Hyundai power products HY50-A-1 User manual

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-EN-
MOTOR-PUMP PETROL
HY50-A-1 / HY80-A-1
ORIGINAL INSTRUCTIONS

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Intended use
This thermal water pump is intended to be used mainly for
drainage, evacuation and transfer of water, drawing and
evacuation of water and boats or, for a limited time, to circulation
and re-oxygenation of water.
Any other use not expressly permitted in this manual may result in
damage to the device, may be a serious hazard to the user and is
not permitted.
This machine must NEVER be used:
-For professional use or agriculture
-For public gardens or forest maintenance
-By children fewer than 16 and unaccompanied minors
Please observe carefully all the notes, explanations and
instructions in this manual for optimum and safe use of this
machine.
This machine is intended for private and domestic use.
Any misuse can cause accidents and malfunction of the
machine. Follow the instructions in this manual to use the
tool correctly.
SAFETY INFORMATION
Read and understand this owner's manual before operating your water pump. You
can help prevent accidents by being familiar with your water pump’s controls, and by
observing safe operating procedures.
Operator Responsibility
● Know how to stop the engine quickly in case of emergency.
● Understand the use of all water pump controls.
● Do not let children operate the water pump without parental supervision. Keep
children and pets away from the area of operation.

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●This pump CAN NOT be used for dirty water and sea water.
Refuel With Care
Gasoline is extremely flammable, and gasoline vapor can explode. Refuel outdoors, in
a well-ventilated area, with the engine stopped. Never smoke near gasoline, and keep
other flames and sparks away.
Hot Exhaust
● The muffler becomes very hot during operation and remains hot for a while after
stopping the engine. Be careful not to touch the muffler while it is hot. Let the water
pump cool before storing it indoors.
● To prevent fire hazards, keep the water pump at least 3 feet (1meter) away from
building walls and other equipment during operation.
Carbon Monoxide Hazards
● Exhaust contains poisonous carbon monoxide, a colorless and odorless gas.
Breathing exhaust directly can cause loss of consciousness and may lead to death.
● If you run the water pump in an area that is confined, the air you breathe could
contain a dangerous amount of exhaust gas. To keep exhaust gas from accumulating,
provide adequate ventilation.

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CONTROLS & FEATURES
COMPONENT & CONTROL LOCATION
CONTROLS
Fuel Valve Lever
The fuel valve opens and closes the passage between
the fuel tank and the carburetor.
The fuel valve lever must be in the ON position for the
engine to run.
When the engine is not in use, leave the fuel valve
lever in the OFF position to prevent carburetor flooding
and to reduce the possibility of fuel leakage.

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Engine Switch
The engine switch enables and disables the ignition system.
The engine switch must be in the ON position for the engine to run.
Turning the engine switch to the OFF position stops the engine.
Choke Lever
The choke lever opens and closes the choke valve in
the carburetor.
The CLOSED position enriches the fuel mixture for
starting a cold engine.
The OPEN position provides the correct fuel mixture
for operation after starting, and for restarting a warm
engine.
Throttle Lever
The throttle lever controls engine speed.
Moving the throttle lever in the directions shown
makes the engine run faster or slower.
Recoil Starter Grip
Pulling the starter grip operates the recoil starter
to crank the engine.
FEATURES
Oil Alert System
The Oil Alert system is designed to prevent engine damage caused by an insufficient
amount of oil in the crankcase.
Before the oil level in the crankcase can fall below a safe limit, the Oil Alert system
will automatically stop the water pump.
BEFORE OPERATION CHECKS
Check the Suction and Discharge Hoses
● Remember that the suction hose must be reinforced construction to prevent hose
collapse.

