Zenoah Plumbing Product PE2500H User Manual

T1056-93510 (904)  
OPERATOR’S MANUAL  
WATER PUMP  
PE2500H  
• Before using our water pumps, please  
read this manual carefully to understand  
the proper use of your unit.  
WARNING  
• Keep this manual handy.  
 
SAFETY FIRST  
Instructions contained in warnings within this  
manual marked with a  
symbol concern  
critical points which must be taken into  
consideration to prevent possible serious  
bodily injury, and for this reason you are  
requested to read all such instructions  
carefully and follow them without fail.  
WARNINGS IN THE MANUAL  
WARNING  
This mark indicates instructions which must be  
followed in order to prevent accidents which could  
lead to serious bodily injury or death.  
IMPORTANT  
This mark indicates instructions which must be  
followed, or it leads to mechanical failure,  
breakdown, or damage.  
NOTE  
This mark indicates hints or directions useful in the  
use of the product.  
CONTENTS  
1. Symbols carved on the machine ……………4  
2. For safe operation ……………………………5  
3. Parts location …………………………………7  
4. Specifications …………………………………8  
5. Fuel ……………………………………………9  
6. Set up …………………………………………11  
7. Operation ……………………………………12  
8. Maintenance …………………………………15  
9. Storage ………………………………………18  
10. Troubleshooting guide ………………………19  
 
1. Symbols carved on the machine  
For safe operation and maintenance, symbols are  
carved in relief on the machine. According to these  
indications, please be careful not to take a mistake.  
(a) The port to refuel the "MIX GASOLINE"  
Position: FUEL TANK CAP  
(b) The direction to close the choke  
Position: AIR CLEANER COVER  
(c) The direction to open the choke  
Position: AIR CLEANER COVER  
4   
 
2. For safe operation  
• Before operating the machine, be sure to  
read through this manual carefully and  
follow proper operating instructions.  
• Never allow children or anyone unable to  
fully understand the instructions given in  
the manual to use the machine.  
NOTES FOR OPERATION  
• Before using the machine, read this manual  
carefully to understand it’s function and safety  
instructions for operation.  
• Do not apply this pump for other than fresh  
water or agricultural water.  
Those cannot be applied are:  
Drinking Water, Muddy Water, Sea Water,  
Flammable Fluids(Such as Kerosene, Diesel Oil,  
Gasoline, or Heavy Oil), Chemical Agents, Acid  
or Alkaline Fluids, etc.  
• Engine exhaust gas contain hazardous carbon  
monoxide(CO). Avoid operating this pump  
indoors, in green house, tunnel, etc. where  
ventilation is imperfect.  
• Do not place any flammable object such as  
straw, withered leaves, rubbish, oily wiping cloth,  
etc. around the pump in operation.  
• Engine of this machine runs on the mixed fuel  
that contain highly flammable gasoline. Never  
refuel nor store the fuel where there is an  
incinerator, burner, open fire, stove, electric  
spark, welding arc spatter, etc.  
• Never smoke while refueling. It is absolutely  
hazardous.  
• Prior to refueling, be sure to stop the engine and  
confirm that there is no fire around.  
• Spilled fuel shall be completely wiped away with  
cloths, etc. before restarting the engine.  
• Securely tighten both fuel caps for the fuel tank  
and the fuel container after refueling.  
• Do not transport the pump for a long time on  
rough roads with fuel in the tank. Fuel cap may  
become loose with vibration and cause fuel  
leakage.  
• Keep children and pets away from where  
starting or operating the engine.  
5   
 
