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1. SYMBOLS MARKED ON THE PRODUCT

 

 

Read this instruction book carefully before using the lawn mower and keep it 

 

 

in a safe place for future reference.

 

 

Keep bystanders away.

 

 

Beware of sharp blades. Blades continue to rotate after the motor is switched off.

 

 

Switch off isolator key before adjusting, cleaning and before leaving the product 

 

 

unattended for any period.

 
 

 

The charger is intended for indoor use only.

 

 

Wear hearing and eye protection.

 

 

The machine is protected against ingress of water drop from vertical direction.

 

 

Do not expose to rain or damp conditions.

 

 

Do not operate on inclines greater than 15°.Mow across the face of slopes,

 

 

never up and down.

 

 

Electric shock hazard.

 

 

Wait until all machine components have completely stopped before touching them.

  
  CE 

Marking

 

 

The product meets demands and regulations set by the European Community.

  WEEE 

Marking 

  

CAUTION!

 Unusable power tools do not belong with domestic waste. 

 

 

They must be taken to a communal collecting point for environmentally friendly 

 

 

disposal in accordance with local regulations.

 

Accumulator Disposal:

Old Accumulators and batteries must not be added to household waste, but should be disposed of 
in accordance with the applicable legislation.
Take unusable rechargeable batteries to the dealer’s or community’s battery collection point. 

Disposing of the packaging:

The packaging is made of cardboard and separately labeled foil which is also recyclable. 
Take these materials to a recycling centre. 

Disposing of the packaging:

The packaging is made of cardboard and separately labeled foil which is also recyclable. 
- Take these materials to a recycling centre. 

Battery packs/batteries:

  Li-lon
 

 

Do not dispose of batteries into household waste, water or fire. Battery packs/

 

 

batteries must be collected, recycled or disposed of in an environmentally 

  -friendly 

way.

Only for EC countries:

Defective or dead batteries must be recycled according to the directive 2006/66/EC.

 

 

Noise level marking for model DLM4340Li

 

 

Your tool noise is not more than XXdB.

 

SAFETY ALERT SYMBOL:

 Indicates caution or warning may be used in conjunction with 

other symbols or pictures.

2. GENERAL SAFETY RULES

2.1 General safety regulations for this electrical tool

• 

The equipment is never allowed to be used by children, persons with reduced physical, sensory or 

mental capacities or insufficient experience and knowledge, or persons who are not familiar with the 
instructions.

• 

Children should be supervised so that they do not play with the equipment. Children are not 

allowed to carry out the cleaning or maintenance.

2.2 Safety information for scarifiers and aerators

• 

Check the equipment for damage each time before use. The equipment must never be used if 

damaged and must be placed out of service until completion of repairs by a specialist/our customer 
service.

• 

If the equipment vibrates excessively during operation, switch it off immediately and pull the on-off 

button. Tilt the equipment and examine the scarifier and aerator roller for anything which may have 
caused imbalance and remove it if necessary-be sure to wear gloves for this work to protect your-
self against cuts. If this is not the cause -have the equipment repaired by our customer service.

• 

Or examine the equipment for damage and carry out any necessary repairs to damaged parts. And 

examine the equipment for loose parts and tighten them well.

• 

Both hands must be on the handle when you start the equipment, and the equipment must be 

stood on the ground and must not be tilted.

• 

Safety components must be checked each time before use and must be replaced by our customer 

service if damaged.

 

WARNING: 

Do not touch the teeth before the equipment is disconnected from the power supply and the teeth 
have reached a complete standstill.
Always disconnect from the power supply (e.g. pull out the on-off button).

• 

Whenever you leave the equipment unattended.

• 

Before unblocking a blocked tool.

• 

Before checking, cleaning or carrying out any other work on the equipment.

• 

If a foreign body has been struck; whenever the equipment vibrates abnormally (examine immedia-

tely) 

2.3 Starting up safely for scarifiers and aerators
2.3.1 Instruction

• 

Read the instructions carefully. Familiarize yourself with the operator controls and proper use of 

the equipment.

• 

Never allow children or anyone who is not familiar with these instructions to use the equipment. 

