Makita DCS 330 TH instruction manual Kickback, Reactive forces during the cut, including kickback

Page 9

9

In order to keep control of your saw, always maintain a firm foothold. Never work on a ladder, in a tree or on any other insecure support. Never use the saw above shoulder height (fig. 9).

10

Position the chain saw in such a way that your body is clear of the cutting attachment whenever the engine is running (fig. 10).

Don’t put pressure on the saw when reaching the end of a cut. The pressure may cause the bar and rotating chain to pop out of the cut or kerf, go out of control and strike the operator or some other object. If the rotating chain strikes some other object a reactive force (see pages 10 to 12 ) may cause the chain to strike the operator.

Reactive forces during the cut, including kickback

WARNING!

Reactive forces, that may occur during any cut are kickback, pushback and pull-in. Reactive forces can be dangerous! In any chain saw, the powerful force used to cut wood can be reversed (and work against the operator).

If the rotating chain is suddenly stopped by contact with any solid object like a log or branch or is pinched, the reactive forces instantly occur. These reactive forces may result in loss of control which may, in turn, cause serious or fatal injury. An understanding of the causes of these reactive forces may help you avoid loss of control.

The most common reactive forces are

-kickback,

-pushback,

-pull-in.

11

Kickback:

Kickback occurs when the upper quadrant of the bar nose contacts a solid object in the wood or is pinched (fig. 11). The reaction of the cutting force of the chain causes a rotational force of the chain saw in the direc tion opposite to the chain movement, mainly in the plane of the bar. This may fling the bar in an uncontrolled arc towards the operator.

12

This reaction can occur in a fraction of a second and under some circumstances, cause the guide bar and chain to strike the operator with enough force to cause severe or fatal injury. It may also occur during limbing. It also occurs when the nose of the guide bar is pinched unexpectedly, unintentionally contacts solid material in the wood (fig.12) or is incorrectly used to begin a plunge or boring cut.

The greater the force of the kickback reaction, the more difficult it becomes for the operator to control the saw.

