Dolmar MS-331 U, MS-331 C, MS-261 C, MS-231 C, MS-261 U User Manual

Instruction Manual Manuel d’instructions Manual de instrucciones

Brush Cutter Débroussailleuse Desbrozadora

MS-260 U MS-261 U MS-330 U MS-331 U

String Trimmer Taille-bordures Cortabordes

MS-230 C MS-231 C MS-260 C MS-261 C MS-330 C MS-331 C

Important:

Read this instruction manual carefully before putting the Brush Cutter / String Trimmer into operation and strictly observe the safety regulation! Preserve instruction manual carefully !

Recommandation importante :

Lire soigneusement ce manuel d’instructions avant de mettre la débroussail leuse/t aille-bor dure s en service et observer rigou reu sement les consignes de sécurité! Conserver soigneusement ce manuel d’instructions.

Importante:

Leer cuidadosamente este manual de instrucciones antes de poner en marcha la máquina y observar estrictamente las normes de seguridad. Conservar este manual de instrucciones con cuidado.

ENGLISH

Thank you very much for purchasing DOLMAR Brush Cutter/String Trimmer. We are pleased to recommend to you the DOLMAR Brush Cutter/String Trimmer which is the result of a long development program and many years of knowledge and experience. Please read this booklet which refers in detail to the various points that will demonstrate its outstanding performance. This will assist you to obtain the best possible result from your DOLMAR Brush Cutter/String Trimmer.

Table of contents

SYMBOLS................................................................................................. 4

SAFETY INSTRUCTIONS.........................................................................5

TECHNICAL DATA........................................................... .............. ............7

MOUNTING OF HANDLE ........... ............................. .............................. ... 8

MOUNTING OF PRO TE C TOR.............................................. ............... ..... 8

MOUNTING OF CUTTER BLADE OR NYLON CUTTING HEAD............. 9

FUELS/REFUELING............................................................................... 10

CORRECT HANDLING OF MACHINE....................................................10

POINTS IN OPERATION AND HOW TO STOP......................................11

RE-SHARPENING THE CUTTING TOOL...............................................11

SERVICING INSTRUCTIONS................................................................. 12

STORAGE ............................................................................................... 13

– CALIFORNIA ONLY –

DOLMAR GmbH North American Division. (D olma r) and t he Cali f ornia Air Resources Board emission control system’s warranty statements (owner's defect warranty rights and obligations) In the interest of the environment, Dolmar engines that meet strict emission requirements are labeled. “This small off-road engine conforms to 2000 and later California Emission Control Regulations”.

CALIFORNIA EMISSION CONTROL WARRANTY STATEMENTYOUR WARRANTY RIGHTS AND OBLIGATIONS

The California Air Resources Board and Dolmar are pleased to explain the emission control system warranty on your small off-road engine. In California, new small off-road engine must be designed, built and equipped to meet the state’s stringent anti-smog standards. Dolmar must warrant the emission control system on your engine for the periods of time listed below provided there has been no abuse, neglect or improper m a intenance of your small of f- road engine. Your emission control system includes parts such as the carburetor, air cleaner, ignition system, fuel tank, muffler and catalytic converter. Also included may be connectors and other emission related assemblies. Where a warrantable condition exists, Dolmar will repair your small off-road engine at no cost to you including diagnosis, parts and labor.

DOLMAR GmbH North American Division Warranty Coverage

The emission control system is warranted for two years. If any covered part on your engine is defective, the part will be repaired or replaced by Dolmar.

Owner’s Warranty Responsibilities

As the small off-road engine owner, you are responsible for performance of the required maintenance listed in your Owner's Manual. Dolmar recommends that you retain all receipts covering maintenance on your small off-road engine, but Dolmar cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all sc heduled maintenance. As the small off-road engine owner, you should however be aware that Dolmar may deny you warranty coverage if your small off-road engine or a part has failed due to abuse, neglect or improper maintenance or unproved m odifications. You are responsible for presenting your small off-road engine to an authorized service dealer or equipment manufacturer to whom Dolmar would sell engines as soon as the problem exists. The warranty repairs should be completed in a reasonable amount of time, not to exceed 30days. If you have a question regardi ng you r warranty co verage, you should contact Dolmar Warranty Service Department at 1888-OPE-PART for the information.

