TOHATSU M 40D2 Owner's Manual
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TOHATSU M 40D2 Owner's Manual

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O W N E R' S
M A N U A L
トーハツ船外機 オーナーズマニュアル
Original instructions
M 40D
2
M 50D
2
OB No.003-11038-JBA1

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  • Page 1 O W N E R’ S M A N U A L トーハツ船外機 オーナーズマニュアル Original instructions M 40D M 50D OB No.003-11038-JBA1...
  • Page 2 MANUAL IN A SAFE LOCATION FOR FUTURE REFERENCE. Copyright © 20 1 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 ENOM00006-A To You, Our Customer Thank you for selecting a TOHATSU outboard motor. You are now the proud owner of an excellent outboard motor that will service you for many years to come. This manual should be read in its entirety and the inspection and maintenance proce- dures described later in this manual should be followed carefully.
  • Page 4 ENOM00113-0 EC DECLARATION OF CONFORMITY (DoC) This product conforms to certain portion of the European Parliament directive. DoC contains the following information; Name and Address of the manufacturer. Applied community directives Reference standard Description of the product. (Model name and serial number) Signature of the responsible person (Name / Title / Date and place of issue).
  • Page 5 ENOM00007-0 NOTICE: DANGER/WARNING/CAUTION/Note Before installing, operating or otherwise handling your outboard motor, be sure to thor- oughly read and understand this Owner's Manual and carefully follow all of the instruc- tions. Of particular importance is information preceded by the words “DANGER,” “WARNING,”...

  • Page 7: Table Of Contents

    CONTENTS 1. GENERAL SAFETY INFORMATION ........10 2.
  • Page 8 11. TROUBLESHOOTING ..........83 12.
  • Page 9 INDEX 1. GENERAL SAFETY INFORMATION 2. SPECIFICATIONS 3. PARTS NAME 4. LABEL LOCATIONS 5. INSTALLATION 6. PRE-OPERATING PREPARATIONS 7. ENGINE OPERATION 8. REMOVING AND CARRYING THE OUTBOARD MOTOR 9. ADJUSTMENT 10. INSPECTION AND MAINTENANCE 11. TROUBLESHOOTING 12. TOOL KIT AND SPARE PARTS 13.

  • Page 10: General Safety Information

    GENERAL SAFETY INFORMATION ENOM00009-0 SAFE OPERATION OF BOAT As the operator/driver of the boat, you are responsible for the safety of those aboard and those in other boat around yours, and for following local boating regulations. You should be thoroughly knowledgeable on how to correctly operate the boat, outboard motor, and accessories.
  • Page 11 GENERAL SAFETY INFORMATION ENOM00010-0 SERVICING, REPLACEMENT PARTS & LUBRICANTS We recommend that only an authorized service shop perform service or maintenance on this outboard motor. Be sure to use genuine parts, genuine lubricants, or recom- mended lubricants. ENOM00011-A MAINTENANCE As the owner of this outboard motor, you should be acquainted with correct mainte- nance procedures following maintenance section of this manual (See page 64).

  • Page 12: Specifications

    SPECIFICATIONS ENOM00810-B MODEL FEATURE Model M40D2 M50D2 Type EFTO EPTO EFTO EPTO Transom heights Tiller Handle Remote Control Multi-function tiller handle Power Tilt Gas-assisted tilt Manual tilt *1: Option ENOM00811-B MODEL NAME EXAMPLE M50D2 MFL Horse Product Model descrip- Minor Starter Steering Lubrication...
  • Page 13 SPECIFICATIONS ENOM01650-0 40D2 50D2 MF 40D2 50D2 Item MODEL Overall Length mm (in) 1143 (45.0) Overall Width mm (in) 384 (15.1) S mm (in) 1225 (48.2) Overall Height L mm (in) 1352 (53.2) S mm (in) 403 (15.9) Transom Height L mm (in) 530 (20.9) S kg (lb)
  • Page 14 SPECIFICATIONS 40D2 50D2 Item MODEL Operator Sound Pressure 91.2 (ICOMIA 39/94) dB (A) Hand Vibration Level (ICOMIA 38/94) m/s Remark: Specifications subject to change without notice. Tohatsu outboard is power rated in accordance with ISO8665 (propeller shaft output).
  • Page 15 Gear Reduction Ratio 1.85 (13 : 24) Operator Sound Pressure 91.2 (ICOMIA 39/94) dB (A) Hand Vibration Level – (ICOMIA 38/94) m/s Remark: Specifications subject to change without notice. Tohatsu outboard is power rated in accordance with ISO8665 (propeller shaft output).

