TOHATSU MFS 50A Owner's Manual
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TOHATSU MFS 50A Owner's Manual

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OWNER'S
MANUAL
MFS
40A
50A
OB No.003-11105-0

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Summary of Contents for TOHATSU MFS 50A

  • Page 1 OWNER’S MANUAL OB No.003-11105-0...
  • Page 2 INJURY OR DEATH. KEEP THIS MANUAL IN A SAFE LOCATION FOR FUTURE REFERENCE. Copyright © 2014 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: Limited Warranty

    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 procedures described later in this manual should be followed carefully.

  • Page 4: Serial Number

    ENOM00005-A Serial Number In the space below, please record the outboard motor's serial number (indicated both on the bottom cowl and on the cylinder block). The serial number will be needed when order- ing parts, and when making technical or warranty inquiries (P 93). Serial Number: ENOF00800-0 ENOF00801-0...
  • 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 GENERAL SAFETY INFORMATION ......10 1. SPECIFICATIONS ..........13 2.
  • Page 8 ENGINE LIMITED WARRANTIES ....... 93 2. TLDI TOHATSU OUTBOARD ENGINE 5 YEAR LIMITED WARRANTY . . 94 3.
  • Page 9 INDEX GENERAL SAFETY INFORMATION 1. SPECIFICATIONS 2. PARTS NAME 3. LABEL LOCATIONS 4. INSTALLATION 5. PRE-OPERATING PREPARATIONS 6. ENGINE OPERATION 7. REMOVING AND CARRYING THE OUTBOARD MOTOR 8. TRAILERING 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, out- board 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 recommended lubricants. ENOM00011-A MAINTENANCE As the owner of this outboard motor, you should be acquainted with correct maintenance procedures by following maintenance section of this manual (See page 64).
  • Page 12 Remote Control Power Trim & Tilt Gas-assisted tilt These models can be purchased with remote rigging kit or multi function tiller handle. ENOM00811-A MODEL NAME EXAMPLE MFS 50A ETL Model descrip- Product gener- Starter Horse power Tilt system Shaft length...

  • Page 13: Specifications

    SPECIFICATIONS ENOM00013-0 ET, EG MFS40A/50A ET (with EG (with Item MODEL multifunction multifunction (with RC) tiller handle) tiller handle) Overall Length mm (in) 783 (30.8) 1382 (54.4) 1382 (54.4) Overall Width mm (in) 404 (15.9) Overall Height S·L mm (in) 1257 (49.5) 1390 (54.7) Transom Height S·L mm (in)

  • Page 14: Emission Control System

    (ICOMIA 39/94 Rev.1) dB (A) Hand Vibration Level – (ICOMIA 38/94 Rev.1) m/sec2 Remark: Specifications subject to change without notice. *Without propeller, with battery cable. Tohatsu outboard is power rated in accordance with NMMA procedures and using the ICOMIA standard 28/23.

  • Page 15: Parts Name

    PARTS NAME ENOM00820-0 ET, EG (with multi-function tiller handle) Tilt Handle Tiller Handle Top Cowl Throttle Grip Bottom Cowl PTT Switch Cooling Water Warning Lamp Check Port Stop Switch Drive Shaft Stop Switch Housing Lanyard Anode Oil Filler Cap Trim Tab Spark Plug Propeller Oil Level Gauge...
  • Page 16 PARTS NAME ENOM00821-0 ET (with RC) Tilt Handle Anode Top Cowl Thrust Rod Bottom Cowl Clamp Bracket Cooling Water Oil filler Cap Check Port Spark Plug Drive Shaft Oil Level Gauge Housing Cowl Hook Lever Anode Idle Port Trim Tab Manual Valve Propeller Oil Filter...
  • Page 17 PARTS NAME ENOM00822-0 Remote control box & Fuel tank (optional part) ENOF00127-A Control Lever Fuel Gauge Neutral Lock Arm Air Vent Screw PTT Switch Fuel Tank Cap Free Throttle Lever Tab Lock Main Switch Fuel Connector (Engine side) Stop Switch Primer Bulb Stop Switch Lock Fuel Connector (Fuel tank side)

