YAMAHA 50G, 60F, 70B, 75C, 90A PARTS CATALOGUE
50G, 60F, 70B,
75C, 90A
SERVICE
MANUAL
6H2-28197-Z9-11
E
NOTICE
This manual has been prepared by the Yamaha Motor Company Ltd. primarily for use by
Yamaha dealers and their trained mechanics when performing maintenance procedures and
repairs to Yamaha equipment. It has been written to suit the needs of persons who have a
basic understanding of the mechanical and electrical concepts and procedures inherent in the
work, for without such knowledge attempted repairs or service to the equipment could render
it unsafe or unfit for use.
Because the Yamaha Motor Company Ltd. has a policy of continuously improving its products, models may differ in detail from the descriptions and illustrations given in this publication. Use only the latest edition of this manual. Authorized Yamaha dealers are notified
periodically of modifications and significant changes in specifications and procedures, and
these are incorporated in successive editions of this manual.
A10001-0*
50G, 60F, 70B, 75C, 90A
SERVICE MANUAL
1999 Yamaha Motor Co., Ltd.
1st Edition, February 1999
No part of this publication may be
reproduced or transmitted in any form or by
any means including photocopying and
recording without the written permission of
the copyright holder. Such written
permission must also be obtained before
any part of this publication is stored in a
retrieval system of any nature.
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A50000-0
HOW TO USE THIS MANUAL
MANUAL FORMAT
This manual provides the mechanic with descriptions of the operations of disassembly,
repair, assembly, adjustment and inspection, each of which is presented in a sequential, stepby-step procedure.
To assist you to find your way about this manual, the Section Title and Major Heading is
given at the head of every page.
An Index to contents is provided on the first page of each section.
MODEL INDICATION
Multiple models are shown in this manual. These indications are noted as follows.
Model name 50GETO 60FEHTO 60FED 60FEDO 60FET 60FETO 70BEDO 70BETO
USA and
Canada name
Indication 50GETO 60FEHTO 60FED 60FEDO 60FET 60FETO 70BEDO 70BETO
Model name 75CET 75CETO 75CEHTO 80AETO 90AEHD 90AED 90AET 90AETO
USA and
Canada name
Indication 75CET 75CETO 75CEHTO 80AETO 90AEHD 90AED 90AET 90AETO
— P60TH C60ER — C60TR — — 70TR
C75TR 75TR P75TH — — — C90TR
90TR
B90TR
THE ILLUSTRATIONS
Some illustrations in this manual may differ from the model you have. This is because the
procedure described may relate to several models, though only one may be illustrated. (The
name of the model described will be mentioned in the description.)
To help you identify components and understand the correct procedures of disassembly and
assembly, exploded diagrams are provided. Steps in the procedures are numbered thus: 1),
2), 3). Parts shown in the illustrations are identified thus: 1, 2, 3.
REFERENCES
These have been kept to a minimum, however, when you are referred to another section of
the manual, you are told the page number to go to.
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SPECIFICATIONS
These are given in bold type at each procedure. It is not necessary to leave the section dealing with the procedure in order to look up the specifications.
It is important to note the differences in specifications of models. Where a procedure relates
to more than one model, the main differences in specifications will be shown in the following
table.
Model name 50GETO 60FEHTO 60FED 60FEDO 60FET 60FETO 70BEDO 70BETO
USA and
Canada name
Control system
Tilt system Power trim and tilt Manual tilt Power trim and tilt Manual tilt
Lubrication
system
Model name 75CET 75CETO 75CEHTO 80AETO 90AEHD 90AED 90AET 90AETO
USA and
Canada name
Control system Remote control
Tilt system Power trim and tilt Manual tilt Power trim and tilt
Lubrication
system
— P60TH C60ER — C60TR — — 70TR
Remote
control
Oil injection Pre-mixed Oil injection Pre-mixed Oil injection
C75TR 75TR P75H — — — C90TR
Pre-mixed Oil injection Pre-mixed Oil injection
Manual
control
Manual
control
Remote
control
Remote control
Manual
control
Power trim
and tilt
90TR
B90TR
Remote control
WARNINGS, CAUTIONS AND NOTES
Attention is drawn to the various Warnings, Cautions and Notes which distinguish important
information in this manual in the following ways.
The Safety Alert Symbol means ATTENTION! BECOME ALERT! YOUR SAFETY IS
INVOLVED!
WARNING
Failure to follow WARNING instructions could result in severe injury or death
operator, a bystander, or a person inspecting or repairing the outboard motor.
to the machine
CAUTION:
A CAUTION indicates special precautions that must be taken to avoid damage to the outboard motor.
NOTE:
A NOTE provides key information to make procedures easier or clearer.