  • Page 16: Parts Name

    PARTS NAME ENOM01653-0 40D2MF/50D2MF ENOF1902-0 1 Tilt Handle 10 Oil Plug (lower) 19 Starter Handle 2 Top Cowl 11 Water Strainer 20 Stop Switch 3 Hook Lever 12 Oil Plug (upper) 21 Choke Knob 4 Water Check Port 13 Clamp Bracket 22 Anode 5 Reverse Lock Lever 14 Thrust Rod...
  • Page 17 PARTS NAME ENOM01656-0 40D2EFTO/50D2EFTO ENOF01952-0 1 Tilt Handle 12 Water Strainer 23 Pilot Lamp 2 Top Cowl 13 Oil Plug (upper) 24 Main Switch 3 PTT Switch 14 Clamp Bracket 25 Battery Cords 4 Hook Lever 15 Thrust Rod 26 Power Trim & Tilt 5 Water Check Port 16 Clamp Screw 27 Anode...
  • Page 18 PARTS NAME ENOM01657-0 40D2EPO/50D2EPO ENOF01953-0 1 Tilt Handle 11 Water Strainer 21 Oil Tank 2 Top Cowl 12 Oil Plug (upper) 22 Fuel Filter 3 Hook Lever 13 Clamp Bracket 23 Spark Plug 4 Water Check Port 14 Thrust Rod 24 Oil Filter 5 Reverse Lock Lever 15 Clamp Screw...
  • Page 19 PARTS NAME ENOM01658-0 40D2EPTO/50D2EPTO ENOF01954-0 1 Tilt Handle 10 Propeller 19 Battery Cords 2 Top Cowl 11 Oil Plug (lower) 20 Power Trim & Tilt 3 PTT Switch 12 Water Strainer 21 Anode 4 Hook Lever 13 Oil Plug (upper) 22 Oil Tank 5 Water Check Port 14 Clamp Bracket...
  • Page 20 PARTS NAME ENOM00822-0 Remote control box & Fuel tank ENOF00127-F2 Control Lever Fuel Gauge Neutral Lock Arm Air Vent Screw PTT Switch Fuel Tank Cap Free Throttle Lever Fuel Connector (Engine Main Switch side) Stop Switch Primer Bulb Stop Switch Lock Fuel Connector (Fuel tank Stop Switch Lanyard side)

  • Page 21: Label Locations

    LABEL LOCATIONS ENOM01659-0 Warning label locations 1, 2 ENOF01955-5...
  • Page 22 LABEL LOCATIONS 1, 3. Read owner's manual. For RC model Be sure to fasten one end of the stop switch lanyard to your body during operation. 3F0X72185-0 Engine stop switch. (See page 44). ENOF00008-1 Warning regarding gasoline (See page 30). ENOF00131-B HOT SURFACE Can cause burns.
  • Page 23 LABEL LOCATIONS Warning regarding gasoline (See page 30). ENOF00005-M Warning regarding gasoline (See page 30). ENOF00005-F...
  • Page 24 LABEL LOCATIONS ENOM01001-0 Serial number label locations ENOF01904-2 1. Model code (Model name) 2. Serial No. 3. Rated power 4. Dry mass weight 5. Manufacturer name 6. Manufacturer address 7. Authorised representative 8. Authorised representative address Description of serial number year code Last two digits of alphabet represent production year as below.