Local regulations may set minimum age requirements for the user.

• 

It should be noted that the user of the equipment is personally responsible for accidents or 

hazards involving other persons or their property.

2.3.2 Preparation

• 

Always wear ear protection and protective goggles when using the equipment, as long as the 

equipment is in operation.

• 

Always wear sturdy, non-slip footwear and long trousers when using the equipment. Never use the 

equipment barefoot or in sandals. Avoid wearing loosely fitting clothes or clothing with hanging 
belts or ties.

• 

Carefully check the ground on which the equipment will be used and remove all objects that could 

be caught up by the equipment and violently flung out.

• 

Only use the equipment in the recommended position and only on a firm, level surface.

• 

Do not use the equipment on paved or graveled surfaces where material that could be catapulted 

out could cause injuries.

• 

Before switching on the equipment, always check all screws ,nuts bolts and other fastenings to 

ensure that they are secure and that all safety devices and protective grilles are in position . worn or 
damaged stickers must be replaced.

• 

Never use the equipment in the direct vicinity of persons – especially children – or animals.

2.3.3 Operation

• 

Work only in broad daylight or in well-lit conditions.

• 

Do not use the equipment on wet grass.

• 

Always maintain good footing, especially on inclines.

• 

Walk, do not run.

• 

Always guide the equipment across slopes, i.e. never straight up or straight down. 

• 

Be particularly careful when you change direction on a slope.

• 

Do not scarify or aerate on overly steep inclines.

• 

Be particularly careful when you turn the equipment around or pull it toward yourself.

• 

Stop the teeth whenever the mower has to be tilted for transporting over areas other than lawns 

and whenever it has to be moved from or to the area you want to work on.

• 

Never use the equipment if the safety devices or safety grilles are damaged, or without the atta-

ched safety devices, e.g. deflectors and/or catch baskets.

• 

Start the motor with caution in accordance with the operating instructions and ensure that your 

feet are far enough away from the teeth. 

• 

Do not tilt the equipment when you start the motor unless the equipment must be raised off of the 

ground a little in order to start it. ln this case, tilt it as little as absolutely necessary and only raise 
the side opposite to that of the user. Always make sure that both hands are in the working position 
before the equipment returns to the ground.

• 

Never transport the equipment while the drive is running.

• 

Never move your hands or feet toward or under any rotating parts. Keep clear of the chute opening 

at all times.

• 

Switch off the motor and pull the on-off button. Make sure that all moving parts have reached a 

complete standstill:
1) whenever you leave the equipment unattended;
2) before you remove any blockages or clogs in the chute;
3) before carrying out any checks, cleaning or other work on the equipment;
4) after the equipment strikes a foreign body. Inspect the equipment for damage and carry out any 
necessary instructions repairs before you restart and use the equipment;
if the equipment begins to experience exceptionally strong;
vibrations, switch it off immediately and check it;
5) search for damage;
6) repair the damaged parts as required;
7) examine the equipment for loose parts and tighten them well.

Never operate the equipment in poor weather conditions, especially if there is a risk of lightning.
Avoid abnormal working postures and always keep your balance so that you maintain a steady 
foothold on inclines at all times.

 

WARNING: 

Do not touch any dangerous moving parts before you have pulled out the safety 

plug and the dangerous moving parts have come to a complete standstill.

 

WARNING: 

Risk of injury from dangerous moving parts!

2.3.4 Maintenance and storage

• 

Make sure that all nuts, bolts and screws are tightened securely and that the equipment is in a safe 

working condition.

• 

Routinely check the catch basket for signs of wear and impaired functionality.

• 

For your own safety, replace Worn or damaged parts without delay.

• 

Remember that on equipments with teeth units, the movement of one teeth unit may result in the 

other teeth units starting to rotate.

• 

While you are adjusting the equipment, take care not to jam your fingers between moving teeth and 

stationary parts of the equipment.

• 

Allow the motor to cool before you put the equipment away for any extended period of time.

• 

While you are carrying out maintenance work on the teeth, it is important to remember that the 

teeth can still be moved even if the drive has been switched off.

