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20C
Yamaha 20C Service Manual
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F
ES
T
ABLE DES
MA
TIERES
INFORMA
TIONS
GENERALES
SPECIFICA
TIONS
SER
VICE
GENERAL
SYSTEMES
D’ALIMENT
A
TION
MO
TEUR
BOITIER
D’HELICE
SUPPOR
T
ELECTRICITE
DEP
ANN
A
GE
INDICE
INFORMA
CION
GENERAL
GEN
INFO
1
ESPECIFICA-
CIONES
SPEC
2
MANTENIMIENTO
GENERAL
GEN
SR
VC
3
SISTEMA DE
ALIMENT
A
CION
DE COMBUSTIBLE
FUEL
4
MO
TOR
POWR
5
UNID
AD
INFERIOR
LOWR
6
UNID
AD SOPOR
TE
BRKT
7
SISTEMA
ELECTRICO
ELEC
8
LOCALIZA
CION Y
REP
ARA
CION DE
A
VERIAS
TRBL
SHTG
9
6A9-7-5F-B1-1_3 10/10/03 4:02 PM Page 3
4
6
Table of Contents
Español
7
Default Chapter
7
Table of Contents
7
Chapitre 1 Mode D'utilisation du
19
Presentation du
19
Manual Format
20
The Illustrations
20
How to Use this Manual
20
Illustrations
21
References
22
Specifications
22
Warnings, Cautions and Notes
24
Avertissement, Attention
25
Symbols
26
Symboles
27
Identification
28
Serial Number
28
Engine Serial Number
28
Starting Serial Numbers
28
Numero de Serie
29
Numero de Serie du Moteur
29
Numero Debutant la Serie
29
Safety While Working
30
Fire Prevention
30
Ventilation
30
Mesures de Securite
31
Mesures de Securite Contre Les Incendies
31
Aeration
31
Medidas de Seguridad
31
Prevencion contra Incendios
31
Ventilacion
31
Self-Protection
32
Oils, Greases and Sealing Fluids
32
Proteccion
33
Aceites, Grasas y Liquidos para Juntas
33
Good Working Practices
34
Disassembly and Assembly
34
Algunos Consejos
35
Desmontaje y Montaje
35
Special Tools
38
Special Tools for Tune-Up
38
Special Tools for Engine Service
38
Special Tools for Crank Jig Assy <P/N : 90890-02421
38
Special Tools for Lower Unit Service
39
Sealing Agents and Lubricants
39
Outillage Special
40
Herramientas Especiales
42
Herramientas Especiales para la Puesta Apunto
42
Herramientas Especiales para el Mantenimiento del Motor
42
Herramientas Especiales para el Conjunto de Plantilla del Ciguenal <P/N. 90890-02421
42
Herramientas Especiales para el Mantenimiento de la Unidad Inferior
43
Pastas para Juntas Ylubricantes
43
Capitulo 2
45
Especificaciones
45
General Specifications
46
Especificaciones Generales
47
Maintenance Specifications
50
Especificaciones de Mantenimiento
51
Motor
51
Cola
53
Sistema Electrico
55
Dimensiones
56
Tightening Torque
58
General Torques
58
Chapter 3 General Service
60
Predelivery Service
62
Contents
62
Packing Lists
62
Electric Wiring
64
Predelivery Service
64
Fuel Line
66
Gear Oil Level
68
Operation of Controls and Moving Parts
68
Fuel Leakage
70
Water Leakage
70
Exhaust Leakage
70
Engine and Lower Unit Noise
70
Idle-Speed
70
Ignition Timing
70
Motor Exterior
70
Instructing the New Owner
70
Periodic Service
72
Maintenance Schedule
72
Anode
72
Carburettor
76
Cylinder Head Bolts, Engine Mounting Bolts and Flywheel Nut
76
Fuel Filter
76
Fuel Tank and Fuel Line
78
Gear Oil
78
Idle-Speed
78
Ignition Timing Adjustment
80
Carburettor Control Link Adjustment
88
Propeller
88
Spark Plug
90
Start-In-Gear Protection Adjustment
90
Throttle Control Link Adjustment
90
Fuel System
92
Chapter 4
94
Exploded Diagram
94
Cleaning and Inspection
98
Installation
102
Carburettor
104
Exploded Diagram
104
Removal and Disassembly
106
Inspection
108
Assembly
110
Installation
112
Chapter 5 Power Unit
114
Exploded Diagram
116
Preparation for the Overhaul
118
Removal
118
Disassembly
120
Checking the Crankshaft
142
Inspection
144
Cylinder Head
144
Cylinder Block
146
Piston
148
Piston Ring
152
Piston Pin and Small End Bearing
154
Crankshaft
154
Reed Valve
156
Thermostat
158
Ball Bearing
158
Assembly and Adjustment
160
Bearing, Oilseal and O-Ring
160
Piston
160
Small End Bearings and Piston Assembly
162
Crank Cylinder Assembly
164
Cylinder Head and Exhaust Cover
164
Intake Manifold
166
Recoil Starter
168
Français
180
Chapter 6
182
Exploded Diagram
182
Disassembly
184
Removal
184
Inspection
192
Gear Case
192
Bearing Housing
192
Ring-Nut
192
Water Pump Housing
192
Impeller
194
Oil-Seal Cover
194
Gears
194
Bearings
194
Clutch Dog and Components
194
Drive and Propeller Shafts
196
Drive Shaft Sleeve
196
Shift-Plunger, Shift-Shaft, and Boot
196
Propeller and Anode
196
Assembly and Adjustment
198
Shim Selection
198
Backlash
204
Assembly
210
Water Pump Installation
216
Lower Unit Leakage Check
218
Installation
218
English
234
Chapter 8
236
Electrical Components
236
Wiring Diagram
238
Removal
240
Magneto Base
240
Cleaning, Inspection and Repair
244
Spark-Plug
244
Pulser Coil
244
Charge Coil
244
Lighting Coil (Option)
244
Ignition Coil
246
Replacement of Spark-Plug Cap
246
CDI Unit
248
Rectifier
250
Engine Stop Lanyard Switch
250
Trouble-Shooting Diagram
256
Chapter 9 How to Trouble-Shoot
256
Engine Is Hard to Start or will Not Start
257
Rough Idling
261
Engine Stalls
262
Engine will Not Stop
263
Gear Shifting Is Impossible or Hard
264
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Yamaha 20C Specifications
General
Brand
Yamaha
Model
20C
Category
Outboard Motor
Language
English
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