2. For safe operation  
• Do not touch the spark plug or the plug wire  
while the engine is in operation. They may cause  
an electric shock.  
• Do not touch metallic parts such as the muffler,  
spark plug, etc. with bare hands during the  
operation of engine or immediately after a stop.  
They may be very hot and cause burns.  
• Apply isolation measures to keep children or  
infants away from the pump so that you can  
operate it in safe area.  
• Temperature of the pumping up water shall be in  
between 5°C to 60°C. Otherwise, the pump may  
be damaged.  
• Avoid idle pump operation(operation with no  
water in the pump). This may cause pump  
damage.  
• Be sure to use only attached suction hose or an  
equivalent “water suction hose” as an water inlet  
hose.  
• Make sure to couplings and clumps(attached to  
this kit) when connecting the suction and  
discharge hoses to the pump.  
• The engine shall be stopped to transfer pump.  
NOTES FOR MAINTENANCE  
• In order to maintain your machine in proper  
condition, perform regular checking and  
maintenance described in this manual. In case  
you need a maintenance service or replacing of  
component not listed in this manual, consult with  
the shop of your purchase or nearby ZENOAH  
service dealers.  
• Be sure to stop the engine before any inspection  
or maintenance procedure.  
• Never disassemble nor modify your machine.  
This may cause damage of machine during  
operation and end up with serious accidents.  
• Always use ZENOAH genuine parts or ZENOAH  
specified parts for replacement.  
• Keep this manual handy so that you may refer  
back to it later whenever any doubt arises.  
• When you sell or lend this machine to others,  
never forget to attach this operator’s manual  
together.  
6   
 
3. Parts Location  
1. Air cleaner  
2. Throttle lever  
3. Spark plug  
4. Handle  
5. Self-suction plug  
6. Discharge port  
7. Suction port  
8. Hose coupling  
9. Clump  
10. Suction hose  
11. Strainer  
12. Clump  
13. Drain plug  
14. Base  
15. Fuel tank  
16. Engine stop button  
17. Fuel tank cap  
18. Starter knob  
19. Exhaust vent  
20. Engine cover  
7   
 
4. Specifications  
MODEL PE2500H  
Pump Type ················································································· Self suction type volute pump  
Suction/Discharge port diameter·········································································· 25 mm  
Total water head ·····································································································45 m  
Discharge(Max.) ·····························································································130  
/ min.  
Engine Type························································································· Air-cooled 2cycle engine  
Model·································································································· Zenoah G43LH-D  
Displacement······································································································· 41.5 cc  
Max. output···················································································· 1.75(HP)at 7200 rpm  
Fuel ······················································································· Mixture(Gasoline 25:Oil 1)  
Fuel tank capacity ································································································ 0.95  
Max. operating time/Fuel charge ··························································· Approx. 40 min.  
Starting Method···························································································Recoil starter  
Overall size(L x W x H) ··················································································320 x 257 x 334 mm  
Dry weight·····························································································································7.5 kg  
Standard Accessories  
Suction hose(3m)·········································································································· 1  
Strainer·························································································································· 1  
Hose coupling ··············································································································· 3  
Clump·····························································································································3  
Nipple 25x20 ··················································································································1  
Screwdriver ····················································································································1  
Plug wrench ·················································································································· 1  
Specifications are subject to change without notice.  
8   
 
5. Fuel  
WARNING  
• Gasoline is very flammable. Avoid smoking  
or bringing any flame or sparks near fuel.  
Make sure to stop the engine and allow it  
cool before refueling the unit. Select outdoor  
bare ground for fueling and move at least  
3m(10ft) away from the fueling point before  
starting the engine.  
• The RedMax engines are lubricated by oil  
specially formulated for air-cooled 2-cycle  
gasoline engine use. If RedMax oil is not  
available, use an anti-oxidant added quality oil  
expressly labeled for air-cooled 2-cycle engine  
use.(FC GRADE OIL)  
RECOMMENDED MIXING RATIO  
GASOLINE 25:OIL 1  
• Exhaust emission are controlled by the  
fundamental engine parameters and  
components(eq., carburation, ignition timing  
and port timing) without addition of any  
major hardware or the introduction of an  
inert material during combustion.  
25:1 MIXING CHART  
GASOLINE Liter  
1
2
3
4
5
2-CYCLE OIL ml 40  
80 120 160 200  
• These engines are certified to operate on  
unleaded gasoline.  
• Make sure to use gasoline with a minimum  
octane number of 90 ROZ(USA/Canada : pump  
octane min.87)  
• Unleaded gasoline is recommended to reduce  
the contamination of the air for the sake of your  
health and the environment.  
• Poor quality gasolines or oils may damage  
sealing rings, fuel lines or fuel tank of the  
engine.  
HOW TO MIX FUEL  
1. Measure out the quantities of gasoline and oil to  
be mixed.  
2. Put some of the gasoline into a clean, approved  
fuel container.  
3. Pour in all of the oil and agitate well.  
4. Pour in the rest of gasoline and agitate again for  
at least one minute.  
5. Put a clear indication on the outside of the  
container to avoid mixing up with gasoline or  
9   
 
