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TOHATSU M 6B Owner's Manual

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OWNER'S
MANUAL
M 6B
8B
9.8B
OB No.003-11029-D

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Summary of Contents for TOHATSU M 6B

  • Page 1 OWNER’S MANUAL M 6B 9.8B OB No.003-11029-D...
  • Page 2 INJURY OR DEATH. KEEP THIS MANUAL IN A SAFE LOCATION FOR FUTURE REFERENCE. Copyright © 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 written...
  • 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 GENERAL SAFETY INFORMATION ........8 SPECIFICATIONS .
  • Page 7 INDEX GENERAL SAFETY INFORMATION 1. SPECIFICATIONS 2. NAMES OF PARTS 3. INSTALLATION 4.PRE-OPERATING PREPARATIONS 5.ENGINE OPERATION 6.REMOVING AND CARRYING THE OUTBOARD MOTOR 7.TRAILERING 8.ADJUSTMENT 9.INSPECTION AND MAINTENANCE 10.TROUBLESHOOTING 11.TOOL KIT AND SPARE PARTS 12.OPTIONAL ACCESSORIES 13.PROPELLER TABLE...

  • Page 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 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

    SPECIFICATIONS 6B MF, 8B MF, 8B EF, 8B EP, 9.8B MF, 9.8B EF, 9.8B EP MODEL 6B MF 8B MF 8B EF 8B EP 9.8B MF 9.8B EF 9.8B EP Item Overall Length mm (in) 793 (31.2) 505 (19.9) 793 (31.2) 505 (19.9) Overall Width mm (in)

  • Page 11: Names Of Parts

    NAMES OF PARTS NAMES OF PARTS 6B MF, 8B MF, 9.8B MF Tilt Handle Starter Handle Choke Knob Top Cowl Shift Lever Fuel Connector Bottom Cowl Throttle Grip Primer Bulb Cooling Water Check Port Clamp Screw Fuel Tank Tilt Stopper Clamp Bracket Fuel Tank Cap Drive Shaft Housing...
  • Page 12 NAMES OF PARTS 8B EF, 9.8B EF Tilt Handle Starter Handle Stop Switch Top Cowl Shift Lever Main Switch Bottom Cowl Throttle Grip Fuel Connector Cooling Water Check Port Clamp Screw Battery Cord Tilt Stopper Clamp Bracket Primer Bulb Drive Shaft Housing Thrust Rod Fuel Tank Water Plug...
  • Page 13 NAMES OF PARTS 8B EP, 9.8B EP Battery Cord Tilt Handle Starter Handle Primer Bulb Top Cowl Shift Lever Fuel Tank Bottom Cowl Clamp Screw Fuel Tank Cap Cooling Water Check Port Clamp Bracket Air Vent Screw Tilt Stopper Thrust Rod Fuel Connector Drive Shaft Housing Oil Plug (Upper)

  • Page 14: Installation

    INSTALLATION Transom matching 1. Mounting the outboard motor on boat 1 Be sure that the anti ventilation plate of the outboard motor is 30-50mm ������� (1.2-2 in) below the bottom of hull. If the above condition cannot be Most boats are rated and certified met due to the shape of the bottom in terms of their maximum allowable of your boat, please consult your...
  • Page 15 INSTALLATION ������� ������� • Before beginning the running test, • Mounting the outboard motor without check that the boat with maximum following this manual can lead to capacity loading floats on the unsafe conditions such as poor water in a proper attitude. Check maneuverability, lack of control or the position of water surface on fire.

  • Page 16: Installing The Remote Control Devices

    INSTALLATION 1 Fitting of holder cap and sleeve B 2. Installing the remote control devices guide Throttle side..Fit the holder cap It is recommended that you consult to the end of the cable and fix it w i t h y o u r a u t h o r i z e d d e a l e r f o r by the nut.
  • Page 17 INSTALLATION Holder Cap: Sleeve B gulde: fit it to remove fit it to remove control cable and control cable and flt it to ball joint Shlft cable flt it to shift lever Throttle lever To C.D. unlt Cable outer groove Shlft Lever Cable clip...
  • Page 18 INSTALLATION 3 Connecting the Cord Assembly (Wiring Harness) Pass the cord assembly from the remote control through the hole in the bottom cowl and connect the electric terminals and then clamp the cord assembly according to the drawing below. Rectifier Fuse wire Clamp Choke...

