Ducar DPT50 User manual

Trash Pump
MODEL: DPT50
DPT80
Original Instructions
CHONGQING DAJIANG POWER EQUIPMENT CO., LTD.
OWNER’S MANUAL

2
Thank you for purchasing a water pump.
This manual covers the operation and maintenance of water pump: DPT80
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 illustrations in this manual are based in: DPT80
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.

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CONTENTS
IMPORTANT SAFETY INFORMATION ……………………………………4
COMPONENTS & CONTROL LOCATIONS………………………………6
CHECK BEFORE OPERATION………………………………………….…7
OPERATION……………………………………………………………….…11
STARTING THE ENGINE……………………….……………………….…14
STOPPONG THE ENGINE……………………….……………………..…17
MAITENANCE…………………………………………………………….…18
MAITENANCE SCHEDULE…………………………………………….….20
TRANSPORTING / STORAGE…………………….……………………...24
TROUBLESHOOTING……………………………………………….……..28
SPECIFICATION……………………………………………………….…....30

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IMPORTANT SAFETY INFORMATION
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.
Engine Safety Information
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.

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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.

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

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 pre-operation inspection before each operation, and correct any
problem.
Exhaust gascontains poisonous carbon monoxide. Avoid inhalation of exhaust gas. Never
run the engine in a closed garage or confined area.
Toprevent 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 pre-operation 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.
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.
7

8
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 .
4. Screw in the oil filler cap/dipstick securely.
Running the engine with a low oil level can cause engine damage.
Engine oil capacities：
DPT80 :0.6L
Air Filter Inspection
A dirty air filter will restrict air flow to the carburetor, reducing engine and pump
performance.
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.
OIL FILLER CAP/DIPSTICK
OIL FILLER NECK
UPPER LIMIT
LOWER LIMIT

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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.
MAXIMUM FUE
L
PAPER
FILTER
ELEMENT
FOAM
FILTER
ELEMENT

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Do not fill above the shoulder of the fuel strainer (maximum fuel
level).
FUEL RECOMMENDATIONS
Use unleaded gasoline with a pump octane rating of 90 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.

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OPERATION
SAFE OPERATING PRECAUTIONS
Tosafely 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 4and 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

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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:
DPT80 = 3 in (80 mm)；
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
A
VAILABLE
)
HOSE CLAMP RING
HOSE COUPLER
SEALING WASHERSUCTION PORT

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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

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STARTING THE ENGINE
Prime thepump
1. Move the fuel valve lever to the ON position.
2. 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.
3. Move the throttle lever away from the SLOW position about 1/3 of the way toward the
FAST position.
FUEL VALVE LEVER
ON
CHOKE LEVER
CLOSED
SLOW
THROTTLE LEVER

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4. Turn the ignition switch to the ON position.
5. Pull the recoil starter grip lightly untilresistance 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.
6. 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.
7. setting engine speed
After starting the engine, move the throttle lever to the FAST position for self-priming, and
check pump output.
RECOIL STARTER GRIP
IGNITION SWITCH
ON
CHOKE LEVEL
OPEN

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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.
SLOW
THROTTLE LEVEL
FAST

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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 , 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.
IGNITION SWITCH
OFF
SLOW
THROTTLE LEVEL
OFF
FUEL LEVEL

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MAINTENANCE
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
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.

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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.

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MAINTENANCE SCHEDULE
Performed at every indicated month or
operating hour interval, whichever comes
first.
Each
use
First
month
or 20
Hrs.
Every 3
months or
50 Hrs.
Every 6
months
or 100
Hrs.
Every
year or
300
Hrs.
ITEM
·Engine oil Check level ○
Change ○○
·Air cleaner Check ○
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
Fuel tank capacities：
DPT80 =3.6L；
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.
MAXIMUM FUE
L