TOHATSU M 6B, M8B, M9.8B Owner's Manual

OWNER’S
MANUAL
M 6B
8B
9.8B
OB No.003-11029-D
READ TH IS M ANUAL BEF ORE USI NG T HE OUTBOARD MOTOR . FAILUR E TO FOLLOW T HE
!
INS TRUC TIO NS AND SA FET Y P REC AUTIO NS IN TH IS MANUAL CAN RE SULT IN SER IOU S 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 permission of Tohatsu Corporation.

YOUR TOHATSU OUTBOARD MOTOR

OWNER REGISTRATION AND IDENTIFICATION
Upon purchasing this product, be sure that the WARRANTY CARD is correctly and completely filled out and mailed to the addressee noted there on. This WARRANTY CARD identifies you as the legal owner of the product and serves as your warranty registration.
TO
THE EXTENT PERMITTED BY APPLICABLE LAW, YOUR OUTBOARD MOTOR 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.
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 in the event of theft or to quickly identifying the outboard motor type.
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. Th
is manual should be read in its entirety and the inspection and maintenance procedures described later in this manual should be followed carefully. Should a problem arise with the outboard motor, please follow the troubleshooting procedures listed at the end of this manual. If the problem persists, contact an authorized TOHATSU service shop or dealer.
We
hope
adventures.
you will enjoy your outboard motor and wish you good luck in your boating
TOHATSU CORPORATION

CONTENTS

GENERAL SAFETY INFORMATION
1
SPECIFICATIONS
2
NAMES OF PARTS
3
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. Mounting the outboard motor on boat
2. Installing the remote control devices
3. Installing the battery
4
PRE-OPERATING PREPARATIONS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1. Recommended gasoline types
2. Recommended engine oil
3. Break-in
5
ENGINE OPERATION
1. Starting
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Warming up the engine
3. Forward and reverse
4. Stopping
5. Trim angle
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6. Tilt up, tilt down and shallow water operation
6
REMOVING AND CARRYING THE OUTBOARD MOTOR
1. Removing the outboard motor
2. Carrying the outboard motor
3. Storing the outboard motor
7
TRAILERING
8
ADJUSTMENT
1. Steering friction
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2. Remote control lever load
3. Throttle grip
4. Trim tab adjustment
9
INSPECTION AND MAINTENANCE
1. Daily inspection
2. Periodic inspection
3. Off-season storage
4. Pre-season check
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5. Motor submerged in water
6. Cold weather precautions
7. Checking after striking underwater object
10
TROUBLESHOOTING
11
TOOL KIT AND SPARE PARTS
12
OPTIONAL ACCESSORIES
13
PROPELLER TABLE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . .
8 10 11 14 14 16 19 21 21 23 25 26 26 30 31 33 34 35 38 38 38 38 39 40 40 40 40 41 42 43 48 51 53 54 54 55 56 58 59 60
INDEX
GENERAL SAFETY INFORMATION
7
1. SPECIFICATIONS
2. NAMES OF PARTS
3. INSTALLATION
4.PRE-OPERATING PREPARATIONS
5.ENGINE OPERATION
REMOVING AND CARRYING THE OUTBOARD MOTOR
6.
7.TRAILERING
8.ADJUSTMENT
9.INSPECTION AND MAINTENANCE
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10.TROUBLESHOOTING
11.TOOL KIT AND SPARE PARTS
12.OPTIONAL ACCESSORIES
13.PROPELLER TABLE
10
10
11
11
12
12
13
13
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8

