Koshin SEY-50D User manual

19-05 012323301(ENG)
DIESEL ENGINE
PUMP
CONTENTS
INTRODUCTION
NAME OF PARTS................................................ 2
SAFETY PRECAUTIONS.................................... 4
OTHER PRECAUTIONS ..................................... 6
PREPARATION
PREPARATIONS FOR STARTING ..................... 7
PREPARATIONS FOR PUMP OPERATION ..... 10
HOW TO USE THE PRODUCT
STARTING THE ENGINE AND PUMP .............. 11
STOPPING THE ENGINE AND PUMP ............. 13
AFTER USING THE PRODUCT........................ 14
PERIODIC CHECKS AND MAINTENANCE...... 15
LONG-TERM STORAGE .................................. 21
INSPECTION AND MAINTENANCE
TROUBLESHOOTING ...................................... 22
OTHER ITEMS
SPECIFICATIONS............................................. 24
PERFORMANCE CARVE ................................. 27
SPAREPARTS ................................................... 27
Thank you for purchasing this product.
· Read this manual carefully before using the
product.
· Storethemanualonceyouhavenishedread-
ing it.
· Those who do not understand the content of
this operation manual should not operate the
product.
· If you lend this product to another person, ex-
plain how to use the product and instruct them
to read the operation manual carefully.
Please note that the illustrations and content in
this operation manual may differ to the actual
productduetochangestothespecications.
SEY-50D, SEY-80D, SEY-100D
STY-50D, STY-80D, STY-100D
KTY-50D, KTY-80D, KTY-100D
OPERATION MANUAL

2
NAME OF PARTS
■ Centrifugalpump(Hidelspump),Semi-trashpump
Decompression lever
Primingwaterllercap
Discharge port
Suction port
Mufer
Water pump
Oil drain plug
Air cleaner
Speed control knob
Diesel engine
Oilllercap/dipstick
Fuel tank
Fuel gauge
Fuelllercap
Long bolt
(Semi-trash
pump only)
Water drain plug
Recoil starter handle
Frame

3
■ Trashpump(KTY-50D)
Decompression
lever
Primingwaterllercap
Discharge port
Frame
Suction port
Mufer
Fuel tank
Fuel gauge
Fuelllercap
Water drain plug
■ Trashpump(KTY-80D,KTY-100D)
Decompression
lever
Primingwaterllercap
Discharge port
Frame
Suction port
Mufer
Fuel tank
Fuel gauge
Fuelllercap
Water drain plug
NAME OF PARTS
Water pump
Oil drain plug
Air cleaner
Speed control
knob
Diesel engine
Oilllercap/
dipstick
Recoil starter
handle
Water pump
Oil drain plug
Air cleaner
Speed control
knob
Diesel engine
Oilllercap/
dipstick
Recoil starter
handle

4
SAFETY PRECAUTIONS
Read these safety precautions carefully before using the product. The cautions shown here are
for using the product correctly and to prevent hazards and injury to those using the product and
other people.
■Injuriesandhazardsthatmayoccurifthedisplayedcontentisignoredandtheproduct
isusedincorrectlyarecategorizedas"DANGER","WARNING",and"CAUTION".Allcat-
egoriesareimportantforsafety,soalwaysfollowthem.
■Contentthatyoumustfollowisdescribedincategories.
"PROHIBITED"contentthatyou
mustnotdo.
"EXECUTE"contentthatyoumust
complywith.
■Otherindications: NOTICE …Indicatesthecorrectwaytooperate
theproduct,andnotesoninspectionandmaintenance.
DANGER Content for which it is considered highly likely a person will
die or be seriously injured.
WARNING Content for which it is assumed a person may die or be seri-
ously injured.
CAUTION Content for which it is assumed a person may be moderately
injured and property damage may occur.