1
2
3
4
5
6
7
8
9
0
A
B
C
D
E
F
G
H
I
J
K
L
M
E
12
GEN
INFO
34
SPEC
INSP
FUEL
ADJ
56
POWR
78
BRKT
90
LOWR
–+
ELEC
TRBL
ANLS
AB
CD
A50001-1-4
SYMBOLS
Symbols 1 to 9 are designed as thumbtabs to indicate the content of a chapter.
General Information
Specifications
Periodic Inspection and Adjustment
Fuel System
Power Unit
Lower Unit
Bracket Unit
Electrical Systems
Trouble Analysis
Symbols 0 to F indicates specific data:
Special service tool
Specified liquid
Specified grease
Specified engine speed
Specified torque
Specified measurement
Specified electrical value
[Resistance (
Electric current (A)]
Ω
), Voltage (V),
T
.
R
.
EF
GH
E
IJ
M
KL
GM
MN
LT
242
G
A
LT
271
LT
572
Symbol G to J in an exploded diagram
indicate grade of lubricant and location of
lubrication point:
Apply engine oil
Apply gear oil
Apply molybdenum disulfide oil
Apply water resistant grease (Yamaha
marine grease A, Yamaha marine grease)
Symbols K to N in an exploded diagram
indicate grade of sealing or locking agent,
and location of application point:
Apply Gasket Maker
Apply LOCTITE
Apply LOCTITE
N Apply LOCTITE No. 572
No. 271 (Red LOCTITE)
No. 242 (Blue LOCTITE)
NOTE:
In this manual, the above symbols may not
be used in every case.
A30000-0
E
INDEX
GENERAL INFORMATION
SPECIFICATIONS
PERIODIC INSPECTION AND
ADJUSTMENT
FUEL SYSTEM
GEN
INFO
SPEC
INSP
ADJ
FUEL
1
2
3
4
POWER UNIT
LOWER UNIT
BRACKET UNIT
ELECTRICAL SYSTEMS
POWR
LOWR
BRKT
–+
ELEC
5
6
7
8
TROUBLE ANALYSIS
TRBL
ANLS
9
GEN
INFO
CHAPTER 1
GENERAL INFORMATION
IDENTIFICATION ............................................................................................ 1-1
SERIAL NUMBER ..................................................................................... 1-1
STARTING SERIAL NUMBERS ............................................................... 1-1
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1
SAFETY WHILE WORKING
FIRE PREVENTION ................................................................................... 1-2
VENTILATION........................................................................................... 1-2
SELF-PROTECTION.................................................................................. 1-2
OILS, GREASES AND SEALING FLUIDS................................................ 1-2
GOOD WORKING PRACTICES ................................................................ 1-3
DISASSEMBLY AND ASSEMBLY ........................................................... 1-4
SPECIAL TOOLS
MEASURING ............................................................................................ 1-6
REMOVAL AND INSTALLATION ............................................................ 1-8
............................................................................................. 1-5
............................................................................ 1-2
2
3
4
5
6
7
8
9
1
1
2
3
4
GEN
INFO
IDENTIFICATION
A60000-1*
IDENTIFICATION
SERIAL NUMBER
The serial number of the outboard motor is
stamped on a plate attached to the port side
of the clamp bracket.
Serial number
NOTE:
For USA model:
As an anti-theft measure, a special label on
which the outboard motor serial number is
stamped is bonded to the port side of the
clamp bracket. The label is specially treated
so that peeling it off causes cracks across
the serial number.
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Model name
Approved model No.
Transom height
Serial number
STARTING SERIAL NUMBERS
The starting serial number blocks are as follows:
Model
World-
wide
50GETO — — 62F L: 400805 ~ 70BEDO — —
60FEHTO P60TH P60TH
60FED — C60ER
60FEDO — —
60FET C60TR C60TR
60FETO — —
USA Canada
Approved
model No.
6H2
Serial
number
L: 551924 ~
X: 750186 ~ X: 731262 ~
S: 001118 ~ 75CET C75TR C75TR
L: 305624 ~ 75CETO — 75TR L: 951540 ~
S: 100850 ~ 75CEHTO P75TH — L: 900371 ~
L: 407212 ~
S: 050474 ~ X: 851331 ~
L: 357665 ~ 90AEHD — —
X: 710231 ~
S: 150756 ~ 90AET C90TR C90TR L: 354053 ~
L: 472180 ~
X: 732000 ~ X: 856313 ~
World-
wide
70BETO 70TR 70TR
80AETO — —
90AED — —
90AETO
Model
USA Canada
90TR
B90TR
90TR
Approved
model No.
