Husqvarna 445 EPA II, 445e EPA II, 450e EPA II manual Felling, Directional cuts

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WORKING TECHNIQUES

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.

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anger

zone

 

 

direction

 

 

Felling

 

 

 

 

 

 

 

 

 

Retreat path

 

 

 

 

 

 

 

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Danger

zone

path

anger

zone

 

 

 

 

 

 

Retreat

 

 

 

 

 

 

 

Felling

WARNING! Unless you have special training

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

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 cut you begin with the top cut. Aim using to the saw’s felling direction mark (1) toward a goal further forward in the terrain, where you would like the tree to fall (2). Stand on the right-hand side of the tree, behind the saw, and cut with a 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 1.5-2 inches (3-5 cm) above the bottom directional cut.

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 instructions under the heading 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.

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Contents EPA II 445e EPA 450e EPA EnglishSymbols in the operator’s manual KEY to SymbolsSymbols on the machine Contents Introduction Dear customerWhat is WHAT? What is what on the chain saw?Always use common sense General Safety PrecautionsBefore using a new chain saw Chain brake and front hand guard Machine′s safety equipmentPersonal protective equipment General Safety Precautions Right hand guard Throttle lockoutChain catcher Vibration damping systemMuffler Stop switchCutting equipment General rulesSharpening your chain and adjusting depth gauge setting Cutting equipment designed to reduce kickbackGeneral advice on adjusting depth gauge setting Sharpening cutting teeth445 Adjustment of depth gauge settingTensioning the chain 445e, 450eFilling with chain oil Lubricating cutting equipmentChain oil Checking chain lubricationChecking wear on cutting equipment Chain drive sprocketNeedle bearing lubrication 445 AssemblyFitting the bar and chain 445e, 450eAssembly Fuel Handling FuelTransport and storage Fuel safetyFueling Long-term storageCold engine Starting and StoppingStarting and stopping Warm engineStopping Before use Basic safety rulesWorking Techniques General working instructionsGeneral rules Terms Basic cutting techniqueGeneral LimbingFelling direction Tree felling techniqueSafe distance Clearing the trunk and preparing your retreatFelling Directional cutsFreeing a tree that has fallen badly How to avoid kickbackWhat is kickback? Cutting the trunk into logs General MaintenanceCarburetor adjustment Checking the inertia brake release Checking the brake triggerMuffler Tensioning the recoil spring StarterReplacing the starter cord Replacing the return and drive springsLubricating the bar tip sprocket Air filterSpark plug Needle bearing lubricationCooling system Air Injection centrifugal cleaningTemperature -5C 23F or colder Winter useMaintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations Saw chain filing and file gaugesFederal Emission Control Warranty Statement Your Warranty Rights and ObligationsKickback safety precautions American Standard Safety PrecautionsSafety precautions for chain saw users Other safety precautions1150341-95 ´z+RB3¶55¨ ´z+RB3¶55¨

445 EPA II, 445e EPA II, 450e EPA II specifications

Husqvarna is a name synonymous with power and durability, especially when it comes to its line of chainsaws like the Husqvarna 445 EPA II, 445e EPA II, and 450e EPA II. These models combine advanced technology and ergonomic design to fulfill the needs of both professional users and homeowners.

The Husqvarna 445 EPA II chainsaw is designed for versatility and ease of use. It boasts a 45.7cc engine, providing a balance of power and weight ideal for various cutting tasks. The chainsaw features Husqvarna’s X-Torq engine technology, which reduces emissions and improves fuel efficiency. This means less downtime for refueling and a smaller ecological footprint, making it environmentally friendly. Additionally, the LowVib system minimizes vibration, which translates to reduced user fatigue over long periods of use.

The 445e EPA II takes similar principles and enhances them with increased efficiency and usability. This model includes the Air Injection system, which helps filter out larger dust and debris particles before reaching the air filter, ensuring consistent performance and a longer lifespan for the machine. Its lightweight design makes it easier to maneuver while the front handle is ergonomically shaped for a secure grip. The easy-start feature allows users to get going quickly with minimal effort.

Moving up the line, the Husqvarna 450e EPA II offers more power, featuring a slightly larger engine and an improved cutting capacity. This model is perfect for heavy-duty tasks, from felling trees to cutting firewood. Like its predecessors, it employs X-Torq engine technology and also includes the Quick Release Air Filter, making maintenance easier and faster. The robust design and advanced security features—such as the inertia-activated chain brake—ensure safe operation even under challenging conditions.

Overall, the Husqvarna 445 EPA II, 445e EPA II, and 450e EPA II chainsaws represent a commitment to safety, efficiency, and user comfort. The integration of modern technological features, coupled with Husqvarna's reputation for quality workmanship, makes these chainsaws ideal choices for anyone looking to tackle a range of outdoor cutting applications with confidence.
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