  • Page 25: Installation

    INSTALLATION ENOM00024-A ENOW00009- 1. Mounting the outboard WARNING motor on boat Mounting the outboard motor without following this manual can lead to unsafe conditions such as poor maneuverability, ENOW00006-B lack of control or fire. WARNING Loose clamp screws and/or mounting bolts can lead to the release or displace- Before installing the outboard motor on the ment of the outboard motor, possibly...
  • Page 26 INSTALLATION attitude. Check the position of water sur- ENOM01201-0 face on the driveshaft housing. If the Twin-engine Installation water surface is near the bottom cowling, When installing two outboard engines, be in high waves, water may enter the engine sure to keep an interval of approximately cylinders.
  • Page 27 INSTALLATION ENOF00612-1 ENOF00610-0 1. Bolt (12 mm × length 105 mm) 1. Clamp Screw 2. Washer (large diameter) 2. Washer (small diameter) 3. Washer (small diameter) 3. Washer (large diameter) 4. Nylon locking nut 4. Bolt (12 mm × length 105 mm) 5.

  • Page 28: Battery Installation

    INSTALLATION Tighten the bolts sufficiency, otherwise Place the battery away from any source of falling down of outboard could be hap- fire, sparks and open flames such as pened. burners or welding equipment. Do not smoke near the battery when the battery is charging.
  • Page 29 INSTALLATION * The battery should be purchased sepa- rately and is not supplied with the out- board motor. 1. Place the battery box in a convenient position away from possible water spray. Securely fasten both the box and the battery so they do not shake loose.

  • Page 30: Pre-Operating Preparations

    ENOM00032-A GASOLINES CONTAINING CAUTION ALCOHOL When operating a TOHATSU engine on gaso- The fuel system components on your line containing alcohol, storage of gasoline in TOHATSU engine will withstand up to 10% the fuel tank for long periods should be ethyl alcohol (here in after referred to as avoided.

  • Page 31: Fuel Filling

    PRE-OPERATING PREPARATIONS protective oil films from internal compo- Be sure to remove the static electricity nents. charged in your body before refueling. The sparks due to static electricity may cause explosion of flammable gasoline. ENOW00018-0 Stop the engine, and do not start the WARNING engine during refueling.

  • Page 32: Engine Oil Recommendation

    PRE-OPERATING PREPARATIONS ENOF00027-B 1. Air vent screw 2. Fuel tank cap ENOF01963-0 2. Open the fuel tank cap slowly. 1. Genuine of recommended engine oil 3. Fill the fuel carefully not to over flow. 2. Filler lid 3. Oil tank cap ENOW0002A-A CAUTION Use of engine oils that do not meet these...
  • Page 33 PRE-OPERATING PREPARATIONS Pre-mixing type When portable fuel tank is used for Add engine oil into fuel oil tank. The mix- operation of outboard motor(s): ing ratio with gasoline is 50 : 1 (50 parts Pour engine oil into fuel tank, and then, gasoline.
  • Page 34 PRE-OPERATING PREPARATIONS Pour engine oil into fuel container, and During break-in then, gasoline. Add engine oil into fuel tank. The mixing Put cap on the container, and close ratio with gasoline during break-in is 50:1 tightly. (50 parts oil and one part gasoline). Mix Shake the container to mix engine oil well by hand.
  • Page 35 PRE-OPERATING PREPARATIONS ENOM00645-0 Oil pump air vent Visually check whether there is air in the oil through the vinyl pipe connecting the oil tank with the oil pump. If present, Purge the air as follows: Loosen the air vent screw on the oil pump to purge the air, and tighten it when all air, as seen through the vinyl pipe on the oil pump side, has been...

  • Page 36: Break-In

    PRE-OPERATING PREPARATIONS ENOM00033- 4. Break-In Your new outboard motor and lower unit If any abnormality is experienced during the break-in: require break-in for the moving compo- Discontinue the operation immediately. nents a ccording to the conditions Have the dealer check the product and described in the following time table.

