TOHATSU VC52AS Owner's Manual
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TOHATSU VC52AS Owner's Manual

TOHATSU VC52AS Owner's Manual

Portable fire pump
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OW N ER'S
MAN UAL
VC52AS
VC72AS
PORTABLE
FIRE PUMP
No.003-12054-3

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Summary of Contents for TOHATSU VC52AS

  • Page 1 OW N ER’S MAN UAL VC52AS VC72AS PORTABLE FIRE PUMP No.003-12054-3...
  • Page 2 Copyright © 2020 Tohatsu Corporation. All rights reserved. No part of this manual may be reproduced or transmitted in any from or by any means without the express written permission of Tohatsu Corporation.
  • Page 3 APPLICATIONS OF THIS FIRE PUMP USAGE TOHATSU fire pumps “VC52AS, VC72AS” are manufactured for use in firefighting operations. These portable fire pumps are intended only for firefighting activities in collaboration with general public fire extinguishing equipment. Using it for other applications is regarded as being used for improper purposes.
  • Page 4 Intended people All persons who operate, service or maintain the fire pump must read and understand the following items: Owner’s manual ・ Safety-related instructions on the pump and the other parts such as the battery. ・ The other owner’s manuals, such as battery charger. ・...
  • Page 5 INTRODUCTION Thank you for purchasing the TOHATSU Fire Pump. This fire pump has passed a range of quality assurance standards. Owner’s manual The portable fire pump complies with relevant laws and regulations. The manual includes a description for operation and maintenance. Before using this fire pump, be sure to read and understand the manual thoroughly.
  • Page 6 Before using this fire pump, write down the serial number in the following boxes. It will be useful in the case of asking about servicing, repairs and genuine parts. Serial Number The pump serial number (identification number) is marked on the pump casing. VC52AS VC72AS...
  • Page 7 GENERAL SAFETY INFORMATION Overview Before operating the TOHATSU fire pump thoroughly read this manual to understand the proper operating procedures including “DANGER”, “WARNING”, “CAUTION” and “NOTE”. These notices are designed to bring attention to very important information necessary to ensure safe, trouble free operation.
  • Page 8 Transporting the portable fire pump Retractable handle is folding ・ CAUTION type. hand finger ・ between top of retractable handle and bracket. When transporting the portable ・ fire pump, assign one person per handle. Also, when transport ・ portable fire pump, it should be transported holding the handle firmly.
  • Page 9 Safety devices Before operating the portable fire pump, be sure to check that all the safety devices have been installed in the appropriate positions. Before removing the safety devices, turn the main switch off. After protective devices (such as the muffler guard) have been disassembled as part of servicing and maintenance work, immediately install them back to their original locations, making sure that they are in...
  • Page 10 Service, Maintenance Servicing and maintenance of this fire pump must be carried out by o n l y t h e persons who have professional knowledge, who are familiar with the device, and who understand laws and regulations regarding safety and accident prevention. Before starting maintenance work, turn the main switch off to stop the engine.
  • Page 11 Battery Follow any safety-related instructions shown on the battery. The battery can generate flammable hydrogen gas that may cause an explosion. Do not charge the battery in closed location. Do not smoke around the battery. The battery electrolyte is caustic and may cause personal injuries.
  • Page 12 Genuine parts When replacing parts for servicing and maintenance of portable fire pumps, be sure to use only Tohatsu genuine parts. If genuine Tohatsu parts and accessories are not used, it may adversely affect the functioning and safety of the fire pump. Use genuine Tohatsu parts only.

  • Page 13: Table Of Contents

    CONTENTS SPECIFICATIONS……..……..….…...…..……….….……….…………..……… OPERATION DEVICE……….….…..………………….…...…..…….…………5 LABELS……..….….……….………...…………...………...….…………….….……7 4. OPERATING PRECAUTIONS…………..…..………...……..…..…8 DESCRIPTION OF DEVICES……..…..……..….….….…..……….…..10 PREPARATION FOR OPERATION……………….…...………….…..…21 USE OF OPERATION PANEL…………..………...…..……………………26 STARTING THE ENGINE…..……….…...…….…….….……..……..…29 PRIME AND DISCHARGE.……..……….….…………….……..….……..34 10. STOPPING THE ENGINE...……….………….…..…...…..…..….….…...41 11. MAINTENANCE AFTER OPERATION……..……..…..…..……..…...42 12. MAINTENANCE IN COLD CONDITION……...…...….………..….…49 13. USE OF ACCESSORY.……..….…..……………..….….…..….….….….…54 14.

