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TOHATSU MFS 4C Owner's Manual

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OWNER'S
MANUAL
4C
MFS
5C
6C
OB No.003-11059-9

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Summary of Contents for TOHATSU MFS 4C

  • Page 1 OWNER’S MANUAL OB No.003-11059-9...
  • Page 2 INJURY OR DEATH. KEEP THIS MANUAL IN A SAFE LOCATION FOR FUTURE REFERENCE. Copyright © 2009-2011 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...
  • Page 3 WILL NOT BE COVERED BY THE APPLICABLE LIMITED WARRANTY IF THIS PROCEDURE IS NOT FOLLOWED. PRE-DELIVERY CHECK Be sure that the product has been checked by an authorized TOHATSU dealer before you take delivery. Limited Warranty Please refer to the TOHATSU outboard motor Limited warranty provided to you with this product, the terms and conditions of which, as amended from time to time, are incorporated by reference into the manual.
  • Page 4 Serial Number : 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 5: Table Of Contents

    CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 GENERAL SAFETY INFORMATION .
  • Page 6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 2.
  • Page 7 INDEX GENERAL SAFETY INFORMATION 1. SPECIFICATIONS 2. NAMES OF PARTS 3. LOCATIONS OF WARNING LABELS 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.OPTIONAL ACCESSORIES 14.PROPELLER TABLE...

  • Page 8: General Safety Information

    8 GENERAL SAFETY INFORMATION GENERAL SAFETY INFORMATION NOTICE : DANGER/WARNING/CAUTION/Note Before installing, operating or otherwise handling your outboard motor, be sure to thoroughly read and understand this Owner's Manual and carefully follow all of the instructions. Of particular importance is information preceded by the words "DANGER,"...
  • Page 9 GENERAL SAFETY INFORMATION 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 10: Specifications

    10 SPECIFICATIONS SPECIFICATIONS MODEL 4C(D) 5C(D) M6C(D) 5C(S) 6C(S) Item (Dual Tank) (Separate Tank) 519 (20.4) Overall Length mm (in) Overall Width mm (in) 323 (12.7) Except for USA and Canada model 1,053 (41.5) · 1,180 (46.5) · 1,307 (51.5) 1,039 (40.9) ·...

  • Page 11: Names Of Parts

    NAMES OF PARTS NAMES OF PARTS 4C , 5C , 6C ① ○ ○ Tilt Handle Clamp Bracket Fuel Tank ② ○ ○ Top Cowl Clamp Screw Fuel Pick up Elbow ③ ○ ○ Bottom Cowl Throttle Grip Fuel Connector ④...

  • Page 12: Locations Of Warning Labels

    12 LOCATIONS OF WARNING LABELS LOCATIONS OF WARNING LABELS Locations of warning labels Warning label regarding owner's manual, top cowl, engine stop switch, engine oil level and unleaded gasoline Warning label on posi- tion of outboard motor when setting down Warning label on engine stop switch Only for USA and CANADA models...

  • Page 13: Installation

    INSTALLATION INSTALLATION CAUTION 1. Mounting the outboard motor on boat ● Before beginning the running test, WARNING check that the boat with maximum capacity loading floats on the water in Most boats are rated and certified a proper attitude. Check the position in terms of their maximum allowable of water surface on the driveshaft horsepower, as shown on the boat’s...

  • Page 14: Installing The Remote Control Devices

    Clamp Screw remote control device. WARNING Note When using other than Tohatsu's genuine remote control box, DO NOT select the It is recommended to install upper one without neutral safety switch that mounting bolts with bolt head at prevents in-gear start.

  • Page 15: Pre-Operating Preparations

    And, in case any of such abnormality The fuel system components on your is found, discontinue the use of such TOHATSU engine will withstand up to gasoline and contact our dealer 10% alcohol content in the gasoline. immediately.

  • Page 16: Low Permeation Fuel Hose Requirement

    34.4 kPa (5.0 psi). These tanks may contain the following: ● When operating a TOHATSU engine on An air inlet that opens to allow air to gasoline containing alcohol, storage of enter as the fuel is drawn out of the gasoline in the fuel tank for long periods tank.