  • Page 37: Warning System

    PRE-OPERATING PREPARATIONS ENOM00039-0 5. Warning system If outboard motor encounters an abnor- mal condition of fault, the warning buzzer will emit a continuous beep or intermit- tent short beeps and the warning lamp (LED) will synchronize with the buzzer and engine speed will be limited (engine will ENOF01957-0 not be stopped).
  • Page 38 PRE-OPERATING PREPARATIONS ENOM00041-D Warning indicators, faults and remedy Warning indicators Description of faults Remedy Sound High Lamp speed speed Engine speed exceeds Continuous*1 maximum allowable min (rpm) Low oil level Continuous*1 Over heating Continuous*2 *1 Remote control type only *2 Option High speed ESG (Electronic Safety Governor) High speed ESG is a device to prevent over revolution of the engine.
  • Page 39 PRE-OPERATING PREPARATIONS Remedy Reduce the throttle to less than half opening, and move to safe place quickly, and stop the engine. Check the propeller for bent or dam- aged blades. Consult an authorized dealer if engine shows the same result even after replacing propeller with new one.

  • Page 40: Engine Operation

    ENGINE OPERATION ENOM00042-0 ENOM00656-A Before starting 1. Engine oil feeding ENOW00022-C When the engine is new or have been left CAUTION without operation for a long time, or just after the engine is overhauled, be sure to The engine oil is drained for shipping from execute the following operation for the factory.

  • Page 41: Fuel Feeding

    ENGINE OPERATION 2. Open the fuel tank cap slowly and release internal pressure completely. After that, close the fuel tank. 3. Connect the fuel connector to the engine and fuel tank. ENOF00652-B 1. Rod snap 2. Control lever 3. Open side position ENOF01905-0 4.

  • Page 42: Starting The Engine

    ENGINE OPERATION Do not squeeze primer bulb with engine ENOW00036-0 running or when the outboard motor is CAUTION tilted up. Otherwise, fuel could overflow. Be sure to stop engine immediately if cooling ENOM00045-A water check port is not discharging water, 3.
  • Page 43 ENGINE OPERATION 3. Set the throttle grip to START posi- ENOM01662-0 Tiller handle type tion. 1. Be sure to install the stop switch lock to the stop switch, and attach the stop switch lanyard securely to the operator or to the operator's PFD (Personal Flotation Device.) ENOF01908-1 1.
  • Page 44 ENGINE OPERATION (For manual starter type) 6. Return the choke knob fully after engine has started. 4. Pull the starter handle slowly until you feel engagement, keep pulling till you 7. Check the cooling water from cooling feel less resistance. Then pull it water check port.
  • Page 45 ENGINE OPERATION 4. Raise the free accel lever a little (both ENON00035-A Note of cold engine and warm engine). The free throttle lever can not be raised ENON00504-0 when the control lever shift is in Forward Note or Reverse. The free accel lever can not be raised when the control lever shift is in Forward or Reverse.
  • Page 46 ENGINE OPERATION 1. Remove the top cowl. 4. Insert the knotted end of the starter rope into the notch in the flywheel and wind the rope around the fly- wheel several turns clockwise. ENOF01961-0 ENOF01345-0 2. Remove starter lock cable from recoil 5.

  • Page 47: Warming Up The Engine

    ENGINE OPERATION 8. Pull the starter handle slowly until you ENOM00044-A Engine speeds feel engagement, keep pulling till you Idling speed after warming up. feel less resistance. Then pull it Clutch in (In gear) Clutch off (Out of gear) quickly. 750 min (rpm) 900 min...

  • Page 48: Forward, Reverse, And Acceleration

    ENGINE OPERATION ENOM00046-A ENOW00861-0 5. Forward, reverse, and WARNING acceleration Do not shift at high boat speed, or control may be lost, falling down or causing passen- ENOW00037-0 ger(s) to be thrown overboard. Leading to serious personal injury. WARNING Before shifting into forward or reverse, make ENOW00862-0 sure that boat is properly moored and out- CAUTION...
  • Page 49 ENGINE OPERATION ENOM00890-A Tiller handle type ENOW00865-A CAUTION Do not force to shift when the throttle grip is not in the fully closed position, otherwise, steering system and/or shifting mechanism may be damaged. ENOW00867-0 WARNING ENOF01916-0 1. Shift lever Sudden acceleration and deceleration may 2.

