Dolmar MS-231 C, MS-261 C, MS-261 U, MS-331 U, MS-331 C Maintenance Schedule, Troubleshooting Chart

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MAINTENANCE SCHEDULE

General

Engine assembly, screws and nuts

Visual inspection for damage and tightness.

 

 

Check for general condition and security.

 

 

 

After each refueling

Control lever

Functional check

 

I-O switch

Functional check

 

 

 

Daily

Air filter

To be cleaned

 

Cooling air duct

To be cleaned

 

Cutting tool

Check for damage and sharpness

 

Idling speed

Inspect (Cutting tool does not rotate)

 

 

 

Weekly

Spark plug

Inspection, replace if necessary

 

Muffler

Check and clean the opening if necessary

 

 

 

Quarterly

Suction head

To be replace

 

Fuel tank

To be cleaned

 

 

 

Yearly

Fuel tank

Empty fuel tank

(Long Term)

Carburetor

Operate until engine stops

 

 

 

TROUBLESHOOTING CHART

Trouble

System

Observation

Cause

 

 

 

 

Engine does not start or

Ignition system

Ignition spark O.K.

Failure in fuel supply or compression system, mechanical defect

hard to start

 

 

 

 

No ignition spark

I-O switch operated, wiring fault or short circuit, spark plug or

 

 

 

 

 

connector defective, ignition module faulty

 

 

 

 

 

Fuel supply

Fuel tank filled

Wrong choke position, defective carburetor, fuel supply line bent

 

 

 

or blocked, dirty fuel

 

 

 

 

 

Compression

No compression when pulled over

Cylinder bottom gasket defective, Crankshaft seals damaged,

 

 

 

Cylinder or piston rings defective or improper sealing of spark

 

 

 

plug

 

 

 

 

 

Mechanical fault

Starter not engaging

Broken starter spring, broken parts inside the engine

 

 

 

 

Warm start problem

 

Tank filled

Carburetor contaminated or damaged. Clean or replace.

 

 

Ignition spark

 

 

 

 

 

Engine starts but soon

Fuel supply

Tank filled

Incorrect idle-adjustment,

stops

 

 

Carburetor contaminated

 

 

 

Defective tank, fuel supply line interrupted, cable or I-O switch

 

 

 

defective.

 

 

 

 

Insufficient performance

Several systems

Poor engine idling

Air filter contaminated, carburetor contaminated, muffler

 

 

 

clogged, exhaust duct in the cylinder clogged

 

 

 

 