• 

For your own safety, replace worn or damaged parts without delay. Use only original spare parts 

and original accessories.

• 

If the equipment is stopped for maintenance, inspection or storage purposes or in order to replace 

an accessory, you must switchoff the drive, pull the safety plug from the equipment and make sure 
that all moving parts have come to a complete standstill. Allow the equipment to cool before carr-
ying out any inspections, adjustment, etc. Treat the equipment with care and keep
it clean.

• 

Keep the equipment where it is out of children's reach.

Service

Have your power tool repaired only by trained personnel using only genuine spare parts. This will 
ensure that your power tool remains safe to use.

Careful handllng and use of cordless equipment

• 

Ensure that the equipment is switched off before you insert the battery. Inserting a battery into an 

electric tool that is switched on can cause accidents.

• 

Only charge the batteries in chargers that are recommended by the manufacturer. A charger that ís 

designed for a certain type of batteries may pose a fire risk if it is used with other types of batteries.

• 

Use only the correct batteries in the electric tools.The use of other batteries may result in injuries 

and a fire risk.

• 

Keep unused batteries away from paper clips, coins, keys, nails, screws and other metallic objects 

that could cause a short circuit between the contacts. A short circuit between the battery contacts 
may cause burns or a fire.

In case of incorrect use, fluid may escape from the battery. Avoid contact with it. If you touch it by 

mistake, rinse the affected area with water. lf you get the fluid in your eyes, also seek medical advi-
ce.Leaking battery fluid can .cause skin irritation or burns.

Additional safety instructions

We pay a great deal of attention to the design of every battery pack to ensure that we supply you 
with batteries which feature maximum power density, durability and safety. The battery cells have a 
wide range of safety devices. Each individual cell is initially formatted and its electrical characteris-
tic curves are recorded. These data are then used exclusively to be able to assemble the best 
possible battery packs. Despite all the safety precautions, caution must always be exercised when 
handling batteries. The following points must be obeyed at all times to ensure safe use. Safe use 
can only be guaranteed if undamaged cells are used. Incorrect handling can cause cell damage.
Important: Analyses confirm that incorrect use and poor care are the main causes of the damage 
caused by high performance batteries.

Safety Advice for Rechargeable Battery and Charger

Use only the battery provided with the lawn mower and the provided charger. 
Protect battery and battery charger from humidity. 
Do not operate the battery charger outdoors. 
When it is not in use or before cleaning and servicing, disconnect the battery charger from the
power supply. 
Take special care of the battery. 
Avoid dropping it onto any hard surface and do not subject it to pressure or any other form of 
mechanical stress. 
Keep the battery away from extreme heat and cold.
Do not open or attempt to repair the battery or the battery charger. If any parts are defective, have 
them repaired by a qualified technician or send them to our service department for repair. 
Only charge the battery at an ambient (surrounding air) temperature between 0ºC and +50ºC. 
A charged battery can be used to power the machine under ambient temperature conditions 

between -20ºC and +70ºC. 
When not in use, store the battery in a dry place between 10ºC and 30ºC.
The battery should be recharged when it fails to produce sufficient power on jobs which were easily 
done previously. DO NOT CONTINUE using product with its battery in a depleted condition.
The battery is not fully charged at the factory. Before attempting to use it, it must be fully charged 
firstly.
 
 

IMPORTANT! DANGER! 

Never short-circuit the battery or expose it to moisture. Do not store it together with any metal parts 
which could short-circuit the contacts. The battery could overheat, start burning or explode.
If any person comes into contact with acid or similar internal fluids or substances contained in the 
battery, wash off these substances immediately with plenty of water. If these substances make 
contact with the eyes, rinse with plenty of water and visit a doctor immediately.

 

WARNING: 

Do not open the battery pack to get the battery out by yourself. 
Do not place the rechargeable battery into fire or water. It can explode. The Rechargeable Battery 
should not be discarded to domestic refuse, regardless of whether used or unused. You should 
return it to a local battery collection point in accordance with Battery Regulations or return them to 
us suitably marked “Used Battery”.

