Yamaha 25BMH Manuals

Manuals and User Guides for Yamaha 25BMH. We have 3 Yamaha 25BMH manuals available for free PDF download: Service Manual, Rigging Manual, Manual

Yamaha 25BMH Service Manual (447 pages)

Brand: Yamaha | Category: Outboard Motor | Size: 9.53 MB

How to Use this Manual
4
Important Information
8
Specifications

12
- Symbols
  12
- Table of Contents
  14
- General Information Contents
  16
Periodic Check and Adjustment

12
Chapter 1

18
- Serial Number
  18
- Starting Serial Numbers
  18
Identification

18
Safety While Working

20
- Fire Prevention
  20
- Ventilation
  20
- Self-Protection
  20
- Oils, Greases and Sealing Fluids
  20
- Good Working Practices
  22
- Disassembly and Assembly
  24
Special Tools

26
- Measuring
  26
  - Outillage Special
    27
  - Removing and Installing
    30
Features and Benefits

32
- Power Unit
  32
- Ignition System
  36
- Ignition Timing in Neutral
  40
- Cooling System
  44
  - Handle Grip
    52
  - Bracket and Bottom Cowling
    56
Technical Tips

60
- Tiller Handl
  52
- Carburetor
  60
  - Slow Air Jet
    60
  - MID Range
    64
  - High Engine Speed
    68
  - Ignition System
    72
  - Ignition Timing
    72
  - Specifications Contents
    76
  - General Specifications
    78
Chapter 2 Specifications

79
General Specifications

80
Maintenance Specifications

82
- Power Unit
  82
- Lower Unit
  86
- Electrical
  88
- Dimensions
  92
D'entretien

94
- Specified Torques
  98
- Tightening Torques
  98
- Boitier Electrique
  99
- Couples Specifies
  99
Daten

99
- Motor
  99
  - Elektrik
    99
Anzugsdrehmomentwerte

99
- Drehmomentwerte
  99
Especificaciones de Mantenimiento

99
- Sistema Eléctrico
  99
- Unidad Inferior
  99
  - General Torques
    100
  - Torsión de Apriete General
    101
  - Periodic Check and Adjustment Contents
    102
  - Maintenance Interval Chart
    104
  - Checking the Fuel Line
    108
  - Checking the Top Cowling Fit
    108
Fuel System

108
- Top Cowling
  108
Chapitre 3 Carenage Superieur

109
- Verification de la Fixation
  109
  - Checking the Fuel Filter
    110
  - Checking the Fuel Pump
    110
  - Checking the Fuel Joint
    110
Systeme de Carburant

111
- Carburant
  111
- Verification de la Pompe de Carburant
  111
- Verification du Filtre de
  111
- Verification du Raccord de Carburant
  111
- Adjusting the Ignition Timing
  112
Systeme de Commande

113
Power Unit

142
Moteur

143
- Mesure de la Pression de Compression
  143
- Changing and Checking the Gear Oil
  144
Systeme de Refroidissement

145
- Checking the Cooling Water Discharge
  144
- Checking the Gear Oil Level
  144
- Lower Unit
  144
Bloc de Propulsion

145
Kühlungssystem

145
- Kühlwasserablaufs
  145
- Transmission
  145
- Verification de L'evacuation de L'eau de Refroidissement
  145
- Verification du Niveau
  145
- Überprüfung des
  145
- Überprüfung des Getriebeöls
  145
  - Checking the Lower Unit
    146
  - Comprobación de la Unidad Inferior
    147
Antriebseinheit

145
General

148
- Checking the Anode
  148
- Checking the Spark Plugs
  148
- Comprobación de las Bujías
  149
- Comprobación de Los
  149
  - Checking the Propeller
    150
  - Hélice
    151
    
    Checking Bolts and Nuts
    152
    
    Lubrication Points
    152
  - Comprobación de Los
    153
  - Pernos y las Tuercas
    153
  - Puntos de Lubricación
    153
    
    Fuel System Contents
    158
    
    Removing the Fuel Joint, Fuel Filter and Fuel Pump
    160
  - Assembling the Fuel Filter
    162
Chapter 4

