Dolmar MS-331 U, MS-261 C, MS-261 U, MS-331 C Technical Data, Maintenance instructions, First Aid

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Maintenance instructions

-The condition of the Brush Cutter/String Trimmer must be checked before operation, in particular of the cutting tool, the protective devices and also the shoulder strap. Special attention must be paid to the cutting blade which must be correctly sharpened.

-Stop the engine and remove spark plug connector when replacing or sharpening cutting tools, and also when cleaning the machine or cutting tool.

-Operate the Brush Cutter/String Trimmer with as little noise and contamination as possible. In particular check the correct setting of carburetor.

-Clean the Brush Cutter/String Trimmer regularly and ensure that all screws and nuts are well tightened.

-Never service or store the Brush Cutter/String Trimmer in the vicinity of naked flames.

-Always store the Brush Cutter /String Trimmer in locked rooms and with a emptied fuel tank.

-Do not perform any modifications on the Brush Cutter/String Trimmer as this will endanger your safety.

-The performance of maintenance or repair work by the user is limited to those activities as described in this instruction manual. All other works are to be done by an Authorized Service Agent. Use only genuine spare parts and accessories supplied by DOLMAR.

Use of non-approved accessories and tools means increased risk of accidents.

DOLMAR will not accept any liability for accidents or damage caused by the use of non-approved cutting tools and fixing devices of cutting tools, or accessories.

First Aid

Make sure that a first-aid box is available in the vicinity of the cutting operations in case of accident.

TECHNICAL DATA

MODEL

 

 

MS-230 C/231 C

MS-260 C/261 C

MS-260 U/261 U

 

MS-330 C/331 C

MS-330 U/331 U

 

 

 

 

 

 

 

 

 

 

Dry Weight

 

 

5.7 kg

 

5.7 kg

6.5 kg

 

6.5 kg

7.3 kg

 

 

 

 

 

 

 

 

 

 

Engine

 

 

TLE23FD-TBM/TBD

 

TLE26FD-TBM/TBD

 

TLE33FD-TBM/TBD

 

 

 

 

 

 

 

 

Bore x Stroke

 

 

31 x 30 mm

 

33 x 30 mm

 

36 x 32 mm

 

 

 

 

 

 

 

 

Displacement

 

 

22.6 cm3

 

25.6 cm3

 

32.6 cm3

Maximum output

 

 

0.7 kW (0.94 HP)/

 

0.8 kW (1.07HP)/8000 rpm

 

0.97 kW (1.3 HP)/7500 rpm

 

 

8000 rpm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Fuel

 

 

Mixture of gasoline and lubricanting oil (ratio 50:1)

 

 

 

 

 

 

 

 

 

Lubricating oil

 

 

 

 

Two-stroke motor oil FC

 

 

 

 

 

 

 

 

 

 

 

 

Fuel Tank Capacity

 

 

 

 

0.6 lit.

 

 

0.8 lit.

 

 

 

 

 

 

 

 

 

Spark Plug

 

 

 

 

NGK BPMR8Y

 

 

 

 

 

 

 

Carburetor

 

 

Diaphragm type (with 2 passage for air and mixture)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Main Pipe

 

Drive Shaft

Flex/Rigid

 

 

 

Rigid

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Diameter

 

 

7 mm Hollow (5 mm)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Upper end

 

 

Involute Spline (7 x 7 x 0.75)

 

 

 

 

 

 

 

 

 

 

 

 

 

Lower end

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tube

Type

 

 

 

Straight

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Diameter

 

 

 

25.4 mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Wall thickness

 

 

 

1.5 mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Length

 

 

 

1500 mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Finish

 

 

Silver Anodized

 

 

 

 

 

 

 

 

 

 

 

 

 

Bearings

Type

 

 

Bronze bush in rubber

 

 

 

 

 

 

 

 

 

 

 

 

 

String Head

 

Type

Tap and Go

 

 

 

Tap and Go

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

O.Dia.

105 mm

 

 

N/A

 

105 mm

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Line size

2.4 mm

 

 

 

 

2.4 mm

 

 

 

 

 

 

 

 

 

 

 

Gear Case Assy

 

Arbor size

 

 

M10LH FEM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Gear ratio

 

 

14/19

 

 

17/21

 

 

 

 

 

 

 

 

 

 

 

Clutch Case Assy

 

Anti-Vib

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Number Brgs

 

 

 

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Drum dia.

 

 

54 mm

 

 

78 mm

 

 

 

 

 

 

 

 

 

 

Throttle Control

 

Overmolded

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

First Idle

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

Hanger

 

Type

 

 

 

Fixed

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Guard

 

Type

Grass

 

 

Weed Blade

 

Grass

Weed Blade

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Swath dia

41 cm (16 in.)

 

43 cm (17 in.)

N/A

 

43 cm (17 in.)

