
PETROL LAWNMOWER
HYM400P
Instruction Manual

Introduction
Thank You For Purchasing Your HYUNDAI Product
We work very hard to give all of our customers the best possible service. If you have any
problems, before leaving negative feedback, please contact us to give us a chance to resolve
the issue. We would be delighted if you left us positive feedback! Thank you for purchasing this
product.
Important!
This manual has been produced by Hyundai Power Products and should be kept with the
product. Please read and understand these instructions before you use your product. Failure to
do this may result in personal injury or damage to the product.
The safety precautions and warnings are to ensure your safety and protect you from harm or
damage to the product.
The information contained in this manual was accurate at the time of production, however
HYUNDAI Power Products may make modifications to the product without notification.
WARNING : READ THE INSTRUCTION BOOKLET THOROUGHLY BEFORE
USING THE MACHINE. Keep for future reference and pass it on if the machine is
loaned or sold to another user.
!
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Contents
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Safety Information.....................4-19
Understand Your Machine...............................4
Personal Safety................................................5
Inspect Your Machine......................................6
Work Area........................................................7
During Use....................................................8-9
Engine Safety.................................................10
Carbon Monoxide...........................................11
Fuel Safety................................................12-13
Batteries.........................................................14
Electrical Safety..............................................15
Vibrations........................................................16
Noise..............................................................16
Personal Protective Equipment......................17
Intended Use..................................................18
Symbols On The Machine..............................19
Features....................................20-21
Unboxing........................................22
Assembly..................................23-27
Assembly Safety.............................................23
Assemble Handlebars...............................24-25
Cable Attachment...........................................26
Grass Collector Assembly..............................27
Cable Clips.....................................................27
Operation..................................30-33
Useful Information........................56
Our YouTube Channel....................................56
Warranty.........................................................56
Manual Updates.............................................56
Returning Your Product..................................56
Leaving A Review...........................................56
Ordering Spare Parts......................................56
Contact Us.....................................59
Troubleshooting............................45
Technical Data..............................46
Spare Parts...............................47-51
Notes.........................................52-53
Recycling And Disposal................54
Declaration Of Conformity...........55
Preparation...............................28-29
Adding Oil......................................................28
Checking Oil Level.........................................28
Adding Fuel....................................................29
Cutting Height Adjustment.............................30
General Mowing Tips.....................................31
Recommended Mowing Schedule.................31
Starting / Stopping..................32-34
Maintenance.............................35-44
Maintenance Safety........................................35
Checking Your Machine.................................35
Cleaning..........................................................36
Transportation................................................37
Storage......................................................38-39
Blade Maintenance........................................40
Air Filter..........................................................41
Spark Plug.....................................................42
Cleaning / Draining Oil...................................43
Fuel And Carburetor.......................................43
OPC Cable Adjustment..................................44
Our Product Range.......................57
Product Information......................58
Service Record...............................................58

Safety Information
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Understand Your Machine
• WARNING! You must read these instructions carefully before operating the machine. Make
sure that you are familiar with the controls and properly operate the machine. You must learn how
to stop the machine quickly. If you do not follow the warnings and instructions, it may result in fire
and/or serious injury. Make sure to save all warnings and instructions for future reference.
• Read this manual and labels affixed to the machine to understand its limitations and potential
hazards.
• Be thoroughly familiar with the controls and their proper operation. Know how to stop the
machine and disengage the controls quickly.
• If the unit is to be used by someone other than original purchaser, or is to be loaned, rented, or
sold, always provide this manual and any needed safety training before operation. The user can
prevent and is responsible for accidents or injuries that may occur to themselves, to other
people, or to property.
• Do not force the machine beyond its limits. Use the correct machine for your application.
• Know how to stop the machine quickly in case of emergency. Understand the use of all
controls.
• ALL MAINTENANCE other than that listed in this manual, should be carried out by
professionally trained and certified personnel.
• When using this machine for the first time and before actual work, you MUST learn how to
handle the machine from an experienced or skilled person.
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Safety
No list of safety guidelines can be complete. Every environment is different. Always consider
safety first, as it applies to your individual working conditions. Use this and other machinery with
caution and respect. Failure to do so could result in serious injury, damage to equipment, or poor
work results.
Some or all of the following - warning signs and symbols may appear throughout this
manual. You MUST adhere to their warnings. Failure to do so may result in personal injury to
yourself or those around you.
DANGER
Indicates a hazard, which, if not avoided, could result in serious injury or death.
WARNING
Indicates a hazard, which, if not avoided, could result in serious injury.
CAUTION
Indicates a hazard which, if not avoided, might result in minor or moderate injury.
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Personal Safety
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• WARNING! Never allow children or people unfamiliar with these instructions to use the
product. Local regulations can restrict the minimum age of the operator.
• Keep children, pets, and other people not using the unit away from the work area (at least
15m). Be alert and shut off the unit if anyone enters work area. Keep children under the watchful
care of a responsible adult.
• Stay alert, watch what you are doing and use common sense when operating the machine.
Never operate the machine when unwell or tired, or if you have taken alcohol, medicine, drugs or
any substances which may slow your reflexes and compromise judgment. A moment of
inattention while operating the machine may result in serious personal injury.
• Appropriate Personal Protective Equipment (PPE), MUST be worn at all times when operating
or repairing the machine. Always wear anti-slip and resistant work footwear and long trousers
while using the machine. Do not use the machine when barefoot, wearing sandals or similar
lightweight footwear. Do not wear chains, bracelets or clothing that is loose fitting or hanging
ties or cords. Tie long hair back. Always wear protective earplugs. Loose clothes, jewellery, or
long hair can be caught in moving parts. Protect eyes, face, and head from objects that may be
thrown from the unit. Always wear safety goggles or safety glasses with side shields when
operating.
• Always keep hands and feet away from all moving parts during operation. Moving parts can cut
or crush body parts. Always keep hands and feet away from all pinch points.
• Do not touch parts that might be hot from operation. Allow parts to cool before attempting to
maintain, adjust, or service.
• Do not overreach. Keep proper footing and balance at all times. This enables better control of
the machine in unexpected situations. Extending your body too far can result in a loss of balance
and you may fall which will result in injury.
• Never place any part of your body where it would be in danger if movement should occur
during assembly, installation, and operation, maintenance, repairing or moving.
• Start the machine carefully according to instructions and with feet away from the moving parts.
• Do not place your hands or feet near or under rotating parts. Keep away from any discharge
openings.
• Keep in mind that the operator or user is responsible for accidents, hazards or unexpected
events involving the machine that occur to other people or their property. It is the responsibility of
the user to assess the potential risk of the area where work is being carried out. The operator or
user must take all necessary precautions to ensure their own safety and that of others, especially
on slopes or rough, slippery and unstable ground.