  • Page 17: Fuel Demand Valve (Fdv) Requirement

    PRE-OPERATING PREPARATIONS 4. Fuel demand valve (FDV) requirement CAUTION EQUIPPED FOR UNITED STATES Be sure to use EPA approved tank and AND CANADA MODEL FDV as a set. Confirm shapes of EPA approved tank and regular tank. The fuel demand valve prevents pressurized fuel from entering the engine and causing a possible fuel spillage.

  • Page 18: Recommended Engine Oil

    18 PRE-OPERATING PREPARATIONS 5. Recommended engine oil U s e o n l y h i g h q u a l i t y 4 - s t r o k e engine oil to insure performance and prolonged engine life. Use NMMA FC-W certified 4-stroke engine oil below.

  • Page 19: Break-In

    PRE-OPERATING PREPARATIONS 6. Break-in Your new outboard motor and lower CAUTION unit require break-in for the moving c o m p o n e n t s a c c o r d i n g t o t h e Operating the outboard motor without conditions described in the following break-in can shorten service life of the...

  • Page 20: Engine Oil Warning Lamp

    20 PRE-OPERATING PREPARATIONS 7. Engine oil warning lamp 8. ESG (A device preventing over revolution) Oil pressure is required to lubricate ESG is a device to prevent over internal engine parts. revolution of the engine (more than When the warning lamp (Red) is off, it approximately 6,250 rpm).

  • Page 21: Engine Operation

    ENGINE OPERATION ENGINE OPERATION Before starting 1. Filling the fuel CAUTION DANGER The engine oil is drained for shipping Consult an authorized dealer for details on handling gasoline, if necessary. from the factory. Be sure to fill the engine to the proper level before starting Gasoline and its vapors are ver y engine.
  • Page 22 22 ENGINE OPERATION ③  When using integral tank WARNING Remove top cowl and fill the fuel not to over the full mark. When opening fuel tank cap, be sure to follow the procedure described below. When using separate tank Fuel could blast out through the fuel Fill the fuel carefully not to over tank cap in case the cap is loosened by...
  • Page 23 ENGINE OPERATION ③ W hen using integral tank For USA and Canada model Remove top cowl and fill the fuel ① F ull open the air vent screw on not to over the full mark. the tank cap and release internal When using separate tank pressure.

  • Page 24: Feeding The Fuel

    24 ENGINE OPERATION 2. Feeding the fuel Except for USA and Canada model ① W hen using integral tank Loosen the air vent screw on the tank cap by two turns. When using separate tank Engine side Full open the air vent screw on the tank cap.

  • Page 25: Starting

    ENGINE OPERATION CAUTION 3. Starting ① Place the shift lever in the neutral When using integral tank, disconnect fuel connector. position. ③ I f y o u u s e a s e p a r a t e t a n k , connect the fuel connector to the engine and squeeze primer bulb until it becomes stiff to feed fuel...
  • Page 26 26 ENGINE OPERATION ③ S e t t h e t h ro t t l e g r i p t o s l o w ⑧ When the motor starts, push the choke knob back. (in the case the position.

  • Page 27: Warming Up The Engine

    ENGINE OPERATION Engine speeds 4. Warming up the engine Idling speed after warming up. War m the engine at low engine Remark: In case of cold engine speeds for about three minutes. This starting, idling speed is increased allows the lubricating oil to circulate to about 300 rpm for several minutes.

  • Page 28: Forward And Reverse

    28 ENGINE OPERATION 5. Forward and reverse WARNING Before shifting into forward or reverse, Shift Lever make sure that boat is properly moored and outboard motor can be steered fully to the right and left. Make sure that no swimmer(s) is ahead or astern of the boat.

  • Page 29: Stopping

    ENGINE OPERATION CAUTION 6. Stopping Be sure to warm up engine well before starting cruise. Operating cold engine may cause damage to your motor. Stop Switch Lock Note Hock Stop Switch Idle speed may be higher during warming up of engine. If shifted to Forward or Reverse during warming ①...