  • Page 14: Specifications

    1. SPECIFICATIONS Model VC52AS VC72AS Description Portable pump Engine Manufacturer TOHATSU CORPORATION Model 2WT76AM Type 2-stroke, water-cooled spark ignition engine Bore ×Stroke 76 mm × 68 mm (2.99 in × 2.68 in) Number of Cylinder Piston displacement 617 cm Authorized output 30kW (40.8PS)
  • Page 15 1. SPECIFICATIONS Model VC52AS VC72AS Primer Type Rotary-vane vacuum pump (Oil less type) Max. suction height Approx. 9 m (29.5 ft) Pump Type Single suction, single stage, centrifugal pump Number of delivery outlet BSP thread 2-1/2” (male) Discharge port coupling JIS fire thread (B-9912) 2-1/2”...
  • Page 16 1. SPECIFICATIONS Performance Curve VC52AS...
  • Page 17 1. SPECIFICATIONS Performance Curve VC72AS...

  • Page 18: Operation Device

    2. OPERATION DEVICE Discharge valve (Ball cock type) Discharge valve handle Fuel tank cap Discharge valve Discharge port Engine oil tank cap Suction port Engine oil tank Front cowl Suction hose coupling (cap) Pump casing drain cock Battery Knob (wing screw) Primer strainer Spark plug (#1) Spark plug (#2) Priming lever...
  • Page 19 2. OPERATION DEVICE Control panel Pressure gauge for suction Pressure gauge for discharge Monitor lamps Overheat switch Hour meter Operation panel Main switch Floodlight projection and battery Throttle dial charging socket Operation panel warning lamps Fuel Engine oil Overheat...

  • Page 20: Labels

    3. LABEL WARNING & CAUTION (Pulley for Vacuum pump) On the fuel tank ~ Inside of the cowl...

  • Page 21: Operating Precautions

    4. OPERATING PRECAUTIONS Installing pump The fire pump must be installed on a level ground. Otherwise, an CAUTION accident may occur. If the fire pump should be installed on uneven ground, it must be secured. Place the pump as near as possible to water source, and water NOTE suction height as low as possible.
  • Page 22 4. OPERATING PRECAUTIONS When installing the portable pump in the vehicle, place the CAUTION vehicle on a level place, and install the pump. When installing the portable pump in the vehicle, make sure to apply the brakes of the vehicle in order to stop the wheels. A serious accident may occur if the vehicle moves.

  • Page 23: Description Of Devices

    5. DESCRIPTION OF DEVICES Carrying handle Carrying handle The fire pump is equipped with four carrying handles. The handles can be folded manually, and opened by rotating them by 90 degrees. Carrying handle Personal injuries may occur when CAUTION opening or closing the handle. Do not put your hands or fingers into the retractable part when operating the handle.
  • Page 24 5. DESCRIPTION OF DEVICES Rear cowl ・ When you remove the rear cowl, detach the two plug caps from the spark plugs. ・ Pull open the cowl at around the support pin. Rear cowl ・ Remove the plug caps through the holes in the cowl. Plug cap ・...
  • Page 25 5. DESCRIPTION OF DEVICES Discharge port The diameter of the thread for the fire pump is BSP thread 2-1/2” (male) JIS fire thread (B-9912) 2-1/2” (male) Thread Ball valve discharge Screw down discharge Valve (Single outlet) Valve (Single outlet) Discharge valve Use the discharge valve handle for opening and closing the discharge valve.
  • Page 26 5. DESCRIPTION OF DEVICES Drain valve Use the drain valves to drain water. Drain valves; at the pump case at the muffler at the ball cock discharge valves (Only for ball cock discharge valve type) Close all the valves when operating ・...
  • Page 27 5. DESCRIPTION OF DEVICES Engine oil tank Oil tank cap Refill appropriate amount of oil to the oil tank. Close the Oil tank cap all the time except filling. The oil tank has an oil level sensor. The warning buzzer sounds, if the engine oil is not enough filled.
  • Page 28 5. DESCRIPTION OF DEVICES Main switch (Stop switch) Main switch Turn the Main switch to run or to stop the pump. Description Function To stop the pump Running position START To start the pump running Warning lamp and Warning buzzer Turning the start switch “ON”...
  • Page 29 5. DESCRIPTION OF DEVICES -Overheat warning If the engine overheat caused by lack of cooling water, etc. then the overheat lamp lights. ・ The engine may be damaged. Do not restart the engine soon after CAUTION stopped running. ・ In the case of the overheat sensor switch is set in “ON” position, the NOTE engine stops automatically when an overheated is detected.
  • Page 30 5. DESCRIPTION OF DEVICES Throttle dial Use the Throttle dial to control discharge pressure. Throttle dial Pressure gauge for suction The pressure gauge for suction indicates the actual operating pressure. Pressure gauge for suction Pressure gauge for discharge The pressure gauge for discharge indicates the actual operating pressure.
  • Page 31 5. DESCRIPTION OF DEVICES Fuse box. Security fuses are installed for electrical circuit in the fuse boxes. There are two fuse boxes: -Black color fuse box is for 15A fuse. -Yellow color fuse box is for 5A fuse. Fuse box Spare Fuse Manual starter...
  • Page 32 Oil line mark Mechanical governor A built-in mechanical governor controls the throttle valve so that the maximum engine speed does not exceed the revolution shown below. ・ VC52AS ：5650 r/min ・ VC72AS ：5720 r/min...
  • Page 33 5. DESCRIPTION OF DEVICES Floodlight (Search light) *Option Use the floodlight projector to illuminate the location where this fire pump is operated. Connect the floodlight plug to the pump side outlet socket. Fix the projector to the tripod with tightening the adjust screw. Floodlight projector Plug Bulb 12V-35W...