DOLMAR GmbH North American Division Emission Control Defects Warranty Provisions

The following are specific provisions relative to your Emission Control Defects Warranty Coverage. it is in addition to the Dolmar engine warranty for non-regulated engines found in the Owner's Manual. 1 Warranted Parts Coverage under this warranty extends only to the parts listed below (the emission control systems parts) to the extent these parts were present on the engine purchased.

• Fuel Metering Systems

• Carburetor And Internal Parts

• Cold Start Enrichment System (Soft Choke)

• Fuel Filter (up until the first scheduled change)

• Fuel Inlet Hose

• Fuel Outlet Hose

• Air Induction System

• Air Filter (E le ment)

• Ignition System

• Spark Plug(s)

• Magneto Ignition System

•Fuel Tank

• Catalyst Or Thermal Reacter System

• Catalystic Converter

2. Length of Coverage Dolmar warrants to the initial owner and each subsequent purchaser that the warranted parts shall be free f rom defects in materials and workmanship which cause the failure of the w arranted part(s) for a period of two years from the date the engine is delivered to a retail purchaser.

3. No Charge Repair or replacement of any warranted part will be performed at no charge to the owner, including diagnostic labor which leads to the determination that a warranted part is defective, if the diagnostic work is performed at an authorized service dealer of equipment manufacturer to whom Dolmar would sell engines.

4. Claims and Coverage Exclusions Warranty claims shall be filled in accordance with the provisions of the Dolmar engine warranty policy. Warranty coverage shall be excluded for failures of warranted parts which are not original Dolmar parts or because of abuse, neglect or improper maintenance as set forth in the Dolmar engine warranty policy. Dolmar is not liable to cover failures or warranted parts caused by the use of add-on, nonoriginal, or modified pa rts.

5. Maintenance Any warranted part which is not scheduled for replacement as required maintenance or which is scheduled only for regular inspection to the effect of “repair or replace as nece ssary” shall be warranted as to defects for the warranty period. Any warranted part which is scheduled for replacement as required maintenance shall be warranted as to defects only for the period of time up to the first scheduled replacement for that part. Any replacement part that is equivalent in performance and durability may be used in the performance of any maintenance or repairs. The owner is responsible for the performance of all required maintenance, as defined in the Dolmar owner’s manual.

6. Consequential Coverage Coverage hereunder shall extend to the failure of any engine components caused by the failure of any warranted part still under warranty.

EMISSIONS COMPONENT DEFECT WARRANTY COVERAGE

DOLMAR GmbH North American Division (Dolmar) warrant to the initial retail purchaser and each subsequent owner, that this utility equipment was designed, built, and equipped to conform at the ti me of initial sale to all appl ic able regulations of the U.S. Environmental Protection Agency (EPA), and that the engine is free of defects in mater ial s and workmanship whic h w oul d caus e thi s e ngine to fail to conform with EPA regulations during its warranty period.

For the components listed under PARTS COVERED, the service dealer authorized by Dolmar will, at no cost to you, make the necessary diagnosis, repair, or replacement necessary to ensure that the engine complies with applicable U.S. EPA regulations.

EMISSISON COMPONENT DEFECT WARRANTY PERIOD

The warranty period for this engine begins on the date of sale to th e initial purchaser and continues for a period of 2 years.

PARTS COVERED

Listed below are the parts covered by the Emission Components Defect Warranty. Some of the parts listed below may require scheduled maintenance and are warranted up to the first scheduled replacement point for that part. (1) Fuel Metering System

(i) Carburetor and internal parts (ii) Fuel filter, if applicable. (iii) T hrottle stopp e r, if applic able. (iv) Choke System, if applicable.

(2) Air Induction Sy s tem

(i) Air cleaner plate (ii) Air cleaner case

(3) Ignition System

(i) Spark pl u gs . (ii) Flywheel Magneto (iii) Ignition Coil.