5. Fuel  
other containers.  
6. Indicate the contents on outside of container for  
easy identification.  
FUELING THE UNIT  
1. Untwist and remove the fuel cap. Rest the cap  
on a dustless place.  
2. Put fuel into the fuel tank to 80% of the full  
capacity.  
3. Fasten the fuel cap securely and wipe up any  
fuel spillage around the unit.  
WARNING  
1. Select bare ground for fueling.  
2. Move at least 10 feet(3 meters) away from the  
fueling point before starting the engine.  
3. Stop the engine before refueling the unit.  
FOR YOUR ENGINE LIFE, AVOID;  
1. FUEL WITH NO OIL(RAW GASOLINE) – It will  
cause severe damage to the internal engine  
parts very quickly.  
2. GASOHOL – It can cause deterioration of rubber  
and/or plastic parts and disruption of engine  
lubrication.  
3. OIL FOR 4-CYCLE ENGINE USE or WATER  
COOLED 2-CYCLE ENGINE USE – It can  
cause spark plug fouling, exhaust port blocking,  
or piston ring sticking.  
4. Mixed fuels which have been left unused for  
a period of one month or more may clog the  
carburetor and result in the engine failing to  
operate properly.  
10   
 
6. Set up  
IMPORTANT  
• As a suction hose, be sure to use attached  
suction hose(nominal diameter 25mm x 3m) or  
an equivalent ‘water suction hose’ only.  
• Securely connect hoses with attached hose  
couplings and clumps.  
• If the suction hose connection is loose, or a  
packing in hose coupling has been lost or  
damaged, air may be sucked into the pump and  
interrupt water suction (air lock).  
• A strainer shall be placed so that it does not  
appear above water level nor suck bottom sand  
and mud.  
1. Place your pump at nearby water resource  
horizontally.  
2. Insert attached hose couplings to the suction  
hose and discharge hose and tighten them with  
clumps.  
3. After checking the packing of each hose  
coupling, connect the suction hose to a suction  
port and the discharge hose to a discharge port.  
F1  
NOTE  
Discharge port angle can be changed to 3 different  
directions. Adjust to your operating condition.  
4. Submerge the suction hose strainer in the water.  
5. Lay the discharge hose where necessary.  
Arrange protective covers if the hose can be  
disturbed by foot steps of others.  
6. Remove self-suction plug and top up the pump  
with water. (F1)  
F2  
7. Fill up fuel tank with fuel and tighten the tank cap  
securely. (F2)  
11   
 
7. Operation  
WARNING  
• Fuel(Gasoline) is highly flammable and  
incorrect handling will cause fire accident.  
Strictly avoid smoking or fire during mixing  
or supplying the fuel.  
• Be sure to stop the engine and allow it to be  
cooled before refueling.  
• Spilled fuel shall be completely wiped away  
with wiping cloth, etc. before restarting the  
engine.  
• Do not leave any flammable object around  
engine exhaust port.  
WARNING  
Before starting the engine, check if there is  
anything that must not be wet near the discharge  
hose tip. Give warning to nearby people of starting  
water discharge.  
IMPORTANT  
• Idle operation with no water in the pump may  
cause pump damage. Before starting the engine,  
check if the pump is filled with self-  
suction(priming) water. In case the suction  
strainer comes out of the water level during  
operation, immediately reduce the engine speed  
and stop the operation.  
• Confirm that the suction hose connection is not  
too loose. Loose connection may result in no  
suction water.  
• In case the discharge hose is clogged or a valve  
connected to the discharge hose is closed, the  
pump may not suck water.  
• Stepping on the discharge hose or sudden  
closure of the discharge valve may create  
instantaneous high pressure in the pump and  
result in pump damage(Water Hammer Effect).  
Arrange protective covers if the hose can be  
disturbed by others stepping on, and avoid  
closing the valve rapidly.  
12   
 