  • Page 50: Stopping The Engine

    ENGINE OPERATION Forward ENOM00049-A 1. Quickly push the control lever to the 6. Stopping the engine Forward (F) position 32°, where the gear is connected, while lifting up on ENOW00868-0 the lock button located under the WARNING control lever grip. Be careful not to remove engine stop switch 2.
  • Page 51 ENGINE OPERATION ENOF00871-1 1. ON 2. START ENOF01958-0 3. OFF 1. ON 2. START ENOW00869-0 3. OFF WARNING Side mount RC type After stopping the engine: 1. Put the control lever in the Neutral Close the air vent screw on the fuel tank position and run the engine for 2-3 cap.

  • Page 52: Steering

    ENGINE OPERATION ENOM00920-0 7. Steering ENOW00870-0 WARNING Sudden steering may cause passenger(s) to be thrown overboard or falling down. Tiller handle type Right turn Move the tiller handle to the left ENOF00869-A Left turn 1. Stop switch Move the tiller handle to the right. 2.

  • Page 53: Trim Angle

    ENGINE OPERATION ENOM00050-0 8. Trim angle ENOW00043-A WARNING Adjust the trim angle when the engine is stopped. ENOF00051-1 Do not put hand or finger in between out- 1. Perpendicular to the water surface board motor body and clamp bracket when adjusting trim angle to prevent ENOM00053-0 injury in case the outboard motor body Improper trim angle (bow rises too...
  • Page 54 ENGINE OPERATION Manual Tilt type 4. Remove the thrust rod as show pic- ture. ENOF00674-A ENOF01238-1 1. Thrust rod 1. Push in 2. Higher 2. Rise the stopper 3. Lower 3. Pull out 5. Reinstall the thrust rod in the desired Power Trim &...

  • Page 55: Tilt Up And Down

    ENGINE OPERATION 6. Reinstall the thrust rod in the desired ENON00921-0 Note position securely. Before tilting the outboard motor up, after 7. Put the snap pin back and unlock the stopping the motor leave it in the running tilt stopper. position for about a minute to allow water 8.
  • Page 56 ENGINE OPERATION Now, lift up the outboard motor slightly, and then allow gravity to lower it for you. ENOF01318-0 1. Tilt stopper ENOF00059-0 The outboard motor can also be tilted up 1. Reverse lock lever and down using the switch provided 2.

  • Page 57: Shallow Water Operation

    ENGINE OPERATION ENOM00940-0 ENOM00068-A Manual relief valve 10.Shallow water operation If the battery is dead, and the power tilt switch thus inoperative, open the manual ENOW00051-0 valve completely in the Manual direction. WARNING This will allow manual tilting of the out- board motor.
  • Page 58 ENGINE OPERATION Manual tilt type ENOM0006A-0 Power Trim & Tilt type 1. Shallow water running position: 1. Operate the Power Tilt switch and tilt Put the reverse lock lever in the tilt up the outboard motor up into desired position, and tilt up the outboard shallow water running position.

  • Page 59: Removing And Carrying The Outboard Motor

    REMOVING AND CARRYING THE OUTBOARD MOTOR ENOM00070-A 1. Removing the outboard motor ENOW00890-A WARNING Before removing the outboard motor on the boat, hang the outboard motor with the hoist or equivalent device by attaching the engine hanger to the outboard. Use the hoist with allowable load is 250 kg (550 lbs) or above.

  • Page 60: Trailering

    REMOVING AND CARRYING THE OUTBOARD MOTOR ENOF00680-0 ENOF01727-0 ENOM00072-C 3. Trailering Keep the outboard motor in a vertical ENOW00072-0 position when carrying. CAUTION The optional outboard motor stand is recommended for keeping the outboard Trailering in the tilted position may cause motor vertical both during transport and damage to the outboard motor, boat, etc.
  • Page 61 REMOVING AND CARRYING THE OUTBOARD MOTOR intended to support the outboard motor while the boat is docked, beached, etc. When transporting a boat on a trailer with the outboard motor still attached, disconnect the fuel line from the out- board motor beforehand and keep the outboard motor in the normal running position or on a transom saver bar.

  • Page 62: Adjustment

    ADJUSTMENT ENOM00073-C ENOM00074-A 1. Steering friction 2. Throttle grip friction Tiller handle type ENOW00074-B WARNING ENOW00074-D WARNING Do not overtighten the throttle adjustment screw or it could result in difficulty of move- Do not over tighten the steering friction ment resulting in the loss of control causing adjustment bolt it could result in difficulty of an accident and could lead to severe injury.