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Inspect Your Machine
• Check your machine before starting it. Keep guards in place and in working order. Make
sure all nuts, bolts, etc., are securely tightened.
• You must check the general condition of the machine before use.
• Never operate the machine when it is in need of repair or is in poor mechanical condition.
Replace damaged, missing, or failed parts before using it. Check for fuel leaks. Keep the machine
in safe working condition.
• Do not use the machine if the engine’s switch does not turn off the engine when running. Any
petrol powered machine that can’t be controlled with the engine switch is dangerous and must
be replaced.
• Regularly check to see that keys and adjusting wrenches are removed from the machine area
before starting it. A wrench or a key that is left attached to a rotating part of the machine may
result in personal injury.
• If the machine should start to vibrate abnormally, stop the engine and check immediately for the
cause. Vibration is generally a warning sign of trouble.
• Avoid accidental starting. Be sure the engine’s switch is off before transporting the machine or
performing any maintenance or service on the unit. Transporting or performing maintenance or
service on a machine with its switch on invites accidents.
• Do not tamper with or disable safety systems.
• Only use manufacturer-recommended attachments.
• Before using, always visually inspect to see that the tools are not worn out or damaged.
Replace worn out or damaged elements and bolts in set to preserve balance.
• Keep the machine in good operating condition. Operating the machine in poor or questionable
condition could result in serious injury.
• Be sure all safety devices are in working order and warning labels are in place. These items are
installed for your safety.
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Work Area
• Make sure you thoroughly inspect the entire work area and remove all objects and anything that
could be thrown by the machine or could damage the engine or machine (branches, stones, wire,
toys, etc). Attempting to clear the work area whilst using the machine will reduce your
concentration and creates a trip hazard. Any liquid spilled on the floor may result in you slipping.
• You must only work in daylight or with good artificial light in good visibility conditions. Do not
work 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 area.
• Keep people, children and animals away from the working area.
• Operate on flat, level ground.
• DO NOT work on wet ground. If there has been heavy rain on the working site, wait until the
ground has dried up.
• You must pay special attention when approaching obstacles that could compromise visibility.
• Exercise extreme caution when changing direction on slopes. When changing direction, you
need to be careful that the wheels do not hit any obstacles (such as roots, branches, stones, etc)
that can cause the machine to slide sideways or make you lose control of it. Avoid driving on
slopes steeper than 15%. Make sure on slopes you have a steady foothold.
• Find and locate all fixed objects in the ground, such as sprinkler systems, poles, water valves,
bases for washing lines etc. Make sure that you check for hidden electrical cables or similar on
the surface of the lawn. ALWAYS run the machine around these objects. NEVER intentionally run
the machine over foreign objects.
• Never park the machine in a place with unstable ground which could give way.
• You must be careful near ravines, ditches or embankments.
• Exercise extreme caution when operating on or crossing gravel drives, walks, or roads. Stay
alert for hidden hazards or traffic.
• Pay the utmost attention when working on frozen ground as the machine may tend to skid.
• Do not work in the rain, when there is a thunderstorm or lightning risk, at times of strong or gale
force winds, or at any other times when the weather conditions might make it unsafe to use this
product. If there is bad weather conditions, do not use the machine.
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During Use
• Always hold the unit with both hands when operating. Keep a firm grip on the handlebars.
Be aware that the machine may unexpectedly bounce upward or jump forward if the machine
should strike buried obstacles such as large rocks or roots.
• Do not operate the machine in confined areas where there may be a risk of crushing the
operator between the machine and another object.
• Walk, never run with the machine. Be very careful when pulling the machine toward you. You
must look behind you to make sure there are no obstacles before and during operations in
reverse gear (if applicable). Do not allow the machine to pull you along.
• WARNING! If something breaks or an accident happens whilst working, you must turn off the
engine immediately and move the machine away to prevent further damage. If an accident
happens with injuries or third parties are injured, carry out the first aid measures most suitable
for the situation immediately and contact the medical authorities for any necessary health care.
Carefully remove any debris that might cause damage or harm persons or animals should it not
be seen.
• Disengage clutch lever before starting the engine.
• Use extreme caution when reversing or pulling the machine backwards.
• Do not carry passengers.
• Never operate the machine at a fast pace.
• The excessive speed of movement or the absence of maintenance have a significant influence
on noise emissions and vibrations. It is necessary to take preventive steps to eliminate possible
damage due to high levels of noise and stress from vibration. You must maintain the machine
well, wear ear protection and take breaks from working.
• After striking a foreign object, stop the engine immediately, remove the spark plug cap and
inspect the machine thoroughly for damage. Repair the damage before continuing.
• Never attempt to make any adjustments, while the engine is running.
• Never attempt to move the machine in any way other than intended for normal use while the
engine is running.
• Factory-fitted control devices, such as the handle-mounted clutch cable, must not be removed
or exposed.
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Safety Information
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• You must disengage the blade, switch off the engine and unplug the spark plug cable (making
sure that all moving parts are stationary):
- Before refuelling.
- Before adjusting the cutting height.
- After striking a foreign object, you must inspect the machine for damage and make repairs
before using it again.
- Before checking or working on the machine.
- Before clearing blockages.
- When transporting the machine.
- Whenever you leave the machine unattended.
- When crossing surfaces other than grass.
- Before emptying the grass collector.
- Before changing the cutting height.
During Use (Continued)
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Safety Information
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Engine Safety
• This machine is equipped with an internal combustion engine. Do not use on, or near,
forest-covered or brush-covered land unless the exhaust system is equipped with a spark
arrester meeting applicable local, state, or federal laws.
• A spark arrester, if used, must be maintained in effective working order by the operator.
• Never start or run the engine inside a closed area. The exhaust fumes are dangerous,
containing carbon monoxide, an odorless and deadly gas. Operate this unit only in a
well-ventilated outdoor area. (See carbon monoxide safety).
• Do not tamper with the engine in an effort to get it to run at higher speeds. The maximum
engine speed is preset by the manufacturer and is within safety limits.
• Keep a fire extinguisher on hand when operating this machine in dry areas as a precautionary
measure.
• Never leave the operating position when the engine is running.
• The engine parts get very hot when running, do not touch. Danger of burns.
• Follow the instructions to ignite the engine carefully whilst keeping feet away from moving
parts.
• Never incline the machine during ignition. Ignite the machine on a flat surface without obstacles
or high grass.
• Do not over-rev the engine or change the engine settings.
• Never pick up or carry the machine while the engine is running.
• Stop the engine whenever you leave the machine, or before refuelling, when cleaning or while
maintaining.
• Reduce the throttle setting during engine shut down and, if the engine is provided with a
shut-off valve, turn the fuel off at the conclusion of working.
• Do not tilt the lawnmower when starting the engine.
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Carbon Monoxide
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CARBON MONOXIDE IS A COLOURLESS, ODOURLESS GAS. INHALING THIS GAS CAN
CAUSE DEATH OR SERIOUS LONG-TERM HEALTH PROBLEMS SUCH AS BRAIN DAMAGE.
Never operate the engine in a confined space where dangerous carbon monoxide fumes can
develop. All ignition operations have to be effected in an open or well-ventilated area. Always
remember that exhaust fumes are toxic.
The symptoms of carbon monoxide poisoning can include but are not limited to the following;
Headaches, dizziness, nausea, breathlessness, collapsing or loss of consciousness.
Carbon monoxide poisoning symptoms are similar to flu, food poisoning, viral infections and
simply tiredness. It is quite common for people to mistake this very dangerous poisoning for
something else.
To avoid carbon monoxide poisoning DO NOT use Petrol/Diesel powered equipment inside any
of the following; Home, garage, tent, camper van, mobile home, caravan or boat. DO NOT use
in an enclosed area or moving vehicle. This is not exhaustive and if you are in any doubt contact
your dealer.
If you think you have or someone around you has been affected by carbon monoxide poisoning;
Get them fresh air immediately, by leaving the affected area or by opening doors and windows. If
safe and practical to do so make sure that the machine is turned off. DO NOT enter a room you
suspect of having carbon monoxide present – instead call the emergency services.
Contact a Doctor immediately or go to Hospital – let them know that you suspect carbon
monoxide poisoning.
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Engine exhaust fumes contain Carbon Monoxide. This is a poisonous gas and can kill in
minutes. NEVER use inside a building or in an area with poor ventilation. NEVER use inside
a confined space, such as but not limited to a house, garage, vehicle, boat or tent. ONLY
use outside and far away from windows, doors and vents.
DANGER!

