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Koshin SEV-25S Owner's Manual

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Owner's Manual
CLEAR WATER
PUMP
OWNER'S MANUAL
SEV-25S, SEV-50S, SEV-80S
1. SAFETY .............................................. 3
3. CONTROL SYSTEM ......................... 10
5. OPERATION ...................................... 18
6. STARTING THE ENGINE .................. 22
7. STOPPING THE ENGINE ................. 25
8. MAINTENANCE ................................ 27
9. STORAGE ......................................... 32
10. TROUBLESHOOTING .................... 34
11. SPECIFICATION ............................. 36
www.koshinamerica.com/
Toll Free: 1-800-634-4092
E-Mail: CustomerService@koshinamerica.com
21-07 012354101

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  • Page 1: Table Of Contents

    Owner’s Manual CLEAR WATER PUMP OWNER’S MANUAL SEV-25S, SEV-50S, SEV-80S 1. SAFETY ..........3 2. COMPONENT IDENTIFICATION ..8 3. CONTROL SYSTEM ......10 4. PRE-OPERATION INSPECTION ..13 5. OPERATION ........18 6. STARTING THE ENGINE ....22 7. STOPPING THE ENGINE ....25 8.
  • Page 2 The manual instructs the user how to operate the water pump including SEV-25S, SEV-50S, and SEV-80S, before operation to get the best results. If a problem should arise or if you have any questions about the pump, consult an authorized dealer of our company.

  • Page 3: Safety

    SAFETY 1. SAFETY Our company's water pump is designed to give safe and reliable service if operated according to instructions. Read and understand the Owner’s Manual before operating the water pump. Failure to do so could result in personal injury or equipment damage. Safety Messages Your safety and the safety of others are very important.
  • Page 4 SAFETY SAFETY 1) Safety Instruction Clean water pump and high pressure pump are only designed for pumping clean water. Pump only water that is not intended for human consumption. Pumping flammable liquids, such as gasoline or fuel oils, can result in a fire or explosion, causing serious injury.
  • Page 5 SAFETY SAFETY 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, and in places i l e i l l . t i After refueling, cover the fuel tank well and screw it down.
  • Page 6 SAFETY SAFETY 2) Safety Label • 6 • · 5 ·...
  • Page 7 SAFETY SAFETY • 7 • · 6 ·...

  • Page 8: Component Identification

    COMPONENT IDENTIFICATION COMPONENT IDENTIFICATION COMPONENT IDENTIFICATION 2. COMPONENT IDENTIFICATION 2. COMPONENT IDENTIFICATION 1" CLEAN WATER PUMP CLEAN WATER PUMP · 7 · • 8 •...
  • Page 9 COMPONENT IDENTIFICATION 2"/3"/4"/6" CLEAN WATER PUMP CLEAN WATER PUMP DISCHARGE PORT FUEL TANK CAP THROTTLE LEVER CHOKE LEVER FUEL COCK RECOIL STARTER GRIP OIL DIPSTICK ENGINE SWITCH FRAME PRIMING WATER FILTER CAP AIR FILTER MUFFLER SUCTION PORT OIL DRAIN PLUG PUMP DRAIN PLUG ·...

  • Page 10: Control System

    CONTROL SYSTEM 3. CONTROL SYSTEM Before operating our company's water pump, carefully read and understand the owner’s manual and be familiar with each control function. Know how to operate and how to do in a urgency condition. 1) Fuel Lever (SEV-50S, -80S only) Set the fuel lever to the “OPEN”...
  • Page 11 CONTROL SYSTEM ENGINE SWITCH ENGINE SWITCH CLOSE CLOSE OPEN OPEN 3) Choke Lever The choke lever is used for opening and closing the choke of the carburetor. Set the choke lever to the “CLOSE” position for cold starting. Set the choke lever to the “OPEN” position for normal operation or the Engine's warm starting.
  • Page 12 CONTROL SYSTEM 4) Throttle Lever Adjust the throttle lever to change speed of the engine, thereby adjust the discharge water. For a bigger water discharge, set the throttle lever to the HIGH position, for a smaller water discharge, set the throttle lever to the LOW position.