6H3
6H0
6H1
Serial
number
L: 402029 ~
L: 491824 ~
L: 001251 ~
L: 457543 ~
L: 320132 ~
L: 401108 ~
L: 498690 ~
1-1
GEN
INFO
SAFETY WHILE WORKING
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SAFETY WHILE WORKING
The procedures given in this manual are
those recommended by Yamaha to be followed by Yamaha dealers and their
mechanics.
FIRE PREVENTION
Gasoline (petrol) is highly flammable.
Petroleum vapor is explosive if ignited.
Do not smoke while handling and keep it
away from heat, sparks, and open flames.
VENTILATION
Petroleum vapor is heavier than air and if
inhaled in large quantities will not support
life. Engine exhaust gases are harmful to
breathe. When test-running an engine
indoors, maintain good ventilation.
SELF-PROTECTION
Protect your eyes with suitable safety
glasses or safety goggles when using compressed air, when grinding or when doing
any operation which may cause particles to
fly off.
Protect hands and feet by wearing safety
gloves or protective shoes if appropriate to
the work you are doing.
OILS, GREASES AND SEALING
FLUIDS
Use only genuine Yamaha oils, grease and
sealing fluids or those recommended by
Yamaha.
1-2
GEN
INFO
1.
SAFETY WHILE WORKING
Under normal conditions of use, there
should be no hazards from the use of the
lubricants mentioned in this manual. However, safety is all-important and by adopting good safety practices, any risk is
minimized.
A summary of the most important precautions is as follows:
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1. While working, maintain good standards of personal and industrial
hygiene.
2. Clothing which has become contaminated with lubricants should be
changed as soon as practicable, and
laundered before further use.
3. Avoid skin contact with lubricants; do
not, for example, place a soiled wipingrag in one’s pocket.
4. Hands, and any other part of the body
which have been in contact with lubricants or lubricant-contaminated clothing, should be thoroughly washed with
hot water and soap as soon as practicable.
5. To protect the skin, the application of a
suitable barrier cream to the hands
before working is recommended.
6. A supply of clean, lint-free cloths should
be available for wiping purposes.
GOOD WORKING PRACTICES
The right tools
Use the special tools that are advised to
protect parts from damage. Use the
right tool in the right manner - don’t
improvise.
2.
Tightening torque
Follow the torque tightening instructions. When tightening bolts, nuts and
screws, tighten the larger sizes first, and
tighten inner-positioned fixings before
outer-positioned ones.
1-3
GEN
INFO
3.
SAFETY WHILE WORKING
DISASSEMBLY AND ASSEMBLY
1. Clean parts with compressed-air when
2. Oil the contact surfaces of moving parts
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Non-reusable items
When reassembling, always use new
gaskets, packing, O-rings, oil seals,
split-pins and circlips, etc.
disassembling them.
before assembly.
3. After assembly, check that moving parts
operate normally.
4. Install bearings with the manufacturer’s
markings on the side exposed to view
and liberally oil the bearings.
5. When installing oil seals, apply a light
coating of water-resistant grease to the
outside circumference.
1-4
GEN
INFO
A80000-0*
SPECIAL TOOLS
SPECIAL TOOLS
The use of correct special tools recommended by Yamaha will aid the work and enable accurate assembly and tune-up. Improvisations and use of improper tools can cause damage to
the equipment.
NOTE:
●
For USA and Canada, use part numbers starting with “YB-”, “YM-”, “YU-” or “YW-”.
●
For others, use part numbers starting with “90890-”.
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1-5
GEN
INFO
MEASURING
1 Tachometer YU-08036-A 90890-06760 Idle speed
2 Dynamic spark tester YM-34487 90890-06754 Ignition system
3 CDI tester YU-91022-B N.A. Ignition system
4 Mity Vac YB-35956 90890-06756 Fuel joint
5 Pressure tester YB-35956 90890-06762 Lower case
6 Dial gauge YU-03097 90890-01252 Backlash
7 Backlash indicator YB-06265 90890-06706 Backlash
8 Magnet base YU-34481 90890-06705 Backlash
9 Backlash adjusting plate YB-07003 N.A. Backlash
10 Thickness gauge YU-26900-8 N.A. Shimming
11 Pinion height gauge N.A. 90890-06702 Pinion shimming
12 Digital caliper N.A. 90890-06704
13 Gauge block YB-34432-9 N.A. Pinion shimming
14 Adapter plate YB-34432-10 N.A. Pinion shimming
15 Gauge base YB-34432-11 N.A. Pinion shimming
16 Clamp YB-34432-17 N.A. Pinion shimming
17 Shimming plate N.A. 90890-06701 Forward shimming
18 Base plate YB-34446-1 N.A. Forward shimming
19 Compression spring YB-34446-3 N.A. Forward shimming
20 Press plate YB-34446-5 N.A. Forward shimming
21 Gauge pin YB-34446-7 N.A. Forward shimming
22 Digital multimeter YU-34899-A 90890-06752 Electrical
23 Pocket tester YU-03112 90890-03112 Electrical
24 Pressure gauge YB-06181 N.A. PTT unit
25 Shimming gauge
26 3 pins test harness YB-06443 90890-06757 Peak voltage measurement
SPECIAL TOOLS
Tool name
Tool No.
