iPower SUWP50 User manual

WATER PUMP OPERATION INSTRUCTION
THIS MANUAL CONTAINS IMPORTANT INFORMATION REGARDING SAFETY, OPERATION, MAINTENANCE
AND STORAGE OF THIS PRODUCT. BEFORE USE, READ CAREFULLY AND UNDERSTAND ALL CAUTIONS,
WARNINGS, INSTRUCTIONS AND PRODUCT LABELS. FAILURE TO DO SO COULD RESULT IN SERIOUS
PERSONAL INJURY AND/OR PROPERTY DAMAGE
10/2014 0201100_A

Thank you for purchasing a water pump.
This manual covers the operation and maintenance of water pump
The information and specifications included in this publication were in effect at
the time of approval for printing.
No part of this publication may be reproduced without written permission.
This manual should be considered a permanent part of the pump and should
remain with the pump if it is resold.
The illustration may vary according to the type.
Keep this owner’s manual handy, so you can refer to it at any time. This owner’s
manual is considered a permanent part of the water pump and should remain
with the water pump if resold.
If a problem should arise, or if you have any questions about the pump, consult
you authorized dealer.

2
CONTENTS
1. PUMP SAFETY ………………………………………………………………….. 3
2. COMPONENTS & CONTROL LOCATIONS ………………………………… 5
3. CONTROLS …………………………………………………...…………………6
4. CHECK BEFORE OPERATION .................................................................. 8
5. OPERATION ……………………………………………………………………..12
6. STARTING THE ENGINE ......................................................................……15
7. STOPPING THE ENGINE ........................................................................... 17
8. MAINTENANCE ........................................................................................... 18
9. TRANSPORTING/STORAGE ………………………………...………………. 25
10. TROUBLESHOOTING ………………….……. …………..………………….. 29
11. SPECIFICATIONS ………………………………………….…………………….31
12. CONSUMER INFORMATION ...................................................................... 32

3
1. PUMP SAFETY
Your safety and the safety of others are very important. And using this water
pump safely is an important responsibility.
To help you make informed decisions about safety, we have provided operating
procedures and other information on labels and in this manual. This information
alerts you to potential hazards that could hurt you or others.
Of course, it is not practical or possible to warn you about all the hazards
associated with operating or maintaining a water pump. You must use your own
good judgment.
You will find important safety information in a variety of forms, including:
Safety Labels –– on the pump.
Safety Messages –– preceded by a safety alert symbol and one of three
signal words, DANGER, WARNING, or CAUTION. These signal words
mean:
You WILL be KILLED or SERIOUSLY HURT if you don’t
follow instructions.
You CAN be KILLED or SERIOUSLY HURT if you don’t
follow instructions.
You CAN be HURT if you don’t follow instructions.
Your pump or other property could be damaged if you
don’t follow instructions.
Safety Headings –– such as IMPORTANT SAFETY INFORMATION.
Safety Section –– such as PUMP SAFETY.
Instructions –– how to use this pump correctly and safely.
This entire book is filled with important safety information –– please read it
carefully.

4
Always make a pre-operation inspection before you start the engine. You may
prevent an accident or equipment damage.
Most accidents can be prevented if you follow all instructions in this manual and
on the pump. The most common hazards are discussed below, along with the
best way to protect yourself and others.
Operator Responsibility
It is the operator’s responsibility to provide the necessary safeguards to protect
people and property. Know how to stop the pump quickly in case of emergency. If
you leave the pump for any reason, always turn the engine off. Understand the
use of all controls and connections.
Be sure that anyone who operates the pump receives proper instruction. Do not
let children operate the pump. Keep children and pets away from the area of
operation.
Pump Operation
Pump only water that is not intended for human consumption. Pumping
flammable liquids, such as gasoline or fuel oils, can result in a fire or explosion,
causing serious injury. Pumping sea water, beverages, acids, chemical solutions,
or any other liquid that promotes corrosion can damage the pump.
Refuel With Care
Gasoline is extremely flammable, and gasoline vapor can explode. Refuel
outdoors, in a well-ventilated area, with the engine stopped and the pump on a
level surface. Do not fill the fuel tank above the fuel strainer shoulder. Never
smoke near gasoline, and keep other flames and sparks away. Always store
gasoline in an approved container. Make sure that any spilled fuel has been
wiped up before starting the engine. After refueling, make sure the tank cap
closed properly and securely.
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
engine cool before transporting the pump or storing it indoors.
To prevent fire hazards, keep the pump at least 3 feet (1 meter) away from
building walls and other equipment during operation. Do not place flammable
objects close to the engine.
Carbon Monoxide Hazard
Exhaust gas contains poisonous carbon monoxide. Avoid inhalation of exhaust
gas. Never run the engine in a closed garage or confined area.

