Nakayama EM4200 User manual

Instruction Manual
Electric Lawn Mower
EM4200

Safety Instructions
WARNING
Read and understand all instructions. Save these instructions. Failure to follow all instructions listed below may
result in electric shock, fire and/or serious injury. The term ‘power tool’ in all of the warnings below refers to
your mains-operated (corded) power tool.
Intended Use and Reasonably Foreseeable Misuse:
The Lawn mower is intended to be used only for mowing domestic lawns. The Lawn mower has been designed
for use only in private gardens and is not suitable for use in public grounds, parks, sports fields or for
agricultural or forestry purposes. Only mow the lawn when the grass is relatively dry.
Any other use of the lawn mower is considered inappropriate use. The manufacturer shall not be liable for any
damage or injury resulting from misuse.
Only the manufacturer’s approved replacement parts and blades are to be used on the machine. Structural
modifications or use of components not approved by the manufacturer will void the warranty and absolve the
manufacturer of any liability.
Even with the intended use of the lawn mower there is always a residual risk, which cannot be eliminated.
According to the type and construction of the lawn mower the following potential hazards might apply:
- Ejection of stones etc. from the cutting area (Cutting / injection hazards)
- Injury from the exposed blade during maintenance (Cutting hazar)
- Electric shock on contact with non-insulated electric components,
- Loss of hearing If suitable ear protection is not worn
Warning: The actual level of vibration while using the lawn mower may differ from the level specified in this
manual by the manufacturer. The following factors may affect actual level of vibration:
- correct use of the lawn mower
- proper maintenance of the lawn mower
- selected height of cut
- sharpness and balance of blade
Make a work plan so that your exposure to vibration can be limited.
If you experience an unpleasant sensation or skin discoloration while using the lawn mower, immediately stop
working. Take sufficient work breaks to prevent hand-arm vibration syndrome.
Maintain the machine in accordance with the instructions in the manual.
Do not use of the lawn mower at temperatures below10 °C..
1. Training
• Read the instructions carefully. Be familiar with the controls and the correct use of the machine.
• Never allow children or people unfamiliar with these instructions to use the machine. Local regulations can
restrict the age of the operator.
• Never operate the machine while people, especially children, or pets are nearby.
• Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people or
their property.

2. Preparation
• While operating the machine always wear substantial footwear and long trousers. Do not operate the machine
when barefoot or wearing open sandals. Avoid wearing clothing that is loose fitting or that has hanging cords or
ties.
• Thoroughly inspect the area where the machine is to be used and remove all objects which can be thrown by
the machine.
• Before using, always visually inspect the machine to see that the blade, blade bolt and the blade assembly
are not worn or damaged. Replace worn or damaged components in sets to preserve balance. Replace
damaged or unreadable labels.
• Before use check the supply and extension cord for signs of damage or aging. If the cord becomes damaged
during use, disconnect the cord from the supply immediately.
DO NOT TOUCH THE CORD BEFORE DISCONNECTING THE SUPPLY.
Do not use the machine if the cord is damaged or worn.
3. Operation
• Operate the machine only in daylight or in good artificial light.
• Avoid operating the lawn mower in wet grass.
• Always be sure of your footing on slopes.
• Walk, never run.
• Mow across the face of slopes, never up and down.
• Exercise extreme caution when changing direction on slopes.
• Do not mow excessively steep slopes.
•Use extreme caution when reversing or pulling the appliance toward you.
• Stop the blade(s) if the machine has to be tilted for transportation, when crossing surfaces other than grass,
and when transporting the machine to and from the area to be used.
• Never operate the machine with defective guards or shields, or without safety devices, for example deflectors
and/or the grass collector, in place.
• Switch on the motor carefully according to instructions and with feet well away from the blade(s).
• Do not tilt the machine when switching on the motor.
• Do not start the machine when standing in front of the discharge opening.
• Do not put hands or feet near or under rotating parts.
Keep clear of the discharge opening at all times.
• Ensure that the lawn mower is switched off when moving from one work area to another.
• Stop the machine, and remove the plug from the socket. Make sure that all moving parts have come to a
complete stop:
- whenever you leave the machine,
- before clearing blockage or unclogging chute,
- before checking, cleaning or working on the machine,
- after striking a foreign object. Inspect the machine for damage and make repairs before restarting and
operating the machine,
- If the appliance starts to vibrate abnormally
(check immediately).
• If the machine starts to vibrate abnormally:
- immediately inspect for damage,
- replace or repair any damaged parts,
- check for and tighten any loose parts.

