LONCIN LC50ZB60-4.9C User manual

Thank you for purchasing a water pump.
Please reliably keep this Manual for your reference at any time.
This owner's manual is considered a permanent part of the engine and should remain with the
engine if resold.
No part of this publication may be reproduced, transmitted, distributed or stored without prior
written permission.
This manual covers the operation and maintenance of water pump.
LC80ZB30-4.9C LC50ZB60-4.9C
The illustration in this manual bases on: LC80ZB30-4.9C, the illustration may vary according to
type.
If problem should arise, or if you have any question about the pump, consult you authorized
dealer.

Contents
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Contents
1.SAFETY INFORMATION............................................................................................1
2.COMPONENT IDENTIFICATION...............................................................................3
3. BEFORE OPERATION CHECK................................................................................5
4. USE OF DIESEL ENGINE..................................................................................……6
5. OPERATION……………...……………………………...……………..…………….......10
6．MAINTENANCE.......................................................................................................15
7. CHARACTERISTIC CURVE OF DIESEL ENGIN....................................................20
8. TROUBLESHOOTING OF DIESEL ENGINE..........................................................21
9．STORAGE................................................................................................................22
10. TROUBLESHOOTING...........................................................................................23
11. SPECIFICATIONS.............. ...................................................................................25

SAFETY INFORMATION
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1. SAFETY INFORMATION
Safety of your and other people’s health and property is of great importance to us, so
please use water pump safely.
water pump is designed to give safe and dependable service if operated according to
instruction.
Read the three types of important safety message in the warning labels, marks and this
owner’s manual carefully. Each safety message is preceded by a safety alert symbol
and one of three words: WARNING, CAUTION, or NOTICE.
Indicates a strong possibility that very serious injury could result
if instructions are not followed.
Indicates a strong possibility that minor injury could result if
instructions are not followed.
Indicates that your generating set or other property may be
damaged if instructions are not followed.
Read and understand the Owner Manual before operating the water pump.
Failure to do so will result in personal injury or equipment damage.
SAFETY PRECAUTIONS
●For safety, never pump flammable and corrosive liquids such as gasoline and acid.
Also, to avoid pump corrosion, never pump sea water, chemical solution, or caustic
liquid such as used oil.
●To pervert fire hazards and to provide adequate ventilation, keep the pump at least 1
meter away from building wall and other equipment during operation. Do not place
flammable objects close to the pump.
●The muffler becomes very hot during operation and remains hot for a while after
stopping the engine. Be carefully not touching the muffler while it is hot. Let the engine
Cool before storing water pump indoors.
●Gasoline is extremely flammable and is explosive under certain condition. Do not
smoke or allow flames or sparks in the refueling area or where gasoline is stored.
●Place the pump on a firm, level surface. If the pump is tilted or overturned, fuel
spillage may result.
●Refuel in a well- ventilated area with the engine stopped. Do not overfill the tank, if
any fuel is spilled, make sure the tank is dry before starting. After refueling, make sure
the tank cap is closed properly and securely.
●Never run the engine in an enclosed or confined area. Exhaust gas contains
poisonous carbon monoxide gas; exposure can cause loss of consciousness and may
lead to death.
●Children and pets must be kept away from the area of operation due to possibility of
burns from the hot engine components.

COMPONENT IDENTIFICATION
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2. COMPONENT IDENTIFICATION
DISCHARGE PORT
FRAME
PRIMING WATER FILLER CAP LC178F ENGINE
FRAME
ABSORBER BRACKET
RUBBER BOTTOM
PUMP DRAIN
PLUG BRACKET
SUPPORT PLATE
SUCTION PORT

COMPONENT IDENTIFICATION
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MUFFLER
OIL DRAIN
PLUG
OIL FILLER CAP
FUEL TANK
CARBURATOR
AIR CLEANER
STARTER GRIP
OIL DIPSTIC
THROTTL
E LEVER
FUEL PUMP
STOP/FUEL
SWITCH
LIFTING LUG

BEFORE OPERATION CHECK
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3. BEFORE OPERATION CHECK
LC80ZB30-4.9C /LC50ZB60-4.9C are designed for pumping clean water.
For your safety and maximizing the service life of your equipment, it is very important to
take a few moments before your operation engine to check condition. Be sure take any
problem you find, or have your servicing dealer correct it before your operation engine.
●Improperly maintaining this engine, or failure to take this
problem before operation, can cause a malfunction which you
can be seriously hurt or killed.
●Always perform a preparation inspection before each
operation, and correct any problems.
Exhaust gas contains poisonous carbon monoxide gas, never run the engine in an
enclosed or confined area.
To pervert fire hazards and to provide adequate ventilation, keep the pump at least 1
meter away from building wall and other equipment during operation. Do not place
flammable objects close to the pump.
Before preparing your operation check, be sure the engine is level and the engine
switch is in the OFF position.
Check The General Condition Of The Engine
●Look around and underneath the engine for signs of oil or gasoline leaks.
●Remove any excessive dirt or debris, especially around the muffler and recoil starter.
●Look for signs of damage.
●Check that all shield and covers are in place, and all nuts, bolts and screws are
tighten.
Check The Suction Hose And The Discharge Hose
The hose must be reinforced, noncollapsible, tighten the hose securely to prevent the
hose from disconnecting under high pressure.
●Check the seal tightness.
●Check hose, hose connecter and hose bands and be sure their connecting situation.
●Check strainer and be sure to be installed on the hose correctly.

