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.

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WARNING ！
Gasoline is highly flammable and explosive, and you can be burned or seriously
injured when refueling.
● Stop engine and keep heat, sparks, and flame away.
● Refuel only outdoors.
● Wipe up spills immediately.
Adding Fuel
1. Remove the fuel tank cap.
2. Add fuel to the bottom of the fuel
level limit in the neck of the fuel tank.
Do not overfill. Wipe up spilled fuel before starting the water pump.
ENGINE OIL LEVEL CHECK
Check the engine oil level with the engine stopped and in a level position.
1. Remove the filler cap/dipstick and wipe it
clean.
2. Insert and remove the dipstick with out
screwing it into the filler neck.
Check the oil level shown on the dipstick.
3. If the oil level is low, fill to the edge of the oil filler hole with the recommended oil.
4. Screw in the filler cap/dipstick securely.
ENGINE OIL CHANGE
Drain the used oil while the engine is warm. Warm oil drains quickly and completely.
Warning! Pay attention that the engine oil may be very hot if it is drained off
directly after the engine is shut off, or allow the engine to cool a few
minutes before draining the oil.
1. Place a suitable container below the engine to catch the used oil, then remove the
filler cap/dipstick, drain plug, and washer.
2. Allow the used oil to drain completely,
then reinstall the drain plug, washer, and
tighten drain plug securely.

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3. With the engine in a level position, fill to the outer edge of the oil filler hole with
the recommended oil .
4. Screw in the filler cap/dipstick securely.
ENGINE OIL RECOMMENDATIONS
Oil is a major factor affecting performance and service life. Use 4-stroke
automotive detergent oil.SAE 10W-30 is recommended for general use.
Warning! We suggest you take used oil in
a sealed container to your local recycling
center or service station for reclamation.
Do not throw it in the trash, pour it on the
ground, or down a drain as the oil or
gasoline concerning the toxicity.
AIR CLEANER SERVICE
A dirty air filter will restrict air flow to the carburetor, reducing engine performance.
If you operate the engine in very dusty areas, clean the air filter more often than
specified in the MAINTENANCE SCHEDULE.
NOTICE
Operating the engine without an air filter, or with a damaged air filter,
will allow dirt to enter the engine, causing rapid
engine wear.
Dual Filter Element Types
1. Remove the wing nut from the air cleaner cover,
and remove the cover.
2. Remove the wing nut from the air filter, and remove
the filter.
3. Remove the foam filter from the paper filter.
4. Inspect both air filter elements, and replace them if
they are damaged.

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5. Clean the air filter elements if they are to be reused.
Paper air filter element: Tap the filter element several times on a hard surface to
remove dirt.
Never try to brush off dirt; brushing will force dirt into the fibers.
Foam air filter element: Clean in warm soapy water, rinse, and allow to dry
thoroughly.
Dip the filter element in clean engine oil, then squeeze out all excess oil.
6. Wipe dirt from the inside of the air cleaner base and cover, using a moist rag.
7. Place the foam air filter element over the paper element, and reinstall the
assembled air filter. Be sure the gasket is in place beneath the air filter. Tighten the air
filter wing nut securely.
8. Install the air cleaner cover, and tighten the cover wing nut securely.
SEDIMENT CUP CLEANING
1. Move the fuel valve to the OFF position, then remove the fuel sediment cup and
O-ring.
2. Wash the sediment cup and O-ring in
nonflammable solvent, and dry them thoroughly.
3. Place the O-ring in fuel valve, and install the
sediment cup. Tighten the sediment securely.
4. Move the fuel valve to the ON position, and
check for leaks. Replace the O-ring if there is any
leakage.
SPARK PLUG SERVICE
Recommended spark plug: F6RTC
1. Disconnect the spark plug cap, and remove
any dirt from around the spark plug area.
2. Remove the spark plug with a spark plug
wrench.
3. Inspect the spark plug. Replace it if the
electrodes are worn, or if the insulator is cracked or chipped.