4. Maintenance and storage
• Keep all nuts, bolts and screws tight to ensure the machine is in safe working condition.
• Check the grass collector frequently for wear or deterioration.
• During adjustment of the machine be careful to prevent trapping your fingers between moving blades and
fixed parts of the machine.
• Always allow the machine to cool down before storing.
• When servicing the blades be aware that, even though the power source is switched off, the blades can still
be moved.
• Replace worn or damaged parts for safety. Use only genuine replacement parts and accessories.
WARNING
• This appliance is not intended for use by persons(including children) with reduced physical, sensory or mental
capabilities, or lack of experience or knowledge, unless they have been given supervision or instruction
concerning use of the appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play with the appliance.
• This Lawn Mower is designed for the cutting of domestic grass and lawns.
• The Lawn Mower must be fully assembled before connecting to the power supply.
• When using wear robust footwear and suitable outdoor clothing.
• Never put your hands into the underside of the
cutting area when the Lawn Mower is turned on.
• Keep the flexible supply power cable (cord) away from the blades.
• Before use check the supply power cable (cord) for signs of damage or ageing.
• Never operate the appliance with damaged guards or without the guards in place.
• Danger! The cutting blade rotates for some time after the motor has been turned off.
• Never start the Lawn Mower when it is lying on its side.
• When operating always adopt a safe stance and hold the Lawn Mower firmly, away from your body keeping
hands and feet safely away from the cutting head.
• Thoroughly inspect the area to be mown, remove all stones, sticks, string, wire and any other objects that
could hinder your mowing.
• Always be aware of your footing when mowing on slopes.
• Mow across the face of slopes, never up and down.
• Use extreme caution when changing direction on slopes. Be aware of the cable position.
• Do not mow excessively steep slopes where keeping a good footing is difficult.
• Use extreme caution when reversing or pulling the mower towards you.
• Make sure that the power cable is always behind the Lawn Mower and away from the cutting path of the
mower.
• Do not use the Lawn Mower in the rain; never leave the mower out in the rain.
• Avoid mowing wet grass if possible.
• Never pick up or carry the mower while it is
switched on.
• Always turn off the mower and wait for the cutting blades to stop rotating before moving from one area to
another.
• Always turn off and disconnect from the power supply before attempting any cleaning or maintenance work.
• Make sure that the ventilation openings are kept clear of grass cuttings and debris.
• Before using the Lawn Mower and after any impact, check for signs of wear or damage.
• After use disconnect the power supply, clean off the grass cuttings from the top and underside of the mower
head.

