LIFAN Power USA LF2WP Operating instructions

Operating Instructions
and Owner’s Manual
LF2WP, LF2WP-CA, LF3WP, LF3WP-CA, LF4WP, LF4WP-CA
PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATING YOUR NEW
LIFAN Power USA Water Pump
(-CA) Indicates this unit is CARB Certified for California

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
2
PLEASE READ THE
FOLLOWING INSTRUCTIONS!
1. Unit Shipped with “NO OIL” in Engine or where applicable pumps and/or
accessories. Check and fill with proper oil as outlined in the Owner’s Manual for
the respective product.
2. For repair under Warranty or questions concerning Warranty, DO NOT return
this product to the Store where purchased. Follow the procedures as outlined in
the “WARRANTY POLICY” and “WARRANTY REGISTRATION” in the Owner’s
Manual. For any questions visit www.lifanpowerusa.com or call 1-866-471-
7464.
3. Read the “Owner’s Manual” prior to operating any equipment and familiarize
yourself with the proper and safe operation of the equipment. If you have any
questions, visit www.lifanpowerusa.com or call 1-866-471-7464.
This Owner’s Manual is for the Following Models:
LF2WP
LF3WP
LF4WP
LF2WP-CA
LF3WP-CA
LF4WP-CA
(LF) indicates this unit is a LIFAN product.
(WP) indicates this unit is a Water Pump
(-CA) indicates this unit is CARB Certified for California

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
3
TABLE OF CONTENTS
Preface 4
Product Specifications 5
Safety Instructions 6
Controls and Features 9
PRE-OPERATING INSTRUCTIONS 10
Connecting Water Inlet Hose 10
Connecting Water Outlet Hose 11
Engine Oil Level Check 12
Engine Fuel Level Check 13
Air Cleaner Element Check 14
Pump Water Capacity Check 15
Operation of Water Pump 16
Transporting and Storing the Unit 19
Maintenance 21
Troubleshooting 25
Water Pump Safety 26
Limited Warranty Policy 27

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
4
Preface
Thank you for choosing LIFAN Power USA for your Power Equipment Needs. LIFAN
Power USA prides itself on providing quality products at affordable pricing, creating the
“Best Equipment Value on Today’s Market!”
All LIFAN Power USA products are manufactured utilizing the latest technology. Built
with quality components, your new Power Equipment Product will give you years of
dependable service. Your unit, along with all of LIFAN Power USA products are
designed, engineered, and manufactured with LIFAN’s Industrial Grade Gasoline Engine.
This Owner’s Manual will provide you with all of your needed information for your new
Power Equipment Product, including Safe Operation and Maintenance of your unit.
Please read this Owner’s Manual completely and carefully prior to operation. Keep this
Owner’s Manual for assistance in the future, such as proper maintenance schedules and
tips to prolong the life and effective use of your unit. If you require assistance, please
visit our website (www.lifanpowerusa.com) or call toll free 866-471-7464.
This Owner’s Manual contains information with respect to the newest products at the
time of publication. Due to revision and modifications, the information noted in the
Owner’s Manual might vary from the actual status. This Owner’s Manual is subject to
change without notice. The copyright of the Owner’s Manual belongs to EquipSource,
LLC. Any group or individual is forbidden to reprint or copy any of this Owner’s Manual
without the written consent of EquipSource, LLC.
FOR ALL WARRANTY AND SERVICE RELATED ISSUES/QUESTIONS DO NOT RETURN
YOUR UNIT TO THE STORE OR DEALER WHERE THE ITEM WAS PURCHASED. FOR
SERVICE VISIT LIFAN POWER USA’S WEBSITE (WWW.LIFANPOWERUSA.COM) OR CALL
1-866-471-7464. WE WILL BE HAPPY TO HANDLE YOUR WARRANTY ISSUE OR DIRECT
YOU TO THE NEAREST “AUTHORIZED SERVICE CENTER.”