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4. Measure the spark plug electrode gap with a suitable gauge. The gap should be
0.028~0.031 in (0.70~0.80mm). Correct the gap if necessary, by carefully bending the
side electrode.
5. Install the spark plug carefully, by hand, to avoid cross-threading.
6. After the spark plug seats, tighten with a spark plug wrench to compress the
sealing washer.
If reinstalling the used spark plug, tighten 1/8-1/4 turn after the spark plug seats.
If installing a new spark plug, tighten 1 / 2 turn after the spark plug seats.
NOTICE
A loose spark plug can overhand and damage the
engine.
Overtightening the spark plug can damage the
threads in the cylinder head.
7. Attach the spark plug cap.
STORING YOUR WATER PUMP
Storage Preparation
Proper storage preparation is essential for keeping
your water pump troublefree and looking good.
Cleaning
If the water pump has been running, allow it to cool for at least half an hour before
cleaning. Clean all exterior surfaces, touch up any damaged paint, and coat other
areas that may rust with a light film of oil.
Fuel
Gasoline will oxidize and deteriorate in storage. Old gasoline will cause hard starting,
and it leaves gum deposits that clog the fuel system.
If the gasoline in your water pump deteriorates during storage, you may need to have
the carburetor and other fuel system components serviced or replaced.
You can extend fuel storage life by adding a fuel stabilizer, or you can avoid fuel
deterioration problems by draining the fuel tank and carburetor.

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ADDING A FUEL STABILIZER TO EXTEND FUEL STORAGE LIFE
When adding a fuel stabilizer, fill the fuel
tank fresh gasoline.
1. Add fuel stabilizer following the
manufacturer's instructions.
2. After adding a fuel stabilizer, run the
water pump outdoors for 10 minutes to be
sure that treated gasoline has replace the
untreated gasoline in the carburetor.
3. Stop the engine, and move the fuel valve
to the OFF position.
DRAINING THE FUEL AND CARBURETOR
1. Place an approved gasoline container
below the carburetor, and use a funnel to
avoid spilling fuel.
2. Remove the carburetor drain bolt and
sediment cup, then move the fuel valve
lever to the ON position.
ENGINE OIL
1. Change the engine oil.
2. Remove the spark plugs.
3. Pour a tablespoon (5~10cc) of clean engine oil into the cylinder.
4. Pull the starter rope several times to distribute the oil in the cylinder.
5. Reinstall the spark plug.
6. Pull the starter rope slowly until resistance is felt. This will close the valves so
moisture cannot enter the engine cylinder. Return the starter rope gently.
Storage Precautions
Select a well ventilated storage area away from any appliance that operates with a
flame, such as a furnace, water heater, or clothes dryer.

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Also avoid any area with a spark-producing electric motor, or where power tools are
operated.
If possible, avoid storage areas with high humidity, because that promotes rust and
corrosion.
Unless all fuel has been drained from the fuel tank, leave the fuel valve lever in the
OFF position to reduce the possibility of fuel leakage.
With the engine cool, cover the engine to keep out dust.
Do not use sheet plastic as a dust cover. A nonporous cover will trap moisture around
the engine, promoting rust and corrosion.
Removal From Storage
Check your engine as described in the BEFORE OPERATION chapter of this manual.
If the fuel was drained during storage preparation, fill the tank with fresh gasoline.
Gasoline oxidizes and deteriorates over time, causing hard starting.
TRANSPORTING
This machine must be kept in a equilibrium position, can not be side turn during the
transport
In the figure below, the center of gravity of the machine is suitable for the lifting
position of the machine.
If the engine has been running, allow it to cool for at least 15 minutes before loading
the engine-powerd equipment on the transport vehicle. A hot engine and exhaust
system can burn you and can ignite some materials.