(4) Miscellaneous Items Used in Above Systems

(i) Fuel hoses, clamps and sealing gaskets

OBTAINING WARRANTY SERVICE

To obtain warranty service, take your engine to the nearest DOLMAR Factory Service Center or service Center authorized by Dolmar. Bring your sales receipts indicating date of purchase for this engine. The dealer of service authorized by Dolmar will perform the necessary repairs or adjustments within a reasonable amount of time and furnish you with a copy of the repair order. All parts and accessories replaced under this warranty become the property of Dolmar.

WHAT IS NOT COVERED

• Conditions resulting from tampering, misuse, improper adjustment (unless they were made by the service dealer authorized by Dolmar during a warranty repair), alteration, accident, failure to use the recommended fuel and oil, or not performing required maintenance services.

- The replacement parts used for required maintenance services.

- Consequential damages such as loss of time, inconvenience, loss of use of the engine or equipment, etc.

- Diagnosis and inspection charges that do not result in warranty-eligible service being performed.

- Any non-authorized replacement part, or malfunction of authorized parts due to use of non-authorized parts.

OWNER’S WARRANTY RESPONSIBILITIES

As the engine owner, you are responsible for the performance of the required maintenance listed in your owner's manual. Dolmar recommends that you retain all receipts covering maintenance on your engine, but Dolmar cannot deny warranty solely for the lack of receipts or for your failure to ensure the performance of all scheduled maintenance. As the engine owner, you should however be aware that Dolmar may deny warranty coverage if your engine or a part has failed due to abuse, neglect, improper maintenance or unapproved modifications. You are responsible for p r esent ing your engine to the nearest service dealer authorized by Dolmar when a problem exists. If you have an y que st ions regar di ng y our war rant y rig hts and resp onsibilities, you should contact the Dolmar Warranty Service Department at 1-888-OPE-PART for the information.

THINGS YOU SHOULD KNOW ABOUT THE EMISSION CONTROL SYSTEM WARRANTY:

MAINTENANCE AND REPAIRS You are responsible for the proper maintenance of the engine. You should keep all receipts and maintenance records covering the performance of regular maintenance in the event questions arise. These receipts and maintenance records should be transferred to each subsequent owner of the engine. Dolmar reserves the righ t to deny warranty coverage if the engine has not been properly maintained. Warranty claims will not be denied, however, solely because of the lack of required maintenance or failure to keep maintenance records. MAINTENANCE, REPLACEMENT OR REPAIR OF EMISSION CONTROL DEVICES AND SYSTEMS MAY BE PERFORMED BY ANY REPAIR ESTABLISHMENT OR INDIVIDUAL; HOWEVER, WARRANTY REPAIRS MUST BE PERFORMED BY A SERVICE DEALER AUTHORIZED BY Dolmar. THE USE OF PARTS THAT ARE NOT EQUIVALENT IN PERFORMANCE AND DURABILITY TO AUTHORIZED PARTS MAY IMPAIR THE EFFECTIV ENESS OF THE EMI SSION CONTR O L SYST EM AND MAY HAVE A BEARING ON THE OUTCOME OF A WARRANTY CLAIM.

If other than the parts authorized by Dolmar are used for maintenance replacements or for the repair of components affecting emission control, you should assure yourself that such parts are warranted by their manufacturer to be equivalent to the parts authorized by Dolmar in their performance and durability.

HOW TO MAKE A CLAIM

All repair qualifying under this limited warranty must be performed by a service dealer authorized by Dolmar. In the event that any emission-related part is found to be defective during the warranty period, you shall notify Dolmar Warranty Service Department at 1-888-OPEPART. Dolmar and you will be advised of the appropriate warranty service dealer or service providers where the warranty repair can be performed.

SYMBOLS

You will note the following symbols when reading the instruction manual.

Read instruction Manual

Take Particular care and Attention

Forbidden

Keep distance Top permissible tool speed

Flying object hazard Fuel and oil mixture

No smoking Engine-Manual start

Wear eye and ear protection (for String trimmer only)

Wear protective helmet, eye and ear protection (for Brush Cutter only)

Do not use metal blades (for String trimmer only)

No open flame Emergency stop

Protective gloves must be worn

Kickback Recycling

Keep the area of operation clear of all persons and pets

Wear sturdy boots with nonslip soles. Sleeltoed safety boots are recommended.