5
2. COMPONENTS & CONTROL LOCATIONS
THROTTLE
LEVER
CHOKE
LEVER
DISCHARGE PORT
FUEL VALVE
LEVER
STARTER GRIP
IGNITION
SWITCH
OIL FILLER
CAP/DIPSTICK
FUEL FILLER
CAP
PRIMING WATER
FILLER CAP
FRAME
AIR CLEANER
MUFFLER
SUCTION P
ORT
PUMP DRAIN CAP
OIL DRAIN PLUG

6
3. CONTROLS
Read and understand this manual. Know what the controls do and how to
operate them.
Familiarize yourself with the pump and its operation before you begin pumping.
Know what to do in case of emergencies.
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.
Ignition Switch
The ignition switch controls the ignition system.
The ignition switch must be in the ON position for the engine to run.
Turning the ignition switch to the OFF position stops the engine.
OFF
ON
IGNITION SWITCH
FUEL VALVE LEVER
ON
O
FF

7
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.
Pump output is controlled by adjusting the throttle lever. At maximum throttle
position, the pump will deliver the highest output volume. Moving the throttle
lever toward the idle position will decrease the output volume of the pump.
Recoil Starter Grip
Pulling the recoil starter grip operates
the recoil starter to crank the engine.
RECOIL STARTER GRIP
OPEN
CL
O
SE
CHOKE LEVER
SL
O
W
THROTTLE LEVER
FAST

8
4. CHECK BEFORE OPERATION
Be sure of what you are pumping. This pump is designed to pump only fresh
water that is not intended for human consumption.
For your safety, and to maximize the service life of your equipment, it is very
important to take a few moments before you operate the pump to check its
condition. Be sure to take care of any problem you find, or have your servicing
dealer correct it, before you operate the pump.
Improperly maintaining this pump, or failing to correct a
problem before operation, could cause a malfunction in
which you could be seriously injured.
Always perform a preoperation inspection before each operation, and
correct any problem.
Exhaust gas contains poisonous carbon monoxide. Avoid inhalation of exhaust
gas. Never run the engine in a closed garage or confined area.
To prevent fire hazards, keep the pump at least 3 feet (1 meter) away from
building walls and other equipment during operation. Do not place flammable
objects close to the engine.
Before beginning your preoperation checks, be sure the pump is on a level
surface and the ignition switch is in the OFF position.
Check the General Condition of the Pump
Look around and underneath the pump for signs of oil or gasoline leaks.
Remove any excessive dirt or debris, especially around the engine muffler, and
recoil starter.
Look for signs of damage.
Check that all nuts, bolts, screws, hose connectors and clamps are tightened.
Check the Suction and Discharge Hoses
Check the general condition of the hoses. Be sure the hoses are in serviceable
condition before connecting them to the pump. Remember that the suction hose
must be reinforced construction to prevent hose collapse.
Check that the sealing washer in the suction hose connector is in good condition
(see page 13).

9
Check that the hose connectors and clamps are securely installed (see pages 13
& 14).
Check that the strainer is in good condition and is installed on the suction hose
(see page 13).
CHECK ENGINE OIL LEVEL
Check the engine oil level with the engine stopped and in a level position.
1. Remove the oil filler cap/dipstick and wipe it clean.
2. Insert and remove the dipstick without 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 (see page 21).
4. Screw in the oil filler cap/dipstick securely.
Running the engine with a low oil level can cause engine
damage.
Engine oil capacities：
SUWP25:0.35L
SUWP50,SUWP80:0.6L
SUWP100:1.1L
AIR FILTER INSPECTION
A dirty air filter will restrict air flow to the carburetor, reducing engine and pump
performance.
OIL FILLER CAP/DIPSTICK
OIL FILLER NECK
UPPER LIMIT
LOWER LIMIT

