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Dolmar
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MS-24 U

Dolmar MS-24 U Original Instruction Manual

MS-24 U
Original Instruction Manual Originalbedienungsanleitung
Important:
Read this instruction manual carefully before putting the brush cutter/string trimmer into operation and strictly observe the safety regulations! Preserve instruction manual carefully!
Wichtlg:
2
Thank you very much for purchasing the 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 Page
Symbols .........................................................................2
Safety instructions .........................................................3
Technical data................................................................7
Designation of parts.......................................................8
Assembly of engine and shaft .......................................9
Mounting of handle ......................................................10
Mounting of protector...................................................11
Mounting of cutter blade or nylon cutting head............12
Fuels/Refuelling ..........................................................13
Correct handling of machine........................................14
Points in operation and how to stop ............................15
Resharpening the cutting tool ......................................16
Servicing instructions...................................................18
Storage ........................................................................20
You will note the following symbols when reading the instructions manual.
SYMBOLS
English
(Original instructions)
Read instruction Manual
Wear eye and ear protection (for string trimmer only)
Take Particular care and Attention
Wear protective helmet, eye and ear protection (for brush cutter only)
Forbidden
Do not use metal blades (for string trimmer only)
Keep distance Top permissible tool speed
Flying object hazard Fuel and oil mixture
No Smoking Engine-Manual start
No open ame Emergency stop
Protective gloves must be worn First Aid
Kickback Beware of blade thrust
ON/START
Keep the area of operation clear of all persons and pets
OFF/STOP
Wear sturdy boots with non-slip soles. Steel toed safety boots are recommended.
3
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
insufciently informed 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 trimmers.
Always hand over the instruction manual.
First users should ask the 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 qualied trainer.
Use brush cutter/string trimmers with the utmost care and attention. – Operate the brush cutter/string trimmer 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.
National regulation can restrict the use of the machine. –
WARNING: This power tool produces an electromagnetic eld during
operation.
This eld may under some circumstances interfere with active or
passive medical implants. To reduce the risk of serious or fatal injury, we recommend persons with medical implants to consult their physician and the medical implant manufacturer before operating this machine.
Intended use of the machine
The brush cutter/string trimmer is only intended for cutter 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 appropriate, i.e. it should be tight- –
tting 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 the helmet (or alternatively goggles) protects the face from –
ying debris and stones. During operation of the brush cutter/string trimmer
always wear goggles, or a visor to prevent eye injuries. Wear adequate noise protection equipment to avoid hearing impairment (ear –
muffs (3), ear plugs etc.). The work overalls (4) protect against ying stones and debris. We strongly –
recommend that the user wears work overalls. Special gloves (5) made of thick leather are part of the prescribed equipment –
and must always be worn during operation of the brush cutter/string trimmer. When using the brush cutter/string trimmer, always wear sturdy shoes (6) –
with a non-slip sole. This protects against injuries and ensures a good footing.
Residual risks Even when the power tool is used as prescribed it is not possible to eliminate all residual risk factors. The following hazards may arise in connection with the power tool’s construction and design:
1. Damage to lungs if an effective dust mask is not worn.
2. Damage to hearing if effective hearing protection is not worn.
3. Damages to health resulting from vibration emission if the power tool is being
used over longer period of time or not adequately managed and properly maintained.
Starting up the brush cutter
Please make sure that there are no children or other people within a working – range of 15 meters (50 ft), 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 speed is not allowed. Check with your – dealer for adjustment if in doubt. Check for clean and dry handles and test the function of the start/stop switch.
15 Meters
Diagrammatic gure
SAFETY INSTRUCTIONS
4
Start the brush cutter/string trimmer only in accordance with the instructions.
Do not use any other methods for starting the engine! – Use the brush cutter/string trimmer and the tools only for such applications as –
specied.
Only start the brush cutter/string trimmer engine, after the entire assembly – is done. Operation of the device 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 revolve 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 switch off –
the engine and inspect the cutting tool. Inspect the cutting tool at short regular intervals for damage (detection of –
hairline cracks by means of tapping-noise test). Operate the brush cutter/string trimmer only with the shoulder strap attached –
which is to be suitably adjusted before putting the brush cutter/string trimmer into operation. It is essential to adjust the shoulder strap according to the user’s size to prevent fatigue occurring during use. Never hold the cutter with one hand during use.
During operation always hold the brush cutter/string trimmer 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 when resting and when leaving the brush cutter/string – trimmer unattended, and place it in a safe location to prevent danger to others or damage to the machine.
Never put the hot brush cutter/string trimmer onto dry grass or onto any – combustible materials.