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
5
Product Specifications
Pro Series Water Pumps
Model
LF2WP (-CA)
LF3WP (-CA)
LF4WP (-CA)
Suction/Discharge Diameter
2in (50mm)
3in (80mm)
4in (102mm)
Rotation Velocity
3600rpm
3600rpm
3600rpm
Delivery
9500gph (35961.41 L/hrs)
14260gph (64827.27L/hrs)
22983gph (104.482.8L/hrs)
Suction Lift
19.68ft (6m)
19.68ft (6m)
14.76ft (4.5m)
Maximum Pump Head
85.3ft (26m)
98.42ft (30m)
78.74ft (24m)
ENGINE
Manufacturer
LIFAN
LIFAN
LIFAN
Model
LF168F-2
LF168F-2
LF177F
Type
4-Stroke OHV Single
Cylinder
4-Stroke OHV Single
Cylinder
4-Stroke OHV Single
Cylinder
Maximum Horsepower
(MHPa)
6.5MHP
6.5MHP
9MHP
Displacement
196cm3
196cm3
270cm3
Starting System
Recoil
Recoil
Recoil
Fuel Tank Capacity
0.79 Gallons (3.6L)
0.79 Gallons (3.6L)
1.3 Gallons (6L)
Run Time
2.5 hrs
2 hrs
2 hrs
Fuel Type
Gasoline
Gasoline
Gasoline
Oil Amount
20.28oz (0.6L)
20.28oz (0.6L)
37.2oz (1.1L)
Low Oil Shutoff Protection
Yes
Yes
Yes
CARB Certified
(-CA) Models Only
(-CA) Models Only
(-CA) Models Only
Dimensions
Length
18.5in (470mm)
19.7in (500mm)
29in (735mm)
Width
14.5in (370mm)
15.5 (370mm)
20in (505mm)
Height
14.9in (380mm)
17.7in (450mm)
24in (610mm)
Dry Weight
44lbs (20kg)
66lbs (30kg)
112.4lbs (51kg)
Comments
MHPa= Maximum Horsepower
L/hrs = Liters per hour

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
6
Safety Instructions
For your safety read this manual carefully. Become familiar with the proper operation,
care, and maintenance of your LIFAN Power USA water pump.
The safety and alert symbol ( ) is used with a signal word (CAUTION, DANGER, WARNING), a pictorial and/or
safety message to alert you to hazards. CAUTION indicates a hazard that, if not avoided, could result in minor or moderate
injury. DANGER indicates a hazard that, if not avoided, could result in death or serious injury. WARNING indicates a
hazard that, if not avoided, could result in death or serious injury.
Hazard Symbols and Meanings
WARNING!
Running water pump emits carbon monoxide: an odorless, colorless, poison gas.
Breathing carbon monoxide can cause nausea or death!
ONLY operate water pump outdoors.
Exhaust gas must be prevented from entering confined areas.
Direct exhaust gas away from windows, doors, ventilation and other openings.
Do not operate water pump inside or under any buildings.
WARNING!
The engine exhaust from this water pump contains chemicals known to the state of California to cause birth
defects, reproductive harm, and cancer.
This is the safety alert symbol. It is used to alert you to potential personal injury
hazards. Obey all safety messages that follow this symbol to avoid possible injury
or death.
Explosion Fire Electrical Shock
Toxic Fumes Hot surface or gas Kickback