  • Page 34: Preparation For Operation

    6. PREPARATION FOR OPERATION Initial charge of battery The battery can be used immediately after filling cells with electrolyte. Do not open the battery after filling it with electrolyte. Because this is maintenance free of electrode. (Sealed type battery) Refer to the INSTRUCTIONS on the battery. Fuel Fill the tank with gasoline until the maximum level Indication...
  • Page 35 6. PREPARATION FOR OPERATION Do not breathe in vapor! CAUTION Petrol fumes are very toxic. After stopping the engine, do not touch while it is hot. Refill fuel after the engine has cooled down. Fuel tank cap should be always tightly closed. Fuel tank cap should be removed only to fill tank with fuel.
  • Page 36 6. PREPARATION FOR OPERATION Engine oil Refill the 2-stroke engine oil to the oil tank. * Fill the oil tank with the engine oil until “F” level. If the engine oil is not enough filled. CAUTION The warning buzzer sounds, ( switch “F”...
  • Page 37 6. PREPARATION FOR OPERATION Drain valves Make sure the all drain valves are closed. Close Drain valve Close (For ball cock discharge valve) Drain valve Close Open Discharge valve Make sure the discharge valve is closed. In the case of ball cock discharge valve type, also close Close the drain cock.
  • Page 38 6. PREPARATION FOR OPERATION Overheat protection sensor When you turn on the overheat sensor switch, this device shuts down the engine automatically when the engine has excessively overheated caused by lack of cooling water. Usually turn on the overheat sensor switch. Overheat sensor switch Overheat warning lamp If the temperature of the cooling water reaches...

  • Page 39: Use Of Operation Panel

    7. USE OF OPERATION PANEL If all the warning lamps are off, each function is working properly. * Countermeasure (Warning lamps turn ON) It is necessary to take a countermeasure if the lamp lights up when turning the main switch Then take countermeasure...
  • Page 40 7. USE OF OPERATION PANEL Remedy A: Supply fuel. B: Supply 2 stroke engine oil. C: Read the TROUBLE SHOOTING and remedy it. In the case of overheat Check the cause and remedy it. Turn off the overheat sensor switch and start the engine. After confirming the lamp is off, return the switch to the "ON"...
  • Page 41 7. USE OF OPERATION PANEL Hour meter (1) The hour meter starts counting when the main switch is turned “ON” position. (2) The hour meter only works during the main switch is “ON” position. (3) There is no reset capability. (4) The hour meter covers a time 0.1 hour to 9,999 hour, and it rolls over to 0 when it reaches maximum range.

