Daewoo DMT520 User manual

Manufactured under license of Daewoo International Corporation, Korea
www.daewoopowerproducts.com
USER'S MANUAL
DMT520
Multifunctional brush cutter

INDEX
1. PARTS LOCATION ................................................................................................................................... 2
2. WARNING LABELS ON THE MACHINE ................................................................................................. 2
3. SYMBOLS ON THE MACHINE ............................................................................................................... 3
4. FOR SAFE OPERATION .......................................................................................................................... 3
5. SET UP ..................................................................................................................................................... 9
6. FUEL AND CHAIN OIL .......................................................................................................................... 14
7. OPERATION ........................................................................................................................................... 15
8. OPERATION (OPTIONAL BLADE USAGE) .......................................................................................... 19
9. MAINTENANCE ..................................................................................................................................... 25
10. TROUBLESHOOTING GUIDE ............................................................................................................. 31
11. TECHNICAL SPECIFICATIONS .......................................................................................................... 31
WARRANTY ............................................................................................................................................... 32
1

2
1. PARTS LOCATION
2. WARNING LABELS ON THE MACHINE
(1) Read owners manual before operating this machine.
(2) Wear head, eye and ear protection.
(3) Wear foot protection.
(4) Wear gloves.
(5) Beware of thrown objects.
(6) Warning / Attention
(7) Keep all chlldren, bystanders and helpers 15 meters away from the machlne.
lf warning label peels off or becomes soiled and impossible to read, you should contact the
dealer from which you purchased the product to arder new labels and affix them in the
required location(s).
Never modify your machine.
We won warrant the machine, if you use the remodeled brushcutter or if you don observe the
proper usage written in the manual.
3. SYMBOLS ON THE MACHINE
For sale operation and maintenance, symbols are carved in relief on the machine. According to
these indications, please be careful not to make a mistake.
The port to refuel the IX GASOLINE Position: FUEL TANK CAP
The direction to clase the choke Position: AIR CLEANER COVER
The direction to open the choke Position: AIR CLEANER COVER
lf you turn the rod by screwdriver follow the arrow to the AX position, the chain oil flow
more, and if you turn to the IN position, less.
Position: Bottom of the TRANSMISSION
4. FOR SAFE OPERATION
Air filter
Muffler
Throttle cable
Throttle trigger
Shaft tube
Trimmer blade
Quick joint
Transmission
Transmission
Chain cover
Guard
Nylon head
3T blade
Bar and chain
Suspension
Point
Throttle set button
Loop handle

3
1. PARTS LOCATION
2. WARNING LABELS ON THE MACHINE
(1) Read owners manual before operating this machine.
(2) Wear head, eye and ear protection.
(3) Wear foot protection.
(4) Wear gloves.
(5) Beware of thrown objects.
(6) Warning / Attention
(7) Keep all chlldren, bystanders and helpers 15 meters away from the machlne.
lf warning label peels off or becomes soiled and impossible to read, you should contact the
dealer from which you purchased the product to arder new labels and affix them in the
required location(s).
Never modify your machine.
We won warrant the machine, if you use the remodeled brushcutter or if you don observe the
proper usage written in the manual.
3. SYMBOLS ON THE MACHINE
For sale operation and maintenance, symbols are carved in relief on the machine. According to
these indications, please be careful not to make a mistake.
The port to refuel the IX GASOLINE Position: FUEL TANK CAP
The direction to clase the choke Position: AIR CLEANER COVER
The direction to open the choke Position: AIR CLEANER COVER
lf you turn the rod by screwdriver follow the arrow to the AX position, the chain oil flow
more, and if you turn to the IN position, less.
Position: Bottom of the TRANSMISSION
4. FOR SAFE OPERATION
1. Read this manual carefully until you completely understand and follow all
safety and operating instructions.
2. Keep this manual handy so that you may refer to it later whenever any
questions arise. Also note, if you have any questions which cannot be
answered herein, contact the dealer from whom you purchased the product.
3. Always be sure to include this manual when selling, lending, or otherwise
transferring the ownership of this product.
4. Never allow children or anyone unable to fully understand the directions
given in the manual to use the machine.
WORKING CONDITION
should wear proper clothing and protective equipment.
(1) Helmet
(2) Ear protectors
(3) Protection goggles or face protector
(4) Thick work gloves
(5) Non-slip-sole work boots