  • Page 18: Label Locations

    LABEL LOCATIONS ENOM00019-A Warning label locations ENOF00127-B...
  • Page 19 LABEL LOCATIONS Warning label regarding owner's man- For RC model Warning label regarding stop switch ual, top cowl, engine stop switch, lanyard. engine oil level and unleaded gasoline. ENOF00005-D Warning regarding gasoline. ENOF00005-0 ENOF00005-E Warning label regarding rotating parts, Warning regarding gasoline (See...
  • Page 20 LABEL LOCATIONS Warning tag regarding instructions of ENOM00023-0 Symbols the fuel tank cap (See page 31). I n d i v i d u a l s y m b o l m a r k s m e a n s a s described below.
  • Page 21 LABEL LOCATIONS Flammable - Keep Fire Away Warning, high temperature ENOF00205-1 ENOF00119-0 Gear shift lever operation direction, dual direction ENOF00122-0 Engine start/Engine cranking ENOF00123-0 Warning, rotating object ENOF00249-1 Warning, high voltage ENOF00204-0...
  • Page 22 ECI (Emission Control Information) decal locations ENOF00005-G EPA Emissions Regulations trol Information decal as permanent evi- Outboards sold by Tohatsu America Cor- dence of EPA certification. poration in the United States are certified to the United States Environmental Protec- Emissions Warranty Coverage...

  • Page 23: Installation

    INSTALLATION ENOM00024-A ENOW00006-0 1. Mounting the outboard motor on WARNING boat Most boats are rated and certified in terms of their maximum allowable horsepower, Outboard motor mounting must be per- as shown on the boat’s certification plate. formed by trained service person(s) using Do not equip your boat with an outboard lift or hoist with sufficient capacity.
  • Page 24 INSTALLATION ENOM00830-0 Mounting bolts 10−30 mm (0.4−1.2 in) ENOF00015-A 1. Bottom of hull 2. Anti ventilation plate ENOW00007-0 CAUTION Before beginning the running test, check ENOF00017-A that the boat with maximum capacity 1. Bolt (12 × 105) loading floats on the water in a proper 2.

  • Page 25: Remote Control Device Installation

    INSTALLATION ENON00003-0 ENOM00840-0 Notes 2. Remote control device 1. Apply sealing agent, such as silicone installation sealed between the bolts and the tran- som board holes before tightening the ENOW00850-0 bolts. Remote control box location 2. Be sure to tighten the mounting bolt nuts to the specified torque.

  • Page 26: Battery Installation

    INSTALLATION 17.7in) longer than the measured distance. Seek immediate medical treatment. Temporarily pull the cable along the ENOW00013-0 intended cable route to check its length is WARNING sufficient. Connect the remote control cable to the Battery generates explosive hydrogen gas. engine, then run the cable to the remote Be sure to: control box, making sure it is not sharply...

  • Page 27: Propeller Installation

    INSTALLATION ENON00006-A ENOM00045-A Note 4. Propeller installation Recommended battery: 12V 100AH/5HR, 850 (Cold Cranking Amps (CCA), In case of ENOW00085-A cold whether: 12V120AH/5HR (1000CCA)) WARNING Specifications and features of batteries vary among the manufacturers. Consult the Do not begin propeller removal and instal- manufacturer for details.
  • Page 28 INSTALLATION could lead to the propeller coming off during operation. ENOF00084-A 1. Propeller 2. Thrust holder 3. Stopper 4. Washer 5. Nut 6. Split pin ENOW00085-0 WARNING Do not hold propeller with hand(s) when loosening or tightening propeller nut. Put a piece of wood block between propeller blade and anti-ventilation plate to hold pro- peller.

  • Page 29: Pre-Operating Preparations

    ALCOHOL spilled. The fuel system components on your If the fuel tank is disassembled for TOHATSU engine will withstand up to 10% cleaning, reassemble carefully. Imper- ethyl alcohol (hererinafter referred to as the fect assembly may cause a fuel leak, "ethanol"), content in the gasoline.

  • Page 30: Fuel Filling

    ENOW00020-0 DANGER CAUTION Consult an authorized dealer for details on When operating a TOHATSU engine on handling gasoline, if necessary. gasoline containing alcohol, storage of gasoline in the fuel tank for long periods Gasoline and its vapors are very flammable should be avoided.
  • Page 31 PRE-OPERATING PREPARATIONS When or before refueling: Stop the engine, and do not start the engine during refueling. Do not smoke. Be careful not to overfill fuel tank. Wipe up any spilled gasoline immediately. When or before cleaning the gasoline tank: Dismount fuel tank from the boat.

