GAS-POWERED WATER PUMP
OWNER’S MANUAL
WARNING: Read carefully and understand all
INSTRUCTIONS before operating. Failure to follow the
safety rules and other basic safety precautions may result in
serious personal injury.
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this product, but must be supplied by the operator.
SAVE THESE INSTRUCTIONS
WORK AREA
· Keep work area clean, free of clutter and well lit. Cluttered and dark work areas can cause
accidents.
· Do not use your water pump where there is a risk of causing a fire or an explosion; e.g. in
the presence of flammable liquids, gasses, or dust. Gasoline engines can create sparks, which
may ignite the dust or fumes.
· Keep children and bystanders away while operating a water pump. Distractions can cause
you to lose control, so visitors should remain at a safe distance from the work area.
· Be aware of all power lines, electrical circuits, water pipes and other mechanical hazards in
your work area, particularly those hazards below the work surface hidden from the operator’s
view that may be unintentionally contacted and may cause personal harm or property damage.
· Be alert of your surroundings. Using water pumps in confined work areas may put you
dangerously close to cutting tools and rotating parts.
INTERNAL COMBUSTION ENGINE SAFETY
WARNING: Internal combustion engines present special hazards during operation and
fueling. Read and follow the warning instructions in the engine Owner’s Manual and the safety
guidelines below. Failure to follow the warnings and safety standards could result in severe injury or
death.
· DO NOT run the machine indoors or in an enclosed area such as a deep trench unless adequate
ventilation, through such items as exhaust fans or hoses, is provided. Exhaust gas from the
engine contains poisonous carbon monoxide gas; exposure to carbon monoxide can cause loss of
consciousness and may lead to death.
· DO NOT smoke while operating the machine.
· DO NOT smoke when refueling the engine.
· DO NOT refuel a hot or running engine.
· DO NOT refuel the engine near an open flame.
· DO NOT spill fuel when refueling the engine.
· DO NOT run the engine near open flames.
· ALWAYS refill the fuel tank in a well-ventilated area.
· ALWAYS replace the fuel tank cap after refueling.
· ALWAYS check the fuel lines and the fuel tank for leaks and cracks before starting the engine. Do
not run the machine if fuel leaks are present or the fuel lines are loose.
· ALWAYS avoid contact with hot fuel, oil, exhaust fumes and solid surfaces.
PERSONAL SAFETY
· Stay alert, watch what you are doing and use common sense when operating a power tool. Do
not use a water pump while you are tired or under the influence of drugs, alcohol or medication. A
moment of inattention while operating water pumps may result in serious personal injury.
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· Dress properly. Do not wear loose clothing, dangling objects, or jewelry. Keep your hair, clothing
and gloves away from moving parts. Loose clothes, jewelry or long hair can be caught in moving
parts. Air vents often cover moving parts and should be avoided.
· Use safety apparel and equipment. Use safety goggles or safety glasses with side shields
which comply with current national standards, or when needed, a face shield. Use as dust mask in
dusty work conditions. This applies to all persons in the work area. Also use non-skid safety shoes,
hardhat, gloves, dust collection systems, and hearing protection when appropriate.
· Do not overreach. Keep proper footing and balance at all times.
· Remove adjusting keys or wrenches before connecting to the power supply or turning on the
tool. A wrench or key that is left attached to a rotating part of the tool may result in personal injury.
TOOL USE AND CARE
WARNING: This pump is designed to pump water only. Never pump flammable liquids
like gasoline or diesel.
· Do not force the water pump. Pumps do a better and safer job when used in the manner for
which they are designed.
· Never use a water pump with a malfunctioning switch. A water pump that cannot be controlled
with the switch is dangerous and must be repaired by an authorized service representative before
using.
· Disconnect spark plug from engine before servicing, adjusting, installing accessories or
attachments, or storing. Such preventive safety measures reduce the risk of starting accidentally.
· Store idle water pumps. When pumps are not is use, store them in a dry, secure place out of the
reach of children. Inspect water pumps for good working condition prior to storage and before
re-use.
· Use only accessories that are recommended by the manufacturer for your model. Accessories
that may be suitable for one water pump may create a risk of injury when used on another pump.
· Keep guards in place and in working order.
· Never leave tool running unattended.
· Theoretically, air pressure and the suction head of pump will decrease while the altitude increases.
The value of decrease can be estimated by minus local atmosphere value from 10m (meter water
column).
· The filter net must be immersed in water at least a foot (0.3m) to avoid sucking air. When used
outdoors, immerse filter not less than 47 inches (1.2m) from river bottom and river bank to avoid
suction of stone or weeds.
· Always be sure operator is familiar with proper safety precautions and operation techniques
before using machine.
· Never touch the engine or muffler while the engine is on or immediately after it has been turned
off. These areas get hot and may cause burns.