4
2. And you should carry with you.
(1) Attached tools
(2) Properly reserved fuel
(3) Spare blade
(4) Things to notify your working area (rope, warning signs)
(5) Whistle (for collaboration or emergency)
(6) Hatchet or saw (far removal of obstacles)
3. Do not wear loase clothing, jewelry, short trousers, sandals, or go bare-
foot. Do not wear anything which might be caught by a moving part of the
unit. Secure hair so it is above shoulder length.
WORKING CIRCUMSTANCE
1. Never start the engine inside a closed room or building. Exhaust gases
contain dangerous carbon monoxide.
2. Never use the product,
a. when the ground is slippery or when you cant maintain a steady posture.
b. At night, at times of heavy fog, or at any other times when your field of
vision might be limited and it would be difficult to gain a clear view of the
working area.
c. During rain storms, during lightning storms, at times of strong or gale-for-
ce winds, or at any other times when weather conditions might make it
unsafe to use the product.
WORKING PLAN
1. You should never use the product when under the influence of alcohol,
when suffering from exhaustion or lack of sleep, when suffering from drow-
siness as a result of having taken cold medicine or at any other time when a
possibility exists that your judgment might be impaired or that you might not
be able to operate the product properly and in a safe manner.
2. When planning your work schedule, allow plenty of time to rest. Limit the
amount of time over which the product is to be used continuously to
somewhere around 30 - 40 minutes per session, and take 10 - 20 minutes of
rest between work sessions. Also try to keep the total amount of work
performed in a single day under 2 hours or less.
WARNING!
1. lf you don't observe the working time, or working manner (See SING THE
PRODUCT ), Repetitive Stress lnjury (RSI) could occur.
lf you feel discomfort, redness and swelling of your fingers or any other part
of your body, see a doctor befare getting worse.
2. To avoid noise complaints, in general, operate product between 8 a.m.
and 5 p.m. on weekdays and 9 a.m. to 5 p.m. on weekends.

5
NOTE!
Check and follow the local regulations as to sound level and hours of
operations far the product.
BEFORE STARTING THE ENGINE
1. The area within a perimeter of 15 m of the person using the product
should be considered a hazardous area into which no one should enter. lf
necessary, yellow warning rope, warning signs should be placed around the
perimeter of the area. When work is to be performed simultaneously by two
or more persons, care should also be taken to constantly look around or
otherwise check for the presence and locations of other people working so
as to maintain a distance between each person sufficient to ensure safety.
2. Check the condition of working area to avoid any accident by hitting
hidden obstacles such as stumps, stones, cans, or broken glass.
IMPORTANT
Remove any obstacle before beginning work.
3. lnspect the entire unit for loose fasteners and fuel leakage. Make sure
that the cutting attachment is properly installed and securely fastened.
4. Be sure the cutting attachment guard is firmly attached in place.
5. Always use the harness. Adjust the strap for comfort be/ore starting the
engine. The strap should be adjusted so the left hand can comfortably hold
the handlebar grip approximately waist high.
STARTING THE ENGINE
Keep bystanders and animals at leas! 15 m away from the operating point. lf
you are approached, immediately stop the engine. The product is equipped
with a centrifuga! clutch mechanism, so the cutting attachment begins to
rotate as soon as the engine is started by putting the throttle into the start
position. When starting the engine, place the product onto the ground in a
flat clear area and hold it firmly in place so as to ensure that neither the
cutting part nor the throttle come into contact with any obstacle when the
engine starts.
WARNING
Never place the throttle into the high-speed position when starting the
englne.
3. Alter starting the engine. check to make sure that the cutting attachment
stops rotating when the throttle is moved fully back to its original position. lf
it continues to rotate even alter the throttle has been moved fully back, turn
off the engine and take the unit to your authorized servicing dealer for repair