  • Page 42: Starting The Engine

    8. STARTING THE ENGINE Installation of pump Since the temperature around the engine become WARNING high because of the muffler and exhaust gas, install the pump on level ground at least three meters away from inflammable materials including dry grass and wood. Exhaust gas, which contains carbon monoxide, is a deadly poisonous gas with no color and no smell.
  • Page 43 8. STARTING THE ENGINE Starting engine CAUTION Wear proper hearing protection during operation. While engine is running, do not touch the high voltage Ignition wire attached to spark plug. This wire carries very high voltage which will cause injury and bodily harm. Do not operate pump on dry grass.
  • Page 44 8. STARTING THE ENGINE 2. Turn the throttle dial to the “START･SUCTION” START・SUCTION position. 3. Turn the main switch to the “START” position. Release the main switch immediately after the engine starts. Release 1. Extended operation of the starter motor will run the battery drain. NOTE Operate the starter motor for maximum 3 seconds.
  • Page 45 8. STARTING THE ENGINE Starting engine by manual operation (Using a recoil starter) If electric starter does not work, use a manual starter. When you use the manual starter, operate the engine as shown below. 1. Turn the fuel valve to open position, this will allow Fuel valve fuel to flow to the carburetor.
  • Page 46 8. STARTING THE ENGINE Dry operation This portable pump has an outside water cooling system, limit the duration of dry operation so that it is within the following time periods. Performing dry operation longer than the specified time period may cause damage to the engine or pump.

  • Page 47: Prime And Discharge

    9. PRIME AND DISCHARGE While the engine is running, do not touch the WARNING rotating parts of the pulley or belt. This can cause personal injuries. If the pump cannot suck water during the NOTE operation of the vacuum pump for 30 seconds, or cannot keep the water in the water path of the pump during the water discharge operation, check the following:...
  • Page 48 9. PRIME AND DISCHARGE Limit the vacuum pump operating time within 30 seconds. If the NOTE pump cannot suction water within 30 seconds, it may have another problem. Refer to “Chapter 16 TROUBLESHOOTING” to rectify the problem. When priming water from a water source that is considerably lower ・...
  • Page 49 9. PRIME AND DISCHARGE Before opening water discharge port ・ CAUTION or valve of the pump, make sure to warn the person holding the nozzle or the branch pipe to check the nozzle is opened and ready to discharge water. During operation, check the suction and discharge hoses.
  • Page 50 9. PRIME AND DISCHARGE (When using water from fire hydrant) Performing relayed water supply 1. Decide the pump pressure in consideration of the water discharge pressure (nozzle pressure), hose pressure loss, and height loss. Pump pressure = needed pressure + friction loss + height loss 2.
  • Page 51 9. PRIME AND DISCHARGE Relay pumping operations In the case of relay pumping operations training in a flat place, if ・ CAUTION the number of extending hose is less than ten, use the safety nozzle （Pumping plate）attached. Discharge port adapter Packing Pumping plate (Standard accessory)
  • Page 52 9. PRIME AND DISCHARGE Preparation for operation Do not close the discharge valve of source pump, relay pumps ・ WARNING and fire nozzle. If the discharge valves or nozzle are (is) closed, there will be a risk of damage to the pumps and hoses with excessive pressure or water hammer.
  • Page 53 9. PRIME AND DISCHARGE Start the Relay pump 1. Make sure that the discharge valve is opened and wait for supplied water. 2. Check that the water was supplied from the source pump. At first, the hose swells due to air pressure. Step on a hose to judge whether the swelling of the hose is due to water or air.

  • Page 54: Stopping The Engine

    10. STOPPING THE ENGINE 1. Return the throttle dial to “LOW” position. 2. Close the discharge valve. Close Screw down discharge valve ______________________ Turn the discharge valve handle to the left (Clockwise). Ball cock discharge valve _________________________ Turn the discharge valve handle to close. Close The discharge port can be turned approximately 90 degrees.