  • Page 32: Engine Oil Recommendation

    PRE-OPERATING PREPARATIONS ENOM00037-A 3. Engine oil recommendation 10W−40 ENOW00022-A CAUTION 10W−30 The engine oil is drained for shipping from ˚C the factory. Be sure to fill the engine to the ˚F proper level before starting engine. (To ENOF00208-0 properly fill the engine with oil follow the instructions, See page 65) ENOW0002A-A CAUTION...

  • Page 33: Break-In

    PRE-OPERATING PREPARATIONS ]ENOM00033-A 4. Break-In Your new outboard motor and lower unit ENOW00023-0 require break-in for the moving compo- CAUTION n e n t s a c c o r d i n g t o t h e c o n d i t i o n s Operating the outboard motor without described in the following time table.

  • Page 34: Warning System

    PRE-OPERATING PREPARATIONS ENOM00039-0 5. Warning system If outboard motor encounters an abnormal condition of fault, the warning horn will emit a continuous beep or intermittent short beeps and the warning lamp (LED) will synchronize with the horn and engine ENOF00852-0 speed will be limited (engine will not be 1.
  • Page 35 PRE-OPERATING PREPARATIONS ENOM00041-A Warning indicators, faults and remedy Warning indicators Description of faults Rem- Remark or notice Sound lamp lamp lamp Continu- Normal system test 1 second when key on High Engine speed exceeds Approx. Continu- speed maximum 6,200 r/min allowable RPM Continu- speed...
  • Page 36 PRE-OPERATING PREPARATIONS Remedy ENOM00870-0 Engine oil replacement indicator Reduce the throttle to less than half function reset method opening, and move to safe place As for "Engine oil replacement indicator quickly, and stop the engine. function", informing the appropriate timing Check the propeller for bent or dam- of engine oil replacement by blinking of the aged blades.
  • Page 37 PRE-OPERATING PREPARATIONS 4. Within 5-10 seconds you will here 3 beeps to inform you that you have suc- cessfully reset the system. ENOF00856-0 5. Turn the ley to the 'off' position and replace the safety lanyard lock. The engine oil replacement indicators function operates again after 100 hours operation from reset this function.

  • Page 38: Engine Operation

    ENGINE OPERATION ENOM00042-0 2. Loosen the tank cap until contacts the Before starting tab lock and release internal pressure completely. After that, close the tank ENOW00022-A cap until two click sound is heard. CAUTION 3. Connect the fuel connector to the engine and fuel tank.

  • Page 39: Starting The Engine

    ENGINE OPERATION running or when the outboard motor is ENOM00045-A 2. Starting the engine tilted up. Otherwise, fuel could overflow. ENOW00030-A ENOW00036-A WARNING CAUTION When using EPA approval fuel tank, only When the engine is started in the test tank, use a primer bulb/hose assembly that has a Fuel Demand Valve (FDV) installed in the to avoid over heating and water pump...

  • Page 40: Tiller Handle Type

    ENGINE OPERATION i n g i m p o s s i b l e a n d / o r d a m a g i n g t h e 3. Set the control lever in the Neutral starter.
  • Page 41 ENGINE OPERATION Side mount RC type 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 Flo- tation Device.) START PUSH TO IDLE CHANGE ENOF00867-0 1.

  • Page 42: Emergency Starting

    ENGINE OPERATION ENOM00042-A Emergency starting ENOW00099-A WARNING When the emergency starter rope is used for starting engine; Start in gear protection does not work. Be sure to shift is at neutral position. ENOF00851-0 Otherwise the engine will move the boat 1.

  • Page 43: Warming Up The Engine

    ENGINE OPERATION 2. Remove the flywheel cover. ENOW00860-0 CAUTION Be sure to keep the harness away from the rotation parts. ENOF00873-0 1. Bolt 2. Rubber grommet 3. Be sure to install the stop switch lock to the stop switch, and attach the stop ENOF00875-0 switch lanyard securely to the operator 1.