3. GENERAL IDENTIFICATION

1. Upper handle             
2. On-off button           
3. Switch box
4. Locking Lever             
5. Grass catcher          
6. Cable clamp
7. Depth adjusting knob     
8. Battery door            
9. Rear cover 
10. Lower handle           
11.Middle handle           
12. LED display
13. Brake control handle

4. TECHNICAL DATA

Model DSC3840Li
Power: 40v Lithium-Ion battery
No load speed: 3200 rpm
Motor power: Brushless
Deck material: Plastic
Cutting width: 380 mm
Drive type: Hand push
Cutting height: -10 ~ +5 mm, Stepless
Grass bag capacity: 45 L
Front / Rear wheel size: 7" / 6"
Includes: Scarifier blade, raker and grass catcher

5. ASSEMBLY

5.1 Assemble the handle

1. Insert the lower handle into the brackets. (Fig. 2A)
2. Fix the lower handle into the unit body with locking levers, bolts and washers.(Fig. 2B)
3. Connect the middle handle and the lower handle with locking levers, bolts and washers.(Fig. 2C)
4. Connect the upper handle and the middle handle with locking levers, bolts and washers.(Fig. 2D)
5. Attach the cable clamp to the position shown and then attach the cable. (Fig. 2E)

Fig. 2J                                   

Fig. 2K                                 

Fig. 2L                                

Fig. 2G                                   

Fig. 2H                                   

Fig. 2I                                   

5.2 Assemble the optional grass catcher

1. Push both metal frame parts into each other .(Fig. 2G)
2. Pull the cloth bag over the metal frame .(Fig. 2H)
3. Pull the rubber clips over the metal frame. (Fig. 2I)
To fit: Raise the rear cover and hitch the grass catcher on rear of mower. (Fig. 2J/ Fig. 2K/ Fig. 2L).
To remove: Grasp and lift the rear cover, remove grass catcher.

 

WARNING:

 Before you ever hook the grass catcher to the scarifier you must ensure that the 

motor is switched off and the cutting unit is not rotating.

5.3 Assemble the battery

1. Make sure the On-off button is pulled out. (Fig. 2M)
2. Open the battery door. (Fig. 2N)
3. Insert the battery pack into battery holder. (Fig. 2O)
4. Make sure the latch on bottom of battery pack snaps in place and that battery pack is fully 
seated. 
5. Close the battery door. (Fig. 2P)

 

5.4 Remove the battery 

1. Open the battery door.
2. Press and hold the battery latch button at the bottom of the battery pack. (Fig. 2Q)
3. Remove battery pack from the product. (Fig. 2R)

5.5 Adjustment for an appropriate height

1. Pull the locking lever opening;
2. Rotating the upper handle centered of the angle adjusting gear for adjusted an appropriate angle 
into the scope 0º to 18º as the Fig. 2S shown;
3. Push the locking lever closed to connect the lower handle and the unit body.

6. ADJUSTING THE STEPLESS WORKING DEPTH

The stepless working depth is set with depth adjusting knob, the depth can be adjusted from -10mm 
to +5 mm.(Fig. 3A/ Fig. 3B)

 

WARNING:

 Make this adjustment only when the blade is stopped.

7. OPERATING INSTRUCTIONS
 

7.1 Starting

Insert the On-off button. (Fig. 4A)
Start the motor as follows:
1. Press the On-off button. (Fig. 4B)
2. And meanwhile, grasp the brake control handle and keep it in grasp. (Fig. 4C)
3. After the motor is running, then release the On-off button (Fig. 4D)
4. If you release the brake control handle, the motor will stop.

 

CAUTION!

 The blade starts turning as soon as the motor is started.

 

WARNING! 

Cutting elements continue to rotate after the motor is switched off.

7.2  LED 

Please refer to the following table for the meaning of LED display. (Fig. 4E)

7.3 Tips for proper working

It is recommended that you overlap scarifying paths a little.
Try to scarify in straight lines for a nice, clean look

In so doing, the aeration swaths should always 

overlap each other by a few centimeters in order to avoid bare strips. 
If you use the grass catcher which is available as an option, it has to be emptied as soon as grass 
clippings start to trail behind during scarifying.