5
PREVENTING FIRES
Never add fuel to the fuel tank while the
engine is running. Wipe away all fuel spills
with a clean cloth. Keep gasoline, kerosene,
matches,otherexplosivesandammable
away from the product, since the tempera-
turearoundtheexhaustmuferisveryhigh
during operation.
·Topreventrehazardsandtoprovide
adequate ventilation, keep the pump at
least 1 m (3 ft) away from the building and
other equipment during operation.
·Operatethepumponaat,level,andrm
surface. If the pump is tilted, fuel spillage
may result.
PREVENTINGEXHAUSTGAS 
INHALATION
· Exhaust gas contains poisonous carbon
monoxide.
· Never use the pump in poorly ventilated
locations such as indoors or inside tun-
nels. If indoor operation is unavoidable,
provide proper ventilation so that people
and live stock will not be affected.
PREVENTINGBURNS
·Nevertouchthemufer,mufercoveror
engine body while the engine is running
or hot.
OTHER SAFETY ITEMS
· As this product is heavy, you may be in-
jured if you drop it on your feet or hurt
your back when moving it, so use several
people to move it.
· Know how to stop the pump quickly and
understand how to deal with all of the con-
trols. Never permit anyone to operate the
pump without proper instructions.
· Always wear a helmet and safety shoes
(non-skid soles) and proper clothes.
·Donotoperateunderinuenceofalcohol.
· Keep children and pets away from the
pump when it is in operation.
· Keep away from rotating parts while the
pump is running.
· Work according to rules and regulations
of work area.
SAFETY PRECAUTIONS
WARNING

6
While the engine is still new, applications
of heavy loads may shorten the life of the
engine.Duringtherst20hours,followthe
break-in procedures.
1. Avoidoverloads
During break-in period, avoid applying
heavy loads before the engine is stabi-
lized.
2. Changeengineoilregularly
About one month or 20 hours after initial
starting and every 3 months or 100 hours
thereafter, change the engine oil while the
engine is still warm.
OTHER PRECAUTIONS
NOTICE
· Be sure to drain the oil while the engineis
warm,otherwiseitmaybedifcultto
drain the oil completely.

7
1. Selectionoffueloil
Use the most suitable diesel fuel oil for
the engine.
2. Keepdustandwateroutofthefuel
Whenllingthefueltankfromdrums,
make sure no dust or water are mixed in
with the fuel since this may lead to serious
fuel injection pump and nozzle problems.
After 3–4 days : Put a
suction piple halfway
into the drum
(Water and dust ac-
cumulate in the lower
portion of the drum)
3. Donotoverll
Overllingisdangerous.Withtheengine
level,donotllthetankbeyondthetop
of the indicating ring (red) inside the fuel
tanklter.
CAUTION
Onlyusetherecommendeddieselfuel
oil.
Use of non-recommended fuel may cause
clogging in the fuel oil strainer, fuel injection
pump and fuel injection nozzle. This clog-
ging often causes sudden engine stops just
after starting.
ThefuelshouldhaveaCetanevalueof
morethan45inordertopreventdifcult
starting,misringandwhiteexhaust
smoke.
Dieselfueloilsubstitutesarenotrec-
ommended;theymaybeharmfultofuel
systemcomponents.
Thefuelshouldbefreeofwaterand
dust,becausethesecancausetrouble
inthefuelinjectionpumpandnozzle.
After purchasing
fuel: Allow drum to
stand 3–4 days
The fuel gauge displays how much fuel is
remaining. When the fuel tank is full, the
red indication is at "F" and gets closer to
"E" as fuel is consumed. When the red in-
dication bar gets to "E", refuel the engine
as soon as possible.
Red indication
Indicating ring (red)
Fuel gauge
Fuelllercap
PREPARATIONS FOR STARTING
SelectionandHandlingofFuelOil
NOTICE
· The display is only a guide. Always
check the fuel limit position on the indi-
catingring(red)insidethefueltanklter.
· Check the indication when the product is
level. If the product is on an angle, you
will not get an accurate reading.