7. Operation  
STARTING ENGINE  
1. Push a priming pump at lower side of the  
carburetor several times until you can see the  
fuel flows into a clear tube. (F3)  
F3  
2. Put the choke lever to CLOSE position, and set  
the throttle lever 1/3 to 1/2 open from fully  
returned position. (F3)  
NOTE  
Choke lever to OPEN for restarting immediately  
after stopping engine.  
3. Confirm that the machine is stable on the  
ground. While holding the plug guard with your  
left hand, pull the starter knob with right hand.  
Starter knob shall be initially pulled gently, then  
vigorously when you feel resistance. (F4)  
F4  
IMPORTANT  
Avoid pulling out entire length of the rope or free  
returning of rope by releasing the knob. Doing this  
may cause starter failure.  
NOTE  
In case the engine does not start due to excess  
fuel, fully open the choke and throttle levers and  
repeat pulling the rope. Or take out the spark plug  
to dry and repeat the procedure.  
4. When the engine is started, gradually open the  
choke lever, also return the throttle lever, and  
allow the engine 2 to 3 minutes of warming up at  
a low speed.  
5. Operate the engine at a half throttle until the  
water in suction hose reaches the pump. As  
water discharge is started, adjust the throttle  
according to your required flow rate within the  
capacity.  
13   
 
7. Operation  
STOPPING ENGINE  
F5  
WARNING  
In case of emergency, immediately stop the  
engine.  
1. Return the throttle lever and run engine 1 to 2  
minutes for cooling down.  
2. Press the engine stop button(yellow) until the  
engine completely stops. (F5)  
AFTER USE  
F6  
1. Release a drain plug at lower part of the pump  
and drain the water out of the pump. (F6)  
2. Disconnect the hoses, clean them for storage.  
IMPORTANT  
During cold climate, be sure to drain the pump after  
every use. At an ambient temperature below  
freezing point, the water in the pump casing may  
freeze and damage the pump.  
14   
 
8. Maintenance  
WARNING  
• Be sure to stop the engine and keep off fire for  
inspection and maintenance.  
• Always use our genuine parts/oils or our  
specified goods for replacement.  
AIR CLEANER  
After every 25 hours of operation, release the air  
cleaner cover and remove dusts. In case the  
element is dirty, carefully wash it with warm water  
containing neutral detergent. Completely dry before  
refitting the element. If the element is deformed or  
damaged, replace it with new one.  
IMPORTANT  
Clogged air cleaner spoils engine performance.  
Also, operation with no element or with deformed or  
damaged element causes irregular wear outs of the  
engine mechanism.  
F7  
NOTE  
To remove the air cleaner cover, disengage a clip  
on the light side of the cover first. When recovering,  
engage right side clip first. (F7)  
Element Part No.1750-82020  
FUEL TANK  
After every 25 hours of operation, check inside of  
the tank and remove dirt or water if any.  
F8  
• Fuel Filter  
Remove any dirt. If the filter is badly clogged,  
replace with new one. (F8)  
• Fuel Tank Cap  
Check the air vent for choking with dirt. Remove dirt  
if any. (F8)  
IMPORTANT  
• Clogged fuel filter and choked vent valve reduce  
engine speed or cause unstable engine  
revolution.  
15   
 
8. Maintenance  
• Operation with no fuel filter cause clogging of the  
carburetor.  
Fuel Filter Part No. 3302-85400  
SPARK PLUG  
F9  
WARNING  
Do not touch the spark plug with bare hands  
immediately after stopping the engine. There is  
a possibility of burns by high temperature.  
After every 25 hours of operation, remove the  
spark plug and clean the electrode using wire  
brush, etc. (F9)  
Recommended plug gap is 0.6~0.7mm.  
Use the specified plug for replacement.  
IMPORTANT  
Excess fuel and poor quality oil may contaminate  
the plug electrode and end up with difficulty to start  
the engine.  
Specified Spark Plug  
Champion : CJ-6Y  
NGK  
:
BPM7A  
INTAKE AIR COOLING VENT  
F10  
WARNING  
Never insert anything into the intake air cooling  
vent during engine operation.  
It may crush with internal rotating components.  
After every 25 hours of operation, check the intake  
air cooling vent and cylinder fins and remove any  
dirt. (F10)  
IMPORTANT  
Clogging of the air cooling vent and cylinder fins  
may cause overheating of the engine and result in  
engine failures.  
16   
 