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," "WARNING," "CAUTION," and "Note." Always pay special attention to such information to ensure safe operation of the outboard motor at all times.
Failure to observe will result in severe personal injury or death, and possibly property damage.
Failure to observe could result in severe personal injury or death, or property damage.
Failure to observe could result in personal injury or property damage.
Note
This instruction provides special information to facilitate the use or maintenance of the outboard motor or to clarify important points.
EMERGENCY STOP SWITCH
The Emergency Stop Switch will stall the outboard motor when the stop switch tether is pulled off. This stop switch tether can be attached to the operator of the outboard motor to minimize or prevent injuries from the propeller in case the operator falls overboard. We highly recommend use of the Emergency Stop Switch tether.
Accidental activation of the Emergency Stop Switch (such as the tether being pulled out in heavy seas) could cause passengers to lose their balance and even fall overboard, or it could result in loss of power in heavy seas, strong currents, or high winds. Loss of control while mooring is another potential hazard. To minimize accidental activation of the Emergency Stop Switch, the 500 mm (20 inch.) stop switch tether is coiled and can extended to a full 1,300 mm (51 inch.).
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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. To learn about the correct operation and maintenance of the outboard motor, please read through this manual carefully. I
t
is very difficult for a person standing or floating in the water to take evasive action should he or she see a power boat heading in his /her direction, even at a slow speed. Therefore, when your boat is in the immediate vicinity of people in the water, the outboard motor should be shifted to neutral and shut off.
SERIOUS INJURY IS LIKELY IF A PERSON IN THE WATER MAKES CONTACT WITH A MOVING BOAT, GEAR HOUSING, PROPELLER, OR ANY SOLID DEVICE RIGIDLY ATTACHED TO A BOAT OR GEAR HOUSING.
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.
9
MAINTENANCE
As the owner of this outboard motor, you should be acquainted with correct maintenance procedures. It is the operator's responsibility to perform all safety checks and to ensure that all lubrication and maintenance instructions are complied with for safe operation. Please comply with all instructions concerning lubrication and maintenance. You should take the engine to an authorized dealer or service shop for periodic inspection at the prescribed intervals. Correct chance of problems and limit overall operating expenses.
MOUNTING
Outboard motor mounting must be performed by trained service person(s) using lift or hoist with sufficient capacity.
periodic
maintenance and proper care of this outboard motor will reduce the
10

SPECIFICATIONS

6B MF, 8B MF, 8B EF, 8B EP, 9.8B MF, 9.8B EF, 9.8B EP
1
MODEL
Item
Overall Length mm (in)
Overall Width mm (in)
Overall
Height
Transom
Height
Weight
Output kW (Hp) 4.4 (6) 5.9 (8) 7.2 (9.8)
Max. Operating Range
Idle
Speed
Number of Cylinder 2
Piston Displacement
mL (Cu in)
Bore x Stroke mm (in) 50 x 43 (1.97 x 1.69)
Exhaust System Through hub exhaust
Lubrication System Engine Oil Mixed Gasoline
Cooling System Forced water cooling
Starting System Manual
Ignition System Flywheel Magneto C.D. Ignition
Spark Plug BP7HS-10 or BPR7HS-10
Trim Position 6
Fuel Mixing Ratio Unleaded Gasoline 50 : Genuine 2-stroke Engine Oil 1
Gear Oil Genuine Gear Oil or API GL5, SAE #80 to #90, approx. 320mL
Fuel Tank Capacity
L (US gal)
Gear Reduction Ratio 2.08 (13 : 27)
S mm (in) 996 (39.2)
L mm (in) 1,123 (44.2)
UL mm (in)) 1,250 (49.2)
S mm (in) 435 (17.2)
L mm (in) 562 (22.2)
UL mm (in)) 689 (27.1)
S kg (lb) 26 (57) 29 (64) 28.5 (63) 26 (57) 29 (64) 28.5 (63)
L kg (lb) 27 (60) 30 (66) 29.5 (65) 27 (60) 30 (66) 29.5 (65)
UL kg (lb) 28 (62) 31 (68) 30.5 (67) 28 (62) 31 (68) 30.5 (67)
Forward Gear rpm 750
Neutral Gear rpm 950
6B MF 8B MF 8B EF 8B EP 9.8B MF 9.8B EF 9.8B EP
793 (31.2) 505 (19.9) 793 (31.2) 505 (19.9)
320 (12.6) 275 (10.8) 320 (12.6) 275 (10.8)
rpm 4,500 – 5,500 5,000 – 6,000
169 (10.3)
Electric starter motor* Manual Electric starter motor*
12 (3.17)
* : with manual
Specifications subject to change without notice.
Remark :