  • Page 30: Trim Angle

    30 ENGINE OPERATION WARNING 7. Trim angle The trim angle of the outboard motor ● Do not put hand or finger in between can be adjusted to suit the transom outboard motor body and clamp bracket when adjusting trim angle to angle of the hull, and load conditions.

  • Page 31: Tilt Up, Tilt Down And Shallow Water Operation

    ENGINE OPERATION MF, EF type Note ① Stop the engine. ② Shift the outboard into neutral. Stop the engine before adjusting trim ③ Raise the engine to the tilt up position. angle. ④ Change the thrust rod position. ⑤ Gentry lower the outboard. 8.

  • Page 32: Shallow Water Operation

    32 ENGINE OPERATION WARNING ● Do not put hand or finger in between outboard motor body and clamp bracket when adjusting trim angle to prevent injury in case the outboard Tilt up motor body falls. position ● When tilting up outboard motor with fuel joint for over a few minutes, Tilt be sure to disconnect fuel hose or...
  • Page 33 ENGINE OPERATION WARNING ● Run at lowest possible speed when using shallow water drive. ● Tilt lock is disabled when in shallow water drive position. ● When driving shallow water, be careful not to strike outboard motor Tilt Lever against sea bottom, or propeller may be pushed out of water, resulting in loss of control.

  • Page 34: Removing And Carrying The Outboard Motor

    34 REMOVING AND CARRYING THE OUTBOARD MOTOR REMOVING AND CARRYING THE OUTBOARD MOTOR 1. Removing the outboard motor 3. Storing the outboard motor ① Stop the engine. Outboard motor should be stored in a ② Disconnect the fuel connector, vertical position. the remote control cables and the Note battery cords from the outboard...

  • Page 35: Trailering

    TRAILERING TRAILERING WARNING Do not go under outboard motor tilted up even if it is supported by support bar, or accidental fall of outboard motor could lead to severe personal injury. WARNING Close air vent screw of fuel tank and fuel cock before carrying or storing outboard motor and fuel tank, or fuel may leak, potentially catching fire.

  • Page 36: Adjustment

    36 ADJUSTMENT ADJUSTMENT WARNING 1. Steering friction The steering friction can be adjusted Do not overtighten the throttle grip or remote control tensioner or it could result in accordance with your preference in difficulty of movement resulting in the by turning the steering adjust bolt. loss of control causing an accident and could lead to severe injury.

  • Page 37: Inspection And Maintenance

    INSPECTION AND MAINTENANCE INSPECTION AND MAINTENANCE Care of your outboard motor EPA Emissions Regulations To keep your outboard motor in the EPA (United States Environmental best operating condition, it is very Protection Agency) has emission important that you perform daily and regulations regulating air pollution periodic maintenance as suggested from new outboard motors.

  • Page 38: Daily Inspection

    38 INSPECTION AND MAINTENANCE 1. Daily inspection Perform the following checks before WARNING and after use. Do not use outboard motor if any abnormality is found during pre-operation check or it could result in severe damage to the motor or severe personal injury. Item Points to Check Remedy...
  • Page 39 INSPECTION AND MAINTENANCE Maintaining engine oil Notes If the engine oil is low, the life of the engine will be shortened significantly. Consult with an authorized dealer if the engine oil is milky color, or appears contaminated. ■ Checking oil level ①...
  • Page 40 40 INSPECTION AND MAINTENANCE ■ Use flushing attachment. Washing outboard motor ① Remove propeller (refer to Propeller If outboard motor is used in salt water, brackish water or water with a Replacement). Remove the water high acidic level, use fresh water to plug from the motor, and screw in remove salt, chemicals or mud from the flushing attachment.
  • Page 41 INSPECTION AND MAINTENANCE Replacing the propeller WARNING A worn-out or bent propeller will lower the motor's performance, and cause Do not hold propeller with hand(s) engine trouble. when loosening or tightening propeller nut. Put a piece of wood block between Before removing the propeller, remove propeller blade and anti-ventilation the spark plug caps from the spark...
  • Page 42 42 INSPECTION AND MAINTENANCE ⑤ Attach spark plug and tighten to Replacing the spark plugs specified torque. WARNING Notes ● Do not reuse spark plug with damaged insulation, or sparks ◎ Spark plug torque : can leak through crack, potentially 18.0Nm(13.3ft-lb)(1.84kgf-m) leading to electric shock, explosion If a torque-wrench is not available...