USA and
Canada a
YB-34468-3
YB-34468-5
Except for
USA and
Canada b
Pinion
shimming
N.A. Reverse shimming
Use for:
Forward
shimming
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1-6
GEN
INFO
SPECIAL TOOLS
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1-7
GEN
INFO
REMOVAL AND INSTALLATION
1 Small end bearing installer
2 Piston slider YU-33294 90890-06530 Cylinder piston
3 Slide hammer set YB-06096 N.A.
4 Stopper guide plate N.A. 90890-06501
5 Bearing puller N.A. 90890-06535
6 Stopper guide stand N.A. 90890-06538
7 Ring nut wrench
8 Extension N.A. 90890-06513 Ring nut
9 Claw YB-06207
10 Universal puller YB-06117 N.A. Propeller shaft housing
11 Center bolt N.A. 90890-06504 Propeller shaft housing
12 Drive rod YB-06071 90890-06602
13 Needle bearing attachment YB-06153 90890-06612 Propeller shaft housing bearing
14 Drive shaft holder
15 Pinion nut holder N.A. 90890-06505 Pinion nut
16 Bearing outer race puller N.A. 90890-06523 Forward gear outer bearing
17 Needle bearing attachment YB-06155 90890-06611 Drive shaft needle bearing
18 Bearing separator YB-06219 90890-06534
19 Drive rod YB-06071 90890-06604 Propeller shaft needle bearing
20 Needle bearing attachment YB-06153
SPECIAL TOOLS
Tool name
Tool No.
USA and
Canada a
YB-06107
YB-06287
YB-06048
YB-34447
YB-06049
YB-06151
Except for
USA and
Canada b
90890-06527 Connecting rod
Water pump housing oil seal
Reverse gear bearing
Propeller shaft housing oil seal
Drive shaft outer bearing
Forward gear outer bearing
Water pump housing oil seal
Reverse gear bearing
Propeller shaft housing oil seal
Drive shaft outer bearing
Water pump housing oil seal
Reverse gear bearing
Propeller shaft housing oil seal
Drive shaft outer bearing
Water pump housing oil seal
Reverse gear bearing
Propeller shaft housing oil seal
Drive shaft outer bearing
90890-06510
90890-06511
90890-06502
90890-06503
90890-06518
90890-06519
90890-06612
90890-06614
Propeller shaft housing
Propeller shaft housing oil seal
Drive shaft needle bearing
Reverse gear bearing
Forward gear bearing
Propeller shaft needle bearing
Use for:
Bearing housing
Ring nut
Pinion nut
Crank shaft bearing
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1-8
GEN
INFO
SPECIAL TOOLS
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1-9
GEN
INFO
21 Bearing depth plate N.A. 90890-06603
22 Oil seal attachment YB-06269 N.A. Propeller shaft oil seal
23 Needle bearing depth stop YB-34473 N.A. Drive shaft needle bearing
24 Driver rod YB-06071 90890-06606 Drive shaft outer bearing
Bearing outer race attach-
25
ment
26 Driver rod YB-06071 90890-06605 Forward gear outer bearing
Bearing outer race attach-
27
ment
Bearing inner race attach-
28
ment
29 Shift rod wrench YB-06052 N.A. Shift rod
30 Cylinder end screw wrench YB-06175-1A N.A. PTT
31 Cylinder end screw wrench YB-06175-2B
32 Flywheel holder YB-06139 90890-06522 Flywheel
33 Flywheel puller YB-06117 90890-06521 Flywheel
SPECIAL TOOLS
Tool name
Tool No.
USA and
Canada a
YB-06156
YB-06276-B
N.A.