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
7
Safety Instructions (continued)
WARNING!
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
WHEN ADDING OR DRAINING FUEL
Turn water pump off and let it cool for at least three minutes before removing fuel cap. Loosen cap slowly in order to
relieve pressure in the fuel tank.
Fill or drain fuel tank outdoors. Do not excessively inhale fuel vapors.
Keep away from open flames or sparks and other sources of ignition.
Do NOT smoke while filling fuel tank.
Do NOT overfill tank. Allow space for fuel expansion.
WHEN TRANSPORTING OR REPAIRING EQUIPMENT
Transport water pump with the fuel valve in the off position.
Repair water pump with the fuel tank empty or the fuel valve in the off position.
Disconnect spark plug wire before transport or service.
WHEN STORING FUEL OR EQUIPMENT CONTAINING FUEL
Store away from furnaces, stoves, water heaters, clothes dryers or other appliances that have pilot light or other
ignition source because they can ignite fuel vapors.
WHEN STARTING EQUIPMENT
Ensure spark plug, muffler, air cleaner, and fuel cap are in place.
Do NOT crank engine with spark plug removed.
If fuels spills, wait until it evaporates before starting engine.
WHEN OPERATING EQUIPMENT
Do not choke carburetor to stop engine.
Do not tip engine or equipment at an angle, which causes fuel to spill.
WARNING!
Rapid recoil of starter cord (kickback) may pull hand and arm forward
toward engine at a rapid rate.
Broken bones, bruises, sprains, and fractures may result.
When starting engine, pull cord slowly until tension is felt, then pull rapidly to avoid
kickback.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
8
Safety Instructions (continued)
WARNING!
While engine is running temperature may exceed 150°F (65°C).
Server burns may occur.
Exhaust heat/gasses can ignite combustibles, structures or damage fuel tank causing a
fire.
Do NOT touch hot surfaces and do avoid exhaust gasses.
Allow water pump to cool before touching.
Keep at least 6 ft. (183cm) clearance on all sides of water pump including overhead clear.
Reflective exhaust heat may damage fuel tank causing fire.
Code of Federal Regulation(CFR) Title 36 Parks, Forests, and Public Property require equipment powered by an internal combustion
engine to have a spark arrester, maintained in working order, complying to USDA Forest service standard 5100-1c or later revision.
In the state of California a spark arrester is required under section 4442 of the California Public resources code.
WARNING!
Unintentional sparking can result in fire or electrical
shock.
WHEN TESTING FOR ENGINE SPARK
Do NOT check for spark with the spark plug removed.
Use approved spark plug tester.
WHEN REPAIRING OR ADJUSTING WATER PUMP
Disconnect the spark plug wire from the spark plug and place the wire where it cannot contact spark plug.
CAUTION!
Improper use and care of this water pump will cause damage and shorten its lifespan. Failure to follow these actions will void
all warranties.
Use water pump only for appropriate and designated purposes.
The dealer or customer helpline (1-866-471-7464) can instruct you on intended uses.
Water pump must be placed on a level surface.
Do NOT expose water pump to extreme conditions. Excessive dust, moisture, and corrosive vapors will damage unit.
Cooling slots must be kept clear of debris.
Shut off water pump and take to a qualified service center if the water pump fails to operate properly.
NOTE: Pumping of inflammable or corrosive liquids, such as gasoline, seawater,
chemical solutions, alkaline liquids, or acids, is forbidden with this unit!

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
9
Controls and Features
Legend
1. Throttle Valve Lever –Controls Engine Speed
2. Choke Lever –
LF4WP Model: Before starting cold water pump, pull the choke pin outward
from water pump to activate the choke lever. After allowing water pump to
run for a few seconds, push pin inward toward water pump.
LF2WP & LF3WP Models: Before starting cold water pump, rotate the
choke lever to the left until resistance is felt. After starting the water pump,
rotate the choke lever to the right to disengage.
3. Fuel Cock –Turn to “OFF” position to terminate fuel delivery to engine.
4. Recoil Starting Handle –Pull Handle to rotate engine for starting.
5. Frame –1inch round steel tubing for maximum protection.
6. Engine Switch –Rocker Style: Set to “ON” position to start engine & “OFF”
position to shut engine off.
7. Dipstick –Check/Fill Engine Oil.
8. Intake Pipe –Pump Suction intake.
9. Outlet Pump –Pump Discharge pipe.
10. Muffler –Allows quiet operation.
11. Spark Plug –Engine Spark Plug location; Check Maintenance Schedule for
Service Intervals; Disengage during transportation and storage; NEVER start
engine with Spark Plug disengaged.
12. Air Cleaner –Check Maintenance Schedule for Service Intervals.
13. Fuel Filler Cap –Vented Fuel Cap must be properly installed at all times
during operation.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
10
Pre-Operating Instructions: Connecting Water Inlet
Hose
Use commercially available hose, hose joint, and clamp. The water inlet hose must
be of continuous structure and be non-folded. The length of the hose should be no
more than required. The effect of suction is greatest at shorter distances from the
water surface. Suction time varies with the length of the water inlet hose. The filter
matching with the water pump should be mounted to the end of the water inlet hose
with a hose clamp.
CAUTION:
Before pumping, install the filter securely to the end of the water inlet
hose. This filter will filtrate any impurity, which may produce a passage
jam and damage impellers.
Be sure to install the hose joint and clamp properly to prevent air leaks
and pumping performance drop; a loose water inlet hose will decrease
the water pump performance and self-suction ability.
Inlet

