Husqvarna 235, 240 manuel dutilisation Basic cutting technique, Tree felling technique

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WORKING TECHNIQUES

pulling chain. In this case the chain saw pulls itself towards the tree and the front edge of the chain saw body rests naturally on the trunk when cutting. Cutting with a pulling chain gives the operator better control over the chain saw and the position of the kickback zone.

9Follow the instructions on sharpening and maintaining your bar and chain.When you replace the bar and chain use only combinations that are recommended by us.

See instructions under the headings Cutting equipment and Technical data.

Basic cutting technique

WARNING! Never use a chain saw by

! holding it with one hand. A chain saw is not safely controlled with one hand. Always have a secure, firm grip around the handles with both hands.

General

•Always use full throttle when cutting!

•Reduce the speed to idle after every cut (running the engine for too long at full throttle without any load, i.e. without any resistance from the chain during cutting, can lead to serious engine damage).

•Cutting from above = Cutting with a pulling chain.

•Cutting from below = Cutting with pushing chain. Cutting with a pushing chain increases the risk of kickback. See instructions under the heading How to avoid kickback.

Terms

Cutting = General term for cutting through wood. Limbing = Cutting branches off a felled tree. Splitting = When the object you are cutting breaks off before the cut is complete.

There are five important factors you should consider before making a cut:

1Make sure the cutting equipment will not jam in the cut.

2 Make sure the object you are cutting will not split.

3 Make sure the chain will not strike the ground or any other object during or after cutting.

4 Is there a risk of kickback?

5 Do the conditions and surrounding terrain affect how safely you can stand and move about?

Two factors decide whether the chain will jam or the object that you are cutting will split: the first is how the object is supported before and after cutting, and the second is whether it is in tension.

In most cases you can avoid these problems by cutting in two stages; from the top and from the bottom. You need to support the object so that it will not trap the chain or split during cutting.

IMPORTANT! If the chain jams in the cut: stop the engine! Don’t try to pull the chain saw free. If you do you may be injured by the chain when the chain saw suddenly breaks free. Use a lever to open up the cut and free the chain saw.

The following instructions describe how to handle the common situations you are likely to encounter when using a chain saw.

Limbing

When limbing thick branches you should use the same approach as for cutting.

Cut difficult branches piece by piece.

Cutting

WARNING! Never attempt to cut logs

! while they are in a pile or when a couple of logs are lying together. Such procedures drastically increase the risk of kickback which can result in a serious or fatal injury.

If you have a pile of logs, each log you attempt to cut should be removed from the pile, placed on a saw horse or runners and cut individually.

Remove the cut pieces from the cutting area. By leaving them in the cutting area, you increase the risk for inadvertently getting a kickback, as well as increasing the risk of losing your balance while working.

The log is lying on the ground. There is little risk of the chain jamming or the object splitting. However there is a risk that the chain will touch the ground when you finish the cut.

Cut all the way through the log from above. Avoid letting the chain touch the ground as you finish the cut. Maintain full throttle but be prepared for what might happen. (37)

If it is possible (can you turn the log?) stop cutting about 2/ 3 of the way through the log.

Turn the log and finish the cut from the opposite side. The log is supported at one end. There is a high risk that it will split.

Start by cutting from below (about 1/3 of the way through). Finish by cutting from above so that the two cuts meet. The log is supported at both ends. There is a high risk that the chain will jam.

Start by cutting from above (about 1/3 of the way through). Finish by cutting from below so that the two cuts meet.

Tree felling technique

IMPORTANT! It takes a lot of experience to fell a tree. Inexperienced users of chain saws should not fell trees. Do not attempt any task beyond your experience level!

Safe distance

The safe distance between a tree that is to be felled and anyone else working nearby is at least 2 1/2 tree lengths. Make sure that no-one else is in this ”risk zone” before or during felling. (38)

Felling direction

The aim is to fell the tree in a position where you can limb and cross-cut the log as easily as possible. You want it to fall in a location where you can stand and move about safely.

Once you have decided which way you want the tree to fall you must judge which way the tree would fall naturally.

Several factors affect this:

•Lean of the tree

•Bend

•Wind direction

5451546-93 Rev.4 2008-04-16

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Contents 235 5451546-93 Rev.4 OFF Half Full 49 a 5451546-93 Rev.4 Thank you for using a Husqvarna product Symbols on the machineIntroduction Dear customerWhat is what on the chain saw? Contents For Canada General Safety PrecautionsBefore using a new chain saw Always use common sense Machine′s safety equipmentPersonal protective equipment Chain brake and front hand guardCutting equipment General rules Sharpening your chain and adjusting depth gauge settingCutting equipment designed to reduce kickback BarLubricating cutting equipment Tensioning the chainHappen when the chain touches the operator General Safety Precautions / AssemblyFitting the bar and chain Chain drive sprocketFuel Handling Fuel safetyFuel FuelingStarting and stopping Fuel Handling / Starting and StoppingWorking Techniques Basic safety rulesBefore use General working instructionsTree felling technique Basic cutting techniqueFreeing a tree that has fallen badly How to avoid kickback Working Techniques / MaintenanceCarburetor adjustment GeneralMuffler MaintenanceAir filter Spark plugDaily maintenance Weekly maintenance Monthly maintenance Maintenance scheduleTechnical data Technical DataType Recommended cutting equipment for CanadaBar Chain Your Warranty Rights and Obligations Federal Emission Control Warranty StatementSafety precautions for chain saw users American Standard Safety PrecautionsKickback safety precautions Other safety precautionsNous vous remercions dutiliser un produit Husqvarna Symboles sur la machineCher client Mesures à prendre avant de mettre en usage une Quels sont les composants de la tronçonneuse?Sommaire Instructions Générales DE Sécurité Équipement de sécurité de la machine Utilisez toujours votre bon sensFrein de chaîne avec arceau protecteur AVERTISSEMENT! La plupart desCapteur de chaîne Blocage de l’accélérationProtection de la main droite Système anti-vibrationsRègles élémentaires Équipement de coupeÉquipement de coupe anti-rebond Affûtage et réglage de l’épaisseur du copeau de la chaîneLubrification de l’équipement de coupe Tension de la chaîneMontage du guide-chaîne et de la chaîne Instructions Générales DE Sécurité / MontajeRemplissage de carburant Manipulation DU CarburantCarburant Remisage prolongé Sécurité carburantTransport et rangement Démarrage et arrêt Démarrage ET ArrêtAvant chaque utilisation Techniques DE TravailMéthodes de travail Règles élémentaires de sécuritéAVERTISSEMENT! N’utilisez jamais une Technique de base pour la coupeGénéralités TerminologieTechniques d’abattage Solution à un abattage ratéQu’est-ce qu’un rebond? Mesures anti-rebondGénéralités EntretienRéglage du carburateur FonctionnementBougie SilencieuxFiltre à air Entretien hebdomadaireTous les Schéma d’entretienCaractéristiques techniques Caractéristiques TechniquesGuide-chaîne Chaîne Équipement DE Coupe Recommandé Pour CanadaVOS Droits ET Obligations EN Garantie Autres consignes de sécurité Précautions à prendre pour se protéger des rebondsAnsi B 175.1-2000 Annexe C AVERTISSEMENT! N’utilisez pas uneSímbolos en la máquina IntroducciónApreciado cliente ¿Qué es qué en la motosierra? Índice Medidas a tomar antes de utilizar una motosierra nueva Instrucciones Generales DE SeguridadImportante Emplee siempre el sentido comúnEquipo de seguridad de la máquina Equipo de protección personalFreno de cadena con protección contra reculadas ¡ATENCIÓN! La mayoría de losCaptor de cadena Fiador del aceleradorProtección de la mano derecha Sistema amortiguador de vibracionesReglas básicas Equipo de corteEquipo de corte reductor de reculadas EspadaRepostaje de aceite para cadena de motosierra Tensado de la cadenaLubricación del equipo de corte Montaje de la espada y la cadena Instrucciones Generales DE Seguridad / MontajeCarburante Manipulacion DEL CombustibleRepostaje Seguridad en el uso del combustibleArranque y parada Manipulacion DEL Combustible / Arrenque Y ParadaAntes de utilizar la máquina Técnica DE TrabajoReglas básicas de seguridad Corte con velocidad de cadena alta, acelerando al máxTécnica de tala Técnica básica de corteTratamiento de una tala fallida Ajuste del carburador MantenimientoGeneralidades Bujía SilenciadorFiltro de aire Programa de mantenimiento Datos técnicos Datos TecnicosEspada Cadena SUS Derechos Y Obligaciones DE Garantia Garantia DEL Sistema DE Control DE EmisionesPrecauciones de seguridad para usuarios de motosierras Precauciones DE Seguridad DE LA Norma AmericanaPrecauciones de seguridad en reculadas Otras precauciones de seguridad5451546-93 2008-04-16

235, 240 specifications

The Husqvarna 235 and 240 chainsaws are compact, lightweight power tools designed for homeowners and occasional users seeking reliability and performance. Known for their ease of use and versatility, both models are ideal for tasks such as pruning, cutting firewood, and clearing small trees.

One of the main features of the Husqvarna 235 and 240 is their X-Torq engine technology. This innovation reduces fuel consumption by up to 20% while also cutting emissions by approximately 75%. This not only makes the chainsaws environmentally friendly but also saves users on fuel costs over time. The engine's design also enhances torque, providing ample power for cutting through wood efficiently.

Both models come equipped with an inertia-activated chain brake, enhancing safety by preventing unwanted chain movement in case of a kickback. The chain brake is a critical feature for novice users, promoting confidence while operating the chainsaw. This focus on safety extends to the easy-to-reach throttle lockout and combined choke/stop control, allowing for simpler starting procedures.

The Husqvarna 235 and 240 feature an adjustable oil pump, which enables users to control the oil flow to the chain according to their specific needs. This functionality not only prolongs the life of the chain and bar but also helps maintain cutting performance, ensuring smoother operation and reduced wear.

These chainsaws also have ergonomic designs, with comfortable handles that minimize vibrations and allow for prolonged use without fatigue. The lightweight structure makes them easily maneuverable, which is particularly beneficial for tasks that require precision casing or reaching difficult areas.

Another noteworthy characteristic is the Tool-less chain tensioning system. This feature allows users to adjust the chain tension quickly and without the need for additional tools, simplifying maintenance and enhancing user experience.

Overall, the Husqvarna 235 and 240 chainsaws are excellent choices for homeowners seeking reliable, efficient, and easy-to-use tools for light to moderate cutting tasks. With advanced features like X-Torq technology, safety mechanisms, and user-friendly designs, they represent a valuable addition to any gardening or outdoor toolkit.
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