Except for
USA and
Canada b
90890-06626
90890-06627
90890-06621
90890-06622
90890-06640
90890-06662
90890-06544
90890-06548
Use for:
Propeller shaft needle bearing
Drive shaft needle bearing
Drive shaft outer bearing
Forward gear outer bearing
Forward gear inner bearing
PTT
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1-10
SPEC
CHAPTER 2
SPECIFICATIONS
GENERAL SPECIFICATION ............................................................................ 2-1
MAINTENANCE SPECIFICATIONS ................................................................ 2-5
ENGINE..................................................................................................... 2-5
ELECTRICAL ............................................................................................. 2-7
DIMENSION............................................................................................ 2-10
TIGHTENING TORQUE
GENERAL TORQUE SPECIFICATIONS
................................................................................ 2-12
....................................................... 2-13
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1
2
3
4
5
6
7
8
9
SPEC
C20000-0*
GENERAL SPECIFICATION
GENERAL SPECIFICATION
Unit
50 hp 60 hp 70 hp
Model 50GETO
Approved model No. 62F 6H2 6H3
Overall Length mm (in) 698 (27.5) 713 (28.1)
— 1,330 (52.4)
Overall width mm (in) 364 (14.3)
Overall height S mm (in) — 1,252 (49.3)
L mm (in) 1,351 (53.2) 1,374 (54.1)
X mm (in) —
Boat transom height S mm (in) — 381 (15.0)
L mm (in) 508 (20.0)
X mm (in) —
O/M transom height S mm (in) — 400 (15.7)
L mm (in) 520 (20.5) 521 (20.5)
X mm (in) — 648 (25.5)
Weight (Al.) S kg (lb) — 94 (207)
L kg (lb) 102 (225) 97.5 (215)
X kg (lb) — 115 (254)
Weight (SUS.) S kg (lb) — 97.5 (215)
— 105.5 (233)
L kg (lb) — 99.5 (219)
— 107.5 (237)
X kg (lb) — 110.5 (244)
Full throttle speed range r/min 4,500 ~ 5,500 5,000 ~ 6,000
Output (ISO)
Maximum fuel consumption
kW (hp) @ r/min
L (US gal, lmp
gal)/h @ r/min
36.8 (50) @ 5,000 44.1 (60) @ 5,000 51.5 (70) @ 5,500
22 (5.81, 4.84)
@ 5,500
Type 2 stroke - L
Cylinders 3
Total displacement cm
3
(cu in) 849 (51.8)
Bore × Stroke mm (in) 72.0 × 69.5 (2.83 × 2.74)
Compression ratio 6.33 6.10
Compression pressure kPa (kg/cm
2
) 853 (8.53)
Carburetor number 3
Intake system Reed valve
Model
*1
: P60TH/
60FEHTO
*2
: C60ER/60FED
*3
: 60FEDO
*4
: C60TR/60FET
*5
: 60FETO
1,501 (59.1)
*2,3,4,5
635 (25.0)
*2,3,4,5
*2
95.5 (211)
104 (229)
103.5 (228)
105.5 (233)
112 (247)
96 (212)
*2
106 (234)
109 (240)
23 (6.08, 5.06)
@ 5,500
*3
: 70BEDO
*5
: 70TR/70BETO
*1
—
*2,3,4
—
*1,4,5
—
*1,4,5
—
*1,4,5
*4
*1
*3
*5
*3
*5
—
—
*4
*1
*4
*3
—
*5
108.5 (239)
—
*3
*5
*5
26 (6.87, 5.72)
@ 5,500
*5
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2-1
SPEC
Model C75TR/75CET
GENERAL SPECIFICATION
Unit
75hp 80hp 90hp
75TR/75CETO
P75TH/75CEHTO
*1
*2
*3
Model
80AETO 90AEHD
90AED
C90TR/90AET
90TR/90AETO
B90TR/90AETO
Approved model No. 6H0 6H1
Overall Length mm (in) 726 (28.6)
1,343 (52.9)
Overall Width mm (in) 374 (14.7)
398 (15.7)
*1,2
726 (28.6) 726 (28.6)
*3
— 1,343 (52.9)
*1,2
374 (14.7) 374 (14.7)
*3
— 398 (15.7)
Overall Height S mm (in) —
L mm (in) 1,413 (55.6)
X mm (in) — 1,540 (60.6) 1,540 (60.6)
Boat transom height S mm (in) —
L mm (in) 508 (20.0)
X mm (in) — 635 (25.0) 635 (25.0)
O/M transom height S mm (in) —
L mm (in) 520 (20.5)
X mm (in) — 647 (25.5) 647 (25.5)
Weight (Al.) S kg (lb) —
L kg (lb) 119.5 (263)
120.5 (266)
124.5 (275)
*1
*2
*3
120.5 (266) 115.5 (255)
111.5 (246)
119.5 (263)
120.5 (266)
X kg (lb) — 123.5 (272) 123.5 (272)
Weight (SUS.) S kg (lb) —
L kg (lb) 121.5 (268)
122.5 (270)
*1
*2
122.5 (270) 113.5 (250)
121.5 (268)
122.5 (270)
X kg (lb) — 125.5 (277) 125.5 (277)
Full throttle speed range r/min 4,500 ~ 5,500
Output (ISO)
Maximum fuel consumption
kW (hp) @ r/min
L (US gal, lmp
gal)/h @ r/min
55.2 (75) @ 5,000 58.8 (80) @ 5,000 66.2 (90) @ 5,000
32 (8.45, 7.04)
@ 5,500
34.5 (9.11, 7.59)
@ 5,500
Type 2 stroke-L
Cylinders 3
Total Displacement cm
3
(cu in) 1,141 (69.6)
Bore × Stroke mm (in) 82.0 × 72.0 (3.23 × 2.83)
Compression ratio 5.90 5.86
Compression pressure kPa (kg/cm
2
) 922 (9.22)
Carburetor number 3
Intake system Reed valve
*1
*2
*2,3,4
*2,3,4
*1
*4
*4
*1
*2
*3
*4
*4
*2
*3
*4
*4
*1
*4
E
*3
*4
*4
2-2
SPEC
GENERAL SPECIFICATION
Unit
50 hp 60 hp 70 hp 75 hp 80 hp 90 hp
Model
Scavenging system Loop charge
Starting system Electric
Ignition system CDI
Alternator output 6A 10A
Carburetor starting system Choke valve
*1
/Prime start
Advance type Micro computer
Spark plug (NGK)
Spark plug with noise
BR8HS-10
B8HS-10
BR8HS-10/Register plug-cap (standard)
suppressor (NGK)
Exhaust system Through prop boss
Cooling system Water
*2
Lubrication system Pre-mixed gasoline & oil
Fuel type P.O.N.