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● Check that the sealing washer in the suction hose connector is in good condition.
●Check that the hose connectors and clamps are securely installed.
● Check that the strainer is in good condition and is installed on the suction hose.
Check the Engine
● Check the oil lever.
● Check the air filter.
● Check the fuel level.
OPERATION
PUMP PLACEMENT
For best pump performance, place the pump near the water level, and use hose that
are no longer than necessary. That will enable the pump to produce the greatest
output with the least self-priming time.
As head (pumping height) increases, pump output decrease. The length, type, and
size of the suction and discharge hoses can also significantly affect pump output.
Minimizing suction head (placing the pump near the water lever) is also very
important for reducing self-priming time. Self-priming time is the time it takes the
pump to bring water the distance of the suction head during initial operation.
SUCTION HOSE INSTALLATION
Do not use a hose smaller than the pump's suction port size.
Pump performance is best when the pump is near the water level, and the hoses are
short.
Minimum hose size: 50 mm
Use a hose clamp to securely fasten the hose connector to the suction hose in order
to prevent air leakage and loss of suction. Verify that the hose connector sealing
washer is in good condition.
Install the strainer on the other end of the suction hose, and secure it with a hose
clamp. The strainer will help to prevent the pump from becoming clogged or
damaged by debris.

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Securely tighten the hose connector on the pump suction port.
DISCHARGE HOSE INSTALLATION
It is best to use a short, large-diameter hose, because
that will reduce fluid friction and improve pump
output.
Tighten the hose clamp securely to prevent the
discharge hose from disconnecting under pressure.
PRIMING THE PUMP
Before starting the engine, remove the filler cap from the pump chamber, and
completely fill the pump chamber with water. Reinstall the filler cap, and tighten it
securely.
NOTICE
Operating the pump dry will destroy the
pump seal. If the pump has been
operated dry, stop the engine immediately,
and allow the pump to cool before priming.
STARTING THE ENGINE
1. Prime the pump.
2. Move the fuel valve lever to the ON position.
3. To start a cold engine, move the choke lever to
the CLOSED position.
To restart a warm engine, leave the choke lever in
the OPEN position.
4. Move the throttle lever from the SLOW position

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about 1/3 of the way toward the FAST position.
5. Turn the engine switch to the ON position.
6. Operate the starter.
Pull the starter grip lightly until you feel resistance, then pull
briskly.
Return the starter grip gently.
7. If the choke lever has been moved to the CLOSED
position to start the engine, gradually move it to the
OPEN position as the engine warms up.
STOPPING THE ENGINE
To stop the engine in an emergency, simply turn the
engine switch to the OFF position.
Under normal conditions, use the following procedure.
1. Move the throttle lever to the SLOW position.
2. Turn the engine switch to the OFF position.
3. Turn the fuel valve lever to the OFF position.

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SETTING ENGINE SPEED
Position the throttle lever for the desired engine
speed.
For engine speed recommendations, refer to the
instructions provided with the equipment
powered by this engine.
SERVICING YOUR PUMP
If you operate your water pump under severe conditions, such as sustained high-load
or high-temperature operation, or use in unusually wet or dusty conditions, consult
your technician for recommendations applicable to your individual needs and use.
To ensure the best quality and reliability, use only new, genuine parts or their
equivalents for repair and replacement.
SAFETY PRECAUTIONS
Make sure the engine is off before you begin any maintenance or repair.
This will eliminate several potential hazards:
● Carbon monoxide poisoning from engine exhaust.
Be sure there is adequate ventilation whenever you operate the water pump.
● Burns from hot parts.
Let the water pump cool before touching.
● Injury from moving parts.
Do not run the water pump unless instructed to do so.
Read the instructions before you begin, and make sure you have the tools and skills
required.
To reduce the possibility of fire or explosion, be careful when working around
gasoline. Use only a nonflammable solvent, not gasoline, to clean parts. Keep
cigarettes, sparks and flames away from all fuel related parts.
Remember that a technician knows your water pump best and is fully equipped to
maintain and repair it.

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MAINTENANCE SCHEDULE
● Emission related items.
(1) Service more frequently when used in dusty areas.
(2) These items should be serviced by an technician.
(3) For commercial use, log hours of operation to determine proper maintenance
intervals.
REFUELING
Use unleaded gasoline with a pump octane rating of 86 or higher.
Unleaded gasoline produces fewer engine and spark plug deposits and extends
exhaust system life.