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Keep the engine level when transporting to reduce the possibility of fuel leakage.
Move the fuel valve lever to the OFF position.
TAKING CARE OF UNEXPECTED PROBLEMS
ENGINE WILL NOT START
ENGINE WILL NOT START
Possible Cause
Correction
1. Check control positions.
Fuel valve OFF.
Move lever to ON.
Choke OFF.
Move the choke / throttle
lever to CHOKE ON position
unless engine is warm.
Ignition switch OFF.
Move the throttle lever to
FAST position.
2. Check fuel.
Out of fuel.
Refuel
Bad fuel; engine stored without
treating or draining gasoline, of
refueled with bad gasoline.
Drain the fuel tank and
carburetor. Refuel with
fresh gasoline.
3. Remove and inspect
spark plug.
Spark plug faulty, fouled, or
improperly gapped.
Replace the spark plug.
Spark plug wet with fuel
(flooded engine).
Dry and reinstall spark plug.
Start engine with choke /
throttle lever in FAST
position.
4. Take engine to a
technician.
Fuel filter clogged, carburetor
malfunction, ignition
malfunction,
valves stuck, etc.
Replace or repair faulty
components as necessary.
ENGINE LACKS POWER
ENGINE LACKS POWER
Possible Cause
Correction
1. Check air cleaner.
Air cleaner elements
clogged.
Clean or replace air
cleaner elements.

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2. Check fuel.
Bad fuel; engine stored
without treating or draining
gasoline, of refueled with
bad gasoline.
Drain the fuel tank and
carburetor. Refuel with
fresh gasoline.
3. Take engine to a
technician.
Fuel filter clogged,
carburetor malfunction,
ignition malfunction, valves
stuck, etc.
Replace or repair faulty
components as necessary.
NO PUMP OUTPUT
NO PUMP OUTPUT
Possible Cause
Correction
1. Check pump chamber.
Pump not primed.
Prime pump.
2. Check suction hose.
Hose collapsed, cut or
punctured.
Replace suction hose.
Strainer not completely
underwater.
Sink the strainer and the
end of a suction hose
completely underwater.
Air leak at connector.
Replace sealing washer if
missing or damaged.
Tighten hose connector
and clamp.
Strainer clogged.
Clean debris from strainer.
3. Measure suction and
discharge
head.
Excessive head.
Relocate pump and / or
hoses to reduce head.
Check engine.
Engine lacks power.
See page 16.

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LOW PUMP OUTPUT
LOW PUMP OUTPUT
Possible Cause
Correction
1. Check suction hose.
Hose collapsed, damaged,
too long, or diameter too
small.
Replace suction hose.
Air leak at connector.
Replace sealing washer if
missing or damaged.
Tighten hose connector
and clamp.
Strainer clogged.
Clean debris from strainer.
2. Check discharge hose.
Hose damaged, too long,
or diameter too small
Replace discharge hose.
3. Measure suction and
discharge head.
Marginal head.
Relocate pump and / or
hoses to reduce head.
4. Check engine.
Engine lacks power.
See page 16.
SPECIFICATIONS
Engine design and performance (HY50-A-1)
Model
PT170F
Engine type
4-stroke, OHV, single cylinder
Displacement
212 cc
Bore×stroke
70× 55 mm
Fuel tank capacity
3.6l
Rated output
4.0kW/3600/min
Engine oil capacity
0.6l
Fuel consumption
395g/kW.h
Cooling system
Forced air cooling
Ignition system
Transistorized magneto
PTO shaft rotation
Counterclockwise

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Pump (HY50-A-1)
Max. Head
30m
Suction head
7m
Flow
33m3/h
Diameter of suction pipe
50mm
Diameter of discharge pipe
50mm
Engine type
PT170F
Rated output power
3.2kW/3600/min
Net weight
22kg
Max. Permissible pressure
0.25MPa
Measured sound pressure level
88.7dB(A)
Measured sound power level
101.6dB(A), K=4.42 dB(A)
Guaranteed sound power level
106dB(A)
Engine design and performance (HY80-A-1)
Model
PT170F
Engine type
4-stroke, OHV, single cylinder
Displacement
212 cc
Bore×stroke
70× 55 mm
Fuel tank capacity
3.6l
Rated output
4.0kW/3600/min
Engine oil capacity
0.6l
Fuel consumption
395g/kW.h
Cooling system
Forced air cooling
Ignition system
Transistorized magneto
PTO shaft rotation
Counterclockwise