Fuels/Refueling, Correct Handling of Machine

FUELS/REFUELING

Handling fuel

Utmost care required when handling fuel. Fuel may contain substances similar to solvents. Refuel either in a well ventilated room or outdoors.

Do not inhale fuel vapors, avoid any contact of fuel or oil with your skin.

Mineral oil products degrease you skin. If your skin contacts with these substances repeatedly and for an extended period of time, it will desiccate. Various skin diseases may result. In addition, allergic reactions may occur. Eyes can be irritated by contact with oil. If oil comes into your eyes, immediately wash them with clear water. If your eyes are still irritated, see a doctor immediately.

Fuel and oil mixture

This brush-cutter (string-trimmer) is powered by a high-efficiency two-stroke engine being run with a mixture of fuel and two-stroke engine oil. The engine is designed for unleaded gasoline intended for automotive use with an octane rating of 87 or higher.

For lubricating the engine, use any brand of premium 2-stroke engine oil classified as grade ISO-L-EGD or JSAO- FC to be added to the fuel. Using any other oil will shorten the engine life and increase the required maintenance. It is absolutely required to observe a mixture ratio of 50 : 1 (2-stroke engine oil specified above), unless otherwise reliable function of the brush cutter ( or string trimmer ) cannot be guaranteed.

Correct Fuel Mixture ( 50 : 1 )

Gasoline		Oil
1	Gallon (US)	2.6 oz.
1	Liter	20 cc ( 20ml )
5	Liter	100cc ( 100ml )

STOP

Observe the Safety Instructions

on page 6.

Note :

When doing the fuel-oil mixture, first mix the entire oil quantity with half of the fuel required, then add the remaining fuel. Before filling it into the brush-cut- ter ( string trimmer ) tank, thoroughly shake the mixture. It is not recommended to add more engine oil than specified to ensure safe operation. This will result in a higher production of combustion residues which will pollute the environment and clog the exhaust channel in the cylinder as well as the muffler. In addition, the fuel consumption will rise and the performance will decrease.

Refuelling

Follow the appropriate manners described on page 6.

Storage of Fuel

Fuel cannot be stored for an unlimited period of time.

Purchase only the quantity required for a 4 week operating period. Use only approved fuel storage containers.

CORRECT HANDLING OF MACHINE

Attachment of shoulder strap

Always wear the shoulder strap and adjust the strap length so that the cutter blade is kept parallel with the ground.

Detachment

The shoulder strap has a quick release latch. In an emergency, pull the red strap (A) to detach the machine from you. Be extremely careful to maintain control of the machine at this time. Do not allow the machine to be deflected toward you or anyone in the work vicinity.

WARNING : Failure to maintain complete control of the machine may result in serious bodily injury or death.

To reassemble, remove the spring clip (B) from the machine, place open end over the strap buckle (C) and then insert the release blade (D).

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.