  • Page 13: Pre-Operation Inspection

    PRE-OPERATION INSPECTION 4. PRE-OPERATION INSPECTION For your safety and to maximize the service life of your equipment, it is very important to take a few moments before you operate the pump to check its condition. Be sure to take care of any problem you find or have your servicing dealer correct it, before you operate the pump.
  • Page 14 PRE-OPERATION INSPECTION 2) Check The Suction And Discharge Hoses Check the general condition of the hoses. Be sure the hoses are in serviceable condition before connecting them to the pump. Remember that the suction hose must be of a reinforced construction to prevent hose collapse.
  • Page 15 PRE-OPERATION INSPECTION OILING HOLE OIL DIPSTICK OIL LOWER MARK Engine operating with oil at the lower oil mark will cause engine damage. 4 ) Check Air Filter A dirty air filter will restrict air flow to the carburetor, reduce engine performance and thereby reduce water Pump performance.
  • Page 16 PRE-OPERATION INSPECTION dirt, clean it, if it is damaged, replace with a new one. If it is an oil bath air filter, Check the oil capacity. Reinstall the air filter back in reverse order and screw the butterfly nut down. Assembly should be correct, Never run the water pump without the air filter or with a damaged air filter assembled, if so, rapid engine wear will result.
  • Page 17 PRE-OPERATION INSPECTION Refuel in a well-ventilated area. If the engine has run for a while, it has to be cooled before being refueled. Fuel can damage paint and plastic. Be careful not to spill fuel when filling your fuel tank. 6) Fuel Recommendations Use gasoline with octane rating ≥90.

  • Page 18: Operation

    OPERATION 5. OPERATION 1) Safe Operating Precautions To safely utilize the full potential of this pump, you need a complete understanding of its operation and a certain amount of practice with its controls. Before operating the pump for the first time, please review the "Safety Instruction"...
  • Page 19 OPERATION DISCHARGE HEAD TOTAL HEAD SUCTION HEAD 3) Suction Hose Installation Use the commercially available hose and hose connector, and the hose clamp provided with the pump to install the suction, and tighten the clamp. Firmly fix the suction hose without moving. SUCTION PORT SEALING WASHER HOSE CONNECTOR HOSE CLAMP RING...
  • Page 20 OPERATION SEV-25S: 1 " ( 25 mm ), SEV-50S: 2 " ( 50 mm ), SEV-80S: 3 " ( 80 mm ) Use a hose clamp to securely fasten the hose connector to the suction in order to prevent air and water leakage. Check to ensure that the hose connector sealing washer is in a good condition.
  • Page 21 OPERATION friction and improve pump's output. Tighten the hose clamp securely to prevent the discharge hose from disconnecting under a high pressure. 5) Priming The Pump Before starting the engine, make sure to fill the pump with water: screw off the priming plug and prime the pump fully with clean water. Don't screw off the priming plug during operation of the pump to avoid damaging the equipment and injuring persons.

  • Page 22: Starting The Engine

    STARTING THE ENGINE 6. STARTING THE ENGINE 1) Screw the priming plug off and prime the pump with water until the 2) (SEV-50S, -80S only) Move the fuel valve lever to the “ON” position. FUEL VALVE LEVER FUEL COCK OPEN 3) To start a cold engine, move the choke lever to the “CLOSED”...
  • Page 23 STARTING THE ENGINE 4) Move the throttle lever away from the “SLOW” position about 1/3 of the way toward the “FAST” position. THROTTLE LEVER FAST SLOW THROTTLE LEVER 5) Turn the engine switch to the “ON” position. ENGINE SWITCH ENGINE SWITCH(the “ON”...
  • Page 24 STARTING THE ENGINE STARTER GRIP STARTER GRIP 7) If the choke lever was moved to the CLOSED position to start the engine, gradually move it to the OPEN position as the engine warms up. CHOKE LEVER CHOKE LEVER 8) Setting engine speed After starting the engine, move the throttle lever to the FAST position for self-priming, and check pump output.

  • Page 25: Stopping The Engine

    STOPPING THE ENGINE 7. STOPPING THE ENGINE To stop the engine in an emergency, simply turn the engine switch to the OFF position. Under normal conditions, use the following procedure: 1) Move the throttle lever to the SLOW position. THROTTLE LEVER FAST 2) Turn off engine switch: Turn the engine switch to OFF position.
  • Page 26 STOPPING THE ENGINE 3) (SEV-50S, -80S only) Turn fuel valve lever off: Turn the fuel valve lever to OFF position. FUEL COCK FUEL VALVE LEVER CLOSED CLOSE After use, remove the pump drain plug and drain the pump chamber. Remove the filler cap and flush the pump chamber with clean, fresh water.