NAMES OF PARTS

6
1
2
3
4
5
7
8
9
0
q
w
e
r
t
y
u
i
o
p
a
s
f
d
g
h
j
k
6B MF, 8B MF, 9.8B MF
NAMES OF PARTS
11
2
1
Tilt Handle
2
Top Cowl
3
Bottom Cowl
4
Cooling Water Check Port
5
Tilt Stopper
6
Drive Shaft Housing
7
Water Plug
8
Anti Ventilation Plate
9
Anode / Trim Tab
0
Propeller
q
Starter Handle
w
Shift Lever
e
Throttle Grip
r
Clamp Screw
t
Clamp Bracket
y
Thrust Rod
u
Oil Plug (Upper)
i
Water Inlet
o
Oil Plug (Lower)
p
Stop Switch
a
Choke Knob
s
Fuel Connector
d
Primer Bulb
f
Fuel Tank
g
Fuel Tank Cap
h
Air Vent Screw
j
Fuel Connector
k
Fuel Pick up Elbow
2
6
1
2
3
4
5
7
8
9
0
q
w
e
r
t
y
u
i
o
a
sp
d
f
h
g
j
k
l
;
NAMES OF PARTS
12
8B EF, 9.8B EF
1
Tilt Handle
2
Top Cowl
3
Bottom Cowl
4
Cooling Water Check Port
5
Tilt Stopper
6
Drive Shaft Housing
7
Water Plug
8
Anti Ventilation Plate
9
Anode / Trim Tab
0
Propeller
q
Starter Handle
w
Shift Lever
e
Throttle Grip
r
Clamp Screw
t
Clamp Bracket
y
Thrust Rod
u
Oil Plug (Upper)
i
Water Inlet
o
Oil Plug (Lower)
p
Choke Knob
a
Stop Switch
s
Main Switch
d
Fuel Connector
f
Battery Cord
g
Primer Bulb
h
Fuel Tank
j
Fuel Tank Cap
k
Air Vent Screw
l
Fuel Connector
;
Fuel Pick up Elbow
8B EP, 9.8B EP
k
l
;
z
6
1
2
3
4
5
7
8
9
0
q
w
e
r
t
y
u
i
o
p
a
d
s
f
g
h
j
NAMES OF PARTS
13
2
1
Tilt Handle
2
Top Cowl
3
Bottom Cowl
4
Cooling Water Check Port
5
Tilt Stopper
6
Drive Shaft Housing
7
Water Plug
8
Anti Ventilation Plate
9
Anode / Trim Tab
0
Propeller
q
Starter Handle
w
Shift Lever
e
Clamp Screw
r
Clamp Bracket
t
Thrust Rod
y
Oil Plug (Upper)
u
Water Inlet
i
Oil Plug (Lower)
o
Choke Knob
p
Fuel Connector
a
Battery Cord
s
Primer Bulb
d
Fuel Tank
f
Fuel Tank Cap
g
Air Vent Screw
h
Fuel Connector
j
Fuel Pick up Elbow
k
Remote Control
l
Main Switch
;
Stop Switch
z
Cord Assembly
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Boat Transom
Center of Boat
Bottom of hull
Anti Ventilation Plate
30-50 mm (1.2-2 in)
Clamp screw
14

INSTALLATION

3
1.

Mounting the outboard motor on boat

Most boats are rated and certified in terms of their maximum allowable horsepower, as shown on the boat’ s certification plate. Do not equip your boat with an outboard motor that exceeds this limit. If in doubt, contact your dealer. Do not operate the outboard motor until it has been securely mounted on the boat in accordance with the instructions below.
Installation
Single-engine Installation
Set engine at center of boat.
Transom matching
1
Be sure that the anti ventilation plate of the outboard motor is 30-50mm (1.2-2 in) below the bottom of hull.
f the above condition cannot be
I met due to the shape of the bottom of your boat, please consult your authorized dealer.
2
To boat, tighten the clamp screws by turning their handles.
ls o , us e the bo lt s t o se c ur e
A the outboard motor brackets on transom board.
ecure the outboard motor with a
S rope to prevent loss overboard.
the outboard motor to the
attach
Note
A rope is not included in the standard accessories.
INSTALLATION
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15
• Before beginning the running test, check that the boat with maximum capacity loading floats on the water in a proper attitude. Check the position of water surface on the driveshaft housing. If the water surface is near the bottom cowling, in high waves, water may enter the engine cylinders.
• Incorrect outboard motor mounting height or existence of under water object (s), such as hull bottom design, bottom surface conditions or underwater accessories, can cause water spray possibly reaching the engine through an opening of the bottom cowling during cruising. Exposing the engine to such conditions for extended periods can lead to severe engine damage.
Mounting bolts should be installed with the bolt head at inside surface of the transom. Mounting bolts installed with the threaded end at the inside surface of the transom can cause personal injury.
Mounting the outboard motor without following this manual can lead to unsafe conditions such as poor maneuverability, lack of control or fire.
Loose clamp screws and/or mounting bolts can lead to the release or displacement of the outboard motor, possibly resulting in lost of control and/ or serious personal injury. Be sure that fasteners are tightened to the specified torque (30 Nm (3.0kgf) 13ft·lb). Check the fasteners for tightness from time to time.
Be sure to use outboard mounting fasteners included in the outboard motor package or their equivalents in terms of size, material, quality and strength.
Tighten fasteners to the specified
torque (30 Nm (3.0kgf) 13ft·lb). Test cruise to check if fasteners are tightened securely.
Outboard motor mounting must be performed by trained service person(s) using lift or hoist with sufficient capacity.
3
Notes
1. Apply sealing agent, such as silicone sealed between the bolts and the transom board holes before tightening the bolts.
2. Be sure to tighten the mounting bolt nuts to the specified torque.
(30 Nm (3.0kgf)13ft · lb)
3
Ball holder
Holder cap
Spring
Washer
Nut
Cable outer groove
Throttle cable
Spring
Nut
Cable outer groove
Shift cableSpring pin
Lock pin
Sleeve B guide
INSTALLATION
16
2.

