TOHATSU MFS 40A User manual

TOHATSU CORPORATION
Address : 5-4, Azusawa 3-Chome, Itabashi-Ku,
Tokyo, Japan
Phone : TOKYO [phone]
FAX : TOKYO [phone]
URL : www.tohatsu.co.jp
40A
50A
MFS
OB No.003-11106-1
003-11106-1 1412NB
Printed in Japan
40A
50A
MFS
en
OWNER’S MANUAL
fr
MANUEL
DE L’UTILISATEUR
es
MANUAL
DEL PROPIETARIO
de
BENUTZERHANDBUCH
en
OWNER’S MANUAL
fr
MANUEL DE L’UTILISATEUR
es
MANUAL DEL PROPIETARIO
de
BENUTZERHANDBUCH
MFS4050A_EUR_cover_150113.indd 1 15.1.13 9:23:54 AM

B15__US_EN_141125N.book 1 ページ ２０１４年１１月２６日 水曜日 午前９時５８分

MANUAL
40A
50A
MFS
OWNER’S
OB No.003-11106-1
Original instructions
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

ENOM00001-0
READ THIS MANUAL BEFORE USING THE OUTBOARD MOTOR. FAILURE TO FOLLOW THE
INSTRUCTIONS AND SAFETY PRECAUTIONS IN THIS MANUAL CAN RESULT IN SERIOUS
INJURY OR DEATH. KEEP THIS MANUAL IN A SAFE LOCATION FOR FUTURE REFERENCE.
Copyright © 2015 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.
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

3
YOUR TOHATSU OUTBOARD MOTOR
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. 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.
Please always keep this manual together with the outboard motor as a reference to every-
one who uses the outboard motor. If the outboard motor is resold, make sure the manual
is passed on to the next owner.
We hope you will enjoy your outboard motor and wish you good luck in your boating
adventures.
TOHATSU CORPORATION
ENOM00002-0
OWNER REGISTRATION AND IDENTIFICATION
Upon purchasing this product, be sure that the WARRANTY CARD is correctly and com-
pletely 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.
ENOM00003-0
PRE-DELIVERY CHECK
Be sure that the product has been checked by an authorized TOHATSU dealer before you
take delivery.
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

4
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.
Serial Number:
Serial Number: Date of purchase:
ENOF00800-0 ENOF00801-0
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

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,” “CAUTION,” and “Note.” Always pay special attention to such information to
ensure safe operation of the outboard motor at all times.
ENOW00001-0
Failure to observe will result in severe personal injury or death, and possibly property dam-
age.
ENOW00002-0
Failure to observe could result in severe personal injury or death, or property damage.
ENOW00003-0
Failure to observe could result in personal injury or property damage.
ENON00001-0
Note
This instruction provides special information to facilitate the use or maintenance of the outboard
motor or to clarify important points.
DANGER
WARNING
CAUTION
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

1. GENERAL SAFETY INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
2. SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
3. PARTS NAME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4. LABEL LOCATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
5. INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
1. Mounting the outboard motor on boat . . . . . . . . . . . . . . . . . . . . . . . . . . .20
2. Remote control device installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
3. Battery installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
4. Propellor installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5. TOCS (Tohatsu Onboard Communication System) installation. . . . . . . . . 25
6. PRE-OPERATING PREPARATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
1. Fuel handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
2. Fuel filling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
3. Engine oil recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
4. Break-In . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
5. Warning system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
7. ENGINE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Before starting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34
1. Fuel feeding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35
2. Starting the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
3. Warming up the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
4. Forward, reverse, and acceleration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40
5. Stopping the engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
6. Steering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45
7. Trim angle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46
8. Tilt up and down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
9. Shallow water operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
8. REMOVING AND CARRYING THE OUTBOARD MOTOR. . . . . . . . . . . . . . 52
1. Removing the outboard motor. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
2. Carrying the outboard motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
3. Traillering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53
9. ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
1. Steering friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
2. Throttle grip friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
3. Remote control lever friction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .55
4. Trim tab adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
10. INSPECTION AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
1. Daily Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
2. Periodic Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .63
3. Off-season storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .75
4. Pre-season check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
5. Submerged outboard motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78
6. Cold weather precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
CONTENTS
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