 

DANGER! 

Before taking off the grass catcher, switch off the motor and wait until the roller 

has come to a stop. 
To remove the grass catcher, lift up the rear cover with one hand, while unhooking the grass catcher 
with the other.
How frequently you should scarify your lawn is determined primarily by the speed at which the grass 
grows and the hardness of the soil.
Keep the underside of the equipment clean and remove soil and grass build-up. Deposits make it 
more difficult to start the aeralor and decrease thquality of the scarifying.
Always scarify along inclines (not up and down).
Switch off the motor before doing any checks on the roller.

 

DANGER!

The roller rotates for a few seconds after the motor is switched off. Never attempt 

to stop the roller. In the event that the rotating roller strikes an object, immediately switch off the 
equipment and wait for the roller to come to a complete stop. Then inspect the condition of the 
roller. 

Tips on aerating properly with the aerator roller available as an option.
The way of working lor aerating is the same as for scarifying.
You should therefore observe these safety instructions and notes on working practice.

8. REPLACEMENT OF THE ROLLER

 

WARNING: 

Be sure to wear work gloves.

The equipment can be assembled with the scarifying roller or the aerator roller.
Only replace the roller with an original DAYE roller, as this will ensure top performance and safety 
under all conditions.
To change the scarifying roller or the aerator roller  (DAYE 2425200001),which is available as an 
option, proceed as follows:

Remove the roller

1. Remove the two screws. (Fig. 5A)
2. Lift the roller on this side and pull out in the direction of the arrow. (Fig. 5B)

Assemble the roller

1.Slide the new roller in the direction of the arrow onto the square-ended drive and press into the 
holder. (Fig. 5C/ Fig. 5D)
2. Refasten the roller with the two screws.
Apply grease to the square-ended drive from time to time so that the rollers can be changed easily.

 

WARNING: 

Remove the battery from the machine.

9. CLEANING AND MAINTENANCE

 

DANGER:

 Always pull out the on-off button before performing any adjusting, repair, mainte-

nance or cleaning work on the equipment. Make sure that the spike drum is not rotating.

9.1 Cleaning

• Keep all safety devices, air vents and the motor housing free of dirt and dust as far as possible. 
Wipe the equipment with a clean cloth or blow it with compressed air at low pressure.
• We recommend that you clean the device immediately each time you have finished using it.
• Clean the equipment regularly with a moist cloth and some soft soap. Do not use cleaning agents 
or solvents; these could at tack the plastic parts of the equipment. Ensure that no water can seep 
into the device. The ingress of water into an electric tool increases the risk of an electric shock.

9.2 Maintenance

• A worn out or damaged cutting unit should be replaced by an authorised expert.
• Take care that all fastening elements (screws. nuts, etc.) are firmly tightened, so that you can work 
safely with the scarifier and aerator.
• Store the scarifier and aerator in a dry place.
• For longer life, all screw-fastened parts, such as wheels and axles should be cleaned and subse-
quently oiled.
• Regular servicing of the scarifier and aerator not only secures longer endurance and performance, 
but also contributes to an accurate and simple scarification of your lawn.
• At the end of the season, carry out a general check of the scarifier and aerator, and remove all 
residue collected. Before the start of every season, it is absolutely necessary to check the state of 
the scarifier and aerator. Contact our customer service if repair work is necessary.

10. STORAGE AND TRANSPORT

Storage

Store the equipment and accessories out of children’s reach in a dark and dry place at above 
freezing temperature. The ideal storage temperature is between 5 and 30 . Store the machine in its 
original packaging.

Transport

• Switch the machine off and isolate it from the power supply before transporting it.
• Fit the shipping protectors if any.
• Protect the machine from damage and the strong vibrations that can occur particularly when 
transporting in vehicles.
• Secure the machine against slipping and tipping over.

11.TROUBLESHOOTING

IMPORTANT NOTICE!

 To protect the motor it is equipped with a thermal overload switch which cuts 

out when overloaded, release the brake control handle, restart the machine after a short coo-
ling-down period.

