Makita EM4251CA Checking the Spark Plug, Supply of Grease to Gear Case, Cleaning of Fuel Filter

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CHECKING THE SPARK PLUG

–Only use the supplied universal wrench to remove or to install the spark plug.

–The gap between the two electrodes of the spark plug should be 0.7-0.8mm (0.028”-0.032”). If the gap is too wide or too narrow, adjust it. If the spark plug is clogged with carton or fouled, clean it thoroubhly or replace it.

CAUTION : Never touch the spark plug connector while the engine is running (danger of high voltage electric shock).

SUPPLY OF GREASE TO GEAR CASE

–Supply grease (Shell Alvania 2 or equivalent) to the gear case through the grease hole every 30 hours. (Genuine MAKITA grease may be purchased from your MAKITA dealer.)

CLEANING OF FUEL FILTER

WARNING: INFLAMMABLES STRICTLY PROHIBITED

Interval of Cleaning and Inspection: Monthly (every 50 operating hours)

Suction head in the fuel tank

–The fuel filler (1) of the suction head is used to filler the fuel required by the carburetor.

–A periodical visual inspection of the fuel filter is to be conducted. For that purpose open the tank cap, use a wire hook and pull out the suction head through the tank opening. Filters found to have hardened, been polluted or clogged up are to be replaced.

–Insufficient fuel supply can result in the admissible maximum speed being exceeded. It is therefore important to replace the fuel filter at least quarterly to ensure satisfactory fuel supply to the carburetor.

REPLACEMENT OF FUEL PIPE

CAUTION: INFLAMMABLES STRICTLY PROHIBITED

Interval of Cleaning and Inspection: Daily (every 10 operating hours)

Replacement: Annually (every 200 operating hours)

Replace the fuel pipe every year, regardless of operating frequency. Fuel leakage may lead to fire.

If any leakage is detected during inspection, replace the oil pipe immediately.

0.7mm-0.8mm (0.028”-0.032”)

Gear case

Grease hole

Fuel pipe

House clamp

Fuel filter(1)

Fuel pipe

INSPECTION OF BOLTS, NUTS AND SCREWS

–Retighten loose bolts, nuts, etc.

–Check for fuel and oil leakage.

–Replace damaged parts with new ones for safety operation.

CLEANING OF PARTS

–Keep the engine always clean.

–Keep the cylinder fins free of dust or dirt. Dust or dirt adhering to the fins will cause seizure.

REPLACEMENT OF GASKETS AND PACKINGS

In reassembling after the engine is dismounted, be sure to replace the gaskets and packings with new ones.

Any maintenance of adjustment work that is not included and described in this manual is only to be performed by Authorized Service Agents.