• Only use the manufacturer recommended replacement parts and accessories.
• Inspect and maintain the lawnmower regularly and have any repairs required done by an authorized repairer.
• Store in a safe secure place out of the reach of children.
WARNING: Wait until all moving parts are at a complete standstill before touching them.
The cutting blade continues to rotate after the Lawn Mower is switched off, a rotating blade can cause injury.
Electrical Safety
• It is strongly recommended that mains power be supplied to the Lawn Mower through a residual current
device (RCD) having a rated residual current rating not exceeding 30mA.
• Where necessary, use a suitable waterproof extension lead no longer than 25 meters.
• Plugs and connectors must be protected from getting wet.
• Turn off and remove the plug from the socket when leaving the Lawn Mower or when attempting to clear any
debris or blockage.
• Should the supply cable become damaged in any way turn off the mains power supply at the socket and
immediately unplug the cable. When the cable is totally disconnected it can be removed by qualified personnel.
• Do not use in wet conditions. Avoid all contact with water.
• Power tool plugs must match the outlet. Never modify the plug in any way.
• Avoid body contact with earthed or grounded surfaces such as pipes, radiators, ranges and refrigerators.
There is an increased risk of electric shock if your body is earthed or grounded.
• Do not abuse the power cable (cord). Never use the power cable for carrying, pulling or unplugging the lawn
mower. Keep the power cable away from heat, oil, sharp edges or moving parts. Damaged or entangled power
cables increase the risk of electric shock.
• When operating a power tool outdoors, use an outdoor extension power cable suitable for outdoor use. Use of
a power cable suitable for outdoor use reduces the risk of electric shock.
Work Area
• Do not operate lawn mower in explosive atmospheres, such as in the presence of flammable liquids, gases,
or dust. Power tools create sparks which may ignite the dust or fumes.
• Keep children and bystanders away while operating a lawn mower. Distractions can cause you to lose control.
Personal Safety
• Stay alert, watch what you are doing and use common sense when operating a power tool. Do not use a
power tool while you are tired or under the influence of drugs, alcohol, or medication. A moment of inattention
while operating power tools may result in serious personal injury.
• Use safety equipment. Always wear eye protection.
Safety equipment such as a dust mask, non-skid safety shoes, hard hat, or hearing protection used for
appropriate conditions will reduce personal injuries.
• Avoid accidental starting. Ensure the switch is in the off-position before plugging in.
• Carrying power tools with your finger on the switch or plugging in power tools that have the switch on invites
accidents.
• Remove any adjusting key or wrench before turning the tool on. A wrench or a key that is left attached to a
rotating part of the power tool may result in personal injury.
• Do not overreach. Keep proper footing and balance at all times. This enables better control of the power tool
in unexpected situations.
• Dress properly. Do not wear loose clothing or jewellery. Keep your hair, clothing and gloves away from moving
parts. Loose clothes, jewellery or long hair can be caught in moving parts.

Power Tool Use and Care
• Do not force the power tool. Use the correct power tool for your application. The correct power tool will do the
job better and safer at the rate for which it was designed.
• Do not use the power tool if the switch does not turn it on and off. Any power tool that cannot be controlled
with the switch is dangerous and must be repaired.
• Disconnect the plug from the power source before making any adjustments, changing accessories,or storing
power tools. Such preventive safety measure reduce the risk of starting the power tool accidentally.
• Maintain power tools. Check for misalignment or binding of moving parts, breakage of parts and any other
condition that may affect the power tool’s operation. If damaged, have the power tool repaired before use.
Many accidents are caused by poorly maintained power tools.
• Keep cutting tools sharp and clean. Properly maintained cutting tools with sharp cutting edges are less likely
to bind and are easier to control.
• Use the power tool, accessories and tool bits etc., in accordance with these instructions and in the manner
intended for the particular type of power tool, taking into account the working conditions and the work to be
performed. Use of the power tool for operations different from intended could result in a hazardous situation.
Service
Have your power tool serviced by a qualified repair technician using only identical replacement parts.
This will ensure that the safety of the power tool is maintained.
Item Description
1 Motor Assembly
2 Lower Handle
3 Upper Handle
4 Cable clip
5 Securing knob and bolt
6 Height adjustment lever
7 Safety button

8 Trigger ON/OFF switch
9 Grass box
10 Wheel
11
Cable Retaing Hook
Assembly
Assembly of the Lower Handle
To assemble the lower handles proceeds as follows:
• Insert the Lower Handle 2directly into the locating holes on each side of the Motor Assembly 1.
Assembly of the Upper Handle 3 and Cable clip 6
To assemble the Upper Handle proceeds as follows:
• Position the Upper Handle 3 over the lower Handle 2 and align the holes. Push through the two Securing
bolts 5. Screw on the Securing knobs 5 and hand tighten.
• The Securing knob and bolt 5 should be hand tightened only.
Never use a spanner or any other tool to tighten them.
Assembly of the Grass box 9.
To assemble the grass box 9 proceed as follows:
•first, you need align the upper and lower grass box, and combine them, then you turn on the machine rear
cover, align the hook on the 2 sides of back machine with the grass box, put the grass box in the 2 hooks and
then loose the machine rear cover.
All item numbers in bold refer to the illustration on page 10.