STOP

First Aid

RE Y

ON/STAR T

OFF/STOP

SAFETY INSTRUCTIONS

General Instructions

- To ensure correct operation, user has to read this instruction manual to make himself familiar with the handling of the Brush Cutter/String Trimmer . Users insufficiently inf ormed will risk danger to themselves as well as others due to improper handling.

- It is recommended only to lend the Brush Cutter/String Trimmer to people who have proven to be experienced with Brush Cutter/String Trimmer. Always hand over the instruction manual.

- First users should ask th e dealer for basic instructions to familiarize oneself with the handling of an engine powered cutter.

- Children and young persons aged under 18 years must not be allowed to operate the Brush Cutter/String Trimmer. Persons over the age of 16 years may however use the device for the purpose of being trained only whilst under supervision of a qualified trainer.

- Use Brush Cutter/String Trimmer with the utmost care and attention.

- Operate the Brush Cutter/String Trimmers only if you are in good physical condition. Perform all work calmly and carefully. The user has to accept liability for others.

- Never use the Brush Cutter/String Trimmer after consumption of alcohol or drugs, or if feeling tired or ill.

Intended use of the machine

The Brush Cutter/String Trimmer is only intended for cutting grass, weeds, bushes, undergrowth. It should not be used for any other purpose such as edging or hedge cutting as this may cause injury.

Personal protective equipment

- The clothing worn should be functional and appropr iate, i.e. it should be tight-fitting but not cause hindrance. Do not wear either jewelry or clothing which could become entangled with bushes or shrubs.

- In order to avoid either head-, eye-, hand-or foot injuries as well as to protect your hearing, the following protective equipment and protective clothing must be used during operation of the Brush Cutter/String Trimmer.

- Always wear a helmet where there is a risk of falling objects . The protective helmet (1) is to be checked at regular intervals for damage and is to be replaced at the latest after 5 years. Use only approved protective helmets.

- The visor (2) of t he helmet ( or goggles ) protects the face from flying debris and s tones. During operation of the Brush Cutter/Sting Trimmer, always wear goggles, or a visor to protect eye injuries.

- Wear adequate noise protection equipment to avoid hearing impairment ( ear muffs (3), ear plugs etc. ).

- The work overalls (4) protect against flying stones and debris. Wearing work overalls is strongly recommended.

- Always wear special gloves (5) made of thick leather during operation of the Brush cutter/String Tr immer.

- When using the Brush Cutter/Str ing Trimmer, always wear sturdy shoes (6) with a non-slip sole to protect against injuries and ensure a good footing.

Starting the brush cutter

- Make sure that there are no children or other people wit hin a working range of 15 meters ( 50ft ), also pay attention to any animals in the working vicinity.

- Before use, always check that the Brush cutter/String Trimmer is safe for operation. Check the security of the cutting tool, the control lever for easy action and check for proper functioning of the control lever lock.

- Rotation of the cutting tool during idling the engine is not allowed. Check with your dealer for adjustment. Check for clean and dry handles and test the function of the start/stop switch.

- Start the Br ush Cutter/String trimmer only in accordance with the inst ructions mentioned in this manual. Do not use any other methods for starting the engine.

- Use the Brush Cutter/String Trimmer and the tools only for such applications as specified.

- Only start t he B r ush Cutter/String Trimmer engine after the entire assembly is done. Operation of the machine is only permitted after all the appropriate accessories are attached.

- Before starting, make sure that the cutting tool has no contact with hard objects such as branches, stones etc. as the cutting tool will rotate when starting.

- The engine is to be switched off immediately in case of any engine problems.

- Should the cutting tool hit stones or other hard objects, immediately stop the engine and inspect the cutting tool.

- Inspect the cutting tool at shor t regular intervals for damage ( Detect hairline cracks by means of tapping-noise test ).