8
(°C)
S.A.E.
service
grade
Operating temp
Recommended value
Usable limit
40
-30 -20 -10 0 10 20 30 40
(°F)
30
20
20W
10W
20W 40
10W 30
0 20 6040 80 100
Refuelinawellventilatedareawiththe
enginestopped.Alsocheckthattheen-
ginehassufcientlycooled.
Donotsmokeorallowamesorsparks
intheareawheretheengineisrefueled
orwherefuelisstored.
Donotoverllthetankandmakesure
thellercapissecurelyclosedafterre-
fueling.
Becarefulnottospillfuelwhenrefue-
ling.Ifanyfuelisspilled,makesurethe
areaisdrybeforestartingtheengine.
Useproperengineoil.
If inferior oil is used, or if the engine oil is not
changed regularly, the risks of piston sei-
zure, piston ring sticking, accelerated wear
of the cylinder liner, bearings and other mov-
ingcomponentsincreasessignicantly.The
pump's life may be seriously shortened. We
recommend CD or Higher oil of API grade
classication.
Always use oil with the right viscosity for the
ambient temperature in which the engine is
being operated. Use the chart below when
choosing the engine oil.
SEY-50D/SEY-80D/
STY-50D/STY-80D/
KTY-50D
SEY-100D/
STY-100D/
KTY-80D
KTY-100D
Engine
oil
capacity
0.8L 1.1 L 1.6 L
Filltheoiluptothemouthofthellerport
with tne engine placed on the level.
PREPARATIONS FOR STARTING
Filluptothetopoftheller
port with the engine on the
level
Beforecheckingtheoillevel,makesure
thepumpissittinglevel.
If it is tilted, you may add either too much or
toolittleoil.Consequently,youmayoverll
and the engine will consume too much oil
and the oil temperature will become dan-
gerously high: or you may not add enough
oil, and the engine could seize up. Faults
caused by engine seizure are not covered
by the warranty.
Whencheckingtheoil,simplydipthe
dipstickintotheoilpan.Donotscrewin
thedipstick.
Besuretochecktheengineonalevel
surfacewiththeenginestopped.
Upper level (H)
Lower level (L)
Oilllercap/dipstick
Oil drain plug
SelectingandHandlingEngineOil
WARNING
WARNING
CAUTION

9
1. Loosenthewingnut,detachthecover
oftheaircleanerandremovetheele-
ment.
Donotwashtheaircleanerelementwith
detergent.
Replacetheelementifoutputfallsora
badexhaustcolorisnoticed.
Neverrunthepumpwithoutanairclean-
erelement.Sandorforeignmatteris
pronetogettinginsidetheengine,which
mayhastenenginewearandtear.
2.Reattachthecoveroftheaircleaner
andtightenthewingnut.
Air cleaner cover
Wing nut
PREPARATIONS FOR STARTING
ServicingtheAirCleaner
CAUTION

10
Please install coupling in order of :
1) ->2) ->3).
If you install coupling packing not inabove
order, air leakage may result, affecting water
suctionefciency.
1. Fixthestrainerattheendofthesuc-
tionsidehoseandtightenitwiththe
hoseband.Thenplaceitinthewater.
Make sure suction hose is connected
properly. In case of no self-priming after
llingpumpwithwaterandengineisstart-
ed, check suction hose connection care-
fully again. Most cases of no self-priming
are caused by improper hose connection.
· Use suction hose for suction side.
· Do not change pump diameter by alter-
ing suction hose.
2. Fixthesuctionsidehosetothesuction
portofthepumpandtightenitwitha
band.
3. Fixthedischargeportsidehosetothe
pumpandtightenitwithaband.
4. Fixtheendofthehosetotheplace
wherewaterisrequired.
Ensure no obstacle is at discharge hose
side.
Donotblock,kink,orobstructtheowof
liquid through the discharge hose.
5. Fillthewaterpumpwithwater.(This
wateriscalled"primingwater".)Re-
movetheprimingwaterllercapand
pourthewaterwithabucketorcup.
Fillupuntilwaterisdischargedfrom
thedischargeport.
Aspumpisself-primingtype,fullllwater
fully from priming port into pump casing
before running.
Breakdowns caused by dry running are
not covered by the warranty.
Different accessories are suitable for different
models. Please check connection diameter
and install correct parts.
Hose band
Strainer
Discharge hose
2) Hose nipple
PREPARATIONS FOR PUMP OPERATION
1) Coupling
3) Coupling packing
Suction hose
Wooden boards
or blocks
Soft ground
Priming water
llercap
PreparationsforPumpOperation
HowtoInstalltheCoupling
Priming water
NOTICE
· Pump failure will occur if the suction
strainerisnotproperlytted.
The strainer keeps the size of the
suspended solids entering the pump
to the predetermined size the pump has
been designed to handle.
· The strainer should be installed in the
position where water accumulates most
easily. When installing on soft ground,
such as gravel or sand, position wooden
boards or blocks, etc. below the strainer
to prevent it from sinking into the ground.
Alternatively, suspend the hose avoiding
the bottom.
Coupling set