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Spilled Fuel
• If you have spilled fuel, make sure you do not attempt to ignite the engine but move the
machine away from the area of spilled fuel and avoid creating any source of ignition until the fuel
has evaporated and fuel vapours have dissipated.
• When fuel is spilled on yourself or your clothes, wash your skin and change clothes
immediately.
• ALWAYS clean up spills promptly using absorbent granules and a lidded bin.
Fuel Safety
!
CAUTION! ALL FUELS ARE HIGHLY FLAMMABLE AND PETROL VAPOUR IS
EXPLOSIVE. TAKE EXTREME CARE WHEN HANDLING FUEL. KEEP FUEL OUT OF
REACH OF CHILDREN.
General Safety
• Do not smoke each time fuel is handled.
• ALWAYS avoid inhaling fumes.
• ALWAYS carry fuel in the correct and clearly marked container.
• ALWAYS wear correct, suitable and fit for purpose Personal Protective Equipment (PPE),
suggested items are but not limited to safety gloves and overalls.
• To avoid sparking or arcing, keep grounded conductive objects – such as tools – away from
exposed, live electrical parts and connections. These events could ignite fumes or vapors.
• Do not operate the machine with known leaks in the fuel system.
• Fire hazard - keep fuel away from all sources of ignition for example heaters, lamps, sparks
from grinding or welding.
• DO NOT carry out hot work on tanks that have contained fuel.
• ALWAYS keep the work area tidy.
• ALWAYS dispose of waste fuels correctly.
• Serious personal injury can occur when petrol is spilled on yourself or your clothes. Rinse your
skin and change your clothes immediately.
General Safety

Safety Information
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• ALWAYS fuel and de-fuel in a well ventilated area outside of buildings. Use a funnel to add fuel,
only outdoors. Do not smoke during this and each time fuel is handled.
• Add fuel before igniting the engine, never remove the fuel tank cap or add fuel whilst the engine
is running or when it is hot.
• When de-fueling ALWAYS use a proper fuel retriever.
• Never overfill the fuel tank. Engine heat can cause fuel to expand, never fill the tank to more
than 1/2” below the bottom of the filler neck. This will provide space for fuel expansion.
• When refilling or draining the fuel tank, use an approved fuel storage container while in a clean,
well-ventilated outdoor area. While adding fuel or operating the unit, do not smoke, and stay
away from sparks, open flames, or other sources of ignition near the area of operation.
• Always stop the engine and allow it to cool before filling the fuel tank. Never remove the cap of
the fuel tank or add fuel while the engine is running or when the engine is hot.
• Loosen the fuel tank cap slowly to relieve any pressure in the tank.
• ALWAYS keep the handles dry, clean and free of oil and fuel.
• After fueling, ensure to tighten the cap securely.
• Never use the lock-function when filling with fuel.
Fueling / De-Fueling
• Store fuel in containers specifically designed and approved for fuel storage.
• Store fuel in a cool, well-ventilated area, safely away from sparks, open flames, or other
sources of ignition.
• Never store fuel – or a machine with fuel in the tank – inside a building where fumes may reach
a spark, open flame, or any other source of ignition (such as a water heater, furnace, or clothes
dryer). Allow the engine to cool before storing in any enclosure.
• Replace all fuel tank and container caps securely and wipe up spilled fuel. Never operate the
unit without the fuel cap securely in place.
Storage

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Batteries (Where Present)
Batteries present a risk if they become damaged by the possible leaking of electrolyte. This
electrolyte is an acid and can cause serious burn injuries. Care should be taken when working on
or near them. NOTE the electrolyte may be in a liquid or gel form.
Should you come in to contact with electrolyte you should;
• Remove all clothing contaminated with
electrolyte. If you cannot remove then saturate them in water.
• Get medical assistance as soon as possible.
You must advise the medical staff of the type of acid.
• Lead/acid battery = dilute sulphuric acid.
• Nickel/cadmium = potassium hydroxide alkali electrolyte.
• Use fresh running water to wash off excess electrolyte, continue this until medical assistance
arrives. Make sure that you do not wash the electrolyte to another part of your body or face.
• If electrolyte comes in to contact with Eyes the electrolyte needs to be immediately washed
away with large amounts of water. Make sure that you do not wash the electrolyte to another part
of your face or body.
• Gasses from charging batteries are highly flammable and great care should be taken to charge
in well ventilated areas.
!
• There is an explosion risk if the battery terminals are short circuited, when
connecting/disconnecting ALWAYS exercise great care so that the terminals or battery
leads are NOT allowed to touch and cause a spark. ALWAYS use suitable insulated tools.

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Electrical Safety (Where Applicable)
!
ELECTRICITY CAN KILL - NEVER WORK ON LIVE/ENERGISED EQUIPMENT.
DANGER!
• Prior to carrying out any maintenance work you MUST identify electrical isolation methods and
isolate all electrical supplies.
• Prior to use and with all electrical supplies isolated, you MUST check all electrical cables, plugs
and connectors for the following;
- Are intact and have no signs of damage, to include but not limited to bare wires, chaffing, cuts
and loose wiring.
- If there are any signs of damage, the damaged item MUST be taken out of service until the
damage has been repaired by an electrically competent person.
- All trailing cables should be routed so as not to cause any kind of trip hazard.
- NEVER work on or near electricity with wet hands, wet clothing and wet gloves.

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• Prolonged use of hand held (operated) machines will cause the user to feel the effects of/from
vibrations. These vibrations can lead to white finger (Raynaud’s phenomenon) or carpal tunnel
syndrome. This condition reduces the ability of the hand to feel and regulate temperature,
causing numbness and heat sensations and may cause nerve damage and circulatory tissue
death.
• Not all factors that lead to white finger disease are known, but cold weather, smoking and other
diseases that affect blood vessels and blood circulation as well as large and long-lasting impact
of shocks are considered factors in the formation of white finger. Note the following to reduce the
risk of white finger and carpal tunnel syndrome;
• Wear gloves and keep your hands warm.
• Take regular breaks.
• All of the above precautions may help reduce the risk of white finger disease but not rule out
the carpal tunnel syndrome. Long-term and regular users are therefore recommended to observe
the condition of your hands and fingers. Seek medical attention immediately if any of the above
symptoms should occur.
Vibrations (Where Applicable)
!
• The operating noise of the machine can damage your hearing. When wearing protection such
as earplugs or ear defenders to protect your hearing. Long-term and regular users are advised to
have hearing checked regularly. Be especially vigilant and cautious when wearing ear protection
because your ability to hear alarm warnings will be reduced.
• Noise emissions for this equipment is unavoidable. Carry out noisy work at approved times and
for certain periods. Limit the working time to a minimum. For your personal protection and
protection of people working nearby it is also advisable for them to wear hearing protection.
• See Certificate of Conformity section for Outdoor Noise declaration of conformity.
Noise (Where Applicable)
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Personal Protective Equipment
!
HAND PROTECTION MUST BE WORN
Protective electrically non-conductive gloves are highly recommended when working.
HEARING PROTECTION MUST BE WORN
Suitable safety hearing protection is recommended.
EYE PROTECTION MUST BE WORN
Always wear safety glasses/goggles and/or face shields. Everyday eyeglasses have
only impact resistant lenses; they are not safety glasses/goggles.
FOOT PROTECTION MUST BE WORN
Non-skid heavy duty footwear are highly recommended when working.
PROTECTIVE CLOTHING MUST BE WORN
Do not wear loose clothing, gloves, scarfs, neckties or jewellery
(rings, wrist watches), which can be caught in moving parts.
HEAD PROTECTION MUST BE WORN
Wear a safety helmet with a safety visor.
FACE SHIELD MUST BE WORN
Wear a face shield to protect your face.
RESPIRATOR MUST BE WORN
Wear a respirator.
Appropriate Personal Protective Equipment (PPE), MUST be worn at all times when
operating or repairing the machine. No protective equipment can ensure 100%
protection.
When selecting PPE, make sure it’s CE marked and it suits the user in terms of size, fit, etc. If
more than one item of PPE is worn at the same time, make sure they can be used together, e.g.
wearing safety glasses may disturb the seal of a respirator, causing air leaks.