8. Maintenance  
ADJUSTING IDLE SPEED  
Engine idle speed is already adjusted at shipping.  
However, if the engine stalls due to too low engine  
speed when fully returning the throttle lever or if  
you feel it to be too high, adjust the speed. Idle  
adjusting screw is on the upper part of the  
carburetor.  
F11  
Engine speed increases with clockwise turning of  
the screw and decreases with counterclockwise  
turning. (F11)  
17   
 
9. Storage  
STORING FOR LONG PERIOD  
IMPORTANT  
• To stop using your machine for a long  
period, drain fuel from the fuel tank and  
the carburetor before storing it. Fuel left  
behind inside there for long period may  
clog the carburetor and cause engine  
troubles as no starting of engine or  
reduced engine output.  
• Leave the fuel cap loose during storage.  
Over tightening may cause deform of  
packing.  
F12  
In case the pump is not used for more than 1  
month, apply following maintenance  
procedures before storing it in dry, clean  
place:  
1. Drain fuel from the fuel tank. (F12)  
2. Fill the pump with water and start the  
engine at a low speed until it stops with no  
fuel.  
3. Remove the spark plug and pour 1~2cc of  
2 cycle engine oil into the cylinder, and  
pull the starter rope for 2~3 times.  
4. Refit the spark plug. Pull the starter rope  
and return it when you feel a resistance.  
5. Drain water from the pump completely,  
and wipe off water on the pump using dry  
cloth. (F13)  
F13  
18   
 
10. Troubleshooting guide  
STATUS  
Engine does not start  
CAUSE  
Faulty fuel(incorrect, degraded)  
Excess fuel sucked  
COUNTERMEASURE  
Change with proper fuel(see Page 9)  
Open choke and repeat pulling rope  
(see Page 13)  
Exhaust muffler choked  
cleaning  
Spark plug electrode dirty, short or  
disconnected circuit  
Cleaning of electrode or replace plug  
(see Page 16)  
No suction of water  
Insufficient self-sucking water in pump  
Loose connection of suction hose  
Faulty packing in suction hose connection  
Suction hose crack breakage  
Top up with water(see Page 11)  
Tighten securely not to suck air  
Replace with proper one(ask for service)  
Replace with proper one  
Folded discharge hose, closed valve  
Clogged suction strainer  
Extend and stretch hose, open valve  
Cleaning of suction strainer  
Lowering pump height to water level  
Secure water resource near to discharge  
place  
Discharge water flow rate too small  
Pump position too high from water level  
Too far or too high place to discharge  
Engine output too low  
Check fuel degrading, water ingress.  
Replace if needed(see Page 9)  
Check air filter clogging, cleaning  
(see Page 15)  
Check fuel filter clogging, cleaning  
(see Page 15)  
Carburetor adjustment  
Water leakage from pump  
Loosen assembly bolts  
Tightening of bolts  
If further assistance is needed, contact your authorized service dealer.  
19   
 
Warranty certificate  
Komatsu Zenoah Co.  
The Komatsu Zenoah product model No.PE2500H is covered by a Warranty of 6 months from  
the following date of purchase. In the case of professional machine used for professional work,  
such machines are covered by a Warranty of 3 months.  
We undertake according to our ability to supply free of charge all parts found defective at origin  
except in case where the defect can be traced back to either wrong manipulation or normal wear.  
Such excepted parts are not covered by this Warranty. Please address your complaints to the  
following address.  
2-142-1 Sakuragaoka, Higashiyamato, Tokyo, 207-8788 Japan  
 

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