  • Page 27: Maintenance

    MAINTENANCE 8. MAINTENANCE The engine must be properly maintained to ensure its operation be safe, economy and trouble-free, as well as eco-friendly. In order to keep your gasoline engine in good working condition, it must be periodically serviced. The following maintenance schedule and routine inspection procedures must be carefully followed Frequency Thereafter, every...
  • Page 28 MAINTENANCE should govern. ● If you have missed the scheduled time to maintain your engine, do it as soon as possible. Stop the engine before servicing. Put the engine on a level surface and remove the spark plug cap to prevent the engine from starting. Never run your engine in a poorly ventilated room or other enclosed area, be sure to keep good ventilation in working area.
  • Page 29 MAINTENANCE OIL DIPSTICK WASHER OIL DRAIN BOLT UPPER MARK 4. Reinstall the oil dipstick and tighten it. Used engine oil may cause skin cancer if repeatedly left in contact with the skin for prolonged periods. Although this is unlikely unless you handle used oil on a daily basis, it is still advisable to thoroughly wash your hands with soap and water as soon as possible after handling used oil.
  • Page 30 MAINTENANCE 4) Air Filter Service engine performance, if you operate the pump in very dusty areas, clean If so, rapid engine wear will result. Remove the air filter and the element. 1. Wash the element with home detergents and warm water (or non- 2.
  • Page 31 MAINTENANCE is damaged, replace the spark plug. Correct as necessary by carefully bending the side electrode. The gap should be: 0.70-0.80 mm. SPARK PLUG SOCKET WRENCH SPARK PLUG CAP 4. Check if the spark plug gasket is in good condition. In order to avoid damage to the thread in the cylinder head, screw in the spark plug carefully by hand.

  • Page 32: Storage

    STORAGE 9. STORAGE 1) Remove priming plug and drain plug, flush the chamber with clean water, reinstall the priming plug and drain plug. After stopping the engine, cool for half an hour at least, then flush all outer surfaces and wipe it.
  • Page 33 STORAGE 5) Pull the starter grip slowly until resistance is felt. During such a process, intake and exhaust valves keep closed to restrict the moisture entering into cylinder head, then, return the starter grip gently. 6) Repair damaged enamel paint, and apply a thin film of grease to the areas likely to be rusty.

  • Page 34: Troubleshooting

    TROUBLESHOOTING 10. TROUBLESHOOTING 1) Engine ENGINE WILL CAUSE CORRECTION NOT START Move fuel valve lever to ON Fuel valve OFF. position. Check Control Parts Move choke lever to CLOSED Choke open. position unless engine is warm. Engine switch OFF. Turn engine switch to ON. Out of fuel.
  • Page 35 TROUBLESHOOTING 2) Water pump NO PUMP OUTPUT CAUSE CORRECTION Check pump chamber Pump not primed. Prime pump. Hose collapsed, cut or Replace hose. punctured. Strainer not completely Sink the strainer and the end of a suc- underwater. tion hose completely underwater. Check suction hose Replace sealing washer if it is missing Air leak at connector.

  • Page 36: Specification

    SPECIFICATION 11. SPECIFICATION Product name Clear water pump Model name SEV-25S Category Self-priming, Centrifugal pump Suction 1" (25 mm) Connection Discharge 1" (25 mm) Connection thread Outer pipe thread NPT Total head 95 ft (29 m) Discharge volume 36 USG/min (140 L/min) Max.
  • Page 37 Max. suction head 19 ft (6 m) 19 ft (6 m) Type Forced air-cooled 4-stroke gasoline engine Model KOSHIN K210-S Displacement 0.06 USG (209 cm Rated output 5.0 HP (3.7 kW) / 3600 rpm Max. output 5.8 HP (4.3 kW) / 3600 rpm...
  • Page 38 SPECIFICATION 11. SPECIFICATION Performance curve (USG/min) (ft) SEV-80S SEV-50S SEV-25S 800 1000 1200 Discharge volume (L/min) Note: Performance ratings are guaranteed minimum, not inflated maximum. Adjusting parameter Spark plug gap 0.70-0.80 mm Engine idle speed 1600 ± 160 rpm Intake valve: 0.10-0.15 mm Valve clearance (cooled) Exhaust valve: 0.15-0.20 mm...
  • Page 39 • 39 •...
  • Page 40 93004-V600110-00E0...

This manual is also suitable for:

Sev-50sSev-80s

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