7. Striking underwater object. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .79
11. TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
12. TOOL KIT AND SPARE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
13. PROPELLER TABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

9
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.PROPELLER TABLE
INDEX
2
14
3
4
5
6
7
8
9
10
11
12
13
14
1
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

10
1
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. To learn about the correct operation and maintenance of the outboard motor,
please read through this manual carefully.
It 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.
ENOW00005-0
SERIOUS INJURY IS LIKELY IF A PERSON IN THE WATER MAKES CONTACT WITH A MOV-
ING BOAT, GEAR HOUSING, PROPELLER, OR ANY SOLID DEVICE RIGIDLY ATTACHED TO
A BOAT OR GEAR HOUSING.
ENOM0008-A
EMERGENCY STOP SWITCH
The Emergency Stop Switch will stall the outboard motor when the stop switch lanyard is
pulled off. This stop switch lanyard has to be attached to the operator of the outboard
motor to minimize or prevent injuries from the propeller in case the operator falls over-
board.
It is operator’s responsibility to use the Emergency Stop Switch Lanyard.
ENOW00004-A
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 lanyard is coiled and can extended to a full 1300 mm (51 inch.).
ENOM00800-A
PERSONAL FLOATATION DEVICE
As the operator/driver and passenger of the boat, you are responsible to wear a PFD (Per-
sonal Floatation Device) while on the boat.
WARNING
WARNING
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

GENERAL SAFETY INFORMATION 11
1
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 following maintenance section of this manual (See page 57). It is the opera-
tor's responsibility to perform all safety checks and to ensure that all lubrication and main-
tenance 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 periodic maintenance and proper care of this outboard motor will reduce the
chance of problems and limit overall operating expenses.
Carbon Monoxide Poisoning Hazard
Exhaust gas contains carbon monoxide, a colorless and odorless gas which can be fatal if
inhaled for any length of time.
Never start or operate the engine indoors or in any space which is not well ventilated.
Gasoline
Gasoline and its vapors are very flammable and can be explosive. Use extreme care when
handling gasoline. You should be thoroughly knowledgeable on how to correctly handle
gasoline by reading this manual.
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

12
2
SPECIFICATIONS
ENOM00810-A
MODEL FEATURE
(z)These models can be purchased with remote rigging kit or multi function tiller handle.
ENOM00811-A
MODEL NAME EXAMPLE
F 50A ETL
Model F40A F50A
Type ET EG ET EG
Transom heights
Sz z z z
Lz z z z
Tiller Handle (z)z(z)z
Remote Control (z) (z)
Power Trim & Tilt z z
Gas-assisted tilt z z
F50 A E T L
Model descrip-
tion Horse power Product gener- ation Starter system Tilt system Shaft length
F= Four stroke
D= Two stroke DI -A and up E= Electrical start Blank= Manual start
T= Power trim&tilt
G= Gas assist
Blank= Manual tilt
S= Short 15 in
L= Long 20 in
UL= Ultra long 25 in
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

SPECIFICATIONS 13
2
ENOM00013-0
ET, EG
Item MODEL
F40A/50A
ET
(with RC)
ET (with
multifunction
tiller handle)
EG (with
multifunction
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) 405 (15.9) 538 (21.2)
Weight* S kg (lb) 95 (209) 100 (220) 97.5 (215)
L kg (lb) 97 (214) 102 (225) 99.5 (219)
Max. Output kW (ps) 40A : 29.4 (40) 50A : 36.8 (50)
Max. Operating Range rpm 5000–6000
Idle Speed rpm 850
Engine Type 4-Stroke EFI
Number of Cylinder 3
Bore × Stroke mm (in) 70 × 75 (2.76 × 2.96)
Piston Displacement mL (Cu in) 866 (52.8)
Exhaust System Through hub exhaust
Cooling System Water cooling (with thermostat)
Engine Lubrication Wet sump (Trochoid pump)
Starting System Electric starter motor
Ignition System Battery ignition
Spark Plug NGK DCPR6E
Alternator A21
Trim position 4
Trim angle Degree 8-20
Tilt up angle Degree 74 68
Steering angle Degree 70
Engine Oil Grade API standard SH, SJ, SL 10W-30/40
ml (US qt) 2200 (2.3)
Gear Oil Grade Genuine Gear Oil or API GL5,SAE #80-90
ml (US qt) 500 (0.53)
Fuel Unleaded regular gasoline : Pump posted
87 Octane (research octane rating of 91)
Fuel Tank Capacity L (US gal) 25 (6.60)
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