6
USING THE PRODUCT
IMPORTANT
Cut only materials recommended by the manufacturer. And use only for
tasks explained in the manual.
1. Grip the handles firmly with both hands using your whole hand. Place
your feet slightly apart (slightly further apart than the width of your shoul-
ders) so that your weight is distributed evenly across both legs, and always
be sure to maintain a steady, even posture while working.
2. Keep cutting attachment below waist level.
3. Maintain the speed of the engine at the level required to perform cutting
work, and never raise the speed of the engine above the level necessary.
4. lf the unit starts to shake or vibrate, turn off the engine and check the
whole unit. Do not use it until the trouble has been properly corrected.
5. Keep all parts of your body away from rotating cutting attachment and
hot surfaces.
6. Never touch the muffler, spark plug, or other metallic parts of the engine
while the engine is in operation or immediately alter shutting down the
engine. Doing so could result in serious burns or electrical shock.
7. Never operate the pruner at an angle greater than 60 in order to reduce
the risk of being struck by falling objects during operation.
WARNING!
Approachlng or contactlng electric power lines with pruning saw may cause
serious injury or death from electrocution.
Electricity can jump from one point to another by means of arcing or may be
conducted through damp branches. Maintain a clearance of at least 15m
between Pole saw and any electrlcal llne carrying live current.
IF SOMEONE COMES
1. Guard against hazardous situations at all times. Warn adults to keep pets
and children away from the area. Be careful if you are approached. lnjury
may result from flying debris.
2. lf someone calls out or otherwise interrupts you while working, always be
sure to turn off the engine befare turning around.
MAINTENANCE
1. In arder to maintain your product in proper working arder, perform the
maintenance and checking operations described in the manual at regular
intervals.
2. Always be sure to turn off the engine and disconnect the spark plug wire
befare perfarming any maintenance or checking procedures.

7
1. Read this manual carefully until you completely understand and follow all
safety and operating instructions.
2. Keep this manual handy so that you may refer to it later whenever any
questions arise. Also note, if you have any questions which cannot be
answered herein, contact the dealer from whom you purchased the product.
3. Always be sure to include this manual when selling, lending, or otherwise
transferring the ownership of this product.
4. Never allow children or anyone unable to fully understand the directions
given in the manual to use the machine.
WORKING CONDITION
should wear proper clothing and protective equipment.
(1) Helmet
(2) Ear protectors
(3) Protection goggles or face protector
(4) Thick work gloves
(5) Non-slip-sole work boots
WARNING!
The metallic parts reach high temperatures immediately after stopping
the engine.
3. When replacing the cutting attachment or any other part, or when repla-
cing the oil ar any lubrican!, always be sure to use only authorized products
or prod-ucts which have been certified by your supplier
4. In the event that any part must be replaced or any maintenance or repair
work not described in this manual must be performed, please contact a
representative from the stare nearest ZENOAH autharized servicing dealer
far assistance.
5. Do not use any accessary ar attachment other than those bearing the
ZENOAH mark and recommended for the unit.
6. Under no circumstances should you ever take apart the product ar alter it
in any way. Doing so might result in the product becoming damaged during
operation or the product becoming unable to operate properly.
HANDLING FUEL
1. The engine of our 4 in 1 product is designed to run on a mixed fuel, which
contains highly flammable gasoline. Never stare cans of fuel or refill the tank
of the unit in any place where there is a boiler, stove, wood fire, electrical
sparks, welding sparks, or any other source of heat ar fire which might
ignite the fuel.
2. Never smoke while operating the unit or refilling its fuel tank.
3. When refilling the tank, always turn off the engine and allow it to cool
down. Take a careful look around to make sure that there are no sparks or
open llames anywhere nearby befare refueling.
4. Wipe spilled fuel completely using a dry rag if any fuel spillage occurs
during refueling.
5. Alter refueling, screw the fuel cap back tightly onto the fuel tank and then
carry the unit to a spot 3 m or more away from where it was refueled befare
turning on the engine.
TRANSPORTATION
1. When hand-carrying the product, cover over the cutting part if necessary,
lift up the product and carry it paying attention to the blade.
2. Never transpart the product over rough roads over long distances by
vehicle without removing all fuel from the fuel tank. lf doing so, fuel might
leak from the tank during transport.