The cutting tool has to be equipped with it’s appropriate guard. –
Never run the cutter without this guard!
All protective installations and guards supplied with the machine must be – used during operation.
Never operate the engine with faulty exhaust mufer. – Shut off the engine during transport. – When transporting the equipment, always attach the cover to the cutting blade. – Ensure safe position of the brush cutter/string trimmer during car –
transportation to avoid fuel leakage. When transporting the brush cutter/string trimmer, ensure that the fuel tank is –
completely empty. When unloading the brush cutter/string trimmer from the truck, never drop the –
Engine to the ground or this may severely damage the fuel tank. Except in case of emergency, never drop or cast the brush cutter/string –
trimmer to the ground or this may severely damage the brush cutter/string trimmer.
Remember to lift the entire equipment from the ground when moving the – equipment. Dragging the fuel tank is highly dangerous and will cause damage
and leakage of fuel, possibly causing re.
If the equipment gets heavy impact or fall, check the condition before – continuing work. Check the fuel system for fuel leakage and the controls and safety devices for malfunction. If there is any damage or doubt, ask our authorized service center for the inspection and repair.
Refuelling
Shut off the engine during refuelling, keep away from open ames and do not – smoke.
Avoid skin contact with mineral oil products. Do not inhale fuel vapor. Always – wear protective gloves during refuelling. Change and clean protective clothing at regular intervals.
Take care not to spill either fuel or oil in order to prevent soil contamination – (environmental protection). Clean the brush cutter/string trimmer immediately after fuel has been spilt.
Avoid any fuel contact with your clothing. Change your clothing instantly if –
fuel has been spilt on it (to prevent clothing catching re).
Inspect the fuel cap at regular intervals making sure that it can be securely – fastened and does not leak.
Carefully tighten the fuel tank cap. Change location to start the engine (at – least 3 meters away from the place of refuelling).
Never refuel in closed rooms. Fuel vapors accumulate at ground lever (risk of – explosions).
Only transport and store fuel in approved containers. Make sure the fuel – stored is not accessible to children.
• Resting
• Transport
• Refuelling
• Maintenance
• Tool Replacement
3 meters
5
Method of operation
Only use the – brush cutter/string trimmer in good light and visibility. During the winter season beware of slippery or wet areas, ice and snow (risk of slipping). Always ensure a safe footing.
Never cut above waist height. – Never stand on a ladder and run the – brush cutter/string trimmer. Never climb up into trees to perform cutting operation with the – brush cutter/
string trimmer. Never work on unstable surfaces. – Remove sand, stones, nails etc. found within the working range. –
Foreign particles may damage the cutting tool and can cause dangerous kick-backs.
Before commencing cutting, the cutting tool must have reached full working – speed.
Take a rest to prevent loss of control caused by fatigue. We recommend to – take a 10 to 20-minute rest every hour.
If grass or branches get caught between the cutting tool and guard, always – stop the engine before cleaning. Otherwise unintentional blade rotation may cause serious injury.
Caution: Kickback
Diagrammatic
gure
Diagrammatic
gure
Kickback (blade thrust)
When operating the brush cutter, uncontrolled kickback may occur. – This is particularly the case when attempting to cut within a blade segment –
between 12 and 2 o’clock. Never apply the brush cutter within a segment between 12 and 2 o’clock. – Never apply this segment of the brush cutter blade to solids, such as bushes –
and trees, etc., having a diameter in excess of 3 cm or the brush cutter will be
deected at great force with the risk of injuries.
Kickback prevention
To avoid kickbacks, observe the following:
Operation within a blade segment between 12 and 2 o’clock presents positive – hazards, especially when 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.
Maintenance instructions
Have your equipment serviced by our authorized service center, always using – only genuine replacement parts. Incorrect repair and poor maintenance can shorten the life of the equipment and increase the risk of accidents.
The condition of the cutter, in particular of the cutting tool of the protective – devices and also of the shoulder strap must be checked before commencing work. Particular attention is to be paid to the cutting blades which must be correctly sharpened.
Turn off the engine and remove spark plug connector when replacing or – sharpening cutting tools, and also when cleaning the cutter or cutting tool.
Cutting Tools
Employ only the correct cutting tool for the job in hand.
MS-24 U with cutter blade (Star Blade (4 teeth)) or Nylon cutting head.
Never use other blades including metal multi-piece pivoting chains and ail
blades. Otherwise serious injury may result. For cutting thick materials, such as weed, high grass, bushes, shrubs, underwood, thicket etc. (max. 2 cm dia. thickness). Perform this cutting work by swinging the brush cutter evenly in half-circles from right to left (similar to using a scythe).