USE OF DIESEL ENGINE
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4. USE OF DIESEL ENGINE
(1) Engine Starting preparation
1) Check the General Condition of the Engine
zLook around and underneath the engine for sign of oil or fuel leaks.
zLook sigs of damage.
zCheck that all shields and covers are in place, and all nuts, bolts,and screws are
tightened.
2) Check Oil
Check the oil level after placing engine on a level place.
zRemove the oil filler cap and wipe it clean.
zInsert and remove the oil filler cap without screwing it into the oil filler neck. Check
the oil level shown on the dipstick.
zIf the oil level is too low or below the lower limit mark on the dipstick, fill with the
recommended oil to the upper limit.
zScrew the filler cap/dipstick securely.
FUEL FILLER UPPER
LOWER

USE OF DIESEL ENGINE
- 7 -
Recommended Engine Oil
Use engine oil that meets or exceeds the requirement of CC.
SAE 10W30、15W40
3) Check The Fuel
Remove the fuel tank cap and check the fuel level. Refill the tank if the fuel level is low.
Tighten the fuel tank cap after refilling (Please use fuel according to environment and
temperature).
Please not fill gasoline. If you fill gasoline, starting engine may
result in fire damage.
UPPER
AMBIENT TEMPERATURE

USE OF DIESEL ENGINE
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(2) Start Engine
1）Recoil Starter
①Move to the engine switch to the ON position.
②Pull the starter 2-3 times to make output shaft turning several times.
③Move to the control lever to the START position,
STARTER

USE OF DIESEL ENGINE
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④Pull the starter grip lightly until you feel resistance, then pull briskly in the direction
of the arrow as shown below.
Do not allow the starter grip to snap back against the engine.
Return it gentle to prevent damage the engine.
⑤Please restart engine according to ④if engine could not start.

OPERATIONS.
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5. OPERATIONS.
To enhance the consciousness of safety, you need a thorough understanding of the
operation of pump and had better master it through some practice.
Please read SAFETY INFORMATION (page 3) and BEFORE OPERATION CHECK (page
5) carefully if you never use pump before.
Never run the engine in an enclosed or confined area. Exhaust gas contains poisonous
carbon monoxide gas; exposure can cause loss of consciousness and may lead to
death.
For safety, never pump flammable and corrosive liquids such as gasoline and acid.
Also, to avoid pump corrosion, never pump sea water, chemical solution, or caustic
liquid such as used oil.
Place Water Pump
Suction hose should not longer than necessary, as pump performance is best when the
pump is not far from above the water level.
Self-pumping quantity is also proportional to self-pumping time and hose length.
Install suction hose
●By using hose connecter and hose bands, Install available suction hose on the
suction port and screw the hose bands tightly. The suction hose must be of reinforced,
noncollapsible construction.
●The diameter of suction hose must be larger than that of the suction port.
There are two types of diameter as below:
LC80ZB30-4.9C: 80mm;
LC50ZB60-4.9C: 50 mm；
●By using hose band, connect hose on the hose coupler. Be sure sealing washer
WATER LEVEL MARK
SELF-FEED HEAD
SUCTION HEAD
TOTAL HEAD

OPERATIONS.
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provided with pump should be in good condition in case of water leak and gas leak.
●Always install the strainer provided with pump on the end of the suction hose before
pumping. The strainer will exclude debris that can cause clogging and impeller damage
STRAINER
HOSE CLAMP
SUCTION HOSE
HOSE CLAMP RING
HOSE COUPLER
SEALINGSUCTION PORT
HOSE
CONNECT
HOSE CLAMP
SUCTION HOSE
HOSE CLAMP
HOSE CONNECTOR
(COMMERCIALLY
AVAILABLE)

OPERATIONS.
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Connect the discharge hose
●By using hose connecter and hose bands,
Install available discharge hose on the suction
port and screw the hose bands tightly.
The discharge hose must be of reinforced,
noncollapsible construction.
A short, large-diameter hose is most efficient, which can decrease fluid friction and
reduce pump output.
●Tighten the hose band securely to prevent the hose from disconnecting under high
pressure.
Add Water
Fill water for the pump before start engine, tap the priming water filler cap from output
and fill clean water. After filling water, screw cap tightly.
If you start engine without filling water, it will break mechanical
tightness (water pump tightness).please stop immediately, add
water after waiting engine is cool.
HOSE CONNECTERS
HOSE BANDS
DISCHAEGE HOSE
PRIMING WATER FILLER CAP