SPECIFICATIONS14
2
Remark: Specifications subject to change without notice.
*Without propeller, with battery cable.
Tohatsu outboard is power rated in accordance with ISO8665 (propeller shaft output).
Gear shift Dog clutch ( F-N-R)
Gear Reduction Ratio 2.08 (3:27)
Battery
12V 100AH/5HR, 850 CCA
Cold weather
specification 12V 120AH/5HR, 1000 CCA
TachometerPoleSetting 4
Emission Control System MFI (Multiport Fuel Injection - EFI Electronic Fuel Injection)
Operator Sound Pressure
(ICOMIA 39/94 Rev.1) dB (A) 81.8
Hand Vibration Level
(ICOMIA 38/94 Rev.1) m/sec2 –2.9
Item MODEL
F40A/50A
ET
(with RC)
ET (with
multifunction
tiller handle)
EG (with
multifunction
tiller handle)
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

15
3
1
2
3
4
5
6
7
27
29
8
16
15
14
13
12
11
10
9
30
28
31
32
33
34
35
36
18
25
24 23
22
21
20
19 26
37
17
ENOF00820-A
PARTS NAME
ENOM00820-0
ET, EG (with multi-function tiller handle)
1 Tilt Handle
2 Top C owl
3 Bottom Cowl
4 Cooling Water
Check Port
5 Drive Shaft
Housing
6 Anode
7 Trim Tab
8 Propeller
9 Oil Plug (Lower)
10 Cooling Water
Inlet
11 Oil Plug (Upper)
12 Anti-ventilation
Plate
13 Splash Plate
14 Anode
15 Thrust Rod
16 Clamp Bracket
17 Steering Friction
Lever
18 Main Switch Key
19 Shift Lever
20 Tiller Handle
21 Throttle Grip
22 PTT Switch
23 Warning Lamp
24 Stop Switch
25 Stop Switch
Lanyard
26 Oil Filler Cap
27 Spark Plug
28 Oil Level Gauge
29 Cowl Hook Lever
30 Idle Port
31 Manual Valve*
32 Oil Filter
33 Fuel Filter
34 Flushing
Connector Cap
35 PTT Switch*
36 Oil Drain Bolt
37 Throttle Friction
Screw
*: Only for ET model
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

PARTS NAME16
3
3
1
2
4
5
6
7
8
10
9
14 13
12
11
ENOF00127-C
ENOM00822-0
Remote control box & Fuel tank
1 Control Lever
2 Neutral lock arm
3 PTT switch
4 Free throttle lever
5 Main switch
6 Stop switch
7 Stop switch lock
8 Stop switch lanyard
9 Fuel gauge
10 Air vent screw
11 Fuel tank cap
12 Fuel connector (Engine side)
13 Primer bulb
14 Fuel connector (Fuel tank side)
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

17
4
LABEL LOCATIONS
ENOM00019-A
Warning label locations
1
3
2
8
9
7
6
5
4
ENOF00127-D
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ

LABEL LOCATIONS18
4
1. Warning label urge to read the owner’s
manual .
2-1. Warning regarding emergency start-
ing (See page 38).
2-2. Warning regarding high temperature.
2-3. Warning regarding rotating object.
2-4. Warning regarding high voltage
For tiller handle model
3. Indicator label regarding engine failure/
malfunction (See page 32).
For tiller handle model
4. Warning label regarding stop switch
(See page 36 and page 38)
For RC model
5. Warning label regarding stop switch
lanyard.
6. Warning regarding gasoline.
7. Warning regarding gasoline (See
page 27).
8. Warning regarding gasoline (See
page 27).
9. Warning regarding gasoline (See
page 27).
ENOF00120-0
ENOF00005-Q
4
3
2
1
ENOF00005-C
ENOF00005-P
ENOF00005-D
ENOF00005-E
ENOF00005-L
ENOF00005-M
ENOF00005-F
0)6$B(85B(1B1ERRN࣮࣌ࢪ㸰㸮㸯㸳ᖺ㸯᭶㸯㸱᪥ࠉⅆ᭙᪥ࠉ༗๓㸯㸯󰪍㸲㸱ศ