPA I, CS 2145 EPA II, and CS 2141 EPA II are premium chainsaws engineered for both professional users and serious enthusiasts. These models exemplify Jonsered's commitment to power, efficiency, and user-friendly design, making them ideal for a variety of cutting tasks, from felling trees to trimming branches.

The Jonsered CS 2150 EPA I is a robust chainsaw that offers a powerful engine combined with advanced features. It boasts a 50.2 cc engine that delivers exceptional cutting performance while adhering to strict EPA emissions standards. The chainsaw is equipped with the X-Torq engine technology, which significantly reduces fuel consumption and emissions, enabling users to work longer while minimizing environmental impact. Additionally, the CS 2150 features a high chain speed of 22.3 m/s, allowing for swift and clean cuts.

The CS 2145 EPA II further enhances performance with its lightweight design, making it easy to maneuver for prolonged use without fatigue. Powered by a 45.7 cc engine, it combines efficiency with raw power, providing reliable performance for both professionals and homeowners. The inclusion of an easy-start system means that users can start the saw with minimal effort, which is especially advantageous during colder weather or when working in challenging environments. Its validated safety features, including a chain brake and low kickback bar, ensure user protection during operation.

The CS 2141 EPA II offers a perfect balance of power and manageability. With a smaller 40.9 cc engine, it is particularly suited for users looking for an efficient saw that doesn't compromise on performance. The lightweight design allows for easy handling, particularly in dense and difficult terrain. Like the other models, it utilizes the X-Torq engine technology, which ensures reduced emissions and optimal fuel efficiency. Its precise design and ergonomic handle make it comfortable for extended periods of use, catering to both professional loggers and landscape maintenance users.

Each of these models shares characteristics such as an efficient air filtration system, which prolongs engine life by keeping dirt and debris out. In addition, they are designed with vibrations dampening technology, reducing fatigue for the user. The easy access to the filter and spark plug simplifies maintenance, ensuring the chainsaws remain in peak condition.

In conclusion, the Jonsered CS 2150 EPA I, CS 2145 EPA II, and CS 2141 EPA II represent a solid lineup of chainsaws that combine power, efficiency, and safety. With advanced technologies and thoughtful design, they cater to a wide range of cutting needs, making them indispensable tools for anyone serious about their work in forestry, landscaping, or yard maintenance.
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