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The HYM400P is a petrol powered lawnmower from HYUNDAI, ideally suited for small sized
lawns. The HYM400P has a cutting width of 400mm and is powered by a 79cc 4-stroke OHV
petrol engine.
The lawnmower is a garden tool and precisely a pedestrian controlled lawnmower. The machine
is essentially composed of an engine which drives a blade enclosed in a casing, equipped with
wheels and a handle. The operator is able to operate the machine and use the main controls,
always staying behind the handle at a safe distance from the rotating blade. If the operator leaves
the machine, the engine and cutting means will stop within a few seconds.
The lawnmower is manufactured according to the latest safety requirements. These include a
blade brake that stops the engine and blade when you let go of the OPC lever. Every precaution
is only effective when it is followed exactly.
Intended Use
This machine was designed and manufactured for cutting and collecting grass in gardens and
grassy areas, in areas in proportion to its cutting capacity, controlled by a pedestrian operator.
The presence of attachments or specific devices can prevent cut grass from being collected or
produce a mulching effect, depositing cut grass on the ground.
User Types
This machine is intended for use by consumers, i.e. non professional operators. The machine is
intended for “DIY” and domestic use only.
Improper Use
Any other usage not in keeping with the above mentioned ones may be hazardous and harm
persons and/or damage things. Examples of improper use may include, but are not limited to:
- transporting people, children or animals on the lawnmower
- letting yourself be transported by the lawnmower
- using the machine to tow or push loads
- using the machine for leaf or debris collection
- using the machine to trim hedges, or cutting anything other than grass
- use of the machine by more than one person
- using the blade on surfaces other than grass
Intended Use

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Safety Information
Symbols On The Machine
We have provided safety messages in this manual and on the machine. This information alerts
you to potential hazards that could hurt you or others. Please read these messages carefully.
However, we may not have listed all of the possible hazards, you must also use your own
judgment.
IMPORTANT
Please read the instruction
manual carefully, especially the
safety warnings marked with this
symbol.
INSTRUCTION MANUAL
Read and understand operator’s
manual before using the machine.
Failure to follow instructions could
result in death or serious injury.
SAFETY DISTANCE
Do not put hands or feet near or
under rotating parts. Keep a 15
metre safety distance.
BYSTANDERS
Never allow any bystanders in
front of the unit. Keep a 15 metre
safety distance.
ROTATING PARTS
The rotating parts are capable of
amputating fingers, toes and feet.
Failure to observe could result in
serious injury or death.
UNATTENDED UNIT
Always disengage the levers, turn
off the engine, and remove the
spark plug, when the unit is left
unattended.
CE SYMBOL
This product complies with the
applicable European directives
and an evaluation method of
conformity for these directives
was done.
DANGER!
Keep hands and feet away from
cutting parts.
WARNING
Do not touch the rotating parts.
WARNING!
Always use correct tools and
original spare parts.
WARNING!
Stop the engine before cleaning
the work area.
KEEP BYSTANDERS AWAY!
Keep bystanders, especially
children and pets away!
DO NOT USE ON SLOPES
Do not use on slopes above
15°.
PROTECT FROM MOISTURE
Do not expose the product to
rain or wet conditions.

Features
HYM400P Features
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1
2
3
4
5
6
78
9
10
11

Features
1
Main Handle
Hold onto with both hands this whilst using the machine.
2
Operator Presence Control (OPC) Lever
This is a safety feature. The machine will stop if you let go of this lever.
3
4
5
6
Air Filter
Prevents dust, dirt and other contaminants from getting into the engine.
7
Spark Plug
8
Exhaust
This will get very hot. Do not touch.
9
HYM400P Features
10
Grass Collector
This collects the grass whilst you mow.
Oil Filler
Fill oil here.
11
Cutting Height Adjustment Lever
You can choose different cutting heights.
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Recoil Starter Cord
Wheel
Primer Bulb

Unboxing
• User Manual
• Quick Start Guide
• 40L Grass Collector
• Tool Kit
• HYM400P Lawnmower
Box Contents
WARNING! Unboxing and assembling the machine should be done on a flat, stable surface
with enough room. Disposal of the packaging should be done in accordance with the local
regulations in force.
WARNING! Some of the packaging material may be harmful to children. Keep out of reach of
children.
Unboxing Safety
!
Carefully remove the product from the packaging and examine it for any sign of damage caused
during shipping. Lay the contents out and check them. If any part is damaged or missing, you
must not use the machine. Contact HYUNDAI Power Products immediately. You must keep the
packaging material in case the machine needs to be returned or repaired.
Ensure that you have all the accessories and tools you need for assembly and operation
including the suitable personal protective equipment.
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Assembly
CAUTION - This guide is meant to serve as a quick reference for operating your HYUNDAI
machine. We always advise reading the manual in full before operation.
CAUTION - For OUTDOOR use ONLY. Petrol machines produce carbon monoxide –
poisonous, colourless and odourless gas that can cause serious injury or death. Petrol is highly
flammable, always handle with extreme care and in a well ventilated area.
NOTE - Images may vary depending on model.
NOTE - The machine may be supplied with some parts already assembled. Prior to assembly,
check all items have been received. The mulching plug may already be installed for transport.
NOTE - This machine is shipped without fuel and oil and MUST be filled before use. Failure to
do so may cause damage to the engine that will not be covered by warranty.
Assembly Safety
!
We recommend that you fill out the information on page 58. If you need to contact an
authorised dealer or customer service for information on servicing, you may need to
provide this information.
There is also a service record so you can keep track of your machine service dates.
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Assembly
Step 1 : Assemble Handle Bars
Unboxing & Assembly Video:
YOU MUST read and understand the instruction manual first.
Go to youtube.com and type in Hyundai HYM400P assembly.
2
Attach the upper handle to the lower handle and tighten the quick release handle bolts
securely. See image 3 & 4.
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Attach the lower handle to the deck of the mower using the supplied screws. See image 1 & 2.
1
Image 1
Image 3 Image 4
Image 2

Assembly
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3
Slowly pull the recoil start handle up to the cord loop on the handlebar. See image 5.
Image 5

Assembly
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Step 2 : Cable Attachment
NOTE - If stood behind the lawnmower:
OPC Cable : Attaches to the lever in front of the main handlebar if traced, will attach to the engine.
Follow the cable you want to
attach and determine which
lever it will attach to.
Gently prise the lever inwards
from its locating hole in the
main handlebar.
Insert the end of the cable in to
the location hole on the lever.
Position the cable until it lies
flat in the lever.
Refit the lever back into its
location hole on the main
handlebar.
Check the cable lies flat and
has not snagged on any other
part of the lawnmower.
1 2 3
4 5 6

Assembly
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Step 3 : Grass Collector Assembly
Slot the metal pole into the plastic parts around the grass collector.
1
Step 4 : Cable Clips
1
Use the plastic cable clips to attach the cables to the handlebars.