  • Page 43: Periodic Inspection

    INSPECTION AND MAINTENANCE 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 44 44 INSPECTION AND MAINTENANCE Notes 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. U s e o n l y h i g h q u a l i t y 4 - s t ro k e Replacing engine oil engine oil to insure performance and Engine oil mixed with dust or water...
  • Page 45 INSPECTION AND MAINTENANCE Cleaning the fuel filters and the CAUTION fuel tank Fuel filters are provided inside the fuel You may be injured due to high engine temperatures if you fill engine oil just tank and engine. after stopping. Changing engine oil should be done after the engine has WARNING been cooled.
  • Page 46 46 INSPECTION AND MAINTENANCE ■ Fuel filter (for fuel tank) Replacing gear oil Loosen the fuel pickup elbow shown at WARNING left, remove it and clean the fuel filter. ● Be sure that outboard motor is secured to transom or service stand, or accidental drop or fall of outboard motor could lead to severe personal injury.

  • Page 47: Off-Season Storage

    INSPECTION AND MAINTENANCE until oil flows out of the upper plug 3. Off-season storage hole. Before you put your outboard motor in storage, it is a good opportunity to have it serviced and prepared by your Oil plug (Upper) dealer. CAUTION Before servicing the motor for storage: ●...

  • Page 48: Pre-Season Check

    48 INSPECTION AND MAINTENANCE ⑥ Change the gear oil in the gear 4. Pre-season check case. ⑦ Apply grease to the propeller shaft. ① Check that the shift and throttle ⑧ Apply grease to all sliding parts, function properly. joints, nuts, and bolts. (Be sure to turn the propeller shaft ⑨...

  • Page 49: Motor Submerged In Water

    INSPECTION AND MAINTENANCE 5. Motor submerged in water 6. Cold weather precautions After taking your outboard motor out If you moor your boat in cold weather of the water, immediately take it to at temperatures below 0˚C (32˚F), your dealer. there is the danger of water freezing The following are the emergency in the cooling water pump, which may...

  • Page 50: Troubleshooting

    50 TROUBLESHOOTING TROUBLESHOOTING 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 ●...
  • Page 51 TROUBLESHOOTING Possible cause ● ● ● ● ● Low compression ● ● Carbon deposits in the combustion chamber ● ● Incorrect valve clearance ● Low oil pressure/level ● ● ● Low oil level ● ● Use of improper oil ● ●...

  • Page 52: Tool Kit And Spare Parts

    52 TOOL KIT AND SPARE PARTS TOOL KIT AND SPARE PARTS Items Quantity Remark Tool bag Pliers 10 × 13 mm Socket wrench Socket wrench 16 mm Service tools Socket wrench handle Screwdrivers Cross-and straight-point Screwdriver handle Starter rope 1,000 mm Spark plug NGK DCPR6E Spare parts...

  • Page 53: Optional Accessories

    OPTIONAL ACCESSORIES OPTIONAL ACCESSORIES Fuel Tank & Primer Bulb Ass’ y (12L) Fuel filter kit Touch-up paint (300ml) Propeller Genuine engine oil (450ml) Flushing attachment Genuine gear oil (500ml) Remoto control box Various kinds of fitting parts are available. Please consult with your dealer.

  • Page 54: Propeller Table

    54 PROPELLER TABLE PROPELLER TABLE 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. 4 : 4,500 to 5,500 rpm 5 : 4,500 to 5,500 rpm 6 : 5,000 to 6,000 rpm Propeller Size (Diameter ×...
  • Page 56 OWNER’S MANUAL TOHATSU CORPORATION Address : 5-4, 3-chome, Azusawa, Itabashi-ku, TOKYO, 174-0051 JAPAN Phone : TOKYO (03)3966-3117 FAX : TOKYO (03)3966-2951 URL : www.tohatsu.co.jp 003-11059-9 1107NB Printed in Japan...

This manual is also suitable for:

Mfs 4bMfs 5bMfs 6b

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