  • Page 55: Maintenance After Operation

    11. MAINTENANCE AFTER OPERATION Drain Water 1. Open the drain valves and drain all the water Close from the pump. Do not leave water in the pump. Drain valve Open 2. Close the drain valves for the next operation. Close Open For ball cock discharge valve Close...
  • Page 56 11. MAINTENANCE AFTER OPERATION Original position 4. After a vacuum is produced, return the priming lever to the original position immediately, and stop the Start position engine. Priming lever 5. Check the vacuum pressure of the pressure gauge for suction is below -0.08 MPa (-12 psi). 6.
  • Page 57 11. MAINTENANCE AFTER OPERATION Fuel／Oil 1. Fuel Close the fuel valve and fill fuel until the maximum ・ level of the fuel tank. The maximum level can be confirm by the Indicator (Red) . * Fuel tank capacity : 18L (4.76 gal(US)) Draining fuel from the carburetor.
  • Page 58 11. MAINTENANCE AFTER OPERATION 2. Engine oil Fill the oil tank with 2-stroke engine oil up to the “F” level. Engine oil tank capacity: 1.6L (0.42 gal(US)) Use 2-stroke engine oil of ISO FB ・ NOTE “F” level grade or higher. 3.
  • Page 59 11. MAINTENANCE AFTER OPERATION Cleaning strainer for prime Remove the strainer cap and clean the strainer with fresh water. If the strainer is dirty with dust, etc., vacuum performance efficiency will be reduced. When installing strainer, ・ CAUTION exercise care so that the O-ring does not get caught in, and tighten the ring nut securely.
  • Page 60 11. MAINTENANCE AFTER OPERATION Charging battery <Battery> Read the safety instructions carefully and/or warnings before ・ WARNING using or charging the batteries. Hydrogen gases from the battery are explosive. Keep battery ・ away from flame and sparks. Charge the battery in well ventilated area. Do not charge battery ・...
  • Page 61 11. MAINTENANCE AFTER OPERATION 1. Be sure to charge the battery after each operation. Battery charger plug socket location 2. Turn off the main switch. 3. Confirm that there is no dirt, no slack, no backlash of the terminal. 4. Plug the charging plug to the battery charger plug socket.

  • Page 62: Maintenance In Cold Condition

    12. MAINTENANCE IN COLD CONDITION Infuse anti-freezing fluid If the temperature around the pump could be subzero, the inside CAUTION of the pump can be frozen up. In this case, the pump or the vacuum pump may not be operated, and also the pump unit including engine and muffler, may be damaged or broken.
  • Page 63 12. MAINTENANCE IN COLD CONDITION 4. Attach the plastic tube to the pump drain valve and open the valve at the pump case. 5. Insert the plastic tube in the container filled with antifreeze fluid. (180 mL/0.048 gal(US) – 200 mL/0.053 gal(US)). Antifreeze fluid START・SUCTION 6.
  • Page 64 12. MAINTENANCE IN COLD CONDITION 9. Return the throttle dial to “LOW” position. Throttle dial 10. Turn off the main switch. Main switch 11. Close the fuel valve (cock). Close <For discharge valve> Fill antifreeze fluid into the seal area of the discharge valve.
  • Page 65 12. MAINTENANCE IN COLD CONDITION <For primer> 1. Remove the strainer and strainer cup. 2. Inject antifreeze (undiluted 50 mL / 0.01gal) into the strainer guide. 3. After injection, assemble the strainer. When assembling or disassembling the NOTE Ring nut strainer assembly, tighten or loosen the ring nut while holding and pushing the strainer cap.
  • Page 66 12. MAINTENANCE IN COLD CONDITION Battery As the temperature decreases, battery performance decreases. Also, if the specific gravity is low, the battery may freeze. ・ Hydrogen gas from a battery is explosive. Keep the battery away from flames and sparks. Hydrogen gases emitted from the battery will also cause severe burn to skin and damage to clothing.

  • Page 67: Use Of Accessory

    13. USE OF ACCESSORY Pumping plate ・ When you use the fire pump without a nozzle as a water lifting CAUTION pump, such as pumping water out of a cellar, put the pumping plate* with holes in between the discharge port adapter screw and the bracket packing in order to prevent overheating of the engine and also to prevent cavitation in the pump which may cause damages to the pump.

  • Page 68: Periodical Inspection

    14. PERIODICAL INSPECTION Pay serious attention to keep the pump in a good condition. 1. To store a fire pump properly: ・ Place it in a level place. ・ Keep it in a dry area. High humidity may cause corrosion in some parts of the pump.
  • Page 69 14. PERIODICAL INSPECTION Perform periodical inspections and maintenance according to the following procedures. Inspection intervals Description Inspection items Measure Impurities (ie. Water and/or Clean*1 ● waste) Level Refuel ● Fuel*2 Preservation (Tank) period 6 month or Replace*1 ● more Degradation Replace*1 Fuel ●...
  • Page 70 14. PERIODICAL INSPECTION Inspection intervals Description Inspection items Measure Battery Voltage measure Charge ● Starting (Sealed Replace system Period of use ● type) *1 *3 Wear, crack, belt, V-Belt Replace*1 ● tension Clogging or Clean Strainer ● broken mesh replace*1 Locked or not, Replace Priming...