Preparation
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Oil Type : SAE 30 or 15w40 Engine Oil
Oil Capacity : 400ml
Adding Oil
NOTE - The machine is delivered without oil in the engine. All machines are tested and inspected
so there may be some residual oil left in the machine so please fill with caution.
Remove the oil filler cap.
1
Fill with fresh SAE 30 or 15W40 engine oil to the upper mark on the
dipstick. Stop occasionally to check the level. DO NOT overfill.
2
Once the correct amount of oil has been added, refit the dipstick securely.
3
Checking Oil Level
Remove the oil filler cap and wipe the dipstick clean.
1
Remove the dipstick and check the oil level. It should be up to the upper mark on the dipstick.
2
If the oil level is too low, add SAE 30 or 15W40 engine oil to the upper mark on the dipstick. DO
NOT overfill. The oil level should not be above the upper mark on the dipstick. If you do overfill,
read the ‘Changing / Draining Oil’ section below for more information on draining oil.
3
Once the correct amount of oil has been added, refit the dipstick securely.
4

Preparation
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Fuel Type : Fresh Straight Unleaded Petrol
Fuel Capacity : 1L
Adding Fuel
NOTE - The machine is delivered without petrol. All machines are tested and inspected so there
may be some residual petrol left in the machine so please fill with caution.
Remove the fuel tank cap.
1
Fill the fuel tank with fresh straight unleaded petrol. Allow a 25mm gap from the top of the tank,
then refit the cap securely. DO NOT mix petrol with oil and clean up any spills immediately.
NOTE - DO NOT overfill. The fuel tank only needs to contain enough fuel to complete the days
work. If you run out of fuel, refilling must only be done once the engine has cooled down. Fuel
stored within the machine for 28 days or more can go stale and should be drained before further
use.
NOTE - Make sure not to drip petrol onto the plastic parts to prevent damaging them and remove
all traces of spilt petrol immediately. The warranty will not cover damage to plastic parts caused
by petrol.
2
Refit the fuel filler cap securely and clean up any fuel spilt before starting the engine.
3
Make sure you read the fuel safety before handling fuel.

Operation
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Cutting Height Adjustment
Pull the adjustment lever outwards and select the required height.
2
3
The height is automatically adjusted for all wheels.
This is the lowest height setting.
This is the highest height setting.
Make sure the engine is off.
1

Operation
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General Mowing Tips
Maintain a constant cutting height of 3-5cm. Do not shorten the grass to less than half its
original height.
1
2
Under certain conditions, such as very tall grass, it may be necessary to raise the height of
cut to reduce pushing effort, prevent overloading of the motor and leaving clumps of grass
clippings.
3
It may also be necessary to reduce ground speed and/or push the lawnmower over the area
a second time. For extremely heavy cutting, reduce the width of cut by overlapping the pre-
viously cut path and mow slowly.
Recommended Mowing Schedule
Spring (March, April & May)
Mow once a week on a high to medium height setting.
Summer (June, July & August)
Mow twice a week under good growing conditions on a low setting. In dry conditions, mow once
a week on a medium to high height setting.
Autumn (September, October & November)
Mow once a week on a medium height setting.
Winter (December, January & February)
Mow as required on a high height setting.

Starting Procedure
YOU MUST read and understand the full safety instruction manual before starting the
machine.
CAUTION - For OUTDOOR use ONLY. Petrol machines produce carbon monoxide –
poisonous, colourless and odourless gas that can cause serious injury or death. Petrol is highly
flammable, always handle with extreme care and in a well ventilated area.
NOTE - This machine is shipped without fuel and oil and MUST be filled before use. Failure to
do so may cause damage to the engine that will not be covered by warranty.
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Before Each Use
Always ensure that the machine is in a safe working condition. Inspect and check safety
devices and guards and check all nuts, bolts and screws are secure.
1
Check the oil level and fill the fuel tank.
2
Make sure you know how to stop the machine and ensure you are familiar with emergency
stop.
3
Start the machine following the instructions and stay clear of the machine’s moving parts.
4
YOU MUST read and understand the full safety instruction manual before starting the
machine.
!
Check the OPC cable, if there is more than 10mm movement in the OPC lever before the
cable begins to move, then the OPC cable will require adjustment.
5

Starting Procedure
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Starting
Make sure the blade is free of long grass and the cutting height is set to the highest setting.
1
3
4
Pull the Operator Presence Control (OPC) lever back towards the main handlebar.
See image 2.
Gently pull the recoil start handle until you feel resistance, then pull swiftly until the
lawnmower starts.
2
From cold, pump the primer bulb 5 times. You do not need to do this for warm start. (Warm
start is when the machine has been turned off for less than 15-20 minutes). See image 1.
Image 1

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Stopping
Release the Operator Presence Control (OPC) lever and the engine will stop.
2
Stopping Procedure
CAUTION - The engine and exhaust will remain hot for a while after use. Ensure the engine
and exhaust has cooled before carrying out any maintenance, refuelling or storage.
Before stopping the machine, you must allow the engine to idle for 30 seconds.
You do not need to do this if you need to emergency stop the engine.
1

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Maintenance
Maintenance Safety
!
IMPORTANT - Routine and accurate maintenance is essential for maintaining original
machine safety and performance levels.
WARNING - Before cleaning or doing maintenance work, you need to stop the engine,
disconnect the spark plug cable and read the relevant instructions. You need to wear proper
clothing and protective gloves whenever your hands are at risk.
If there are worn or damaged parts, never use the machine. Faulty or worn-out parts must be
replaced and not repaired. You must only use original spare parts. The use of non-original and/or
incorrectly fitted parts will jeopardize the safety of the machine. This may also cause accidents or
personal injuries for which the manufacturer is under no circumstance liable or responsible.
Any maintenance operations or adjustments not explained in this manual must be carried out
by your Dealer or a specialised Service Centre with the necessary knowledge and equipment to
ensure that the work is done correctly maintaining the machine’s original safety level. Any
operations performed in unauthorised centres or by unqualified persons will invalidate the
Warranty and all obligations and responsibilities of the Manufacturer.
Be very careful during adjustment of the machine to prevent entrapment of the fingers
between moving parts and fixed parts of the machine.
!
!
!
!
!
Checking Your Machine
When checking your machine, we recommend you:
• Check for worn or damaged parts.
• Make sure all nuts, screws and bolts are tight.
• Make sure all warning stickers are in place and not damaged.
• Check for oil / fuel leaks.
• Check the oil and fuel levels regularly.
• Frequently check the lawnmower and ensure that all grass deposits are removed from beneath
the deck.
• Check the blade for damage.