8
1. When you finish cutting in one location and wish to continue work in an ·
other spot, turn off the engine, lift up the unit and carry it paying attention
to the blade.
2 Never forget to place the protective cover over the blades.
3. When hand-carrying the product, cover over the cutting part if necessary,
lift up the product and carry it paying attention to the blade.
4. Never transport the product over rough roads over long distances by
vehicle without removing all fuel from the fuel tank. 11 doing so, fuel might
leak from the tank during transport.
KICKBACK SAFETY PRECAUTIONS FOR CHAIN SAW USERS
WARNING
Kickback may occur when the nose or tip of the guide bar touches an
object, ar when the wood clases in and pinches the saw chain in the cut. Tip
contact in sorne cases may cause a lightning fast reverse reaction,kicking
the guide bar up and back towards the operator. Pinching the saw chain
along the top of the guide bar may push the guide bar rapidly back towards
the operator. Either of these reactions may cause you to lose control of the
saw, which could result in serious personal injury.
Do not rely exclusively on the safety devices built into your saw. As a chain
saw user you should take severa! steps to keep cutting jobs free from
accident or injury.
(1) With a basic undarstanding of kickback you can reduce or eliminate the
element of surprise. Sudden surprise contributes to accidents.
(2) Keep a good grip on the saw with both hands, the right hand on the rear
handle, and the left hand on the front handle, when the engine is running.
Use a firm grip with thumbs and fingers encircling the chain saw handles. A
firm grip will help you reduce kickback and maintain control of the saw.
(3) Make certain that the area in which you are cutting is free from obstruc-
tions. Do not let the nose of the guide bar contact a lag, branch, or any
other obstruction which could be hit while you are operating the saw.
(4) Cut at high engine speeds.
(5) Follow the manufactures sharpening and maintenance instructions for
the saw chain.
(6) Only use replacement bars and chains specified by the manufacturer or
the equivalent.
WARNING
Make sure the chain and sprocket are correctly adjusted befare operating
the pruner (see page 32-35 for adjustment procedures). Never attempt
chain adjustment with the engine running! Always make sure the cutting
attachment is properly installed and firmly tightened befare operation.
Nevar use a cracked or warped guida bar: replace it with a serviceable one
and make sure it fits properly.
lf a saw blade should bind fast in a cut, shut off the engine immediately.

9
Push the branch or tree to ease the bind and free the blade.
Do not operate the pole pruner with the muffler removed.
When cutting a limb that is under tension, be alert for springback so that
you will not be struck by the moving limb. Always stop the engine immedia-
tely and check for damage if you strike a foreign object or if the machine
becomes tangled. Do not operate with broken ar damaged equipment.
IMPORTANT
Do not make unauthorized modifications or substitutions to the guide bar or
chain.
Never allow the engine to run at high RPM without a load. Doing so could
damage the engine.
Keep the pruner as clean as possible. Keep it free of loase vegetation, mud,
etc.
5. SET UP
MOUNTING ENGINE
1. Push the shaft tube toward the clutch housing and rotate it by hand to
check that the drive shaft is engaged with the gears.
2. lnsert the shaft tube into the clutch housing until it bottoms, and align the
positioning holes on the clutch housing and the shaft tube and install the
screw. When difficult to engage, twist the engine slightly.
3. Fasten the clamp securely with two screws.
IMPORTANT
Tighten the screws gradually by turns. C
CONNECTING THROTTLE WIRE
1. Remove the air cleaner cover.
2. Connect the end of the throttle wire to the joint on the top of the carbure-
tor.