- Operate the Brush Cutter/String Trimmer only with the shoulder strap provided. It should be suitably adjusted before using the Brush Cutter/String Trimmer. Adjust the should strap according to the user’s size to prevent fatigue during operation. Never hold the Brush Cutter/String Trimmer with one hand during use.

- During operation always hold the Brush Cutter/String Trim mer with both hands. Always ensure a safe footing.

- Operate the Brush Cutter/String Trimmer in such a manner as to avoid inhalation of the exhaust gases. Never run the engine in enclosed rooms ( risk of gas poisoning ). Carbon monoxide is an odorless gas.

- Switch off the engine while not in use of the Brush Cutter/String Trimmer, and place it in a safe location to prevent danger to others or damage to the machine.

- Never put the hot Brush Cutter/String Tr immer on dry grass or on any combustible materials.

- The Brush Cutter/String Trimmer has to be always equipped with an appropriate guard.

- All protective installations and guards provided with the Brush Cutter/String Trimmer must be used during operation.

- Never run the engine with faulty exhaust muffler.

- Stop the engine during transport.

- During transport for long distances, the tool-protection must always be used.

- Make sure a safe position of the Brush Cutter/String Trimm er during car transportation to avoid fuel leakage.

- In transporting the Brush Cutter/String Trimmer, make sure that the fuel tank is completely empty.

- When unloading the Brush Cutter/String Trimmer from the truck, never drop the engine on the ground, which may severely damage the fuel tank.

- Always lift the entire unit of the machine from the ground when moving the machine. Dragging the fuel tank is highly dangerous and may cause damage of the tank and leakage of fuel, possibly causing fire.

Diagrammatic figure

Refueling

- Always stop the engine during refueling, keep away from open flames and do not smoke.

- Always wear protective gloves during refueling. Change and clean protective clothing at regular intervals.

- Be careful not to spill either fuel or oil for environmental protection. Clean the Brush Cutter/String Trimmer immediately if fuel is split.

- Avoid any fuel contact with your clothing. Change your clothing immediately if fuel is split on it to prevent clothing catching fire.

- Inspect the fuel cap regularly to make sure that it is securely fastened and does not leak.

- Always tighten the fuel tank cap securely. Change the location to start the engine (at least 3 meter away from the place of refueling).

- Never refuel in closed rooms. Fuel vapors accumulate, which may cause explosions.

- Only transport and store fuel in approved containers. Make sure the fuel stored is not accessible to children.

Method of operation

- Only use the Brush Cutter/String Trimmer in good light and visibility. During the winter season, always be aware of slippery or wet area, ice and snow. Ensure a safe footing.

- Never cut above waist height.

- Never operate the Brush Cutter/String Trimmer standing on a ladder.

- Never use the Brush Cutter/String Trimmer climbing up into trees.

- Never work on unstable surfaces.

- Remove sand, stones, nails etc. within the working range. Foreign materials may damage the cutting tool and cause dangerous kick-back.

- The cutting tool must have reached full working speed before contact with the grass.

• Resting

• Transport

• Refuelling

• Maintenance

• Tool Replacement

Kickback

- When operating the brush cutter, uncontrollable kickback may occur.

- This is particularly the case when attempting to cut within a blade segment between 12 and 2 o’clock.

- Never use the brush cutter within a segment between 12 and 2 o’clock.

- Never apply the blade of brush cutter to solids, such as bushes and trees, etc., having a diameter in excess of 3 cm or the brush cutter will be deflected at great force with the risk of injuries.

Kickback prevention

T o avoid kickback, ensure the following :

- Operation within a blade segment between 12 and 2 o’clock presents positive hazards, especially in using metal cutting tools.

- Cutting operations within a blade segment between 11 and 12 o’clock, and between 2 and 5 o’clock, must only be performed by trained and experienced operators, and then only at their own risk. Easy cutting with almost no kickback is possible within a blade segment between 8 and 11 o’clock.

Cutting Tools

Use only the correct cutting tool.