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
11
Pre-Operating Instructions: Connecting Water
Outlet Hose
Use commercially available hose, hose joint, and clamp. A short hose with a big
diameter will provide the best performance. A long hose with a small diameter will
increase flowing resistance and decrease the power output of the water pump.
NOTE: Tighten the hose clamp to keep from disengaging during operation under
high pressure.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
12
Pre-Operating Instructions: Engine Oil Level Check
CAUTION:
Running engine with insufficient engine oil can cause severe damage to the
engine.
The engine performance and service life is directly dependent of the quality
of the engine oil. Do NOT use filthy engine oil or vegetable oil.
Check engine oil level only with engine stalled and with unit on level ground.
oUse 4-Stroke Gasoline Engine Oil equivalent in quality with SF, SG
from API.
Oil velocity varies with average environmental temperature. Select engine oil with
proper velocity using the chart below in accordance with you regional
environmental temperature.
Engine Oil Alarm System
The engine oil alarm system aides in avoiding engine damage due improper
amounts of engine oil in the crankcase. Before the engine oil level in the crankcase
drops below the safety line, the engine oil alarm system will automatically stall the
engine (while the engine switch remains in the “ON” position).
If the engine stops and will not restart:
1. Remove the engine oil dipstick and wipe it
clean.
2. Insert the dipstick into engine oil filler hole
without screwing it in
3. Remove dipstick and check engine oil
amount.
4. If engine oil is below required amount, fill
specified engine oil up to the top of filler hole.
Use engine oil depended on environmental temperature. Refer to Product
Specification section for proper engine oil capacity.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
13
Pre-Operating Instructions: Engine Fuel Level
Check
CAUTION:
Gasoline is extremely flammable. Keep away from ignition sources.
Fuel unit only in well-ventilated areas with the engine stalled.
Do NOT smoke near unit.
Do NOT spill fuel out of the fuel tank. Spilled gasoline and gasoline
vapor may ignite. If gasoline is spilled, wipe completely dry before
starting the engine.
Avoid repeated or sustained breathing of gasoline.
Avoid skin contact with gasoline.
Keep our of reach of children and pets.
Do NOT use contaminated gasoline. Keep dirt, dust, and water our of
fuel tank.
After fueling is complete, ensure fuel filler cap is securely fastened.
To Check Engine Fuel Level:
1. Remove fuel filler cap.
2. Visually check fuel level within gas tank.
3. If too low, add fuel. Only use specified gasoline; Unleaded Gasoline is
recommended. Refer to Product Specification section for fuel tank capacity.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
14
Pre-Operating Instructions: Air Cleaner Element
Check
CAUTION:
Do NOT run the engine without air cleaner element installed.
Operation of engine without air cleaner element installed will result in
the inhalation of dirt, dust, and other debris into the engine and
through the carburetor. This will result in premature wear of the
engine.
To Check Air Cleaner Element:
1. Remove the clip (item 9 in “Air Cleaner A” below) or the wing nut (item 7 in “Air
Cleaner B” below) to remove and check the air filter element.
2. For Sponge Type Air Filters, wash with soap and water when contaminated.
Squeeze excess liquid from air filter element, and allow the air filter element to
dry.
For Paper Type Air Filters, replace with the correct Air Filter for your unit. They
are available at your dealer or from LIFAN Power USA. Order your filter by
calling toll free 866-471-7464.
3. Re-Install the air filter element into the air filter housing.
Air Cleaner A Air Cleaner B