*3
Regular gasoline
/Oil injection
Fuel rating Min.86
Engine oil type/grease TC-W3
Gear oil type Hypoid gear oil-SAE#90
Gear oil quantity cm
3
(US oz,
lmp oz)
500
(16.91,
610 (20.62, 21.47)
*4
*5
17.60)
Engine oil tank capacity L (US qt,
2.8 (2.96, 2.46) 3.3 (3.49, 2.90)
lmp qt)
Tilt angle (Manual tilt model) degree 8/12/16/20/24
Tilt-up angle S degree 63 —
L, X 67
Trim angle (PTT model) at 12 transom –4 ~ 15 –4 ~ 16
Steering angle degree
35 + 35 30 + 30
(left + right)
Gear shift position F-N-R
Gear ratio 14:24
(1.714)
12:28
(2.333)
*6
13:26
(2.000)
Gear type Spiral bevel gear
Clutch type Dog clutch
Propeller direction Clockwise
Propeller drive system Spline
Propeller series mark K
Battery capacity Ah (kC) 70 (252)
Cold cranking Amps 380
E
*1
: For C60ER, C60TR, C75TR
*2
: For C60ER/60FED, C60TR/60FET, C75TR, 90AEHD, 90AED, C90TR/90AET
*3
: Pump Octane Number; (Research octane + Motor octane)/2
*4
: YAMALUBE two-cycle outboard motor oil is recommended in USA
YAMALUBE 1 is recommended in Canada
*5
: GEAR CASE LUBE is recommended in USA
*6
: Forward-Neutral-Reverse
2-3
SPEC
Item Unit
Propeller G type (aluminum)
No. of blades × diameter
Item Unit
Propeller K type (aluminum) K type (stainless)
No. of blades × diameter
P: High performance
propeller
GENERAL SPECIFICATION
in 3 × 11-3/8 × 12
×
pitch
in 3 × 13-1/4 × 17
×
pitch
in 3 × 14 × 20
3 × 13 × 23
3 × 12-5/8 × 21
3 × 13 × 19
3 × 13-1/2 × 15
3 × 13-5/8 × 13
P type (stainless)
Model
50 hp
3 × 11-1/8 × 13
Model
60, 70 hp
3 × 13 × 17
3 × 13 × 19
3 × 13 × 21
3 × 13 × 23
3 × 13 × 25
3 × 13-1/2 × 14
3 × 13-1/2 × 16
3 × 14 × 24
3 × 14 × 28
E
Item Unit
Propeller K type (aluminum) K type (stainless)
No. of blades × diameter
× pitch
P: High performance
propeller
in 3 × 12-5/8 × 21
3 × 13 × 19
3 × 13 × 23
3 × 13-1/4 × 17
3 × 13-1/2 × 15
3 × 13-1/2 × 17
3 × 13-5/8 × 13
3 × 14 × 11
in 3 × 14 × 20
Model
75, 80, 90 hp
3 × 13 × 17
3 × 13 × 19
3 × 13 × 21
3 × 13 × 23
3 × 13 × 25
3 × 13-1/2 × 14
3 × 13-1/2 × 16
P type (stainless)
3 × 14 × 22
3 × 14 × 24
3 × 14 × 26
3 × 14 × 28
2-4
SPEC
C31000-0*
MAINTENANCE SPECIFICATIONS
MAINTENANCE SPECIFICATIONS
ENGINE
E
Item Unit
Cylinder head:
Warpage limit mm (in) 0.1 (0.004)
(Lines indicate straight
measurement)
Cylinder:
Bore size mm (in) 72.00 ~ 72.02
Taper limit mm (in) 0.08 (0.003)
Out of round limit mm (in) 0.05 (0.002)
Piston:
Piston to cylinder
clearance
<Limit> mm (in) 0.105 (0.0041) 0.115 (0.0045)
Piston size “D” mm (in) 71.945 ~ 71.970
Measuring point “H” mm (in) 10 (0.4)
mm (in) 0.050 ~ 0.055
50 hp 60 hp 70 hp 75 hp 80 hp 90 hp
(2.834 ~ 2.835)