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Contents EM4250CA EM4251CA Symbols EnglishSafety Instructions General InstructionsIntended use of the machine Personal protective equipmentRefuelling Maintenance instructions Method of operationKickback Kickback preventionWhen asking for help, please give the following information Never straighten or weld damaged cutting toolsFirst Aid PackagingTechnical Data EM4250, EM4251 EM4251/EM4251CA EM4250/EM4250CA ModelDesignation of Parts EM4250/EM4250CA Brush Cutter EM4251/EM4251CA String trimmerFor machines with Loop Handle models Mounting of HandleFor machines with U Handle models Mounting of Protector Mounting of nylon cutting head Mounting of Cutter Blade or Nylon Cutter HeadFor EM4250/EM4250CA with the hex wrench still in place Inspection and Refill of Engine Oil Point 1 in Replacement of Oil Oil GaugeBefore Start of Operation Refueling Storageof Machineand RefilltankStarting Points in Operation and HOW to StopCorrect Handling of Machine For machine with U Handle or Loop Handle OpenAdjustment of LOW-SPEED Rotation Idling Resharpening the Cutting ToolStopping 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 Cleaning of Fuel Filter Replacement of Fuel PipeCleaning of Parts Replacement of Gaskets and PackingsFault location StorageOperating time Troubleshooting Emission Compliance Period MANUFACTURER’S Warranty Coverage Page Procedure Every 8 hours daily Every 8 hours dailyFederal Emission Component Defect Warranty Obtaining Warranty Service HOW to Make a Claim Symboles FrançaisConsignes DE Sécurité Instructions généralesUtilisation spéciale de la machine Équipement personnel de protectionRavitaillement MètresInstructions de maintenance Méthode dutilisationEffet de retour Outils de coupePremier secours EmballageCaracteristiques Techniques EM4250/EM4250CA, EM4251/EM4251CA Nomenclature DES Pièces Machines à poignée simple Montage DE LA PoignéePour les modèles à polgnée en U Montage DU Dispositif DE Protection Montage DE LA Lame DE Coupe OU DE LA Téte DE Coupe À FIL Montage du dispositif de coupe à filControle ET Ravitaillement DE L’HUILE Moteur Remplacement de l’huile Jauge d’huileAvant Mise EN Marche Ravitaillement ENTREPÔSAGEDEL’APPAREILET Duréservoir DE RavitallementManipulation Correcte DE LA Machine Consignes DE Mise EN Marche ET Arrêt DE LA MachineFixation du harnais RetraitPour les machines à poignée en U ou en Boucle Consignes de sécurité lors du fonctionnementRéaffûtage DE Loutil DE Coupe Reglage DE LA Marche a Petite Vitesse AU RalentiDémarrage après réchauffage Verification DE Larotationapetite VitesseFonctionnement Remplacement du fil en nylonTête de coupe à fil en nylon Instructions Relatives AUX Réparations Remplacement DE L’HUILE a MoteurContrôle et opérations de maintenance réguliers Nettoyage DU Filtre a AIR ESSENTIELSPOURL’HUILERemplacement DU Tuyau a Carburant Remplacement DES Joints ET GarnituresContôle DE LA Bougie Dallumage Graissage DU Carter D’ENGRENAGERemisage Localisation des défautsDurée de marche Depannage Simbolos Lista de contenidos PáginaInstrucciones DE Seguridad Instrucciones generalesUso intentado de la máquina Equipo Personal de ProtecciónReabastecimiento Método de trabajo ContragolpeHerramientas de Corte Cabezal de NylonEmbalaje Nunca rectificar o soldar las herramientas de corte dañadasPrimeros Auxilios Datos Técnicos EM4250/EM4250CA, EM4251/EM4251CA EM4251/EM4251CA EM4250/EM4250CA ModeloDenominación DE Partes EM4250/EM4250CA Desbrozadora EM4251/EM4251CA CortabordesPara máquinas con manillar cerrado Montaje DEL ManillarPara máquinas con manillar en U Montaje DEL Protector USO DE Protector Para Hojas METALICAS/CORTADOR DE CuerdaMontaje de la cabeza de corte de nylon Montaje DE LA Hoja DE Corte O Cabezal DE Corte DE NylonPara EM4250/EM4250CA con la llave hexagonal todavía puesuta Punto 1 de reabastecimiento de aceite bayoneta de aceite Antes DE Empezar EL TrabajoInspección Yreabastecimientode Aceitedemotor Reabastecimiento DE Combustible Almacenaje DE Lamáquinay DEL Tanque DE ReabastecimientoArranque USO Correcto DE LA MáquinaPuntos Relacionados CON EL Manejo Y LA Parada Máquina con manillar U ó cerrado Precauciones durante la operaciónAfilar LA Herramienta DE Corte Ajuste DEL Giro a Baja Velocidad RalentíArrancar después de la operación de calentamiento CuidadoSustitución del cabezal de Nylon CabezaldenylonUtilización 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 Comprobación DE LA Bujia Suministro DE Grasa a LA Caja DE EngranajesLimpieza DEL Filtro DE Combustible Cambio DE LA Tubería DE CombustibleLocalizacion de averias AlmacenamientoAtención después de almacenamiento de largo tirmpo Tiempo de Iinvestigación DE Averías Page Advertencia
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EM4250, EM4251, EM4250CA, EM4251CA specifications

The Makita EM4251CA and EM4250CA models are the latest additions to Makita's robust range of outdoor power equipment, specifically designed for professional landscapers and gardening enthusiasts. These brushcutters are known for their powerful performance, ease of use, and advanced technologies that enhance efficiency and durability.

The Makita EM4251CA features a displacement of 25.4cc, while the EM4250CA is slightly larger, with a 30.5cc engine. Both models are equipped with a high-performance 2-stroke engine that delivers impressive power and torque for tackling thick grass, weeds, and underbrush. The engines are designed for low emissions and fuel consumption, contributing to environmentally friendly operation while maintaining compliance with the latest regulatory standards.

One of the standout features of these brushcutters is the Easy Start System, which significantly reduces the effort required to start the engine. This system incorporates a spring-assisted starter that provides a smooth and reliable start every time. Additionally, the models offer a semi-automatic choke system that adjusts fuel flow for optimal performance in varying conditions.

For user comfort, the EM4251CA and EM4250CA are designed ergonomically, with a lightweight construction that enhances maneuverability without compromising strength. The adjustable bike handle provides solid control during operation, minimizing user fatigue during lengthy tasks. Both models also feature anti-vibration technology that reduces vibrations transmitted to the user, ensuring a more comfortable experience.

A robust and durable design is another hallmark of Makita's brushcutters. The fuel tank is constructed from high-quality materials to resist impacts and environmental factors, while the shaft is reinforced to withstand rigorous use. The inclusion of a reinforced cutter head allows for versatile cutting options, accommodating both trimmer line and metal blades for various applications.

For added convenience, these models are equipped with a soft grip handle that provides comfort during extended use, alongside a quick-release harness that allows for swift transitions between tasks. Overall, the Makita EM4251CA and EM4250CA brushcutters represent a blend of power, efficiency, and user-oriented design, making them ideal tools for anyone serious about maintaining their outdoor spaces.

With their mix of advanced technology and practical features, the EM4251 and EM4250 models ensure that users can tackle tough landscaping jobs with confidence and ease, making them invaluable assets for both professionals and hobbyists alike.
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