  • Page 19: Installing The Battery

    INSTALLATION 3. Installing the battery ������� Battery generates explosive hydrogen 1 Place the battery box in a convenient gas. Be sure to: position away from possible water • Charge the battery in a well- spray. Securely fasten both the box ventilated place.
  • Page 20 INSTALLATION 2 Connect the positive lead (+) to the positive terminal (+) of the battery, and then connect the negative lead (−). When disconnecting the battery always remove the negative lead (−) first. After connecting the positive terminal (+), securely place a cap on it to prevent short circuits.

  • Page 21: Pre-Operating Preparations

    PRE-OPERATING PREPARATIONS ������ 1. Recommended gasoline types Consult an authorized dealer for details ������� on handling of gasoline, if necessary. Gasoline and its vapors are very Use of low-quality gasoline results in flammable and can be explosive. a short engine life as well as starting difficulties and other engine problems.
  • Page 22 ������� TOHATSU recommend the use of Do not fill the fuel tank over capacity. The rise of gasoline temperature may cause gasoline if its ethanol content is less gasoline to expand which, if overfilled, may...

  • Page 23: Recommended Engine Oil

    PRE-OPERATING PREPARATIONS Note 2. Recommended engine oil Use of engine oils that do not meet U s e a g e n u i n e e n g i n e o i l o r these requirements will result in reduced recommended one.
  • Page 24 PRE-OPERATING PREPARATIONS Engine oil – gasoline mixing procedure For quantities of engine oil and gasoline to be pre-mixed, refer to table in previous page. ������� ● Do not use other than two stroke engine oil with specified grade, or the engine may be damaged. ●...

  • Page 25: Break-In

    PRE-OPERATING PREPARATIONS 3. Break-in Your new outboard motor and lower ������� 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 26: Engine Operation

    ENGINE OPERATION 1 Loosen the air vent screw on the 1. Starting tank cap. ������� Air Vent Screw In case engine starts in gear, do not start cruising. Stop engine immediately and consult an authorized dealer. Note The engine will not start unless the switch lock has been properly connected into the emergency stop switch.
  • Page 27 ENGINE OPERATION MF and EF type 6 Pull out the choke knob all the way. (No choke operation is necessary 4 Place the shift lever in the Neutral when the engine is warm.) position. Be sure that the shift is in Neutral when starting the engine.
  • Page 28 ENGINE OPERATION 8 Stop pushing the key when the Note engine has started. The key returns to the original If use the choke knob for the engine start, push back it when the engine position, automatically. has started. 9 Returns the Free accel lever to close position.
  • Page 29 ENGINE OPERATION If the recoil starter fails to operate ������� • Remove the top cowl and the recoil Be careful that your clothes or other starter. Wrap a rope around the items do not get caught in the rotating starter pulley then pull quickly to engine parts.

  • Page 30: Warming Up The Engine

    ENGINE OPERATION Engine speed 2. Warming up the engine Idling speed after warming up. Warm the engine at low engine speeds Remark: In case of cold engine starting, for about three minutes. This allows the idling speed is increased about 300 lubricating oil to circulate to all parts rpm for several minutes.

  • Page 31: Forward And Reverse

    ENGINE OPERATION MF and EF type 3. Forward and reverse ������� Before shifting into forward or reverse, 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 32 ENGINE OPERATION EP type ������� Control lever Be sure to warm up engine well before starting cruise. Operating cold engine may cause damage to your motor. Lock button Note Neutral Idle speed may be higher during warming up of engine. If shifted to Forward or Reverse during warming up, it may be difficult to shift back to neutral.