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Contents Owner’s Safety Manual Makita DCS 330 TH ContentsSymbols Case one of the parts listed should not be includedEngine stop switch Delivery inventoryAdditional safety precautions Safety precautions for chain saw operatorsGeneral Safety Precautions OperatorPhysical Condition Saw Proper clothingUse of the saw Transporting the chain sawFeet Chain saw operating instructionsFueling Fueling instructionsImportant adjustments Working conditionsCutting instructions Reactive forces during the cut, including kickback KickbackTo avoid kickback Saw chain cutter sharpnessSpeed of contact at which the cutter contacts the object Depth gaugesPushback Cutting techniquesTo avoid pushback To avoid pull-in= cutting down area Felling instructionsSectioning Method Plunge-Cut MethodBucking LimbingMaintaining and storing the saw Maintenance and RepairDenomination of components Approved bar and chain combinations Technical data DCS 330 THMounting the guide bar and saw chain StopTightening the saw chain Checking the chain tension Chain brakeEngaging the chain brake braking Releasing the chain brakeChain oil FuelFuel mixture Correct mixture ratioWaste oil Clean screw cap and tank after refuellingRefuelling Important note on bio-degradable chain oilsChecking the chain lubrication Adjusting the chain lubricationCold start Starting the engineWarm start Stopping the engineChecking the chain brake Adjusting the carburetorImportant information Set idle speed stepSharpening the saw chain Stop 65 mm 025Min Files and how to work with them Cleaning the guide bar, lubricating the sprocket nose Cleaning the brake band and sprocket interiorCleaning the air filter Stop Replacing the saw chainReplacing the suction head Replacing the starter cable Replacing the spark plugElectrode gap Checking the ignition sparkCleaning the muffler / spark arrester screen Cleaning the cylinder spaceReplacing the return spring Instructions for daily and periodic maintenance Service, spare parts and guaranteeMaintenance and repair Guarantee TroubleshootingSpare parts Malfunction System Observation CauseDCS 330 TH Extract from the spare parts listFor your notes Ce produit est en conformité avec SommaireSymboles Etendue de la fournitureSi un des composants indiqués ici ne devait pas être Mesures de sé curité supplé mentaires Mesures gé né rales de sé curité ’utilisateurCondition physique La tronç onneuse Quels vê tements porter?Utilisation de la tronç onneuse Transport de la tronç onneuseRavitaillement en carburant Instructions de ravitaillementDé marrage Ré glages importants Conditions de travailInstructions de coupe Choc de recul Kickback Affû tage des plaquettes de coupe de la chaîne Pour é viter le choc de reculLes limiteurs de profondeurs Le recul Techniques de coupePour é viter le recul Pour é viter la traction= zone d’abattage Instructions d’abattageMé thode de coupe en plongé e Mé thode de sectionnementDé bitage EbranchageEntretien et stockage de la tronç onneuse Entretien et ré parationLevier de gaz Bouton de blocage pour mi-gaz Dé signation des piè cesCombinaisons autorisé es de guides et de chaînes Caracté ristiques techniques DCS 330 THMontage du rail-guide et de la chaîne de sciage Mise EN RouteRemarque Tendre la chaîne de sciageContrô le de la tension de la chaîne Frein de chaîneEnclencher le frein de chaîne bloquer Libé rer le frein à mainHuile de chaîne de sciage CarburantsMé lange carburant Ré alisation du rapport correct du mé langeHuile Usagé e Remplissage des ré servoirsRemarque importante pour les huiles de chaîne De sciage bio Vé rifier le graissage de la chaîne Ré glage du graissage de la chaîneEffectuer que si le moteur est arrê té ! Stop RemarqueDé marrage à froid Dé marrer le moteurDé marrage à chaud Arrê ter le moteurRé glage du carburateur Vé rifier le frein de chaîneInformation importante Ré glage du ralenti marche à vide point65 mm Affû tage de la chaîne De sciageLime et guidage de la lime Nettoyer le guide-chaîne Regraisser l’é toile de dé viation Nouvelle chaîne de sciage Remplacement de la cré pine d’aspirationNettoyage du filtre d’air Stop Ne pas nettoyer le filtre à air à l’essenceRemplacement du cordon de lancement Remplacement de bougieEcartement des é lectrodes Vé rification de l’é tincelle d’allumageNettoyer le silencieux / du pare-é tincelles Remplacement du ressort de rappelNettoyer l’inté rieur du cylindre Risque de blesssure! Un ressort cassé peut sauterService d’atelier, piè ces de rechange et garantie Indications de maintenance et d’entretien pé riodiquesMaintenance et ré parations Garantie Piè ces de rechangeRecherche de pannes Panne Systè me Observation OrigineExtrait de la liste des piè ces de rechange Notas USA Makita U.S.A., Inc Makita Canada Inc

DCS 330 TH specifications

The Makita DCS 330 TH is a powerful and versatile chainsaw designed for professional users who demand high performance and reliability in their tools. This model is particularly favored for its exceptional cutting capabilities, making it an ideal choice for both forestry applications and general landscaping tasks.

One of the standout features of the Makita DCS 330 TH is its robust 32.2 cc 2-stroke engine, which delivers impressive power for cutting through various types of wood. With an engine speed of up to 12,000 RPM, this chainsaw can tackle thick branches and logs with ease, allowing the user to complete their tasks efficiently. The combination of power and lightweight design ensures that users can handle the saw comfortably for extended periods without excessive fatigue.

The chainsaw is equipped with a 12-inch guide bar, which enables precise cutting while maintaining a manageable size for various applications. This length strikes an optimal balance between maneuverability and cutting depth, making the DCS 330 TH an excellent choice for both pruning and felling small to medium-sized trees.

The Makita DCS 330 TH also incorporates advanced technologies that enhance its performance and user experience. One of these technologies is the automatic oil pump, which ensures that the chain is adequately lubricated during operation. This feature not only prolongs the life of the chain and bar but also enhances cutting efficiency and safety.

User comfort is further prioritized through the inclusion of an anti-vibration system that minimizes the impact of vibration during operation. This system significantly reduces user fatigue and allows for more precise control, making it easier to perform detailed cutting tasks.

Safety features are also a prominent aspect of the Makita DCS 330 TH. The chainsaw is designed with a chain brake system that quickly halts the chain in case of kickback, providing an additional layer of protection for the operator. Additionally, the tool's throttle lock ensures that the saw remains stable during operation, preventing accidental starts.

In summary, the Makita DCS 330 TH is a highly capable chainsaw that combines power, comfort, and safety features into one reliable package. Its lightweight design, advanced technologies, and user-friendly characteristics make it an excellent choice for anyone looking to invest in a quality chainsaw for demanding applications.
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