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Maintenance
CAUTION - DO NOT use a hose pipe or pressure washer to clean the engine. Water can
damage the engine or contaminate the fuel system.
NOTE Engine must be switched off and spark plug lead disconnected.
!
!
After Each Use
• You must remove grass and mud from the machine to prevent it from drying. This will cause
problems the next time the machine is used.
• Wipe the machine down with a damp cloth.
• For larger build ups of debris, use a scraper or similar product.
• Dry the machine completely to prevent rust from forming.
• Make sure not to drip petrol onto the plastic parts to prevent damaging them and remove all
traces of spilt petrol immediately. The warranty will not cover damage to plastic parts caused by
petrol.
Regularly
• Paint on internal chassis parts may start to flake over time due to abrasive action of cut grass.
If this happens, you should touch-up with rust-proof paint to prevent rusting that could corrode
the metal. You can use a light spray oil such as WD40 on exposed parts and cutting deck to help
prevent rust.
• Avoid using solvents when cleaning plastic parts. Most plastics are susceptible to damage from
various types of commercial solvents and may be damaged by their use.
Cleaning

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Whenever the machine is to be handled, lifted, transported or tilted, you must:
Transportation
Wear sturdy work gloves.
1
Hold the machine at the points that offer a safe grip, taking into account the weight and
relative distribution of the same.
2
Use an appropriate number of people for the weight of the machine and the characteristics of
the vehicle or the place where it must be placed or collected.
3
You must make sure that machine movements to not cause petrol leaks, damage or injuries.
4
During transport, make sure to fasten the machine securely with cables or straps.
5
The machine must be transported on a flat surface.
6
Maintenance

Maintenance
Short Term Storage
After use, please follow the below steps before storing your machine.
Storage
Allow the engine to fully cool down.
1
Clean the machine. See the ‘Cleaning’ section.
2
Store the machine following the guidelines above.
3
Where To Store
!
Store in a cool, dry place away from sources of ignition and varying changes in temperature.
Store on a flat and level surface with all wheels on the ground.
DO NOT stack other items on top of the machine when in storage.
Store the machine in a safe place, out of the reach of children or anyone who is not familiar
with operation.
To reduce fire hazards, keep the engine, silencer, and petrol storage area free of grass,
leaves, or excessive grease. Do not leave containers full of cut grass inside storage areas.
DO NOT store the machine with fuel in the tank in an area where the fuel vapours could reach
an open flame, a strong heat source or a spark.
DO NOT store a machine that has not been given time to fully cool down. Engine must be
cooled down fully before storage.
!
!
!
!
!
!
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Maintenance
Long Term Storage
If storing the machine for a period of 30 days or more, you must follow proper storage and
winterisation guidelines to avoid any possible issues with the machine. Incorrect storage can lead
to possible fueling or engine issues that will not be covered by the warranty.
Allow the engine to fully cool down.
1
Drain all the fuel from the fuel tank and then run the machine until it has completely run out of
fuel to clear the remaining fuel from the fuel lines and carburettor.
2
Drain the oil from the engine.
3
Follow the cleaning instructions in the ‘Cleaning’ section.
4
Follow the maintenance section and check, service or replace serviceable items if required.
Visually inspect the machine and replace or repair any worn parts. Check the blade and sharpen
or replace if necessary.
5
Lubricate all moving parts with light spray oil such as WD40.
6
Refill engine oil with new SAE 30 or 15w40 engine oil, fill to the upper mark on the dipstick.
7
Remove the spark plug and pour 1 teaspoon of fresh engine oil down the cylinder bore. Cover
the spark plug hole with a lint free clean cloth, ensuring no dirt or debris falls into the cylinder
chamber and gently pull the recoil starter handle to coat the cylinder bore with the fresh oil.
Refit the spark plug.
8
Preparation To Re-Use
Check oil level before using.
1
Check spark plug is inserted correctly.
2
Fill engine with fresh unleaded petrol that has not been stored for periods of more than 30 days.
3
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Maintenance
The Blade
You MUST wear gloves to protect your hands from being cut when working with the blade.
1
The blade is made of pressed steel, in order to obtain a good cut, sharpen the blade frequently,
typically around every 25 hours of work.
2
Following blade sharpening, you must make sure that the blade is always well balanced.
3
To remove the blade, unscrew the centre bolt, check the blade carrier and all components.
Replace if they are worn or damaged.
4
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WARNING
• Never touch a rotating blade.
• Check the blade in order to get a good cut. The blade should always be sharp and well
balanced. At regular intervals, check the tightness of all nuts, bolts and screws.
• If the blade hits an obstacle, check for damage and if the machine vibrates badly, stop the
lawnmower and take it to a service dealer.
!
It is best if all interventions on the blade are done at a specialised centre that has the special
tools and equipment.
5
Only original blades must be used on this machine. Given product evolution, the blades may
be replaced in time with others having similar interchangeable and operating safety features.
6

Maintenance
Air Filter
To gain access to the air filter, press the 2 latch tabs on the front of the air filter cover.
1
Remove filter, check for contamination and clean or replace as required.
2
Clean the filter by washing the foam filter in warm soapy water and allow to dry.
3
Wipe dirt from the air cleaner body by using a moist rag, be careful to prevent dirt or debris
entering in to the carburettor.
4
Reinstall the filter and cover.
5
CAUTION - A dirty air filter will restrict the air flow to the carburettor, which will reduce engine
efficiency.
When using the machine in very dusty areas you must clean or replace the air filter more often.
Never operate the machine without the air filter being fitted it can cause damage to the engine
which is not covered by warranty.
!
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Maintenance
Spark Plug
For good performance, the spark plug must be properly gapped and free of deposits.
You MUST allow the engine to cool down before carrying out any maintenance.
1
Always use the correct spark plug.
2
To check the spark plug, remove the spark plug HT lead cap and remove the
spark plug with the spark plug wrench.
3
Remove spark plug using the supplied spark plug wrench.
4
Clean the spark plug electrode with a soft wire brush, making sure there is no damage to the
insulator or electrode.
5
The spark plug gap should be 0.70mm to 0.80mm. Check the gap by using a feeler gauge.
Adjust as necessary by carefully bending the side electrode to achieve the correct gap.
6
Refit the cleaned and adjusted spark plug by hand to avoid cross-threading.
7
After spark plug seats then tighten as necessary with a spark plug wrench but avoid
over-tightening.
8
Re-attach the spark plug cap.
9
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0.028” to 0.031”
0.70mm to 0.80mm

Maintenance
Changing / Draining Oil
To reduce fire hazards, check there is no oil and/or fuel leaks on a regular basis.
There are different ways you can empty the oil:
• The oil can be discharged at a specialised servicing centre.
• You can use an oil syringe to suction the oil out through the filler spout, bearing in mind you
may need to repeat the operation several times in order to completely empty the tank.
• Gently tilt the machine with the air filter facing upwards and allow the excess oil to drain from
the dipstick port, in to a suitable container.
Remember to top-up with oil before using the machine again.
Fuel & Carburetor
The use of old or stale petrol will impair the starting and running of the machine.
Make sure that the machine has fresh unleaded petrol and always remove the fuel before
storing for long periods of time.
1
To drain the carburetor float bowl, undo the drain bolt making sure that the washer is
not lost. If stored for more than 2 weeks and engine will not start, drain the old fuel from the
carburetor float bowl to allow fresh fuel to fill the carburetor.
2
Use a suitable container to catch the fuel. Take care not to spill fuel and make sure that
all spilt fuel is cleared away safely. Float bowl contains approx 30ml of fuel. It is possible to
empty the entire fuel system by this method, as the fuel tank feeds the carburettor.
3
CAUTION - ALL FUELS ARE FLAMMABLE. Always fuel and defuel in a well-ventilated area
outside of buildings. Always wear correct PPE and wipe up and spills immediately.
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It is highly recommended to change the engine oil every 100 hours or 12 months. This will
ensure the machine will function properly over time.