  • Page 33: Stopping

    ENGINE OPERATION 4. Stopping Note The control lever is inoperative unless MF and EF type the free accel lever is in the fully closed position. Stop switch Note Reduce the engine speed when Stop switch the control lever is in Neutral and lock do not increase the engine speed unnecessarily.

  • Page 34: Trim Angle

    ENGINE OPERATION EP type 5. Trim angle The trim angle of the outboard motor can be adjusted to suit the transom angle of the hull, and load conditions. Choose an appropriate trim angle that will allow the anti ventilation plate to Stop run parallel to the water surface during switch...

  • Page 35: Tilt Up, Tilt Down And Shallow Water Operation

    ENGINE OPERATION 6. Tilt up, tilt down and shallow water operation ������� When tilting up or down, be careful not to place your hand between the swivel bracket and the stern bracket. Be sure to tilt the outboard motor Thrust rod down slowly.
  • Page 36 ENGINE OPERATION ■ Tilt down Slightly tilt the outboard motor up, and pull the tilt lever toward you to release the tilt-lock. Then lower the outboard Tilt Lever motor slowly. Tilt up position Shallow water operating position ������� • Do not put hand or finger in between outboard motor body and clamp bracket when adjusting trim angle to prevent injury in case the...
  • Page 37 ENGINE OPERATION ������� ������� • Run at lowest possible speed when While in shallow water drive position, using shallow water drive. do not operate the outboard motor in • Tilt lock is disabled when in shallow reverse. Operate the outboard motor water drive position.

  • Page 38: 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 motor.

  • Page 39: Trailering

    TRAILERING ������� ������� Do not go under outboard motor tilted When trailering the outboard motor up even if it is supported by support should be in a vertical (normal running) bar, or accidental fall of outboard motor position, fully down. Trailering in the could lead to severe personal injury.

  • Page 40: Adjustment

    ADJUSTMENT 1. Steering friction 2. Remote control lever load The steering friction can be adjusted (Throttle friction adjustment screw) in accordance with your preference by To adjust the load of the remote turning the steering adjusting bolt. control lever, turn the throttle friction adjustment screw on the front of Steering the remote control.

  • Page 41: Trim Tab Adjustment

    ADJUSTMENT ������� 4. Trim tab adjustment • Inappropriate adjustment of trim If straight-line cruising can not be tab could cause steering difficulty. achieved, adjust the trim tab located After installing or readjusting trim under the anti-ventilation plate. tab, check if steering load is even. •...

  • Page 42: Inspection And Maintenance

    INSPECTION AND MAINTENANCE 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 maintenance schedules that follow. ������� • Your personal safety and that of your passengers depends on how well you maintain your outboard motor.

  • Page 43: Daily Inspection

    INSPECTION AND MAINTENANCE 1. Daily inspection Perform the following checks before ������� 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 Action...
  • Page 44 INSPECTION AND MAINTENANCE Washing outboard motor ■ Use flushing plug. 1 Remove propeller (refer to Propeller If outboard motor is used in salt water, Replacement). Remove the water brackish water or water with a high plug from the motor, and screw in acidic level, use fresh water to remove the flushing plug.

  • Page 45: Replacing The Propeller

    INSPECTION AND MAINTENANCE Replacing the propeller Propeller shaft A worn-out or bent propeller will lower Propeller the motor's performance, and cause engine trouble. Before removing the propeller, remove the spark plug caps from the spark plugs to protect against personal injury. Split pin Propeller �������...
  • Page 46 INSPECTION AND MAINTENANCE Replacing the spark plugs Use spark plugs (NGK B7HS-10 or BR7HS-10) or recommended ones. ������� Spark gap : 0.9 - 1.0mm • Do not reuse spark plug with damaged (0.035 - 0.039 in) Electrode insulation, or sparks can leak through crack, potentially leading to electric shock, explosion and/or fire.
  • Page 47 INSPECTION AND MAINTENANCE Replacing the anode A sacrificial anode protects the outboard motor from galvanic corrosion. Anode is located on the gear case, clamp bracket and the cylinder. When the anode is eroded more than 2/3, replace it. Notes • Never grease or paint the anode. •...