Using your Lawn Mower
Connecting your Lawn Mower
Make sure you use extension lead suitable for outdoor use (H05VV-F 2X1.0mm2) fitted to the power supply via
leakage-protective system (RCD).
Connect the lawn mower firstly to the extension lead
and then connect to the power supply.
• Make sure that the supply cable to the Switch Box
7 is fitted to the cable restraint as shown below.
Create a small loop from the cable, push the loop
through the slot of the cable retaining hook 11, place the loop over the hook, then pull the cable.
Starting and Stopping your Lawn Mower
To switch the Lawn Mower on proceed as follows:
• Press and hold in the safety Lock-Off Button located on the Switch Box 7.
• Hold in the Safety Lock-Off Button and pull the Switch Lever upwards towards the handle and hold
in this position.
• The motor will now start.
• Release the Safety Lock-off Button.
• To stop the mower simply release the Switch Lever
and the mower will stop.
Warning: The blades will continue to rotate for some
time after the mower has been switched off. Make sure that the blades have come to complete stop and that
you have disconnected the mower from the power supply before carrying out any maintenance.
Height Adjustment
For height adjustment proceeds as follows:
Warning: Stop, release switch lever and wait until
the motor stops. The blades continues to rotate for a few seconds after the machine is switch off, a rotating
blade can cause injury.
For the first cut of the season, a high cutting adjustment should be selected.

This machine can be set to five height of cut.
I=25mm II=35mm III=45mm IV=55mm V=65mm
• Pull Height adjustment lever to the broadside.
•Push the adjustment lever to the front or back.
• When the adjustment lever is in the front, the height is the toppest, when in the back, the height is the lowest.
Note: For long grass, start mowing with the highest
setting and then gradually reduce the height of cut.
Warning: When mowing, do not allow the motor to labour, particularly in heavy conditions.
When the motor labours the revolutions of the motor will drop and you will hear a change in the motor sound.
When this occurs stop mowing, release the switch lever and raise the height of cut. Failure to
do so could damage the machine.
NOTE: The motor is protected by a safety cut–out switch which is activated when the blade becomes jammed
or if the motor is overloaded. When cut-out occurs, stop mowing and disconnect the lawn mower from the
power supply. Clear any obstruction and wait for a few minutes for the safety cut out switch to reset before
continuing to use the mower. If the mower cuts out again increase the height of cut to reduce the load on the
motor.
NOTE: The temperature of the motor will rise quickly,
if the lawn mower frequently jams. If the motor overheats, the safety cut out switch will operate and will cut off
the power. If this occurs, you will need to disconnect the lawn mower from the power supply and wait for it to
cool down completely. You will need to wait for approximately 1 hour before you can start using the mower
again.
Note: All item numbers in bold refer to the illustration on page 5.
Blade Replacement
• Switch off the lawnmower and disconnect from the mains supply.
• Before replacing the blade it is advisable to thoroughly clean the underside of the machine.
• Always wear work gloves when replacing the blade. Note which way the blade is fitted. Hold the blade firmly
with one hand and using the spanner to remove the blade securing bolt anticlockwise.
Remove the blade and thoroughly clean the area around the shaft.
• To attach the new blade (QT3041 400mm), align
the blade onto the drive shaft ensuring that the mark on the blade is on the outside and the two studs on the
back of the fan are located into the corresponding two holes in the blade. Tighten blade securing bolt clockwise,
do not over tighten.
Check to ensure the blade is located correctly before using the lawnmower

2Grass box:
• The lawnmower is fitted with a grass box. To attach
the grass box, raise the flap on the mower body, align the mounting holes on the grass box with the bulges on
the mower body and press to hear a click.
To remove the grass box, raise the flap on top of the
grass box, lift the grass box upwards to detach grass
box from mower body.
• Warning: Keep the grass box securely attached
to the lawnmower while mowing.