  • Page 71: Service And Maintenance

    When replacing parts as part of servicing and maintenance of this fire pump, use only Tohatsu genuine parts. If genuine Tohatsu parts and accessories are not used it may adversely affect the function and safety of the fire pump. Therefore, for safety reason, use only Tohatsu genuine parts.
  • Page 72 15. SERVICE AND MAINTENANCE Cowl removal and installation Cowl removal Front Unlock knobs (wing screws) at two places. Turn the knobs to left one quarter turn. Knob Front cowl Remove the cowl slowly, with care given to the area which would be contacted with the vacuum pump tension handle.
  • Page 73 15. SERVICE AND MAINTENANCE Pass the spark plug caps through the holes for the leads. Remove the cowl from the pins. Remove the cowl Remove the front cowl first, and the NOTE rear cowl second. Cowl installation Assembly order is in reverse order of the opening. Set the cowl Rear Put the cowl as shown in the picture.
  • Page 74 15. SERVICE AND MAINTENANCE Front Set the cowl from upper side as shown in the picture. The hooks are located in 2 places. The hooks must be aligned to the sockets of the grommet before insert. Lock the knobs (wing screws) at two locations. Turn the knobs to right one quarter turn.
  • Page 75 15. SERVICE AND MAINTENANCE Vacuum pump strainer Maintenance Incorrect installation of the strainer NOTE may cause a vacuum leak. Be sure to install the strainer correctly. Refer to “Chapter 11 MAINTENANCE AFTER OPERATION” Wash the strainer with fresh water after each use. Turn the ring nut while holding the strainer cup.
  • Page 76 15. SERVICE AND MAINTENANCE Governor oil Check the governor oil level Governor oil gauge Check the governor oil level every three months or every 50 hours operating time. Place the pump in a horizontal location. Pull out the oil dipstick, wipe it with a cloth. Insert the oil dipstick completely.
  • Page 77 15. SERVICE AND MAINTENANCE Spark plug 1. Remove the plug cap, and remove the spark plug. Plug cap Spark plug Electrode 2. Use a wire brush or spark plug cleaner to clean the electrode of the spark plug. 3. Check the spark plug for excessive carbon deposits, Washer electrode erosion and check the washer for damage.
  • Page 78 15. SERVICE AND MAINTENANCE Battery General safety information Follow the safety instructions on the battery. When charging batteries, highly explosive oxyhydrogen gas mixture is generated. Do not charge the battery in a poorly ventilated place. Do not smoke near the battery. Avoid injury caustic...
  • Page 79 15. SERVICE AND MAINTENANCE Electric equipment Only expert electricians or trained staff members should handle electrical equipment. Be sure to disconnect battery cables before handling electrical equipment. Disconnect the negative terminal first, disconnect the positive terminal next. When connecting battery cables, connect the positive terminal first, connect the negative terminal next.
  • Page 80 15. SERVICE AND MAINTENANCE Suction performance check Limit continuous operating time of the vacuum pump to 30 CAUTION seconds or less. Operating the pump for 30 seconds or more continuously may cause the engine to overheat. If the engine overheats, wait until it cools down. 1.
  • Page 81 15. SERVICE AND MAINTENANCE Water leak check 1. Connect one end of the suction hose to the suction port. Place the other end of the hose into the water more than 300mm (11.8 in) from the surface, and then close the discharge valve handle.