(0.0020 ~ 0.0022)
(2.8325 ~ 2.8335)
Model
82.00 ~ 82.02
(3.228 ~ 3.229)
0.060 ~ 0.065
(0.0024 ~ 0.0026)
81.935 ~ 81.960
(3.2258 ~ 3.2268)
Oversize 1st mm (in) 72.25 (2.844)* 82.25 (3.238)*
2nd mm (in) 72.50 (2.854) 82.50 (3.248)
Offset mm (in) 0.5 (0.0197) 1.0 (0.039)
[direction] [Exhaust side] [Exhaust side]
Piston ring:
Sectional sketch
Top ring & 2nd ring
Type
B mm (in) 2.0 (0.08)
T mm (in) 3.0 (0.12) 3.2 (0.13)
End gap [installed]
Top ring & 2nd ring mm (in) 0.3 ~ 0.5 (0.012 ~ 0.020) 0.4 ~ 0.6 (0.016 ~ 0.024)
Side clearance
Top ring & 2nd ring mm (in) 0.03 ~ 0.07
(0.0012 ~ 0.0028)
*: Except for USA
2-5
Keystone
0.03 ~ 0.06
(0.0012 ~ 0.0024)
SPEC
MAINTENANCE SPECIFICATIONS
E
Item Unit
50 hp 60 hp 70 hp 75 hp 80 hp 90 hp
Model
Crankshaft:
Crank width “A” mm (in) 57.90 ~ 57.95 (2.280 ~ 2.281) —
Crank width “B” mm (in) 151.7 ~ 152.0 (5.972 ~ 5.984) —
Crank width “C” mm (in) 245.5 ~ 246.1 (9.67 ~ 9.69) 284.2 ~ 284.8 (11.19 ~ 11.21)
Maximum deflection
mm (in) 0.03 (0.0012) 0.05 (0.0020)
“D”
Connecting rod side
mm (in) 0.20 ~ 0.70 (0.008 ~ 0.028) 0.12 ~ 0.26 (0.005 ~ 0.010)
clearance “E”
Connecting rod maxi-
mm (in) 2.0 (0.08)
mum axial play “F”
Carburetor:
Stamp mark 62F00 6H20A,
6H210
Main jet (M.J.) # 125 140,
145 (L)
Main air jet (M.A.J.) # 170 175, 180
Pilot jet (P.J.) # 65 65, 70
Pilot air jet (P.A.J.) # 70 75, 80
Pilot screw (P.S.) Turns out 1-3/8 ± 1/4
1-1/2 ± 1/4,
1-3/8 ± 1/4
Float height (F.H.) mm (in) 15.0 ± 1.0
(0.59 ±
0.04)
6H30A 6H007,
*1
6H015*2
6H007 6H107
150 160
*3
*1
160 180 175
*1
75 78, 80*2 78 78
*1
70 80, 75*2 80 70
1-1/4 ± 1/4 1-3/8 ± 1/4 1-1/4 ± 1/4
*1
14.0 ± 1.0 (0.55 ± 0.04)
14.0 ± 2.0 (0.55 ± 0.08)
19.5 ± 3.0 (0.77 ± 0.12)
*1
*2
Valve seat size ø 1.2 (0.047) 1.6 (0.063),
1.4 (0.055)
1.4 (0.055) 1.6 (0.063)
*1
Idling speed r/min 800 ± 50
Oil injection pump:
Stamped mark 62F00 6H302 6H102
3
Discharge cm
(US oz,
lmp oz)
1.90 ± 0.50
(0.064 ± 0.017,
0.067 ± 0.018)
2.20 ± 0.50
(0.074 ± 0.017,
0.077 ± 0.018)
3.10 ± 0.70
(0.105 ± 0.024,
0.109 ± 0.025)
Reed valve:
Stopper height mm (in) 3.0 ± 0.2
9.9 ± 0.2 (0.39 ± 0.01)
(0.12 ± 0.01)
Warpage limit mm (in) 0.2 (0.01)
*1
: For C60ER, C60TR
*2
: For C75TR
*3
: Lower cylinder
2-6
SPEC
MAINTENANCE SPECIFICATIONS
E
Item Unit
Thermostat:
Valve opening temperature
Full-opening temperature
Valve lift mm (in) 3 (0.12)
C32000-0*
°C (°F) 48 ~ 52 (118 ~ 126)
°C (°F) 60 (140)
50 hp 60 hp 70 hp 75 hp 80 hp 90 hp
Model
ELECTRICAL
Item Unit
Ignition system:
Ignition timing
at full reversed ATDC
degree
at full advanced BTDC
degree
cam roller pick-up ATDC
degree
