Husqvarna CARB III manual Basic cutting technique, Terms

Page 26

WORKING TECHNIQUES

user. If the saw chain is jamming, the saw may be pushed back at you.

8Unless the user resists this pushing force there is a risk that the chain saw will move so far backwards that only the kickback zone of the bar is in contact with the tree, which can lead to a kickback.

Cutting with the bottom edge of the bar, i.e. from the top of the object downwards, is known as cutting with a 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.

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

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

4Is there a risk of kickback?

5Do 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.

26 – English

115 13 80-96 Rev.3 2008-12-17

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Contents 435 435e 440e Symbols in the operator’s manual KEY to SymbolsSymbols on the machine You will find the following labels on your chain saw EPAContents Introduction Dear customerWhat is WHAT? What is what on the chain saw?General Safety Precautions Before using a new chain sawPersonal protective equipment Machine′s safety equipmentAlways use common sense Chain brake and front hand guardGeneral Safety Precautions Right hand guard Throttle lockoutChain catcher Vibration damping system Stop switchCutting equipment MufflerBar General rulesCutting equipment designed to reduce kickback ChainSharpening your chain and adjusting depth gauge setting General information on sharpening cutting teethTensioning the chain 435 435e, 440eFilling with chain oil Lubricating cutting equipmentWhich could lead to serious, even fatal injuries Chain oil Checking chain lubricationChecking wear on cutting equipment Chain drive sprocketNeedle bearing lubrication 435 AssemblyFitting the bar and chain 435e, 440eAssembly Fuel Handling FuelTransport and storage Fuel safetyFueling Long-term storageStarting Starting and StoppingStarting and stopping Cold engineStopping Before use Basic safety rulesWorking Techniques General working instructionsGeneral rules Basic cutting technique TermsLog is supported at one end. There is a high risk Tree felling techniqueLimbing Safe distanceDirectional cuts Felling directionClearing the trunk and preparing your retreat Felling cut Freeing 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 ImmediatelyMuffler Tensioning the recoil spring StarterReplacing the starter cord Fitting the starter Air filterReplacing the return and drive springs Needle bearing lubrication Spark plugLubricating the bar tip sprocket Cooling systemWinter use Air Injection centrifugal cleaningTemperature -5C 23F or colder Maintenance schedule Daily maintenance Weekly maintenance Monthly maintenanceTechnical Data Technical dataBar and chain combinations Saw chain filing and file gaugesYour Warranty Rights and Obligations Emission Warranty Parts List Kickback safety precautions American Standard Safety PrecautionsSafety precautions for chain saw users Other safety precautionsSímbolos en el manual de instrucciones Aclaracion DE LOS SimbolosSímbolos en la máquina Etiquetas que se encuentran en la motosierra Precauciones de seguridad para usuarios de IndiceÍndice Introduccion Apreciado cliente¿QUE ES QUE? ¿Qué es qué en la motosierra?Importante Instrucciones Generales DE SeguridadMedidas a tomar antes de utilizar una motosierra nueva Equipo de seguridad de la máquina Emplee siempre el sentido comúnEquipo de protección personal Freno de cadena con protección contra reculadas«TIRAR Hacia Atrás Para REINICIAR» Protección de la mano derecha Fiador del aceleradorCaptor de cadena Botón de parada Equipo de corteSistema amortiguador de vibraciones SilenciadorEspada Reglas básicasEquipo de corte reductor de reculadas CadenaGeneralidades sobre el afilado de los dientes cortantes Generalidades sobre el ajuste de la profundidad de corte Tensado de la cadenaAfilado de dientes cortantes 435 Control de la lubricación de la cadena Lubricación del equipo de corteRepostaje de aceite para cadena de motosierra Control del desgaste del equipo de corte Piñón de arrastre de la cadenaLubricación del cojinete de agujas ¡ATENCION! La mayoría de los¡ATENCION! Para manipular la cadena MontajeMontaje de la espada y la cadena Deben utilizarse guantes protectoresMontaje del apoyo de corteza Manipulacion DEL Combustible CarburanteTransporte y almacenamiento RepostajeSeguridad en el uso del combustible Almacenamiento prolongadoArranque Arranque Y ParadaArranque y parada ¡ATENCION! Antes de arrancar, observe Lo siguienteParada Instrucciones generales de trabajo Tecnica DE TrabajoAntes de utilizar la máquina Reglas básicas de seguridadReglas básicas Técnica básica de corte DesignacionesDistancia de seguridad Técnica de talaDesramado Corte de indicación Dirección de derriboCorte de ramas bajas y camino de retirada Corte de derribo ¿Qué es la reculada? Medidas preventivas de las reculadasTratamiento de una tala fallida Tronzado del tronco Ajuste del carburador MantenimientoGeneralidades Control de la función de inercia Detenerse inmediatamenteSilenciador Tensado del muelle de retorno Mecanismo de arranqueCambio del cordón de arranque Montaje del mecanismo de arranque Filtro de aireCambio del muelle de retorno y el muelle de arrastre Lubricación del cojinete de agujas BujíaEngrase del cabezal de rueda de la espada Sistema refrigeranteTemperaturas de -5C 23F o inferiores Depuración centrífuga Air InjectionUtilización en invierno Programa de mantenimiento Datos Tecnicos Datos técnicosCombinaciones de espada y cadena Afilado y calibres de afilado de la cadena de sierraSUS Derechos Y Obligaciones DE Garantia Lista DE Piezas DE LA Garantía DE Emisiones Precauciones de seguridad en reculadas Precauciones DE Seguridad DE LA Norma AmericanaPrecauciones de seguridad para usuarios de motosierras Otras precauciones de seguridad115 13 80-96 Rev.3 115 13 80-96 Rev.3 ´z+SF¶6¢¨ ´z+SF¶6¢¨ 115 13 80-96 Rev.3 1151380-96