  • Page 44: Forward, Reverse, And Acceleration

    ENGINE OPERATION Buzzer short sounded one time, when set to 650 rpm engine speed, and tells the lowest engine speed was set. Buzzer short sounded twice, when set to 950 rpm engine speed, and tells the high- est engine speed was set. Reset the engine speed when after engine restarted and or engine speed is above 3,000 rpm, and then trolling engine speed...
  • Page 45 ENGINE OPERATION of engine can cause loss of control of ENON00014-0 Note outboard motor. Rapid loss of engine power can lead to falling down or caus- Frequent shifting to forward or reverse can ing passenger(s) to be thrown over- accelerate wear or degradation of parts. In board.
  • Page 46 ENGINE OPERATION 2. When the engine reaches trolling (or Forward 1. Quickly push the control lever to the idling) speed, quickly pull the shift lever Forward (F) position 32°, where the to the Forward position. gear is connected, while lifting up on Reverse the lock button located under the con- 1.

  • Page 47: Stopping The Engine

    ENGINE OPERATION ENOF00879-0 ENOM00049-A 5. Stopping the engine START ENOF00880-0 PUSH TO IDLE CHANGE ENOW00868-0 1. Throttle grip WARNING 2. Shift lever 3. Main switch key Be careful not to remove engine stop 1. Turn the throttle grip to the slow posi- switch lanyard from engine accidentally tion.
  • Page 48 ENGINE OPERATION START ENOF00882-0 1. Control lever 2. Mine switch key 1. Put the control lever in the Neutral position and run the engine for 2-3 ENOF00883-0 minutes at idling speed for cooling 1. Stop switch down if it has been running at full 2.

  • Page 49: Steering

    ENGINE OPERATION ENOF00891-0 ENOM00920-0 6. Steering ENOW00870-0 ENOF00893-0 WARNING ENOM00050-0 7. Trim angle Sudden steering may cause passenger(s) to be thrown overboard or falling down. The trim angle of the outboard motor can Tiller handle type be adjusted to suit the transom angle of Right turn the hull, and load conditions.
  • Page 50 ENGINE OPERATION and readjust trim angle before continu- ing cruise. For outboard motor model with PTT switch on the bottom cowl, do not oper- ate the switch during cruising, or control of boat may be lost. ENOM00051-A ENOF00053-0 Gas assist type ENOM00052-0 Proper trim angle The position of the thrust rod is correct if...
  • Page 51 ENGINE OPERATION ing the boat in this manner, the outboard motor may ingest air into the water cooling system, resulting in engine overheating. ENOM00056-0 How to use the trim meter (option) When the trim angle is set as desired, take a reading off the trim meter, and record it for future reference.

  • Page 52: Tilt Up, Tilt Down And Shallow Water Operation

    ENGINE OPERATION injury in case the outboard motor body ENOW00048-0 falls. WARNING Unsuitable trim position can cause loss of control of boat. When testing a trim When tilting up or down, be careful not to position, run boat slow initially to see if it p l a c e y o u r h a n d b e t w e e n t h e s w i v e l can be controlled safely.
  • Page 53 ENGINE OPERATION ENOM00066-A Tilt up 1. Move (UP) lock lever to “Free” position. 2. Fully tilt up the outboard motor. 3. While keeping the outboard motor in full tilt up position, move, (DOWN) lock lever to “Lock” position. 4. For safety, set the tilt stopper into the ENOF00889-0 set- up position, although the outboard 1.
  • Page 54 ENGINE OPERATION ENOM00940-0 Manual relief valve The outboard motor can also be tilted up If the battery is dead, and the power trim & and down using the switch provided under tilt switch thus inoperative, open the man- the bottom cowl. ual valve completely in the Manual direc- tion.

  • Page 55: Shallow Water Operation

    ENGINE OPERATION ENOM00068-A 9. Shallow water operation ENOW00051-0 WARNING During shallow water operation, be careful not to place your hand between the swivel bracket and the clamp bracket. Be sure to ENOF00064-A tilt the outboard motor down slowly. 1. Free position 2.

  • Page 56: Removing And Carrying The Outboard Motor

    REMOVING AND CARRYING THE OUTBOARD MOTOR ENOM00070-A 1. Removing the outboard motor ENOW00890-0 WARNING Before installing 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 57: Storing The Outboard Motor

    REMOVING AND CARRYING THE OUTBOARD MOTOR ENOF00072-B ENOM00072-A ENOF00072-A 3. Storing the outboard motor Keep the outboard motor in a vertical posi- Outboard motor should be stored in a ver- tion when carrying. tical position. The optional outboard motor stand is rec- ommended for keeping the outboard motor vertical both during transport and storage.