10
Remove the air cleaner cover and inspect the filter. Clean or replace dirty filter
elements. Always replace damaged filter elements. If equipped with an oil-bath
air cleaner, also check the oil level.
Reinstall the air filter and air cleaner cover. Be sure all the parts shown below are
in place. Tighten the wing nut securely.
Operating the engine without an air filter, or with a damaged
air filter, will allow dirt to enter the engine, causing rapid
engine wear. This type of damage is not covered by the
Distributor’s Limited Warranty.
CHECK FUEL LEVEL
With the engine stopped and on a level surface, remove the fuel tank cap and
check the fuel level. Refill the tank if the fuel level is low. After refueling, tighten
the fuel tank cap securely.
Gasoline is highly flammable and explosive. You can be
burned or seriously injured when handling fuel.
·
··
·Stop the engine and keep heat, sparks, and flame away.
·
··
·Handle fuel only outdoors.
·
··
·Wipe up spills immediately.
PAPER
FILTER
ELEMENT
FOAM
FILTER
ELEMENT

11
Do not fill above the shoulder of the fuel strainer (maximum
fuel level).
FUEL RECOMMENDATIONS
Use unleaded gasoline with a pump octane rating of 86 or higher.
These engines are certified to operate on unleaded gasoline. Unleaded gasoline
produces fewer engine and spark plug deposits and extends exhaust system life.
Never use stale or contaminated gasoline or an oil/gasoline mixture. Avoid
getting dirt or water in the fuel tank.
Occasionally you may hear a light ‘‘spark knock’’ or ‘‘pinging’’ (metallic rapping
noise) while operating under heavy loads. This is no cause for concern.
If spark knock or pinging occurs at a steady engine speed, under normal load,
change brands of gasoline. If spark knock or pinging persists, see an authorized
servicing dealer.
Running the engine with persistent spark knock or pinging
can cause engine damage.
Running the engine with persistent spark knock or pinging is misuse, and
the Distributor’s Limited Warranty does not cover parts damaged by
misuse.
MAXIMUM FUEL LEVEL

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5. OPERATION
SAFE OPERATING PRECAUTIONS
To safely realize the full potential of this pump, you need a complete
understanding of its operation and a certain amount of practice with its controls.
Before operating the pump for the first time, please review the IMPORTANT
SAFETY INFORMATION on page 3 and the chapter titled CHECK BEFORE
OPERATION.
For your safety, avoid starting or operating the engine in an enclosed area, such
as a garage. Your engine’s exhaust contains poisonous carbon monoxide gas
which can collect rapidly in an enclosed area and cause illness or death.
Pump only fresh water that is not intended for human consumption. Pumping
flammable liquids, such as gasoline or fuel oils, can result in a fire or explosion,
causing serious injury. Pumping sea water, beverages, acids, chemical solutions,
or any other liquid that promotes corrosion can damage the pump.
PUMP PLACEMENT
For best pump performance, place the pump near the water level, and use hoses
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 decreases. The length, type,
and size of the suction and discharge hoses can also significantly affect pump
output.
Discharge head capability is always greater than suction head capability, so it is
important for suction head to be the shorter part of total head.
Minimizing suction head (placing the pump near the water level) is also very
important for reducing self-priming time. Self-priming time is the time that takes
the pump to bring water the distance of the suction head during initial operation.
SUCTION
HEAD
DISCHARGE
HEAD
TOTAL HEAD

13
SUCTION HOSE INSTALLATION
Use a commercially available hose and hose connector with the hose clamp
provided with the pump. The suction hose must be reinforced with a
non-collapsible wall or braided wire construction.
Do not use a hose smaller than the pump’s suction port size. Minimum hose size:
WP25(25mm),WP50.CP50.HP50(50mm),WT80.WP80(80mm),WP100(100mm).
The suction hose should be no longer than necessary. Pump performance is best
when the pump is near the water level, and the hoses are short.
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 (provided with the pump) 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.
Securely tighten the hose connector on the pump suction port.
SUCTION HOSE
HOSE CLAMP
STRAINER
HOSE CLAMP
HOSE CLAMP
HOSE CONNECTOR (COMMERCIALLY AVAILABLE)
SUCTION HOSE
HOSE CONNECTOR
(COMMERCIALLY
AVAILABLE)
HOSE CLAMP RING
HOSE COUPLER
SEALING WASHERSUCTION PORT

14
DISCHARGE HOSE INSTALLATION
Use a commercially available hose and hose connector, and clamp provided with
the pump.
It is best to use a short, large-diameter
hose, because that will reduce fluid
friction and improve pump output. A long
or small-diameter hose will increase fluid
friction and reduce 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.
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.
HOSE CONNECTOR
HOSE CLAMP
DISCHARGE HOSE
PRIMING WATER FILLER CAP

15
6. STARTING THE ENGINE
1. Prime the pump (see page 14).
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 away from the SLOW position about 1/3 of the way
toward the FAST position.
5. Turn the ignition switch to the ON position.
FUEL VALVE LEVER
ON
CHOKE LEVER
CLOSED
SLOW
THROTTLE LEVER
IGNITION SWITCH
ON