· Always close fuel valve on engines when machine is not being operated.
· Always operate machine with all safety devices and guards in place and in working order. DO
NOT modify or defeat safety devices. DO NOT operate machine if any safety devices or guards
are missing or inoperative.
· NOTE: All Federal and State laws and any regulation having jurisdiction covering the safety
requirements for use of the machine take precedence over the statements in this manual. Users
of this machine must adhere to such regulations.
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ASSEMBLY
Installation of connective soft pipe:
Affix the soft rubber pipe to the connector of inlet pipe. Please
note it must be installed over the thread. Tighten it with clipper joint.
On the other end of the rubber pipe, a filter should be attached.
OPERATION
IMPORTANT:
• Before starting, remove self-suction plug and pour water in the
pump until water overflows. When filled, tighten the plug firmly.
• Fully tighten self-suction plug, suction hose and others
connections. If they are loose, air will enter into your pump,
which may hinder the pump’s operation.
STARTING:
• Press the primer pump repeatedly until there are no air bubbles
visible in the fuel discharge line. Then move the throttle lever to
the starting position.
NOTE: This is not necessary if the engine is warm.
• If the engine is cold, move the choke lever to the closed position
, pull the recoil starter until
the engine sounds like it wants to run. Then move the choke lever to the open position
, pull
the recoil starter until the engine starts
NOTE: This is not necessary if the engine is warm.
• After the engine has started, move the choke lever to the open
position. Allow the engine to warm up 2–3 minutes before using.
• Move the throttle lever to the fastest position and begin to work.
• When the pump is used in winter, screw off the drain cock under
the pump and draw off water thoroughly after stopping the
machine. This prevents the pump from being damaged by frozen
water.
• If the gap between impeller and the surface of flow guidance is
over 1/32 inch (1mm), it can continue to be used after adding an
adjustment shim on the shaft shoulder.
• When changing self-priming pump’s machinery seal, be sure to
apply adhesive between the seal and pump cover. Otherwise, a
heavy hit may break the seal during operation.
When changing machinery seal, install silent ring set in the pump
cover, install movable ring set in the engine output shaft. Be careful
not to force the ring set when installing to prevent breaking the grind
piece.
The fuel of the pump is a fuel/oil mixture (50:1 ratio).
Keep fire and other explosives and inflammables away from the pump. Operate the
pump on a level surface to prevent fuel from spilling.
Do not add fuel into fuel tank or crank case when the machine is running.
Exhaust gas contains poisonous carbon monoxide. Never use the machine without proper
ventilation, otherwise people and animals would be affected.
Do not touch muffler and muffler cover while the machine is running or had just been
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turned off. The muffler area will be very hot. Allow to cool before servicing, if needed.
Run new or newly maintained machine at low speed with low load during the first 20 hours. Do not
run it at high speed with full load.
MAINTENANCE
WARNING: Make sure this tool is disconnected from its power source before attempting
any maintenance, cleaning, or inspection.
• Maintain your water pump. It is recommended that the general condition of any tool be
examined before it is used. Keep your tools in good repair by adopting a program of
conscientious repair and maintenance in accordance with the recommended procedures found in
this manual. If any abnormal vibrations or noise occurs, turn the tool off immediately and have
the problem corrected before further use. Have necessary repairs made by qualified service
personnel.
• Cleaning. Use only soap and a damp cloth to clean your water pump. Many household cleaners
are harmful to plastics and other insulation.
TROUBLESHOOTING MALFUNCTIONS AND REMEDIES
Malfunction
Cause
Remedy
Water is not enough. Refill water into the pump.
Check inlet pipe and connector of pipe, change the pipe or tighten
the screw.
Inlet pipe leakage.
Speed of pump is
too low.
The filter net is
obstructed.
Check speed and find cause for remedy.
Check and clean up.
It is over the
capacity of pump.
The seal was
damaged and air
leaked.
The filter net,
pipeline or impeller
is choked.
Check the position of installation.
Change the machinery seal set.
Clean the obstruction.
Speed is low.
Increase speed.
Impeller’s seal is
worn.
Adjust the gap or change impeller and machinery seal.
Check inlet pipe and connector of pipe, change the pipe or screw
down the bolt.
Inlet pipe leaking.
Malfunction
Cause
Remedy
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Impeller is damaged
and leaking
Replace with a new impeller.
Total head is too
high.
Check the reason, adjust it.
There is air in the
pump or inlet, air
leak into the seal.
Screw off air drain screw cock, and eliminate the air. Check the
pipeline or change machinery seal.
Speed of engine is
not stable.
Adjust the speed of engine.
There is contact
between impeller
and flow guidance.
Listen to the sound carefully; if the impeller is making contact
with the case, then adjust.
The impeller is
obstructed by weeds
or other debris.