Maintenance
OPC Cable Adjustment
NOTE - If there is more than 10mm movement in the OPC lever before the cable begins to
move, then the OPC cable will require adjustment. It is necessary as part of routine
maintenance to adjust the OPC cable tension to ensure the lawnmower will start correctly.
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Follow the OPC cable to the adjuster located on the side of the engine.
Undo the lock nut and wind it forwards.
Move the adjustment nut towards the lock nut and continually check the cable tension at the
lever.
Once the movement has been removed, hold the adjustment nut in place and tighten the lock
nut back towards the adjustment lever to lock the cable in place. Check the cable adjustment
has worked by starting the mower. If the mower still fails to start, re-adjust until the lawn
mower starts. Also check that when the OPC lever is released, that the blade stops promptly.
1
2
3
4
1 2
3 4
Adjustment Nut
Lock Nut

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Troubleshooting
1
2
3
4
5
6
7
Adjust OPC cable.
Fill fuel tank.
Drain carburetor float bowl.
Clean or replace air filter.
Tighten spark plug.
Correctly fit the spark plug cap.
Wait several minutes before starting.
1
2
3
4
5
6
7
OPC cable not adjusted correctly.
Fuel tank is empty.
Stale petrol.
Air filter element is dirty.
Spark plug is loose.
Spark plug cap loose or disconnected.
Engine flooded.
1
2
3
Dirt, water or stale fuel in tank.
Vent hole in fuel tank is clogged.
Air filter element is dirty.
1
2
3
Drain fuel and clean tank. Fill with
clean, fresh fuel.
Clean or replace fuel tank cap.
Clean or replace air filter element.
1
2
3
Spark plug is defective.
Spark plug gap is incorrect.
Air filter element is dirty.
Engine does
not start
1
2
3
Set plug gap to 0.7 - 0.8mm or
replace spark plug.
Remove the air filter and pull starter
rope until carburetor clears.
Contact the service dealer.
1
2
3
Spark plug cap is incorrect.
Carburetor is flooded with fuel.
Faulty ignition module.
Engine
difficult to
start or
loses power
1
2
3
Fit new, correctly gapped spark plug.
Set plug gap to 0.7 - 0.8mm.
Clean or replace air filter element.
Engine idles
poorly
1
2
3
Air filter element is dirty.
Air slots in engine are blocked.
Cooling fins and air passages under
engine housing are blocked.
1
2
3
Clean or replace air filter element.
Remove debris from slots.
Remove debris from cooling fins and
passages.
Engine
skips at
high speed
1
Spark plug electrode gap is incorrect.
1
Set plug gap to 0.7 - 0.8mm.
Engine
overheating
1
2
Cooling airflow is restricted.
Incorrect spark plug.
1
2
Remove any debris from slots in
shroud, blower housing and air
passages.
Fit new spark plug.
Mower
vibrates
abnormally*
*DO NOT use the machine until vibration issue has been fixed.
1
2
Cutting assembly is loose.
Blade / cutting assembly is
unbalanced.
1
2
Tighten blade.
Take to a service dealer.
Where necessary, all corrective actions should be carried out by a suitably qualified person.
Problem
Possible Cause
Possible Solution
Spark plug
faulty
Engine
operates
erratically

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Technical Data
Specifications
Model HYM400P
Engine Type HYUNDAI IC80V, 4-Stroke OHV Single
Cylinder
Engine Size 79cc
Rated Power 1.6kW
Max. Engine Speed 3000rpm
Fuel Tank Capacity & Fuel Type 1L Straight Unleaded Petrol
Oil Capacity & Oil Type 400ml SAE30 or 15W40
Start Method Recoil Start
Height Adjustment 6 Positions
Cutting Height 25-75mm
Cutting Width 40cm / 400mm
Grass Collector Capacity 40L
Drive Push
Functions Cut & Collect
Handle Type Soft Grip, Foldable
Measured Sound Level 94dB(A)
Guaranteed Sound Level 96dB(A)
Vibration Value 6.94m/s2 K=1.5 m/s²
Net Weight 20.2kg

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Spare Parts
Ordering Spare Parts
Only use original spare parts: The use of non-original and/or incorrectly fitted parts will
jeopardise the safety of the machine, may cause accidents or injuries for which the manufacturer
is under no circumstance liable or responsible.
1
2
Find the part you are looking for in the drawings.
Information about the parts can be found in the tables below or visit power-spares.co.uk
3
Use this information to order the part.
4
Contact us if you need help finding the correct part.
Drawing A

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Spare Parts
Drawing Number Spare Part Name Part Number
HYM400P-A1 Clutch Lever 1135001
HYM400P-A2 Foam Pipe 1288003
HYM400P-A3 Upper Handle 1142005
HYM400P-A4 Bolt 1290006
HYM400P-A5 Flat Washer 1290007
HYM400P-A6 Knob 1290008
HYM400P-A7 Rope Guide 1135007
HYM400P-A8 Handle Plug 1288008
HYM400P-A9 Lower handle, left 1135009
HYM400P-A10 Lower handle, right 1135010
HYM400P-A11 Cable Support 1290009
HYM400P-A12 ST screw 1290044
HYM400P-A13 Nut 1290033
HYM400P-A14 Brake Cable 1135014
HYM400P-A15 Bolt 1290036
Drawing Number Spare Part Name Part Number
HYM400P-B1 Y80V engine 1135016
HYM400P-B2 Bolt 1001057
HYM400P-B3 Flat key 1149047
HYM400P-B4 Blade adapter 1135019
HYM400P-B5 16” Blade 1135020
HYM400P-B6 Blade Washer 1149055
HYM400P-B7 Blade Bolt 1149056
HYM400P-B8 Engine cover 1135023
HYM400P-B9 Washer 1308024
HYM400P-B10 Nut 1001002
HYM400P-B11 Filtering Net Duct of Fuel 1149059
HYM400P-B12 Oil Pipe Circlip I 1149060
Drawing A
Drawing B

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Spare Parts
Drawing Number Spare Part Name Part Number
HYM400P-C1 ST screw 1290072
HYM400P-C2 Belt protection cover 1135029
HYM400P-C3 Front plastic cover 1135030
HYM400P-C4 G40 deck 1135031
HYM400P-C5 ST screw 1135032
HYM400P-C6 Rear Cover 1135033
HYM400P-C7 Rear Cover Spring 1135034
HYM400P-C8 Rear Cover Shaft 1135035
HYM400P-C9 Plug for Cable hole 1135036
Drawing Number Spare Part Name Part Number
HYM400P-D1 Height adjusting handle 1288062
HYM400P-D2 Rear drive assembly 1135038
HYM400P-D3 Washer 1290093
HYM400P-D4 7” Wheel 1135040
HYM400P-D5 Nut 1290094
HYM400P-D6 7” Wheel cover 1135042
HYM400P-D7 Height adjusting board 1135043
HYM400P-D8 ST screw 1290031
HYM400P-D9 Rear drive shaft 1135045
HYM400P-D10 Rear drive fixing board 1135046
HYM400P-D11 ST screw 1135047
HYM400P-D12 Front drive assembly 1135048
HYM400P-D13 6” Wheel 1135049
HYM400P-D14 6” Wheel cover 1135050
HYM400P-D15
Height Adjuster Connecting Rod
1135051
HYM400P-D16 Pin 1290096
Drawing Number Spare Part Name Part Number
HYM400P-E1 Grass bag Metal Bracket 1135053
HYM400P-E2 Fabric Bag 1135054
Drawing C
Drawing D
Drawing E