12. ENVIRONMENTALLY FRIENDLY DISPOSAL

According to EU directive 2012/19/EU on electric and electronic equipment and its implementation 
into national law, all electric tools must be separately collected and environmentally friendly recy-
cled. Alternative disposal: If the owner of the power tool does not return the tool to the manufactu-
rer, he is responsible for proper disposal at a designated collection point that prepares the device 
for recycling according to national recycling laws and regulations.
This does not include accessories and tools without electric or electronic components.

Summary of Contents for DSC3840Li

Page 1: ...Manufactured under license of Daewoo International Corporation Korea www daewoopowerproducts com USER S MANUAL DSC3840Li Lithium Scarifier and Raker...

Page 2: ...IDENTIFICATION 7 4 TECHNICAL DATA 8 5 ASSEMBLY 8 6 ADJUSTING THE WORKING DEPTH 11 7 OPERATING INSTRUCTION 11 8 REPLACEMENT OF THE ROLLER 14 9 CLEANING AND MAINTENANCE 15 10 STORAGE AND TRANSPORT 15 1...

Page 3: ...and eye protection The machine is protected against ingress of water drop from vertical direction Do not expose to rain or damp conditions Do not operate on inclines greater than 15 Mow across the fac...

Page 4: ...1 General safety regulations for this electrical tool The equipment is never allowed to be used by children persons with reduced physical sensory or mental capacities or insufficient experience and k...

Page 5: ...on Always wear sturdy non slip footwear and long trousers when using the equipment Never use the equipment barefoot or in sandals Avoid wearing loosely fitting clothes or clothing with hanging belts o...

Page 6: ...itch it off immediately and check it 5 search for damage 6 repair the damaged parts as required 7 examine the equipment for loose parts and tighten them well Never operate the equipment in poor weathe...

Page 7: ...instructions We pay a great deal of attention to the design of every battery pack to ensure that we supply you with batteries which feature maximum power density durability and safety The battery cel...

Page 8: ...r internal fluids or substances contained in the battery wash off these substances immediately with plenty of water If these substances make contact with the eyes rinse with plenty of water and visit...

Page 9: ...grass catcher 5 ASSEMBLY 5 1 Assemble the handle 1 Insert the lower handle into the brackets Fig 2A 2 Fix the lower handle into the unit body with locking levers bolts and washers Fig 2B 3 Connect th...

Page 10: ...Fig 2K Fig 2L To remove Grasp and lift the rear cover remove grass catcher WARNING Before you ever hook the grass catcher to the scarifier you must ensure that the motor is switched off and the cutti...

Page 11: ...Fig 2N Fig 2O Fig 2Q Fig 2R Fig 2P 5 4 Remove the battery 1 Open the battery door 2 Press and hold the battery latch button at the bottom of the battery pack Fig 2Q 3 Remove battery pack from the prod...

Page 12: ...ING DEPTH The stepless working depth is set with depth adjusting knob the depth can be adjusted from 10mm to 5 mm Fig 3A Fig 3B WARNING Make this adjustment only when the blade is stopped 7 OPERATING...

Page 13: ...se refer to the following table for the meaning of LED display Fig 4E Lawn mower status Battery pack capacity indicator status Press POWER button 1 Green light 2 The battery pack capacity is between 7...

Page 14: ...wn is determined primarily by the speed at which the grass grows and the hardness of the soil Keep the underside of the equipment clean and remove soil and grass build up Deposits make it more difficu...

Page 15: ...ifying roller or the aerator roller DAYE 2425200001 which is available as an option proceed as follows Remove the roller 1 Remove the two screws Fig 5A 2 Lift the roller on this side and pull out in t...

Page 16: ...at you can work safely with the scarifier and aerator Store the scarifier and aerator in a dry place For longer life all screw fastened parts such as wheels and axles should be cleaned and subse quent...

Page 17: ...rding to national recycling laws and regulations This does not include accessories and tools without electric or electronic components Fault Possible causes Rectification Motor does not sta rt a Inter...

Page 18: ...www daewoopowerproducts com Manufactured under license of Daewoo International Corporation Korea...

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