Installing the remote control devices

It is recommended that you consult wi t h yo u r au t h o r i z e d de a l er fo r installation adjustment of the remote control device.
Installation of the Remote Control
Cables (Box side) :
F
oll o w th e inst r u ct i o n ma n ua l
provided with the remote control.
Installation of the Remote Control
on your boat :
F
oll o w th e inst r u ct i o n ma n ua l
provided with the remote control.
Installation of the Remote Control
Cable (engine side) and the Cord Assembly (Wiring Harness) :
1
F
tting of holder cap and sleeve B
i
guide
Th
rottle side......Fit the holder cap
to the end of the cable and fix it by the nut.
Shift
side......Fit the sleeve B guide
to the end of the cable and fix it by the nut.
2
tting of Remote Control Cable to
Fi Engine
Th
rot tl e si de ......Set the throttle
cable to the cable clip and then connect the holder cap to the ball joint of throttle lever.
S
h
ift side......Set the shift cable to
the cable clip and then insert the lock pin at the shift lever fitting hole and turn it 90° to lock it.
INSTALLATION
Shlft Lever
Sleeve B gulde: fit it to remove control cable and flt it to shift lever
Holder Cap: fit it to remove control cable and flt it to ball joint
Cable clip
Shlft cable
To C.D. unlt
Connect it to lead wlre of remote controf box
Cable outer groove
Steerfng Hook plate
Remote control stop cord (excluded from fining pans)
Throttle lever
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17
3
Put the control lever in the Neutral position and the free accel lever in the fully closed position.
Length of Remote Control Cable depends on a size of a boat.
Be careful not to loop remote control cables to diameter of 406 mm (16 inches) or less.
Note
Note
Confirm whether the engine side shift is in gear when shifting the control lever of the remote control to its first position in Forward or Reverse (about 32°) and whether the throttle of the carburetor is fully open when shifting the lever further. Confirm whether the carburetor’s throttle is fully closed when the control lever is shifted to the Neutral position. If it is not, adjust the position of the ball holder.
Note
3
Choke solenoid
Starter solenoid
Clamp
Clamp
Clamp
Rectifier
Single remote Control box (RC 5C)
Cord assembly
Air silencer
Battery Cord
Fuse wire
Blue
Blue
G
G
G
R
R
B
B
B
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INSTALLATION
18
3
Connecting the Cord Assembly (Wiring Harness)
P
ass 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.
Do not disconnect the cord assembly when the outboard motor is in operation or you will lose control of the outboard motor.
3. Installing the battery
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INSTALLATION
19
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.
Note
Minimum recommended battery : 12V, 40AH (465 Marine Cranking Amps (MCA) or 350 Cold Cranking Amps (CCA)) Specifications and features of batteries vary among the manufacturers. Consult the manufacturer for details.
Batter y electrolyte contains sulfuric acid and thus is hazardous, causing a burn if it comes in contact with your skin, or poisonous if swallowed. KEEP BATTERY AND ELECTROLYTE AWAY FROM REACH OF CHILDREN When handling the battery, be sure to:
• Read all warnings shown on the batter y case
• Prevent electroly te from coming in contact with any part of your body. Contact can cause serious burn or, if it comes in contact with your eye, loss of sight. Use safety glasses and rubber gloves.
In case battery electrolyte comes in contact with:
• Skin, flush thoroughly with water.
• Eye, flush thoroughly with water, and then seek immediate medical treatment.
In case battery electrolyte is swallowed:
• Seek immediate medical treatment.
Batter y generates explosive hydrogen gas. Be sure to:
• Charge the battery in a well­ventilated place.
• Place the battery away from any source of fire, sparks and open flames such as burners or welding equipment.
• Do not smoke when handling the batter y.
• Do not smoke near the battery when the battery is charging.
• Make sure that the battery cords do not get stuck between the outboard motor and boat when turning, etc.
• The star ter motor may fail to operate if the cords are incorrectly connected.
• Be sure to correctly connect the (+) and (−) cords. If not, the charging system will be damaged.
• Do not disconnect the battery cords from battery while the engine is operating, the electrical par ts could be damaged.
• Always use a fully charged battery.
Do not use a battery that is not recommended. Use of a battery not recommended can lead to poor performance of, and/or damage to, the electrical system.
3
3
Battery cable
(black)
Battery cable
(red)
INSTALLATION
20
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.
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