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

 

 

 

 

 

 

 

 

 

 

 

7

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Dolmar MS-331 U, MS-261 C, MS-261 U, MS-331 C, MS-231 C instruction manual Technical Data, Maintenance instructions, First Aid

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.