6
Never straighten or weld damaged cutting tools.
Operate the – brush cutter/string trimmer with as little noise and contamination as possible. In particular check the correct setting of the carburetor.
Clean the – brush cutter/string trimmer at regular intervals and check that all screws and nuts are well tightened.
Never service or store the brush cutter/string trimmer in the vicinity of naked –
ames.
Always store the brush cutter/string trimmer in locked rooms and with an – emptied fuel tank.
When cleaning, servicing and storing the equipment, always attach the cover – to the cutting blade.
Observe the relevant accident prevention instructions issued by the relevant trade associations and by the insurance companies. Do not perform any modications 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 the instruction manual. All other work is to be done by an Authorized Service Agent. Use only genuine spare parts and accessories released and 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 xing devices of cutting tools, or accessories.
Vibration
People with poor circulation who are exposed to excessive vibration may – experience injury to blood vessels or the nervous system. Vibration may
cause the following symptoms to occur in the ngers, hands or wrists: “Falling
asleep” (numbness), tingling, pain, stabbing sensation, alteration of skin color or of the skin. If any of these symptoms occur, see a physician!
To reduce the risk of “white nger disease”, keep your hands warm during – operation and well maintain the equipment and accessories.
First Aid
In case of accident make sure that a rst-aid box is available in the vicinity of the cutting operations. Immediately replace any item taken from the rst aid box.
When asking for help, please give the following information:
Place of accident – What happened – Number of injured persons – Kind of injuries – Your name –
For European countries only
EC Declaration of Conformity
The undersigned, Tamiro Kishima and Rainer Bergfeld, as authorized by Dolmar GmbH, declare that the DOLMAR machine (s) :
Designation of Machine: Brush Cutter/String Trimmer Model No./ Type: MS-24 U
Specications: see “TECHNICAL DATA” table
are of series production and
Conforms to the following European Directives:
2000/14/EC, 2006/42/EC
And are manufactured in accordance with the following standards or standardized documents:
EN ISO 11806-1, EN ISO 14982
The technical documentation is on le at:
Dolmar GmbH, Jenfelder Straße 38, Abteilung FZ, D-22045 Hamburg
The conformity assessment procedure required by Directive 2000/14/EC was in Accordance with annex VI.
Max. sound power values: 108.93 dB (A) Max. guaranteed sound power values: 114 dB (A)
28. 12. 2011
Tamiro Kishima
Managing Director
Rainer Bergfeld
Managing Director
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TECHNICAL DATA MS-24 U
Model MS-24 U
Engine model 1E34F
Engine displacement 24.5 cm³
Maximum engine performance 0.73 kW max.
Engine speed at recommended max.
9,700/min max. (Blade)
8,200/min max. (String-head)
Cutting Width:
230 mm (Blade)
430 mm (String-head)
Idling speed 3,000/min ± 100/min
Clutch engagement speed 4,100/min ± 300/min
Gear ratio 14/19
Fuel
Mixed gas
Gasoline: Two-stroke Engine Oil = 50:1
Volume (fuel tank) 0.5 L
Vibration (tested according to ISO 22867): Max. a
h
= 4.599 m/s2 K = 1.5 m/s
2
Noise (tested according to ISO 22868):
Max. sound pressure values (operator position): LpA: 96.70 dB (A); KpA = 2.5 dB (A)
Max. sound power values: L
wA
: 108.93 dB(A); KwA = 2.5 dB (A)
Noise (tested according to 2000/14/EC, amended by 2005/88/EC): Max. guaranteed sound power values
L
wA
: 114 dB (A)
Mass (without plastic guard and cutting blade) 4.5 kg
8
DESIGNATION OF PARTS
(7)
(3)
(19)
(1)
(21)
(6)
(23)
(2)
(20)
(22)
(5)
(16)
(13)
(14)
(15)
(17)
(14)
(15)
(13)
(11)
(4)
(9)
(12)
(7)
(8)
(10)
(16)
(18)
(10)
(7)
(4)
(9)
(11)
GB DESIGNATION OF PARTS
1 Fuel Tank 2 Rewind Starter 3 Air Cleaner 4 I-O Switch (on/off) 5 Spark Plug 6 Exhaust Mufer 7 Clutch Case 8 Waist Pad
9 Hanger 10 Handle 11 Control Lever 12 Control Cable 13 Shaft 14 Protector (Cutting tool guard) 15 Gear Case 16 Handle Holder 17 Cutter Blade 18 Nylon Cutting Head 19 Fuel Filler Cap 20 Starter Knob 21 Primer Pump 22 Choke Lever 23 Exhaust Pipe
9
CAUTION: Before doing any work on the string trimmer, always switch off the
motor and pull the spark plug connector off the spark plug. Always wear protective gloves.