  • Page 58: Adding A Fuel Stabilizer

    REMOVING AND CARRYING THE OUTBOARD MOTOR ENOM00950-0 Adding a fuel stabilizer When adding a fuel stabilizer additive (commercially available), first fill the fuel tank with fresh fuel. If the fuel tank is only partially filled, air in the tank can cause the fuel to deteriorate during storage.

  • Page 59: Trailering

    TRAILERING ENOM00072-A ENOW00071-0 When transporting a boat on a trailer with CAUTION the outboard motor still attached, discon- nect the fuel line from the outboard motor The tilt support device supplied on your outboard motor is not intended for towing. beforehand and keep the outboard motor It is intended to support the outboard in the normal running position or on a tran-...
  • Page 60 TRAILERING Gas assist type Care must be taken so as not to release lock lever by accident. For more safety, tie the cylinder pin lower to the outboard motor with a rope. ENOF00073-A 1. Lock lever 2. Lock position 3. Cylinder pin lower 4.

  • Page 61: Adjustment

    ADJUSTMENT ENOM00073-0 screw. 1. Steering friction Tiller handle type ENOW00074-A WARNING Do not overtighten the steering friction lever it could result in difficulty of move- ment resulting in the loss of control caus- ENOF00911-0 ing an accident and could lead to severe 1.

  • Page 62: Trim Tab Adjustment

    ADJUSTMENT 1. Throttle friction adjustment screw A. Lighter B. Heavier ENOM00076-0 4. Trim tab adjustment I f s t r a i g h t - l i n e c r u i s i n g c a n n o t b e achieved, adjust the trim tab located under the anti-ventilation plate.

  • Page 63: Inspection And Maintenance

    INSPECTION AND MAINTENANCE ENOM00077-0 adjustments. Maintenance, replace- Care of your outboard motor ment, or repair of the emission control To keep your outboard motor in the best devices and systems may be per- operating condition, it is very important formed by any marine SI (Spark Igni- that you perform daily and periodic main- tion) engine repair establishment or tenance as suggested in the maintenance...

  • Page 64: Daily Inspection

    INSPECTION AND MAINTENANCE ENOM00079-0 1. Daily Inspection Perform the following checks before and ENOW00078-0 after use. WARNING Do not use outboard motor if any abnor- mality is found during pre-operation check or it could result in severe damage to the motor or severe personal injury.
  • Page 65 INSPECTION AND MAINTENANCE Item Points to Check Remedy • Check if the anode is securely installed. Repair if necessary Other parts • Check the anode for corrosion and deformation. Replace ENOM00081-A 2. Lower level 1700 mL Oil level checking ENON00024-0 Note If the oil level is low, or too high, the life of the engine will be shortened significantly.
  • Page 66 INSPECTION AND MAINTENANCE ENOM00083-0 ENON00026-0 Washing outboard motor Note If outboard motor is used in salt water, It is recommended to check chemical prop- brackish water or water with a high acidic erties of water on which your outboard motor is regularly used. level, use fresh water to remove salt, chemicals or mud from exterior and cool- ing water passage after every cruising or...

  • Page 67: Fuse Replacement

    If the cause for the problem is not corrected, the fuse will likely blow again. If the fuse continues to blow, request an authorized Tohatsu dealer to inspect the outboard motor. ENOW00923-0 CAUTION ENOF00921-0 1.
  • Page 68 INSPECTION AND MAINTENANCE 4. Remove the fuse and check it. If the fuse is blown, replace it with a fuse of the same specified rating. The out- board motor is supplied with spare fuses in the spare fuse holder. 1 2 3 ENOF00922-0 1.