N/A

 

 

 

 

 

 

 

 

 

 

Handle Assy

 

Type

Loop

 

 

Bike

 

Loop

Bike

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Barrier

 

 

 

N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Overmolded

Yes (Black)

 

N/A

 

Yes (Black)

N/A

 

 

 

 

 

 

 

 

 

 

Band Shoulder

 

Type

 

 

Single

 

 

 

Double

 

 

 

 

 

 

 

 

 

 

Tool Set

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

Blade

 

Size

N/A

 

 

23 cm (9 in.)

 

N/A

23 cm (9 in.)

 

 

 

 

 

 

 

 

 

 

 

 

Type

 

 

Quard

 

Quard

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Blade Holder

 

 

N/A

 

 

Yes

 

N/A

Yes

 

 

 

 

 

 

 

 

 

 

 

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Contents Importante Recommandation importanteEnglish Table of contentsDolmar GmbH North American Division Warranty Coverage Owner’s Warranty ResponsibilitiesWhat is not Covered Emissions Component Defect Warranty CoverageEmissison Component Defect Warranty Period Obtaining Warranty ServiceON/START SymbolsOFF/STOP Personal protective equipment Safety InstructionsGeneral Instructions Intended use of the machineKickback prevention RefuelingMethod of operation KickbackMaintenance instructions Technical DataFirst Aid For machines with Loop Handle Mounting of HandleMounting of Protector For machines with U Handle modelsFor # MS-260 U/261 U and # MS-330 U/331 U Installing Cutter-BladeInstalling Nylon cutting head Mounting of Cutter Blade or Nylon Cutter HeadCorrect Handling of Machine FUELS/REFUELINGRE-SHARPENING the Cutting Tool Points in Operation and HOW to StopIdle Speed Adjustment StoppingServicing Instructions Nylon Cutting HeadSuction head in the fuel tank Cleaning of muffler exhaust portStorage Supply of grease to gear caseTroubleshooting Chart Maintenance ScheduleDolmar FrançaisCalifornie Seulement Responsabilités envers la garantie du propriétaireCE QUE LA Garantie NE Couvre PAS Période DE Garantie Contre LES Vices DES Pièces À ÉmissionPièces Couvertes PAR LA Garantie Demande Dapplication DE LA GarantieMARCHE/DÉMARRAGE SymbolesArrêt Dispositifs de protection personnelle Consignes DE SécuritéConsignes générales Utilisation prévue pour loutilPrévention des chocs en retour RemplissageUtilisation Choc en retourModèle Données TechniquesInstructions dentretien Premiers secoursÉcran Surmoulée Oui noir Pour les modèles à poignée en boucle Assemblage DE LA PoignéeAssemblage DU Protecteur Pour les modèles à poignée en UInstallation de la tête de coupe en nylon Installation de la lame du sécateurPour les modèles MS-260 U/261 U et MS-330 U/331 U Comment Tenir Loutil CARBURANTS/REMPLISSAGERéglage DE LA Vitesse DE Rotation À Vide ArrêtRaffûtage DE Loutil Tranchant Instructions Pour LA Réparation Tête DE Coupe EN NylonNettoyage de lorifice de sortie du silencieux RangementGraissage du carter dengrenage Crépine daspiration du réservoir de carburantTableau DE Dépannage Horaire DentretienÍndice EspañolCalifornia Solamente Responsabilidades del propietario para la garantíaResponsabilidades DEL Propietario DE LA Garantía Partes Cubiertas POR LA GarantíaObtención DEL Servicio DE Garantía QUÉ no Cubre LA GarantíaENCENDIDO/INICIO SímbolosEquipo de protección personal Instrucciones DE SeguridadInstrucciones generales Uso previsto para la máquinaPrevención contra los retrocesos bruscos RepostajeMétodo de operación Retroceso bruscoInstrucciones de mantenimiento Datos TécnicosPrimeros auxilios Pulgadas Conjunto del asidero Tipo Redondo En U Para máquinas con asidero redondo Montaje DEL AsideroMontaje DEL Protector Para máquinas del modelo con asideros en UInstalación del disco de corte Montaje DEL Disco DE Corte O Cabezal DEL Cordón DE NylonPara # MS-260 U/261 U y # MS-330 U/331 U Para # MS-230 C/231 C, MS-260 C/261 C y MS-330 C/331 CManejo Correcto DE LA Máquina COMBUSTIBLE/REPOSTAJEAfilado DEL Implemento DE Corte Puntos a Tener EN Cuenta EN LA Operación Y Cómo PararParada Ajuste DE LA Velocidad AL RalentíInstrucciones DE Mantenimiento Cabezal DEL Cordón DE NylonLimpieza del orificio de escape del silenciador AlmacenamientoSuministro de grasa a la caja de engranajes La cabeza de succión del depósito de combustiblePrograma DE Mantenimiento Gráfico DE Solución DE ProblemasPage 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.