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Contents Recommandation importante ImportanteOwner’s Warranty Responsibilities Table of contentsDolmar GmbH North American Division Warranty Coverage EnglishObtaining Warranty Service Emissions Component Defect Warranty CoverageEmissison Component Defect Warranty Period What is not CoveredOFF/STOP SymbolsON/START Intended use of the machine Safety InstructionsGeneral Instructions Personal protective equipmentKickback RefuelingMethod of operation Kickback preventionFirst Aid Technical DataMaintenance instructions For machines with U Handle models Mounting of HandleMounting of Protector For machines with Loop HandleMounting of Cutter Blade or Nylon Cutter Head Installing Cutter-BladeInstalling Nylon cutting head For # MS-260 U/261 U and # MS-330 U/331 UFUELS/REFUELING Correct Handling of MachineStopping Points in Operation and HOW to StopIdle Speed Adjustment RE-SHARPENING the Cutting ToolNylon Cutting Head Servicing InstructionsSupply of grease to gear case Cleaning of muffler exhaust portStorage Suction head in the fuel tankMaintenance Schedule Troubleshooting ChartResponsabilités envers la garantie du propriétaire FrançaisCalifornie Seulement DolmarDemande Dapplication DE LA Garantie Période DE Garantie Contre LES Vices DES Pièces À ÉmissionPièces Couvertes PAR LA Garantie CE QUE LA Garantie NE Couvre PASArrêt SymbolesMARCHE/DÉMARRAGE Utilisation prévue pour loutil Consignes DE SécuritéConsignes générales Dispositifs de protection personnelleChoc en retour RemplissageUtilisation Prévention des chocs en retourPremiers secours Données TechniquesInstructions dentretien ModèleÉcran Surmoulée Oui noir Pour les modèles à poignée en U Assemblage DE LA PoignéeAssemblage DU Protecteur Pour les modèles à poignée en bouclePour les modèles MS-260 U/261 U et MS-330 U/331 U Installation de la lame du sécateurInstallation de la tête de coupe en nylon CARBURANTS/REMPLISSAGE Comment Tenir LoutilRaffûtage DE Loutil Tranchant ArrêtRéglage DE LA Vitesse DE Rotation À Vide Tête DE Coupe EN Nylon Instructions Pour LA RéparationCrépine daspiration du réservoir de carburant RangementGraissage du carter dengrenage Nettoyage de lorifice de sortie du silencieuxHoraire Dentretien Tableau DE DépannageResponsabilidades del propietario para la garantía EspañolCalifornia Solamente ÍndiceQUÉ no Cubre LA Garantía Partes Cubiertas POR LA GarantíaObtención DEL Servicio DE Garantía Responsabilidades DEL Propietario DE LA GarantíaSímbolos ENCENDIDO/INICIOUso previsto para la máquina Instrucciones DE SeguridadInstrucciones generales Equipo de protección personalRetroceso brusco RepostajeMétodo de operación Prevención contra los retrocesos bruscosPrimeros auxilios Datos TécnicosInstrucciones de mantenimiento Pulgadas Conjunto del asidero Tipo Redondo En U Para máquinas del modelo con asideros en U Montaje DEL AsideroMontaje DEL Protector Para máquinas con asidero redondoPara # MS-230 C/231 C, MS-260 C/261 C y MS-330 C/331 C Montaje DEL Disco DE Corte O Cabezal DEL Cordón DE NylonPara # MS-260 U/261 U y # MS-330 U/331 U Instalación del disco de corteCOMBUSTIBLE/REPOSTAJE Manejo Correcto DE LA MáquinaAjuste DE LA Velocidad AL Ralentí Puntos a Tener EN Cuenta EN LA Operación Y Cómo PararParada Afilado DEL Implemento DE CorteCabezal DEL Cordón DE Nylon Instrucciones DE MantenimientoLa cabeza de succión del depósito de combustible AlmacenamientoSuministro de grasa a la caja de engranajes Limpieza del orificio de escape del silenciadorGráfico DE Solución DE Problemas Programa DE MantenimientoPage Dolmar GmbH Postfach 70 04 Hamburg Germany

MS-231 C, MS-261 C, MS-331 U, MS-331 C, MS-261 U specifications

The Dolmar range of chainsaws, including the MS-261 U, MS-331 C, MS-331 U, MS-261 C, and MS-231 C, represents innovation and performance in outdoor power equipment. These models are engineered for both professional and recreational use, catering to various cutting needs.

The MS-261 U stands out with its lightweight design and powerful engine, offering a balance between efficiency and portability. It features a 50.2 cc engine that delivers robust power for various tasks, from tree trimming to felling. The AutoReturn choke system simplifies starting, while its anti-vibration technology ensures operator comfort during extended use.

The MS-331 C takes performance further with its larger 59 cc engine, designed for demanding applications. One of its key features is the M-Tronic technology, which automatically adjusts the fuel mixture for optimal performance in different conditions, ensuring consistent power and efficiency. Additionally, the saw is equipped with a system that allows for quick chain tensioning, reducing downtime and increasing productivity.

The MS-331 U combines the power of the MS-331 C with an ergonomic design suited for professional forestry work. This model is particularly designed for heavy-duty applications, featuring a larger fuel tank for extended running time. Its advanced vibration dampening system significantly reduces operator fatigue, making it ideal for long workdays.

In contrast, the MS-261 C is more compact and lightweight, making it a preferred choice for those who need versatility and maneuverability. This model integrates a Catalytic Converter, which not only enhances performance but also reduces emissions, making it an environmentally-friendly option. The inclusion of a premium air filter extends the intervals between maintenance, enhancing overall user experience.

Lastly, the MS-231 C is tailored for homeowners and light commercial use. Its efficient 45.6 cc engine is powerful yet easy to handle, making it perfect for casual users and those new to chainsaw operation. The Quick Stop chain brake and low vibration technology are standard features, promoting safety and comfort.

Overall, the Dolmar MS series combines innovative technologies and user-friendly features that cater to a wide audience, providing reliable solutions for cutting tasks ranging from casual yard work to professional logging operations. Each model emphasizes power, efficiency, and comfort, ensuring a productive experience for every operator.