  • Page 69: Periodic Inspection

    INSPECTION AND MAINTENANCE ENOM00090-0 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 number of months, whichever comes first.
  • Page 70 INSPECTION AND MAINTENANCE Inspection intervals First 20 Every 50 Every 100 Every 200 Description Inspection procedure Remarks hours of 1 hours of 3 hours of 6 hours of 1 month months months year Sliding and Rotating Parts. Apply and pump in grease. (See Grease Nipples page 79) Outer Equipment...
  • Page 71 INSPECTION AND MAINTENANCE 9. Fill the engine through filler port with 2. Lower limit (Min.) ENON00920-0 recommended oil (see chart below) to Note the middle of dipstick mark. Use only recommended engine oil (See 10. Tighten the oil filler cap. page 13) 10W−40 10W−30...
  • Page 72 INSPECTION AND MAINTENANCE ENOM00092-A Oil filter replacement ENOW00091-0 CAUTION You may be injured due to high engine tem- peratures if you fill engine oil just after ENOF00094-0 stopping. Changing engine oil should be done after the engine has been cooled. 1.

  • Page 73: Fuel Tank

    INSPECTION AND MAINTENANCE Install fuel filter with all related parts in ENOM00096-0 Fuel filter (for fuel tank) place, or fuel leak could occur, leading 1. Remove the fuel pickup elbow of the to catching fire or explosion. Check fuel system regularly for leakage. fuel tank by turning it counterclockwise Contact authorized dealer for fuel sys- 2.
  • Page 74 INSPECTION AND MAINTENANCE tal drop or fall of outboard motor could lead to severe personal injury. Be sure to lock outboard motor if it is tilted up, or accidental fall of outboard motor could lead to severe personal injury. Do not go under outboard motor tilted up and locked, or accidental fall of out- board motor could lead to severe per- sonal injury.

  • Page 75: Propeller Replacement

    INSPECTION AND MAINTENANCE fire prevention and environment protection 2. Remove the split pin, propeller nut and regulations. washer. 3. Remove the propeller and thrust ENON00032-0 Note holder. 4. Apply genuine grease to the propeller If water in the oil, giving it a milky colored shaft before installing a new propeller.
  • Page 76 INSPECTION AND MAINTENANCE could lead to the propeller coming off 6. Measure the spark plug electrode gap during operation. with a wire type feeler gauge. The gap should be 0.8-0.9 mm (0.031-0.035 inches). If the gap is different, replace ENOM00087-A Spark plugs replacement the spark plug with a new one ENOW00087-0...

  • Page 77: Anode Replacement

    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 (16 mm), replace it. ENON00029-0 Notes Never grease or paint the anode. At each inspection re-tighten the anode attaching bolt.
  • Page 78 INSPECTION AND MAINTENANCE ENOM00089-A 1. Oil cap Power Trim & Tilt oil checking 2. Oil level Recommended oil ENOW00088-0 Use an automatic transmission fluid or WARNING equivalent. Recommended oils are as shown below. Be sure that outboard motor is secured to transom or service stand, or acciden- ATF Dexron III tal drop or fall of outboard motor could...
  • Page 79 INSPECTION AND MAINTENANCE ENOM00960-0 Grease point Apply water proof grease to the parts shown below. ENOF00931-0...

  • Page 80: Off-Season Storage

    INSPECTION AND MAINTENANCE ENOM00100-A 4. Remove the spark plugs and put a tea- 3. Off-season storage spoon of engine oil or spray storage oil into the combustion chamber through the spark plug holes. Before you put your outboard motor in storage, it is a good opportunity to have it 5.
  • Page 81 INSPECTION AND MAINTENANCE Perform all work outdoors or in a well ventilated place. 1. Disconnect the fuel hose from the out- board motor. 2. Remove the top cowl. 3. Release the drain tube from the clamp and pull the tube outside the bottom ENOF00072-A cowl.

  • Page 82: Pre-Season Check

    INSPECTION AND MAINTENANCE ENOW00097-0 2. Check the electrolyte level, and mea- sure the voltage and specific gravity of WARNING the battery. Be sure to use cloth to remove fuel remain- ing in the cowl and dispose of it in accor- Specific Gravity Terminal Voltage Charge Condition...

  • Page 83: Cold Weather Precautions

    INSPECTION AND MAINTENANCE 1. Wash the outboard motor with fresh ENOM00107-A 7. Striking underwater object water to remove salt or dirt. 2. Remove the engine oil drain screw and Striking the sea bottom or an underwater completely drain water and oil from the object may severely damage the outboard engine.