Caution: Kickback

Diagrammatic figure

Maintenance instructions

- The condition of the Brush Cutter/ Str ing 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 cm

Maximum output 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)

0.7 kW (0.94 HP)/ 8000 rpm

0.8 kW (1.07HP)/8000 rpm 0.97 kW (1.3 HP)/7500 rpm

25.6 cm

32.6 cm

Main Pipe Drive Shaft Flex/Rigid Rigid

Diameter 7 mm Hollow (5 mm) Upper end 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

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

Overmolde d Yes (Black) N/A Yes (Black) N/A Band Shoulder Type Single Double Tool Set Yes Blade Size

Type Quard Quard Blade Holder N/A Yes N/A Yes

N/A

Involute Spline (7 x 7 x 0.75)

N/A

23 cm (9 in.)

Tap and Go

N/A

N/AO.Dia. 105 mm 105 mm

23 cm (9 in.)

MOUNTING OF HANDLE

CAUTION: Before doing any work on the Brush Cutter/String Trimmer, always stop the engine and pull the spark plug connector off the spark plug. Always wear protective gloves.

CAUTION: Start the engine of Brush Cutter/String Trimmer after making sure that it is assembled completely.

For machines with U Handle models

- Place the handle-fixing metal so that the handle with the control lever will be positioned on the right (the right-hand grip side) as viewed from the engine side, and the other handle on the left side.

- Fit the groove of the handle-fixing material to the handle end. Fix the attached metal by he xagon sock et bolts supplied.

- Adjust the position of handle for easy and comfortable operation, and then tighten securely the four (4) hexagon socket bolts uniformly on the right and left with the wrench provided.

For machines with Loop Handle

- Fix a barrier to the left side of the machine together with the handle of operator’s protection.

- Do not adjust position of the loop handle too close to the control grip.

- The handle must be kept in position more than 250 mm from the hanger.

MOUNTING OF PROTECTOR

To meet the applicable safety provisions, only the tool/protector combinations as described in the table must be used.

Use genuine DOLMAR cutter blades or nylon cutting head.

The cutter blade must be well sharpened, free of cracks or breakage. If the c utter blade hits against a stone during operation, stop the engine and check the blade immediately.

to Engine

STOP

MS-260 U/261U MS-330 U/331U

MS-230 C/231C MS-260 C/261C MS-330 C/331C

Star Blade

Sharpen or replace the cutter blade every three (3) hours of operation. If the nylon cutting head hits against a stone during operation, stop the engine and check the nylon cutting head immediately. CAUTION:

The appropriate blade guard must always be installed for your own safety and complying with accident-prevention regulations. Operation without the safety guard is not permitted.

Eddy Blade Protector for metal blades

Nylon cutting head

Protector for cord cutter

For # MS-260 U/261 U and # MS-330 U/331 U

Fix the protector (1) to the clamp (3) with two bolts.

For # MS-230 C/231 C, MS-260 C/261 C and MS-330 C/331 C

Fix the protector (1) to the clamp (3) with two bolts.

(3)

(1)

MOUNTING OF CUTTER BLADE OR NYLON CUTTER HEAD

Turn the Brush Cutter/String Trimmer upside down and replace the cutter blade or the nylon cutting head.

- Installing Cutter-Blade

Mount the cutter blade (A) onto the receiver washer (B). Make sure that the cutter blade (A) is centered and lies flat. The guide of the receiver washer (B) must fit in the arbor hole in the cutter blade (A).

Install the clamp washer (C) with the raised center away from the cutter blade (A). Insert the holding-pin (D) through t he s lot of the grass cover (E) and rotate t he rec eiver washer (B) until it is locked with the holding -pin (D). Then install the nut guard (F) and the blade nut (G) onto the gear case and turn counterclockwise to tighten securely .

Note : Always wear gloves when handling the cutter blade

(3)

(1)

STOP

- Installing Nylon cutting head

Install the receiver washer (A) onto the gear case. Insert the holding-pin (B) through the slot of the grass cover (C) and rotat e t he rec eiver washer (A) until it is locked with the holding-pin (B). Then place the nylon-cutting head (D) on the receiver washer (A) and rotate the nylon-cutting head (D) counterclockwise to tighten securely.