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01646 687 880 [email protected].uk
Recycling And Disposal
We do not offer a takeback scheme for the recovery of Waste Electrical Electronic
Equipment (WEEE) & Batteries. Instead the responsibility to dispose of WEEE and/or
Batteries is passed onto you by us.
So when it becomes necessary to dispose of your machine you must take it to your
local Civic Amenity Site. For further information please contact your local Authority
for disposal advice.
You MUST make sure that all unused oil and fuel is disposed of correctly either beforehand
or at your local Civic Amenity Site.
• Under NO circumstances must any fuel or oil be put down any drains.
• Certain products contain WEEE waste which should not be disposed of in your domestic waste.
• You MUST recycle WEEE in accordance with your local authority or recycling centre.
• Certain products contain batteries which should not be disposed of in your domestic waste.
• You MUST recycle batteries in accordance with your local authority or recycling centre.
• Unwanted packaging and materials should be stored and taken to a recycling centre so it can
be disposed of in a manner which is compatible with the environment.
We are a Member of the VALPAK National Compliance Scheme and our registration number is
RM08660. For further information about disposal please contact your Local Authority.
You can also get more advice and guidance about recycling at the following website
http://www.recycle-more.co.uk
Should you pass this product on to another user either sold or loaned, you MUST pass on this
user manual. This will make sure that all other users can use and maintain this machine safely.
1. Environmental protection should be a priority of considerable importance when using the
machine, for the benefit of both social coexistence and the environment in which we live. Try not
to cause any disturbance to the surrounding area.
2. You must comply with local regulations and provisions for the disposal of packaging, oils,
petrol, filters, damaged parts or any elements which have a strong impact on the environment.
This waste must not be disposed of as normal waste. It needs to be separated and taken to
specified waste disposal centres where the material will be recycled.
3. You must comply with local regulations for the disposal of waste materials after mowing.
4. When disposing, do not pollute the environment with the machine, but hand it over to a
disposal centre, in accordance with the local laws in force.
Recycling And Disposal
Environmental Protection

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Useful Information
Check Out Our YouTube Channel
Our videos on YouTube include:
• Unboxing
• Assembly of your machine
• How to service your machine
• Products in use
• ‘How To’ videos
• Product features
Go to www.hyundaisupport.co.uk or search ‘Hyundai Power Products’ in YouTube.
Warranty
Proof of purchase will be required before you make a warranty claim.
Full warranty terms and conditions can be found on the HYUNDAI POWER PRODUCTS website:
www.hyundaipowerproducts.co.uk
Manual Updates
Our manuals are constantly being reviewed and updated. Should you find an error, omission or
something unclear, please contact us for assistance.
We reserve the right to make any modifications without prior notice whenever necessary.
Our latest manuals are also placed online.
All our manuals can be downloaded at: www.hyundaipowerproducts.co.uk
Returning Your Product
If you are returning your product, please contact the dealer for their returns policy.
Leaving A Review
We work very hard to give all of our customers the best possible service. If you have any
problems, before leaving negative feedback, please contact us to give us a chance to resolve the
issue. We would be delighted if you left us positive feedback!
To leave a review, please go to: uk.trustpilot.com/review/hyundaipowerequipment.co.uk
Ordering Spare Parts
You can find the spare part you are looking for in the ‘Spare Parts’ section of this manual or visit
power-spares.co.uk

Generators
Leisure Inverter, Petrol, Diesel And Built-In
Motorhome Generators
Pressure Washers
Petrol, Diesel And Electric Pressure Washers
Water Pumps
Submersible, Clean And Dirty Water And
Professional Chemical Water Pumps
Lawnmowers
Petrol, Cordless, Electric, Roller, Self Propelled,
Electric Start And Robotic Lawnmowers
Grass Trimmers And Brush Cutters
Petrol, Cordless, Electric And Wheeled Grass
Trimmers And Brush Cutters
Chainsaws
Petrol, Cordless And Electric Chainsaws
Hedge Trimmers
Petrol And Cordless Hedge Trimmers
Leaf Blowers
Petrol, Electric, Cordless, Backpack And 3 -in-1
Leaf Blowers
Log Splitters
Horizontal, Vertical, Petrol And Electric Log
Splitters
Wood Chippers
Petrol And Electric Start Wood Chippers
Tillers
Petrol Garden Tiller And Cultivator
Earth Augers And Trenchers
Petrol Earth Augers And Heavy Duty Trenchers
Compactor Plates
Petrol Compactor Plates
Cement Mixers
Portable Electric Cement Mixers
If you would like more information on any of
these products, please contact our sales team
on 01646 687880 or visit our website
www.hyundaipowerproducts.co.uk
Mini Dumpers
4-Wheel Drive Mini Dumpers And Tracked
Dumpers
Yard Sweeper
Self Propelled Yard Sweeper Power Brush
Scarifiers
Petrol Lawn Scarifier And Aerator
Stump Grinders
Petrol 4-Stroke Stump Grinders
Welders And Plasma Cutters
MIG, TIG, MMA, ARC Welders And Plasma Cutters
Power Tools And Tool Chests
Electric And Cordless Power Tools And Filled Tool
Chests
Vacuum Cleaners
Wet And Dry Vacuum Cleaners
Engines
Petrol And Electric Start Engines
Battery Chargers / Starters
6V, 12V, 24V Battery Chargers, Jump Starters And
Hydraulic Floor Jack
Air Compressors
Home, Domestic, DIY And Professional Use Air
Compressors
Lighting Towers
Mobile Lighting Towers With Diesel Generators
Portable Power Stations
Camping Power Packs And Solar Chargers
And More
We Are Constantly Expanding Our Range With
New Products
Our Product Range
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Product Information
Date Of Purchase: ........................................................................................................................
Dealer Name:.................................................................................................................................
Dealer Phone:................................................................................................................................
Model Number:.............................................................................................................................
Serial Number:..............................................................................................................................
As soon as you have purchased the machine, we recommend that you fill out the
following. If you need to contact an authorised dealer or customer service for
information on servicing, you may need to provide the following information.
The model number and serial number can be found on the grey specification sticker on
your machine.
1st Service
Date Of Service..............................
Next Service Due...........................
2nd Service
Date Of Service..............................
Next Service Due...........................
3rd Service
Date Of Service..............................
Next Service Due...........................
4th Service
Date Of Service..............................
Next Service Due...........................
Information
Service Record

Need Help? Talk To Our Experts
Contact Us
Our friendly aftersales team will be more than happy to help you.
Phone
Call our team on 01646 687880, open Monday-Friday 8.30am-5pm.
Email
Online Live Chat
Go to www.hyundaipowerproducts.co.uk
Live chat is open Monday-Friday from 8.30am-5pm.
Post
Genpower Limited, Isaac Way, Pembroke Dock, Pembrokeshire, SA72 4RW, UK.
59
www.hyundaipowerproducts.co.uk
01646 687 880 [email protected].uk

Importer:
GENPOWER LTD
Isaac Way, London Road,
Pembroke Dock, UNITED KINGDOM, SA72 4RW
T: +44 (0) 1646 687 880 F: +44 (0) 1646 686 198
www.hyundaipowerproducts.co.uk
Imported/Distributed by Genpower Ltd for The United Kingdom & Ireland
Licensed by Hyundai Corporation, Korea