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
15
Pre-Operating Instructions: Pump Water Capacity
Check
CAUTION:
Do NOT run engine without water inside the pump. Operation of engine
without water inside the pump will cause the pump to overheat.
Prolonged operation of engine without water inside the pump will
damage the pump gasket and impeller.
If water within the pump is not full, shut off the engine at once and fill
the pump after allowing the unit to cool.
To Check Pump Water:
1. Remove Water Filler Cap.
2. Visually Check for Water inside pump.
3. If too low, add water through Water Filler Hole.
4. Securely re-fasten Water Filler Cap.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
16
Operation of Water Pump
Water Pump Use Location:
WARNING!
Running water pump gives off carbon monoxide gas. It is odorless, colorless, and highly
toxic.
Breathing carbon monoxide gas can leads to fainting, nausea or may result in death.
Only operate water pump outdoors.
Prevent exhaust gas from entering, through windows doors or ventilation intakes, any confined areas.
DO NOT operate water pump inside any enclosed or roofed areas.
Before Operating Water Pump: Refer to Pre-Operating Instruction section for
additional procedures and definitions.
1. Check water pump condition.
a. Inspect for signs of damage, oil or fuel leaks.
b. Remove excessive dirt and/or debris from the unit.
2. Check Suction and Discharge Hoses.
a. Inspect general condition of hoses to ensure hoses are in serviceable
condition.
i. Suction Hose must be reinforced construction to prevent hose
collapse.
b. Ensure sealing washer in suction hose connecter is in operable
condition.
c. Ensure hose connectors and clamps are securely installed.
d. Ensure filter is in operable condition and securely installed on suction
hose.
3. Check the Engine.
a. Ensure proper engine oil amount.
b. Ensure air cleaner element is clean and installed.
c. Ensure proper fuel level amount.
4. Ensure water pump is on a level surface.
5. Ensure engine switch is in the “OFF” position.
6. Ensure water pump is at least 3ft (1m) away from building walls and other
equipment during operation. Do NOT place flammable objects close to water
pump.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
17
1. Operation of Water Pump (continued)
Starting the Engine: Refer to the Controls and Features section for additional
diagrams and definitions.
1. Prime the pump.
2. Move the fuel cock to the “ON” position.
3. To start a cold engine, refer to instruction in the Controls and Features
section –2. Choke lever.
To restart a warm engine, leave the choke level in the “OPEN” position.
4. Move the throttle valve lever away from the “LOWER” position, about 1/3 of
the way toward the “UPPER” position.
5. Turn the engine switch to the “ON” position.
6. Pull the recoil starting handle lightly until resistance is felt, then pull briskly.
Do NOT allow the starter handle to snap back against the engine. Return it
gently to prevent damage to the starter.
Setting the Engine Speed
1. After starting the engine, move the throttle valve lever to the “UPPER”
position for self-priming, then check the pump output.
2. To adjust the pump output (which is controlled by the engine speed), move
the throttle valve lever as needed to attain desired pump output. Moving the
throttle valve in the “UPPER” direction will increase the pump output and
moving the throttle vale in the “LOWER” direction will decrease pump
output.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
18
Operation of Water Pump (continued)
Stopping the engine: Refer to the Controls and Features section for additional
diagrams and definitions.
IN EMERGENCY:
1. Turn the engine switch to the “OFF” position.
NORMAL PROCEDURE:
1. Move the throttle valve lever to the “LOWER” position.
2. Turn the engine switch to the “OFF” position.
3. Turn the fuel cock to the “OFF” position.
4. Remove the water drain plug and drain the pump chamber.
5. Remove the water filler cap and flush the pump chamber with
fresh, clean water.
6. Allow water to completely drain from the pump chamber.
7. Reinstall the water drain plug.
8. Reinstall the water filler cap.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
19
Transporting and Storing the Unit
CAUTION:
To avoid fire, allow water pump to cool down for at least twenty (20)
minutes before transporting or storing the unit.
Always transport and store the unit with the fuel cock in the “OFF”
position.
Always keep unit in horizontal position to the ground to prevent fuel
from spilling. Spilled gasoline and gasoline vapor may ignite.
Gasoline is extremely flammable and explosive.
Storing the Water Pump: Refer to the Controls and Features section for additional
diagrams and definitions.
1. Ensure the storage site for the unit is clean and dry.
2. Clean the inside of the water pump.
a. If the water pump was used to pump water with mud, sand, or other
heavy debris:
i. Operate water pump to suck in fresh, clean water to wash
inside of unit. Failure to do so may result in damage to
impeller.
ii. After washing, remove water drain plug and empty the water
in the water pump completely.
iii. Reinstall the water drain plug.
Before long term storage of your power equipment product, typically 30
days or more, perform the following:
3. Set the fuel cock (valve) to the “OFF” position.
4. Let the unit continue to run until it stops itself, burning all of the fuel in the fuel
system.
5. Turn the ignition switch to the “OFF” position.
6. Drain the engine oil in accordance with the “Oil Change Procedures” in this
Owner’s Manual’s Maintenance section. Do NOT re-fill with oil until ready to use
again.
7. Remove the Spark Plug in accordance with the “Spark Plug Maintenance” in the
Owner’s Manual’s Maintenance section. Spray a lubricant, such as WD40®, into
the Spark Plug hole to lubricate the top of the piston and walls of the cylinder.
Replace the Spark Plug.
8. Pull starter rope until resistance is felt. This will place the valves in the closed
position.

LIFAN Power USA
2205 Industrial Park Road
Van Buren, AR 72956
866-471-7464
www.lifanpowerusa.com
20
Transporting and Storing the Unit (continued)
9. Add the recommended amount of fuel stabilizer, in accordance with the amount
recommended by the manufacturer of the fuel stabilizer, to the unused gasoline
left in the unit’s tank.
10. Place the unit in a clean, dry, and secure location.
11. Cover the unit to protect from dust.