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 f or 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-trimm er) 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 JSAOFC 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 )

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-cutter ( string trimmer ) tank, thoroughly shake the mixture. It is not recom mended 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.

STOP

Observe the Safety Instructions

on page 6.

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).

POINTS IN OPERATION AND HOW TO STOP

Follow the applicable accident prevention regulations.

Starting

Move at least 3 m away from the place of refueling. Place the machine on a flat, bare surface so that the cutting blade does not contact the surface of ground or any other objects.

Cold start

For machine with U Handle or Loop Handle

- Move the switch (1) to the “I” position.

- Push gently the primer pump (A) 8 to 10 times.

- Set the choke lever (B) to the “CHOKE” position (C). Note : Depress the trigger safety lock (E) before squeezing trigger.

- Squeeze the trigger (F) to full throttle position and hold it, and t hen s et the switch (1) to the “START” position and release the trigger (F).

- Pull the starter until the engine tries to run (No more than 6 pulls ).

- Set the choke lever to half choke position.

- Pull the starter until the engine start running.

After the engine runs for 30 to 45 seconds at the “START” position ( for warming up the engine ), move the choke lever to the “RUN” position ( D ).

Warm Start ( Re-starting Engine )

- Set the choke lever (B) to the “RUN” position (D).

Note : You do not need to pull the trigger or set the throttle-lock when the engine is warm.

- Pull the starter rope until the engine runs.

D C

STOPPING

Release the trigger (F) fully, and push the switch (1) to the “O” position that the engine will stop. Be aware that the cutting blade may not stop immediately and allow it to slow down fully.

IDLE SPEED ADJUSTMENT

Your DOLMAR engine has been adjusted at the factory for optimum performance and fuel consumption, and no further adjustment is required. Due to varying atmospheric and climatic conditions, however, you ma y need some minor adjustment for your area.

Checking the idle-speed

The idle-speed should be set to 2,800 – 3,300 rpm. If necessary, adjust the idle-speed using with a tachometer to insure the proper idle-speed. Note that the cutting blade or the nylon cutting head must not turn when the engine is on idle.

Adjusting the idle rpm. Can be done by turning the idle-speed screw (A) clockwise ( for increasing the engine speed ) or counterclockwise ( for decreasing the engine speed ).

If the engine does not idle properly after the adjustment, contact your nearest Dolmar dealer for service.

RE-SHARPENING THE CUTTING TOOL

CAUTION : The cutting blades mentioned below should only be re-sharpened by an authorized facility. Manual re-shar pening will result in imbalances of the blade causing abnormal vibrations and damage to the machine.

- Cutter Blade : star blade ( 4 teeth ), eddy blade ( 8 teeth )

An expert service for re-sharpening and balancing is provided by Authorized Service Agents. NOTE :

To increase the service life of the above cutter blade, it may be turned over once until both cutting edges have become blunt.

NYLON CUTTING HEAD

Replacing the nylon cord

1 First, stop the engine.

Press on the housing latches (A) inward to lift off the cover assembly (B).

Then remove the spool (D). 2 Remove any excess nylon cord from the spool. 3 Cut a length of the nylon cord that is approximately 7.5 m ( 25’ ) long. 4 Hook the center of new nylon cord into the notch (F) in the c enter of t he

spool, with one end of the cord extending about 80 mm (3” to 3-1/8”)

more than the other. Then wind both ends firmly around the spool in the

direction of the head rotation. 5 Put the cord ends temporarily into the notched (H) when w inding being

finished. Leave approximate 100 mm (4”) of the cord extended beyond

the notch. 6 Place the spool into the cover. Remove the ends of the cord from the

notches (H) and put them in the metal eyelets (I) on the cover. 7 Mount the spool ( cover-assembly ) in the housing so that the grooves

and protrusions on the spool mach up with those in the housing ( C ).

Then push the cover firmly onto the housing to secure it.

SERVICING INSTRUCTIONS

Before doing any work on the Brush Cutter/String Trimmer, always stop the engine and pull the plug cap off the spark plug.