Check and clean up.
Malfunction
Cause
Remedy
The connector of
inlet pipe is loose or Check inlet pipeline and remedy.
leakage.
Suction head is too
high and causing
cavitations.
Check suction head and lower the position of pump.
Suction head is too
high and causing
cavitations.
Check suction head and lower the position of pump.
Decrease the output of water.
Output of water is
too large.
Inlet pipe is
obstructed by
foreign body so the
resistance is too
large.
Check inlet pipe and filter net and clean up.
Listen carefully and inspect the part which causes the noise. Stop
the machine to adjust.
Rotary part is loose.
Installing for pump
unit is not stable.
Stop the machine to check and adjust.
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Malfunction
Cause
Remedy
There is air in the
pump or pipeline.
Screw off air drain screw cock and expel the air.
Impeller damaged.
Stop the machine to check and replace with a new impeller.
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DIAGRAM & PARTS LIST
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Part#
Description
Bolt assembly M5x20
Housing
Qty.
Part#
39
Description
Clip, pipe
Pipe
Qty.
1
2
3
4
5
6
3
1
1
1
1
4
1
1
1
1
1
1
40
Space, housing
Spark plug RCJ6Y
Baffle of cylinder
Bolt M5x20
41
Clip, pipe
Pipe
42
43
Choke
44
Base, cleaner
Primer pump
assembly
7
8
9
Cylinder
Gasket, cylinder
Ring, piston
1
1
2
45
46
47
1
1
2
Air filter element
Bolt assembly
M5x60
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Piston
Pin, piston 9x31
Ring, snap
1
1
1
1
1
1
2
1
1
1
1
1
1
4
1
1
1
8
1
1
1
1
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
Cover, cleaner
Knob, cover
Pipe
1
1
1
1
1
1
1
1
1
1
1
1
1
3
2
1
1
1
2
2
2
1
Needle bearing
Bolt assembly M5x12
Crank shaft assembly
Bearing 6001/P53
Gasket, crankcase
Pin
Clip, pipe
Fuel filter comp
Cap, fuel tank
Valve, fuel cap
Holder, valve
Holder, stopper
Gasket, fuel cap
Stopper
Rear crankcase
Oil seal 12x22x7
Starter pulley comp
Starter comp
Fuel tank
Bracket of pump
Washer 5
Bolt assembly M5x16
Woodruff key
Pin 3x10
Front crankcase
Retaining ring 28
Bolt M5x25
muffler Gasket
Muffler assembly
Heat shield
Oil seal 12x28x7
Fan cover
Bolt M5x55
Washer 4
Rotor
Space, ignition coil
Ignition coil comp
Connect shaft
Bolt assembly
M4x20
32
Chock handle
1
70
2
33
34
35
Gasket, insulator
Insulator
1
1
3
71
72
73
Washer 5
Washer 5
12
12
1
Bolt assembly M5x20
Bolt ST3X12
Bolt assembly
M5x12
36
Gasket, carburetor
1
74
75
1
1
37
38
Carburetor comp
1
1
Stop button comp
Gasket, carburetor
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Part#
2-1
2-2
2-3
2-4
2-5
2-6
2-7
2-8
Description
1" Pump Housing
Washer Ф6.5
Screw M6 × 16
Gasket
Qty.
1
Part#
2-22
2-23
2-24
2-25
2-26
2-27
2-28
2-29
Description
Throttle Lever
Washer Ф5
Washer Ф5
Nut M5
Qty.
1
4
1
13
1
1
1
Mechanical Seal
Impeller
1
Handle
1
1
Nut M6
6
Volute Casting
Volute Casting O-ring
1
Bracket Pump
1
1
Rubber Pillar
1
Anti Vibration
rubber
2-9
Pump Cover
1
2-30
4
2-10
2-11
2-12
2-13
2-14
2-15
2-16
2-17
2-18
2-19
2-20
2-21
Screw M6 × 65
Screw M6 × 55
4
2
2
2
1
1
2
2
2
1
1
1
2-31
2-32
2-33
2-34
2-35
2-36
2-37
2-38
Screw M5 ×12
Washer Ф5
Base
4
4
Priming Cap O-ring
Priming Cap
1
2
Washer Ф8
Washer Ф8
Nut M8
Return Valve Gasket
Inlet Valve
2
2
Filter Assembly
Clamp
Gasket, Inlet/Outlet
Pipe Connector
Connector Nut
1 set
3
Discharge Flange O-ring
Discharge Flange
Cable Comp
For replacement parts and technical questions, please call 1-800-222-5381.
WARRANTY
One-Year Limited Warranty
Distributed by
Northern Tool + Equipment Co.,
2800 Southcross Drive West
P.O. Box 1499 Burnsville, MN 55337-0499
Made in China
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