  • Page 63: Trim Tab Adjustment

    ADJUSTMENT resulting in the loss of control causing an readjusting trim tab, check if steering fiction accident and could lead to severe injury. is even. To adjust the friction of the remote con- If straight-line cruising can not be trol lever, turn the throttle friction achieved, adjust the trim tab located adjustment screw on the front of the under the anti-ventilation plate.

  • Page 64: Inspection And Maintenance

    INSPECTION AND MAINTENANCE ENOM00077-0 Care of your outboard motor To keep your outboard motor in the best operating condition, it is very important that you perform daily and periodic maintenance as suggested in the mainte- nance schedules that follow. ENOW00077-0 CAUTION Your personal safety and that of your pas- sengers depends on how well you main-...

  • Page 65: Daily Inspection

    INSPECTION AND MAINTENANCE ENOM01664-0 1. Daily Inspection Perform the following checks before and ENOW00078-0 after use. WARNING Do not use outboard motor if any abnormal- ity is found during pre-operation check or it could result in severe damage to the motor or severe personal injury.
  • Page 66 INSPECTION AND MAINTENANCE ENOM00082-A Engine oil replenishing ENOW00079-A CAUTION Do not add engine oil of brand and grade other than existing one. In case engine oil of other brand or grade is added, drain all oil and ask dealer for treatment. In case other than engine oil such as gaso- line is put in the oil chamber, empty the chamber and ask dealer for treatment.
  • Page 67 INSPECTION AND MAINTENANCE Remove the flushing attachment and ENON00026-0 Note tape. After the flushing, be sure to It is recommended to check chemical reattach the water plug. properties of water on which your out- board motor is regularly used. If outboard motor is used in salt water, brackish water or water with a high acidic level, use fresh water to remove salt, chemicals or mud from exterior and...
  • Page 68 CAUTION If the fuse continues to blow, request an When the engine is started in the test tank, authorized Tohatsu dealer to inspect the to avoid over heating and water pump dam- outboard motor. age, be sure the water level is at least 10 cm 1.

  • Page 69: Periodic Inspection

    INSPECTION AND MAINTENANCE ENOM01006-0 2. Periodic Inspection It is important to inspect and maintain your outboard motor regularly. At each interval on the chart below, be sure to perform the indicated servicing. Maintenance intervals should be determined according to the number of hours or num- ber of months, whichever comes first.
  • Page 70 INSPECTION AND MAINTENANCE ENON00030-0 Note Your outboard motor should receive careful, and complete inspection at 300 hours. This is the best time for major maintenance procedures to be carried out. ENOM00093-A ENOM00094-0 Fuel filters and fuel tank cleaning Fuel filter (for engine) 1.
  • Page 71 INSPECTION AND MAINTENANCE 3. Remove the cup, filter and O-rings drop or fall of outboard motor could lead to severe personal injury. from the fuel filter body. Be sure to lock outboard motor if it is 4. Check the wear and clogging for each tilted up, or accidental fall of outboard parts, and replace if necessary.
  • Page 72 INSPECTION AND MAINTENANCE 3. Insert the oil tube nozzle into the lower oil plug hole, and fill with gear oil by squeezing the oil tube until oil flows out of the upper plug hole and bubbles is disappeared to remove the air.
  • Page 73 INSPECTION AND MAINTENANCE The propeller edge is thin and sharp. Wear the groves during replacement to protect your hands. ENOW00086-0 CAUTION Do not install propeller without thrust holder, or propeller boss could be dam- aged. ENOF01315-0 Do not reuse split pin. After installing split pin, spread the pin 1.
  • Page 74 INSPECTION AND MAINTENANCE ENOW00929-0 7. Install the spark plug by hand and turn CAUTION it carefully to avoid cross-threading. Use only the recommended spark plugs. 8. Tighten the spark plug to the speci- Spark plugs which have an different heat fied torque.
  • Page 75 INSPECTION AND MAINTENANCE ENOM00088-A Anode replacement A sacrificial anode protects the outboard motor from electrolytic corrosion. Anode is located on the gear case, cylinder etc.. When the anode is eroded more than 1/3 of original size, replace it. ENON00029-0 Notes Never grease or paint the anode.
  • Page 76 INSPECTION AND MAINTENANCE 1. Oil cap ENOM00089-B Power Tilt oil checking 2. Oil level ENOW00088-0 Recommended oil WARNING Use an automatic transmission fluid or equivalent. Be sure that outboard motor is secured to Recommended oils are as shown below. transom or service stand, or accidental ATF Dexron III drop or fall of outboard motor could lead to severe personal injury.
  • Page 77 INSPECTION AND MAINTENANCE ENOM00960-0 Grease point Apply water proof grease to the parts shown below. ENOF01928-0...