CAUTION: Start the string trimmer only after having assembled it completely.
Loosen the two bolts (1) and insert the main pipe (2) into the case clutch (3). – Insert it up to the arrow-mark position. (Refer to the sketch on the right.) –
If it is difcult to insert, turn the spline (4) a little and re-insert.
Tighten the two bolts (1) uniformly on the right and left by Allen wrench – supplied.
How to mount the control cable
Remove the air cleaner cover. – Put the control cable (5) into the adjusting cable (6). Shift the swivel (7) and –
put the cable into the swivel. At this time, be careful that the round hole in the
swivel is oriented toward the tting at the inner wire end. Release the swivel and make sure that the inner wire tting is placed in the –
hole. Mount the air cleaner cover. –
Connection of the switch cord
Connect the switch cords to the two cords from the engine by inserting one – into the other.
Fix the cord connector by clamp. –
ASSEMBLY OF ENGINE AND SHAFT
(1)
(6)
(7)
Swivel
End tting
Connector
Control cable
Round hole
(5)
(4)
(3)
(2)
Arrow-mark
10
CAUTION: Before doing any work on the brush cutter, always stop the engine
and pull the spark plug connector off the spark plug. Always wear protective gloves! CAUTION: Start the brush cutter only after having assembled it completely.
For machines with U Handle models
Place the handle-xing 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-xing material to the handle end. Fix provisionally – the attached metal by hexagon socket bolt supplied.
Adjust the handle to an easy-to-operate position, and tighten securely the – four hexagon socket bolts uniformly on the right and left by Allen wrench.
MOUNTING OF HANDLE
Throttle cable of control lever assembly instructions
Step one: Surround the throttle cable (1) which comes from carburetor along – the engine cylinder cover in accordance with the direction which is away from the operator, and wrap it by waist pad (2) along the opposite side of the pipe operator.
Step two: Insert the throttle cable (1) of control lever into the clamping slot (3) – of lower splint of handle holder.
CAUTION: After waist pad is packed, the redundant throttle cable close to the
engine side can not be curved which can cause phenomenon of too high idle speed and the blade can not stop, see right photo.
(2)
L
R
(1)
(1)
(3)
11
To meet the applicable safety provisions, only the tool/protector combinations as indicated in the table must be used.
Be sure to use genuine DOLMAR cutter blades or nylon cutting head.
The cutter blade must be well polished, free of cracks or breakage. If the – cutter blade hits against a stone during operation, stop the engine and check the blade immediately.
Polish or replace the cutter blade every three hours of operation. – If the nylon cutting head hits against a stone during operation, stop the –
engine and check the nylon cutting head immediately.
Star Blade
Nylon cutting headProtector for metal blades Protector for cord cutter
MOUNTING OF PROTECTOR
CAUTION: The appropriate protector must always be installed, for your own
safety and in order to comply with accident-prevention regulations.
Operation of the equipment without the guard being in place is not
permitted.
(1)
(3)
(2)
(1)
(4)
(6)
(5)
When using the string head, t the protector (6) into the protector (1), and – tighten them with two nuts (5) and two screws (4).
Fix the protector (1) to the clamp (3) with two bolts M6 x 30 (2). –
12
Turn the machine upside down, and you can replace the cutter blade or the nylon cutting head easily.
Insert the hex wrench through the hole in the gear case and rotate the – receiver washer (3) until it is locked with the hex wrench.
Loosen the nut (1) (left-hand thread) with the socket wrench and remove the – nut (1), and clamp washer (2).
Rotation
Hex wrench
MOUNTING OF CUTTER BLADE OR NYLON CUTTING HEAD
With the hex wrench still in place.
Mount the cutter blade onto the shaft so that the guide of the receiver washer –
(3) ts in the arbor hole in the cutter blade. Install the clamp washer (2) and
secure the cutter blade with the nut (1). [Tightening torque: 13 - 23 N-m]
NOTE: Always wear gloves when handling the cutter blade. NOTE: The cutter blade-fastening nut (with spring washer) is a consumable
part. If there appears any wear or deformation on the spring washer, replace the nut.
NOTE: The clamp washer (2), and nut (1) are not necessary for mounting the
nylon cutting head. The nylon head should go on top of the receiver washer (3).
Make sure that the blade is the left way up. –
Screw the nylon cutting head onto the shaft. –
Loosen
Loosen
Tighten
(2)
(1)
(3)
Tighten
Hex wrench
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