Piston position
at full advanced BTDC
mm (in)
Charging coil resistance
[20°C (68°F)]
Charge coil output peak
voltage (minimum)
color Br – L R – Br R – L
@ cranking (open) V 120 55 90
@ cranking (connect) V 150 60 100
@ 1,500 r/min V 160 170 135
@ 3,500 r/min V 120 150 135
Pulser coil resistance
[20°C (68°F)]
Pulser coil output peak
voltage (minimum)
color W/R – W/B W/R – W/B
@ cranking (open) V 4.5 7.0
@ cranking (connect) V 2.5 5.0
@ 1,500 r/min V 6.5 14
@ 3,500 r/min V 10 20
Ω 136 ~ 204 (Brown – Blue) 64 ~ 96 (Br – R)
Ω 240 ~ 360 (W/R – W/B) 241 ~ 362 (W/R – W/B)
50hp 60hp 70hp 75hp 80hp 90hp
7 ± 18 ± 1
22 ± 1 20 ± 1 22 ± 1
7 ± 18 ± 1
3.23 ± 0.28
(0.127 ± 0.11)
Model
2.68 ±
0.26
(0.106 ±
0.010)
2.83 ± 0.27
(0.111 ± 0.011)
191 ~ 288 (B – R)
3.41 ±
0.29
(0.134 ±
0.011)
2-7
SPEC
MAINTENANCE SPECIFICATIONS
E
Item Unit
Ignition coil:
Primary coil resistance
[20°C (68°F)]
Secondary coil resistance [20°C (68°F)]
Crank position sensor
resistance [20°C (68°F)]
Crank position sensor
peak voltage: (minimum)
color L/R – L/W L/R – L/W
@ cranking (open) V 5.0 5.5
@ cranking (connect) V 5.0 5.5
@ 1,500 r/min V 20 25
@ 3,500 r/min V 16 20
Spark plug:
Spark plug gap mm (in) 0.9 ~ 1.0 (0.035 ~ 0.039)
CDI unit output peak
voltage: (minimum)
color B/W – B B/W – B
@ cranking (open) V — —
@ cranking (connect) V #1, 3: 105
@ 1,500 r/min V 145 155
@ 3,500 r/min V 105 130
Lighting system:
Lighting coil resistance Ω 0.57 ~ 0.85 (G/W – G) 0.4 ~ 0.6 (G/W – G)
STD (12V 80W)
[20°C (68°F)]
Lighting coil output
peak voltage (minimum)
color G – G/W G – G/W
@ cranking (open) V 8.5 10
@ cranking (connect) V 8.0 11
@ 1,500 r/min V 25 25
@ 3,500 r/min V 25 25
Starter motor:
Rating Sec 30
Output kW 0.6 1.0
Clutch type Overrunning
Brush length mm (in) 12.5 (0.49) 16.0 (0.63)
<Wear limit> mm (in) 9.0 (0.35) 12.0 (0.47)
Commutator undercut mm (in) 0.8 (0.03)
<Repair limit> mm (in) 0.2 (0.01)
Ω 0.18 ~ 0.24 (Black/White – Black)
kΩ 3.26 ~ 4.88 (Black/White – High tension cord)
Ω 158 ~ 236 (Blue/White – Blue/Red)
50hp 60hp 70hp 75hp 80hp 90hp
#2: —
Model
#1,3: 130
#2: —
2-8
SPEC
MAINTENANCE SPECIFICATIONS
E
Item Unit
Commutator outside
diameter
<Repair limit> mm (in) 29 (1.14) 31 (1.22)
Pinion/ring gear gap mm (in) 3.0 ~ 5.0 (0.12 ~ 0.20)
Others:
Electrothermal valve
resistance [20°C (68°F)]
Fuel enrichment valve
resistance [20°C (68°F)]
Trim sensor resistance Ω 360 ~ 540 (P – B)
Fuse A 20
mm (in) 30 (1.18) 33 (1.30)
Ω 2.3 ~ 3.5 (L – B)
Ω 3.4 ~ 4.0 (L – B)
50hp 60hp 70hp 75hp 80hp 90hp
800 ~ 1,200 (B – O)
Model
2-9
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