OPERATIONS.
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(3) Engine operate
1) Start the engine without load for 3 minutes, warm up the engine.
2) Set the throttle lever at the desired speed.
●The initial 20 hours breaking-in period for the engine in full load operation
should be avoided. In order to test the engine, a 50% load operation is
recommended. Then, please replace the oil inside the engine after a 20-hour
operation.
●Please stop running the engine to check fault causes including any of those
below conditions: irregular sound or vibration of engine, failing to operate
smoothly, abnormal exhaust gases such as constant blue, white or black
fumes.
zDon’t operate the engine when ambient temperature is above +40℃or
below -10℃.
zOperation of the engine at a high altitude may result in reduced
performance, overheating and serious engine damage.
zIf the engine is running, don’t touch the muffler because it will be very
hot.
zDon’t add fuel when engine operation.
(4) Stop the engine
1) Move the throttle lever to the MIN. Position before stopping the engine.
Operate the engine without load for 3 minutes.
2) Turn the throttle lever to the STOP position.

OPERATIONS.
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3) In electric starter type, turn the engine switch to the OFF position.
4) Turn the fuel valve to the OFF position.
5）Pull the starter grip until feel resistance
Don’t stop engine briskly, that will result in unusual high
temperature. Please reduce lode when engine stopped slowly.

Maintenance.
- 15 -
6. Maintenance
Periodic inspection and adjustment of the pump are essential if high level
performance. The required service intervals and the kind of maintenance to be
performed are described in below table.
Each
Use 20Hrs 100Hrs 200Hrs 500Hrs 1000Hrs
Check/Tight
Bolt and Nut
○
(2)
Check/refill
engine oil
○
(2)
Replace
engine oil ○1st ○2nd and afterward
Check oil filler
(replace if it
break)
○○
Check
oil leakage
○(2)
(3)
Clean/Replace
air cleaner
element(paper)
(1) ○Clean ○Replace
Check/Replace
Fuel filter ○
Check
Carburetor ▲
Check Fuel
Pump ▲
Check Fuel
Line ○
Adjust Valve
Clearance ▲1st
▲
Check Valve
Ring ▲
Change Piston
Ring ▲
Check Battery ○
(2)
ITEM

Maintenance
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Note:
(1) Service more frequently when used in dusty areas.
(▲)These signs should be serviced by your service dealer, unless You have the
proper tools and are mechanically proficient.
(2) There items should be check or revise before use.
(3) There items should be check or revise after use.
(1) Changing oil
Drain the oil while the engine is still warm to assure rapid and complete drain.
1) Place a suitable container below the engine, disassemble oil drain plug and sealing
washer, and tap oil filler cap.
2) After draining the engine oil, install the drain plug and sealing washer and screw
them tightly.
3) Place engine on a firm and level surface, refill the recommend oil to the specified
level.
4) Please dispose of used oil in a manner that is friendly with environment. Do not
throw it in the trash or pour it on the ground.
(2) Clean the air cleaner
Unscrew the wing nut, remove the air cleaner cover. Install back again after cleaning.
Replace if there is broken
OIL DRAIN PLUG/ GASKET
OIL FILTER

Maintenance
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(3) Clean and Replace Air Cleaner Element
A dirty air cleaner element can cause engine starting malfunction.
Rapid engine wear result from running the pump without the air
cleaner or element damage.
1) Paper air filter element
Remove the wing nut from the air cleaner cover, and remove the cover and air filter
element (Tap the filter element several times on a hard surface, or blow compressed air
through the filter element from the inside). Clean or replace dirty filter element.
Always replace damaged filter element.
AIR CLEANER
AIR FILTER ELEMENT
AIR
CLEANER

Maintenance
- 18 -
2) Oil bath air filter element
Please check diesel oil in the air cleaner case before operating engine.
When rock the air cleaner case, oil is not easy to flow, it’s necessary to wash element.
In general, engine can be used 50h successively after changing oil once. Be sure to
check engine daily after operation in bad condition. Filter elements only need wash
everyday.
①Waiting for more than 10min after stopping engine，remove the tube clip，and
remove the oil pan and air filter elements.
②Drain the stale oil from air cleaner case and wash it.
③Dip the filter elements in clean diesel oil to wash and rinse. Wash air cleaner cover if
it is dirty.
④Check the gasket if break.
⑤Fill the air cleaner case to the OIL LEVEL mark with the same oil that is
recommended for the engine.
⑥Reassemble the air filter element, air cleaner case and tube clip
AIR CLEANER COVER
TUBE CLIP
FINE AIR FILTER
ELEMENT
CORSE AIR FILTER
ELEMENT
GASKET
AIR CLEANER CASE
SCALE MARK