  • Page 82: Troubleshooting

    16. TROUBLESHOOTING Typical causes of engine troubles are listed in the following table. Trouble Action Cause Out of fuel Refuel. ● ● ● Deterioration of Replace with ● ● ● ● ● fuel new fuel. Fuel filter Clean out ● ●...
  • Page 83 16. TROUBLESHOOTING Trouble Action Cause Out of fuel Refuel. ● Replace with new Deterioration of fuel ● fuel. Fuel filter clogging Clean out clogging. ● Fuel pipe kink or snap Fix routing of pipe. ● Clean or replace with new Carburetor ●...
  • Page 84 16. TROUBLESHOOTING Trouble Action Cause Spark plug cap Plug in surely. ● ● ● ● comes off Use of Replace with unspecified spark specified spark ● ● ● ● ● ● plug plug. Spark plug fouling Clean or replace (No spark or weak with specified ●...
  • Page 85 16. TROUBLESHOOTING Trouble Action Cause Spark plug cap comes Plug in surely. ● Replace with Use of unspecified specified spark ● spark plug plug. Clean or replace Spark plug fouling (No with specified spark ● spark or weak spark) plug. Clean terminal Battery loose and/or tighten a...
  • Page 86 16. TROUBLESHOOTING Trouble Action Cause Replace with spare fuse. When the blowout of the 15A fuse blown fuse happens ● repeatedly, check a cause. 15A: Battery cable reverse connection, operation panel components 5A fuse blown 5A: Charging ● connector and Floodlight connector.
  • Page 87 16. TROUBLESHOOTING Trouble Action Cause Replace with spare fuse. When the blowout of the fuse happens 15A fuse blown ● repeatedly, check a cause. 15A: Battery cable reverse connection, operation panel components 5A: Charging 5A fuse blown ● connector and Floodlight connector.
  • Page 88 16. TROUBLESHOOTING Trouble Action Cause Piston, piston ring Correct or or cylinder ● ● ● ● ● replace. excessively worn Carbon deposition in the Clean out. ● ● ● combustion chamber Place pump near Suction height water source too high and/or and lower length too long position.
  • Page 89 16. TROUBLESHOOTING Trouble Action Cause Piston, piston ring or ● cylinder excessively Correct or replace. worn Carbon deposition in ● the combustion Clean out. chamber Place pump near Suction height too high ● water source and and/or length too long lower position.
  • Page 90 16. TROUBLESHOOTING Trouble Action Cause Tighten securely Vacuum pipe a clump of loose or cracking vacuum pipe or replace. Strainer cap Tighten securely loose or “O” ring or replace. failure V-belt damaged Replace. or worn Repair or Vacuum pump rotor shaft seizing replace.
  • Page 91 16. TROUBLESHOOTING Trouble Action Cause Tighten securely a Vacuum pipe loose or ● ● clump of vacuum cracking pipe or replace. Strainer cap loose or Tighten securely or ● ● “O” ring failure replace. V belt damaged or ● ● Replace.
  • Page 92 16. TROUBLESHOOTING Trouble Action Cause Drain valve is not Close securely. closed Suction port strainer clogged Clean out. with dead leaf or waste etc. Discharge valve ● ● Open securely. imperfect open Gauge pipe Tighten securely. connector loose Replace gasket if or gasket necessary.
  • Page 93 16. TROUBLESHOOTING Trouble Action Cause Drain valve is not ● ● ● Close securely. closed Suction port strainer ● ● clogged with dead leaf Clean out. or waste etc. Discharge valve ● Open securely. imperfect open Gauge pipe connector Tighten securely. ●...
  • Page 94 16. TROUBLESHOOTING Trouble Action Cause Change nozzle Too large for suitable size ● ● discharge nozzle or incorporate diameter safety nozzle. Spray nozzle Clean out. clogged Governor Readjust it adjustment out of ● ● securely. specified range Attach it Governor link ●...
  • Page 95 16. TROUBLESHOOTING Trouble Action Cause Change nozzle for Too large discharge suitable size or ● nozzle diameter incorporate safety nozzle. ● Spray nozzle clogged Clean out. Governor adjustment Readjust it securely. ● out of specified range Governor link ● ● ●...

  • Page 96: Appendix

    17. APPENDIX Tightening torque specifications. N･m Standard Bolt lb･ft kgf･m 0.07 0.16 N･m Heat Treated Bolt lb･ft kgf･m...

  • Page 97: Tool And Standard Accessory

    18. TOOL AND STANDARD ACCESSORY Description Remarks Quantity Owner’s manual Tool kit bag Tools (Crown spanner 21mm) General tool Tools (Handle for spanner) General tool Spark plug BPR7HS－10 Pumping plate Battery charger Fuse Pipe...

  • Page 98: Wiring Diagram

    19. WIRING DIAGRAM ← 〇 〇 〇 〇 〇 〇 〇...
  • Page 99 19. WIRING DIAGRAM ← 〇 〇 〇 〇 〇 〇 〇...
  • Page 100 OW N E R’S M A N UA L VC52AS VC72AS PORTABLE FIRE PUMP No.003-12054-3 5-4, Azusawa 3-Chome, Itabashi-Ku Tokyo 174-0051, Japan Phone : +81-3-3966-3137...

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