16
6. Pull the recoil starter grip lightly until
resistance is felt, then pull it briskly.
Do not allow the recoil starter grip to
snap back against the engine.
Return it gently to prevent damage
to the starter.
7. If the choke lever was moved to the CLOSED position to start the engine,
gradually move it to the OPEN position as the engine warms up.
8. setting engine speed
After starting the engine, move the throttle lever to the FAST position for
self-priming, and check pump output.
Pump output is controlled by adjusting engine speed. Moving the throttle lever in
the FAST direction will increase pump output, and moving the throttle lever in the
SLOW direction will decrease pump output.
RECOIL STARTER GRIP
SLOW
THROTTLE LEVEL
FAST
CHOKE LEVEL
OPEN

17
7. STOPPING THE ENGINE
To stop the engine in an emergency, simply turn the ignition switch to the OFF
position. Under normal conditions, use the following procedure.
1. Move the throttle lever to the SLOW position.
2. Turn the ignition switch to the OFF position.
3. Turn the fuel valve lever to the OFF position.
After use, remove the pump drain plug (see page 39), and drain the pump
chamber. Remove the filler cap, and flush the pump chamber with clean, fresh
water. Allow the water to drain from the pump chamber, then reinstall the filler
cap and drain plug.
8. MAITENANCE
IGNITION SWITCH
OFF
SLOW
THROTTLE LEVEL
OFF
FUEL LEVEL

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THE IMPORTANCE OF MAINTENANCE
Good maintenance is essential for safe, economical, and trouble-free operation.
It will also help reduce air pollution.
Improperly maintaining this pump, or failing to correct a
problem before operation, can cause a malfunction in
which you can be seriously hurt or killed.
Always follow the inspection and maintenance recommendations and
schedules in this owner’s manual.
To help you properly care for your pump, the following pages include a
maintenance schedule, routine inspection procedures, and simple maintenance
procedures using basic hand tools. Other service tasks that are more difficult, or
require special tools, are best handled by professionals and are normally
performed by a technician or other qualified mechanic.
The maintenance schedule applies to normal operating conditions. If you operate
your pump under severe conditions, such as sustained high-load or
high-temperature operation, or use in unusually wet or dusty conditions, consult
your servicing dealer for recommendations applicable to your individual needs
and use.
Remember that your servicing dealer knows your pump best and is fully
equipped to maintain and repair it.
To ensure the best quality and reliability, use only new, genuine parts or their
equivalents for repair and replacement.
Maintenance, replacement, or repair of emission control devices and
systems may be performed by any engine repair establishment or
individual, using parts that are ‘‘certified’’ to EPA standards.
MAINTENANCE SAFETY
Some of the most important safety precautions follow. However, we cannot warn
you of every conceivable hazard that can arise in performing maintenance. Only
you can decide whether or not you should perform a given task.
Failing to properly follow maintenance instructions and
precautions can cause you to be seriously hurt or killed.
Always follow the procedures and precautions in the owner’s manual.
Safety Precautions

19
Make sure the engine is off before you begin any maintenance or repairs. This
will eliminate several potential hazards:
－Carbon monoxide poisoning from engine exhaust.
Be sure there is adequate ventilation whenever you operate the engine.
－Burns from hot parts.
Let the engine and exhaust system cool before touching.
－Injury from moving parts.
Do not run the engine 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.
MAINTENANCE SCHEDULE
Performed at every indicated month or
operating hour interval, whichever comes
first.
ITEM
Each
use
First
month
or 20
Hrs.
Every 3
months or
50 Hrs.
Every 6
months
or 100
Hrs.
Every
year or
300
Hrs.
Check level ○
· Engine oil Change ○○
Check ○
· Air cleaner Clean ○(1)
· Idle speed Check-Adjust ○(2)
· Spark plug Check-Clean ○
· Spark arrester Clean ○
· Combustion chamber Clean ○(2)
· Valve clearance Check-Adjust ○(2)
· Fuel tank and strainer Clean ○(2)
· Fuel tube Check Every 2 years(Replace if necessary) (2)
Impeller Check ○(2)
Impeller clearance Check ○(2)
Pump inlet valve Check ○(2)
·Emission-related items.
(1) Service more frequently when used in dusty areas.
(2) These items should be serviced by your servicing dealer, unless you have
the proper tools and are mechanically proficient. Refer to shop manual for
service procedures.
REFUELING