  • Page 84: Troubleshooting

    TROUBLESHOOTING ENOM00108-0 If you encounter a problem, consult the check list below to determine the cause and to take the proper action. An authorized dealer will always be happy to provide any assistance and information. Possible cause Empty fuel tank Incorrect connection of fuel system Air entering fuel line Deformed or damaged fuel hose...
  • Page 85 TROUBLESHOOTING Possible cause Low compression Carbon deposits in the combustion chamber Incorrect valve clearance Low oil pressure/level, oil pump failure, Clogged oil filter (Pressure switch ON) Insufficient cooling water flow, clogged or defective pump Faulty thermostat Cavitations or ventilation Incorrect propeller selection Damaged or bent propeller Improper thrust rod position Unbalanced load on boat...

  • Page 86: Tool Kit And Spare Parts

    TOOL KIT AND SPARE PARTS ENOM00109-0 The following a list of the tools and spare parts provided with the motor. Items Quantity Remark Socket wrench 16 Socket wrench 10-13 Tool bag Socket wrench handle Pliers ± Screwdriver Emergency starter rope Spark plug NGK DCPR6E Propeller nut split pin...

  • Page 87: Propeller Table

    PROPELLER TABLE ENOM00111-0 Use a genuine propeller. A propeller must be selected so that the engine rpm measured at wide open throttle while cruising is within the recommended range. 40/50: 5000–6000 rpm Propeller Propeller Size (Diameter × pitch x Diameter) Mark Light boats CS17...

  • Page 88: Emission Control System Information

    EMISSION CONTROL SYSTEM INFORMATION ENOM01000-0 ENOM01003-0 Emission Sources Clean Air Acts of the United States and California, and Environment Canada Carbon monoxide, oxides of nitrogen and hydrocarbons are produced in the course EPA, California, and Canadian regulations of the combustion process. Controlling require all manufacturers to provide written production of oxides of nitrogen and instructions that describe the operation...
  • Page 89 If you notice any of the following symp- ENOM00033-0 toms, have your outboard motor inspected Low permeation fuel hose and repaired by an authorized Tohatsu ser- requirement vice dealer before further use. EQUIPPED FOR UNITED STATES AND Hard starting or stalling immediately...
  • Page 90 EQUIPPED FOR UNITED STATES AND CANADA MODEL CANADA MODEL The Environmental Protect ion Agency TOHATSU adopts Primer bulb/hose (EPA) required portable fuel systems that assembly approved by the Environment are produced after January 1, 2011 for use Protection Agency (EPA).
  • Page 91 EMISSION CONTROL SYSTEM INFORMATION ENOM01007-0 Resources Board’s Personal Watercraft Maintenance a n d O u t b o a rd m a r i n e e n g i n e 2 0 0 1 exhaust emission standards. Follow the maintenance schedule pre- Engines meeting these standards have sented on page 70.
  • Page 92 EMISSION CONTROL SYSTEM INFORMATION Engines meeting these standards have 65% lower emissions than One Star-Low Emission engines. ENOF01004-0 ENOM01012-0 Four Stars-Super Ultra Low Emission The four-star label identifies engines that meet the Air Resources Board’s Sterndrive and Inboard marine engine 2009 exhaust emission standards.

  • Page 93: Limited Warranty Information

    LIMITED WARRANTY INFORMATION...

  • Page 94: Tldi Tohatsu Outboard Engine 5 Year Limited Warranty

    LIMITED WARRANTY INFORMATION...
  • Page 95 LIMITED WARRANTY INFORMATION...

  • Page 96: Four Stroke Tohatsu Outboard Engine 5 Year Limited Warranty

    LIMITED WARRANTY INFORMATION...
  • Page 97 LIMITED WARRANTY INFORMATION...

  • Page 98: Limited Warranty

    LIMITED WARRANTY INFORMATION...
  • Page 99 LIMITED WARRANTY INFORMATION...
  • Page 100 LIMITED WARRANTY INFORMATION...
  • Page 101 LIMITED WARRANTY INFORMATION...

  • Page 102: Information Common To All Limited Warranties

    LIMITED WARRANTY INFORMATION...
  • Page 103 LIMITED WARRANTY INFORMATION...

  • Page 104: Consumer Assistance

    LIMITED WARRANTY INFORMATION...

  • Page 105: Periodic Maintenance Service Records

    LIMITED WARRANTY INFORMATION...
  • Page 106 OWNER’S MANUAL 003-11105-0 1312NB Printed in Japan...

This manual is also suitable for:

Mfs 40a

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