  • Page 78: Off-Season Storage

    INSPECTION AND MAINTENANCE 2. Remove the fuel hose from the out- ENOM00100-A 3. Off-season storage board motor. 3. Drain all fuel from the fuel hoses, fuel ENOW00934-0 pump, fuel filter (See page 70) and WARNING carburetor (See page 80), and clean these parts.
  • Page 79 INSPECTION AND MAINTENANCE 8. Stand the outboard motor up verti- cally in a dry place. ENOF00680-0 ENOM00950-A Adding a fuel stabilizer When adding a fuel stabilizer additive (commercially available), first fill the fuel tank with fresh oil and fuel. If the fuel tank is only partially filled, air in the tank ENOF01921-0 can cause the fuel to deteriorate during...
  • Page 80 INSPECTION AND MAINTENANCE 8. Check the drained fuel for the pres- ENOM00970-A Fuel system draining ence of water or other contaminants. ENOW00028-A If either is present, reassemble the WARNING outboard motor, refill the carburetor with fuel, and then drain the fuel For details on handling fuel, contact an again.

  • Page 81: Pre-Season Check

    INSPECTION AND MAINTENANCE 4. Charge the battery completely before 8. Run the engine for 10 minutes at half storing it for the winter. throttle. The oil used for storage inside the engine will be circulated 5. Recharge the battery once a month out to assure optimum performance.

  • Page 82: Striking Underwater Object

    INSPECTION AND MAINTENANCE the cooling water pump, which may dam- be sure that all engines are running. age the pump, impeller, etc. To avoid this If any engine has stopped, be sure to tilt problem, submerge the lower half of the the outboard motor up and keep its pro- outboard motor into the water.
  • Page 83 TROUBLESHOOTING ENOM01608-0 If you encounter problem with the engine, check the list below and locate the problem you are experiencing. Then follow the suggested remedies. Do not hesitate to contact your dealer, as professionals advice and assistance is the best way to keep the engine in optimum condition. Unstable Cannot Engine...
  • Page 84 TROUBLESHOOTING Unstable Cannot Engine engine Abnor- Abnor- Difficult obtain Over- starts. Poor running mally high mally low to start high heating of but stops idling speed or engine engine engine engine engine soon engine speed speeds speeds stops No sparks or weak sparks Insufficient cooling water flow...
  • Page 85 TOOL KIT AND SPARE PARTS ENOM01665-0 The followings are a list of the tools and spare parts provided with the motor. Name Quantity Remark Tool Bag Socket Wrench (21mm) Socket Wrench (10 x 13) Servicing Tools Socket Wrench Handle Pliers Screwdriver (Phillips-type and flat Adapter-type head)
  • Page 86 PROPELLER TABLE ENOM01610-0 To ensure optimum performance, the propeller should match the boat type and its load. Use a genuine propeller. A propeller must be selected so that the engine min (rpm) measured at wide open throttle, while cruising, is within the recommended range. 40D2, 50D2 5000 to 5800 min (rpm) 40 50...
  • Page 89 O W N E R’ S M A N U A L M 40D M 50D 5-4, Azusawa 3-Chome, Itabashi-Ku Tokyo 174-0051, Japan Tel: +81-3-3966-3117 Fax: +81-3-3966-0090 www.tohatsu.com...

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M 50d2

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