Dolmar MS-251.4, MS-250.4 Method of operation, Kickback prevention, Cutting Tools

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Method of operation

Only use the Brush cutter/String trimmer in good light and visibility. During the winter season beware of slippery or wet areas, ice and snow (risk of slipping). Always ensure a safe footing.

Never cut above waist height.

Never stand on a ladder and run the Brush cutter/String trimmer.

Never climb up into trees to perform cutting operation with the Brush cutter/ String trimmer.

Never work on unstable surfaces.

Remove sand, stones, nails etc. found within the working range. Foreign particles may damage the cutting tool and can cause dangerous kick-backs.

Before commencing cutting, the cutting tool must have reached full working speed.

Kickback

When operating the brush cutter, uncontrolled kickback may occur.

This is particularly the case when attempting to cut within a blade segment between 12 and 2 o’clock.

Never apply the brush cutter within a segment between 12 and 2 o’clock.

Never apply this segment of the brush cutter blade to solids, such as bushes and trees, etc., having a diameter in excess of 3 cm or the brush cutter will be deflected at great force with the risk of injuries.

Kickback prevention

To avoid kickbacks, observe the following:

Operation within a blade segment between 12 and 2 o’clock presents positive hazards, especially when using metal cutting tools.

Cutting operations within a blade segment between 11 and 12 o’clock, and between 2 and 5 o’clock, must only be performed by trained and experienced operators, and then only at their own risk.

Easy cutting with almost no kickback is possible within a blade segment between 8 and 11 o’clock.

Cutting Tools

Employ only the correct cutting tool for the job in hand.

MS-250.4, MS-251.4 with cutter blade (Star Blade (4 teeth), Eddy Blade (8 teeth)), Nylon cutting head

For cutting thick materials, such as weed, high grass, bushes, shrubs, underwood, thicket etc. (max. 2 cm dia. thickness). Perform this cutting work by swinging the brush cutter evenly in half-circles from right to left (similar to using a scythe).

Maintenance instructions

The condition of the cutter, in particular of the cutting tool of the protective devices and also of the shoulder strap must be checked before commencing work. Particular attention is to be paid to the cutting blades which must be correctly sharpened.

Turn off the engine and remove spark plug connector when replacing or sharpening cutting tools, and also when cleaning the cutter or cutting tool.

Caution:

Kickback

Diagrammatic flgure

Diagrammatic flgure

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Contents MS-250.4MS-251.4 Symbols General Instructions Safety InstructionsIntended use of the machine Personal protective equipmentRefuelling Method of operation Maintenance instructionsKickback Kickback preventionNever straighten or weld damaged cutting tools When asking for help, please give the following informationFirst Aid PackagingMS-251.4 MS-250.4 Model Technical Data MS-250.4, MS-251.4MS-250.4 Brush Cutter MS-251.4 String trimmer Designation of PartsFor machines with Loop Handle Mounting of HandleFor machines with U Handle models Mounting of Protector Mounting of nylon cutting head Mounting of Cutter Blade or Nylon Cutter HeadFor MS-250.4 with the hex wrench still in place Inspection and Refill of Engine Oil Point 1 in Replacement of Oil Oil GaugeBefore Start of Operation Storageof Machineand Refilltank RefuelingStarting Points in Operation and HOW to StopCorrect Handling of Machine Open For machine with U Handle or Loop HandleResharpening the Cutting Tool Adjustment of LOW-SPEED Rotation IdlingStopping Startup after warm-up operationReplacing the nylon cord Nylon Cutting HeadOperation Servicing Instructions Replacement of Engine OILDaily checkup and maintenance Points on OIL Cleaning of AIR CleanerPoints in Handling Air Cleaner Element Replacement of Fuel Pipe Cleaning of Fuel FilterCleaning of Parts Replacement of Gaskets and PackingsStorage Fault locationOperating time Troubleshooting Emission Compliance Period Owners Warranty Responsibilities Manufacturers Warranty CoverageWhat is not Covered What is CoveredHOW to File a Claim Waranty Commencement DateMaintenance Statements Where to GET Warranty ServiceParts Covered Under the California Emission Warranty Repair and Replacement of EMISSION-RELATED Parts Parts Covered Emission Component Defect Warranty PeriodObtaining Warranty Service HOW to Make a Claim Dolmar SymbolesInstructions générales Consignes DE SécuritéUtilisation spéciale de la machine Équipement personnel de protectionMètres RavitaillementMéthode dutilisation Instructions de maintenanceEffet de retour Outils de coupeEmballage Premier secoursMS-251.4 MS-250.4 Modèle Caracteristiques Techniques MS-250.4, MS-251.4Nomenclature DES Pièces MS-250.4 Débroussailleuses MS-251.4 Taille-borduressMachines à poignée simple Montage DE LA PoignéePour les modèles à polgnée en U Pour MS-250.4 Montage DU Dispositif DE ProtectionPour MS-250.4, MS-251.4 Utilisation du protecteur pour lame métallique/lame à filMontage du dispositif de coupe à fil Montage DE LA Lame DE Coupe OU DE LA Téte DE Coupe À FILPour MS-250.4 avec clé hexgonale étant toujours en place Controle ET Ravitaillement DE L’HUILE Moteur Avant Mise EN MarcheEntrepôsage DE L’APPAREIL ET DU Réservoir DE Ravitallement RavitaillementConsignes DE Mise EN Marche ET Arrêt DE LA Machine Manipulation Correcte DE LA MachineFixation du harnais RetraitFermer Pour les machines à poignée en U ou en BoucleOuvrir Consignes de sécurité lors du fonctionnementVerification DE LA Rotation a Petite Vitesse Réaffûtage DE Loutil DE CoupeReglage DE LA Marche a Petite Vitesse AU Ralenti Tête de coupe à fil en nylon Instructions Relatives AUX Réparations Remplacement DE L’HUILE a MoteurContrôle et opérations de maintenance réguliers Essentiels Pour L’HUILE Nettoyage DU Filtre À AIRRemplacement DES Joints ET Garnitures Remplacement DU Tuyau a CarburantContôle DE LA Bougie Dallumage Graissage DU Carter D’ENGRENAGELocalisation des défauts RemisageDurée de marche Depannage Lista de contenidos Página SímbolosInstrucciones generales Instrucciones DE SeguridadEquipo Personal de Protección Puesta en Marcha de la Desbrozadora/CortabordesReabastecimiento Contragolpe Método de trabajoHerramientas de Corte Cabezal de NylonEmbalaje Nunca rectificar o soldar las herramientas de corte dañadasPrimeros Auxilios Datos Técnicos MS-250.4, MS-251.41 Cortabordes Denominación DE PartesPara máquinas con manillar cerrado Montaje DEL ManillarPara máquinas con manillar en U USO DE Protector Parahojas METALICAS/CORTADOR DE Cuerda Montaje DEL ProtectorMontaje de la cabeza de corte de nylon Montaje DE LA Hoja DE Corte O Cabezal DE Corte DE NylonPunto 1 de reabastecimiento de aceite bayoneta de aceite Antes DE Empezar EL TrabajoInspeccióny Reabastecimientode Aceitedemotor Almacenaje DE Lamáquinay DEL Tanque DE Reabastecimiento Reabastecimiento DE CombustibleArranque USO Correcto DE LA MáquinaPuntos Relacionados CON EL Manejo Y LA Parada Precauciones durante la operación Máquina con manillar U ó cerradoAjuste DEL Giro a Baja Velocidad Ralentí Afilar LA Herramienta DE CorteArrancar después de la operación de calentamiento CuidadoSustitución del cabezal de Nylon CabezaldenylonOperación Comprobación y mantenimiento diarios Instrucciones DE ServicioCambio DEL Aceite DEL Motor Manipulación del elemento del filtro de aire Limpieza DEL Depurador DE AirePuntos Relacionados Conel Aceite Suministro DE Grasa a LA Caja DE Engranajes Comprobación DE LA BujíaLimpieza DEL Filtro DE Combustible Cambio DEL Tubo DE CombustibleLocalizacion de averias AlmacenamientoAtención después de almacenamiento de largo tirmpo Tiempo de Iinvestigación DE Averías Dolmar GmbH Postfach 70 04 Hamburg Germany