Always wear protective gloves. Do not attempt to remove the recoil starter by yourself, which may cause an accident. It should be done by the

Authorized Service Agent. To ensure a long service life and to avoid any damage to the machine, the f ollowing servicing operations should be

done at regular intervals.

Daily checkup and maintenance

Before operation, check the machine for loose screws or missing parts. Pay your special attention to the tightness of the cutting tool. Before operation, always check for clogging of the cooling air passage and the cylinder fins. Clean them if necessary. Do the following works daily after use :

- Clean the machine externally and inspect for damage.

- Clean the air filter. When working under extremely dusty conditions, clean the filter several times a day.

- Check the blade or the nylon cutting head for damage and make sure it is firmly mounted.

- Check if there is sufficient difference between idling and engagement speed. Make sure that the cutting tool does not rotate while the engine is idling.

- Check the functioning of the I-O switch, the lock-off lever, the control lever and the lock button.

Cleaning of air-filter

- Remove screw (B).

- Remove the air filter cover (A). Take out the air-filter (C) and clean it in war m

soapy water. Dry the air-filter completely.

- After cleaning, put back the air filter cover and fasten it with the screw. Note :

If there is excessive dust or dirt adhering to the air filter, clean it every day. A clogged air filter may make it difficult or impossible to start the engine or increase the engine rotation-speed.

STOP

Checking the spark plug

Only use the supplied universal wrench to remove or install the spark plug. The gap between the two electrodes of the spark plug should be 0.6 – 0.7 mm ( 0.024” – 0.028” ). If the gap is too

wide or too narrow, adjust it. If the spark plug is clogged with carbon or fouled, clean it completely or replace it. CAUTION :

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

0.6 mm – 0.7 mm

Supply of grease to gear case

Supply grease (Shell Albania 3 or equivalent ) to the gear case through the grease hole every 30 hours.

Suction head in the fuel tank

The fuel filter (A) of the suction head is for filtering the fuel to the carburetor. A periodical visual inspection of this fuel filter is highly recommended. To inspect the fuel filter, open the tank cap and pull out the suction head through the opening of the tank using a wire hook. If the filter is found to have hardened, polluted or clogged up, it should be replaced. Insufficient fuel supply caused by the deteriorated filter will result in the poor performance of the engine. It is therefore important to replace the fuel filter at least quarterly to ensure fuel-supply to the carburetor.

Cleaning of muffler exhaust port

Check the muffler exhaust port (B) regularly. If it is clogged by carbon deposits, scratch out the deposits carefully with a suitable tool.

STORAGE

When the Brush Cutter/String Trimmer is in storage for a long time, 1 Drain all fuel from the fuel tank into a container approved for gasoline.

Run the engine until it stops.

2 Clean all foreign material from the machine and store it in a well-venti-

lated place that is not accessible to children.

MAINTENANCE SCHEDULE

General Engine assembly, screws and nuts Visual inspection for damage and tightness.

After each refueling Control lever

Daily Air filter

Weekly Spark plug

Quarterly Suction head

Yearly (Long Term)

I-O switch

Cooling air duct Cutting tool Idling speed

Muffler

Fuel tank Fuel tank

Carburetor

Check for general condition and security. Functional check

Functional check To be cleaned

To be cleaned Check for damage and sharpness Inspect (Cutting tool does not rotate)

Inspection, replace if necessary Check and clean the opening if necessary

To be replace To be cleaned

Empty fuel tank Operate until engine stops

TROUBLESHOOTING CHART

Trouble System Observation Cause

Engine does not start or hard to start

Warm start problem Tank filled

Engine starts but soon stops

Insufficient performance Several systems Poor engine idling Air filter contaminated, carburetor contaminated, muffler

Ignition system Ignition spark O.K. Failure in fuel supply or compression system, mechanical defect

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, defect ive carb uretor, 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 spri ng, broken par ts inside the engine

Carburetor contaminated or damaged. Clean or replace.

Ignition spark

Fuel supply Tank filled Incorrect idle-adjustment,

Carburetor contaminated Defective tank, fuel supply line interrupted, cable or I-O switch defective.

clogged, exhaust duct in the cylinder clogged

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