  • Page 48: 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 49 INSPECTION AND MAINTENANCE ■ Fuel filter (for engine) Note Remove the cap, then clean the fuel filter in the engine. Also, your outboard motor should receive careful, and complete, Fuel pipe Fuel pump inspection at 300 hours. This is the best time for major maintenance procedures to be carried out.
  • Page 50 INSPECTION AND MAINTENANCE Replacing gear oil 2 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. • Be sure that outboard motor is secured to transom or service �������...

  • Page 51: Off-Season Storage

    INSPECTION AND MAINTENANCE 3 Install the upper oil plug, and then 3. Off-season storage remove oil tube nozzle and install the lower oil plug. Before you put your outboard motor in storage, it is a good opportunity to have it serviced and prepared by your Oil plug dealer.
  • Page 52 INSPECTION AND MAINTENANCE Electric Starter Motor to the carburetors. Turn the engine over several times while feeding the Coat the internal pinion gears and the oil into it and make sure it is evenly shaft of the electric starter motor with distributed.

  • Page 53: Pre-Season Check

    INSPECTION AND MAINTENANCE 4. Pre-season check Specific Terminal Charge Gravity at 20 °C Voltage (V) Condition 1 Check that the shift and throttle Fully 1.120 10.5 discharged function properly. (Be sure to turn the propeller shaft 1.160 11.1 1/4 charged when checking the shift function or else 1.210 11.7...

  • Page 54: Motor Submerged In Water

    INSPECTION AND MAINTENANCE 5. Motor submerged in water 6. Cold weather precautions After taking your outboard motor out of If you moor your boat in cold weather the water, immediately take it to your at temperatures below 0˚C (32˚F), there dealer.

  • Page 55: Checking After Striking Underwater Object

    INSPECTION AND MAINTENANCE 7. Checking after striking underwater object Striking the sea bottom or an underwater o b j e c t m a y s e v e r e l y d a m a g e t h e outboard motor.

  • Page 56: 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 57 TROUBLESHOOTING Possible cause Loose battery terminal connection, corrosion ● EP and EF Discharged battery ● types Main switch trouble ● Lock plate not fitted to stop switch ● Disconnection of wire or loose ground connection ● Insufficient battery capacity, loose terminal EP and EF ●...

  • Page 58: Tool Kit And Spare Parts

    TOOL KIT AND SPARE PARTS TOOL KIT AND SPARE PARTS The following a list of the tools and spare parts provided with the motor. Items Quantity Remark Tool Bag Pliers 10 X 13 mm Socket Wrench 21mm Service Tools Socket Wrench Socket Wrench Handle Cross- and straight-point Screwdrivers...

  • Page 59: Optional Accessories

    OPTIONAL ACCESSORIES OPTIONAL ACCESSORIES Alternator (12V, 80W) (for lamp in run mode only) Extension cord for light Tachometer (Lights are available on the market.) Genuine grease (250g) Genuine gear oil (500mL) Touch-up Paint Flushing plug Vertical starter Genuine Engine Oil (0.4L, 1L, 4L, 20L) Rectifier (for charging battery 12V) Alternator Battery or lamp...

  • Page 60: 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. Recommended range at WOT: 6B • 8B = 4,500 to 5,500 rpm 9.8B = 5,000 to 6,000 rpm Propeller Size...
  • Page 61 M E M O...
  • Page 62 M E M O...
  • Page 64 OWNER’S MANUAL TOHATSU CORPORATION 9.8B Address : 5-4, 3-chome, Azusawa, Itabashi-ku, TOKYO, 174-0051 JAPAN Phone : TOKYO (03)3966-3117 FAX : TOKYO (03)3966-2951 Website : www.tohatsu.co.jp 003-11029-B 1101NB Printed in Japan...

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M8bM9.8b

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