162
- Checking the Fuel Joint
  162
- Disassembling the Fuel Pump
  164
- Checking the Fuel Pump
  166
- Assembling the Fuel Pump
  168
- Removing the Carburetor
  170
- Disassembling the Carburetor
  172
- Checking the Carburetor
  176
  - Assembling the Carburetor
    178
  - Installing the Carburetor
    180
  - Power Unit Contents
    182
Fuel Joint, Fuel Filter, and Fuel Pump

162
Chapter 5

186
- Removing the Recoil Starter
  186
- Disassembling the Recoil Starter
  188
- Checking the Recoil Starter
  192
- Assembling the Recoil Starter
  196
- Installing the Recoil Starter
  202
- Removing the Flywheel Magnet
  204
- Installing the Flywheel Magnet
  206
- Disconnecting the Leads and Stays
  208
Power Unit

208
- Removing the Power Unit
  212
- Removing the Magnet Base and Magnet Control Lever
  214
- Installing the Magnet Control Lever
  220
  - Removing the Itake Manifold and Reed Valves
    222
  - Checking the Reed Valves
    224
  - Installing the Intake Manifold
    224
  - Removing the Cylinder Head
    226
  - Checking the Cylinder Head
    228
  - Checking the Thermostat
    230
  - Installing the Cylinder Head and Cylinder Head Cover
    232
  - Installing the Thermostat
    232
  - Removing the Exhaust Cover
    234
  - Checking the Exhaust Cover
    236
  - Installing the Exhaust Cover
    236
  - Removing the Crankcase
    238
  - Assembling the Oil Seal Housing
    240
    
    Installing the Crankcase
    240
    
    Removing the Crankshaft and Cylinder Body
    244
  - Checking the Cylinder Body
    246
  - Checking the Piston
    248
  - Calculating the Piston-To-Cylinder Clearance
    250
  - Checking the Piston Pins and Small-End Bearings
    252
  - Checking the Piston Rings
    254
  - Checking the Crankshaft
    256
  - Installing the Crankshaft and Piston
    262
  - Installing the Piston and Piston Rings
    262
  - Checking the Anode
    264
  - Lower Unit Contents
    266
  - Removing the Lower Unit
    270
  - Removing the Propeller
    274
  - Installing the Propeller
    274
  - Installing the Trim Tab
    274
  - Removing the Water Pump
    276
  - Checking the Water Pump Housing
    278
  - Checking the Impeller and Insert Cartridge
    278
  - Checking the Woodruff Key
    278
  - Installing the Impeller and Water Pump Housing
    278
  - Removing the Shift Rod
    280
  - Removing the Propeller Shaft Housing
    282
  - Disassembling the Propeller Shaft Housing
    284
  - Disassembling the Propeller Shaft
    286
  - Checking the Reverse Gear
    290
  - Checking the Bearing
    290
  - Checking the Propeller Shaft Housing
    290
Roulement

291
- Assembling the Propeller Shaft Housing
  292
- Roulement À Aiguilles
  293
Attache de Roulement À

293
Aiguilles

293
Treiberstange L3

293
- Checking the Dog Clutch
  294
- Checking the Propeller Shaft
  294
- Checking the Shift Plunger
  294
- Checking the Spring
  294
Nadellageransatz

293
Agujas

293
Comprobación del

295
- Removing the Drive Shaft
  296
- Disassembling the Forward Gear
  298
- Removing the Drive Shaft Bearing
  298
- Assembling the Forward Gear
  300
- Checking the Bearings
  300
- Checking the Drive Shaft
  300
- Checking the Pinion and Forward Gear
  300
- Installing the Drive Shaft
  302
- Disassembling the Lower Case
  304
- Checking the Drive Shaft Sleeve
  306
- Assembling the Lower Case
  308
- Checking the Needle Bearing
  308
- Shimming
  310
- Selecting the Pinion Shims
  312
- Selecting the Forward Gear Shims
  316
- Selecting the Reverse Gear Shims
  320
- Backlash
  324
- Measuring the Forward Gear Backlash
  324
- Measuring the Reverse Gear Backlash
  326
- Bracket Unit Contents
  330
- Disassembling the Steering Handle
  332
Steering Handle

334
Chapter 7

336
- Checking the Steering Handle
  336
- Assembling the Steering Handle
  336
  - Removing the Bottom Cowling
    340
  - Checking the Bottom Cowling
    344
  - Installing the Bottom Cowling
    344
  - Disassembling the Shift Actuator
    346
  - Checking the Shift Actuator
    352
  - Removing the Bracket
    352
  - Assembling the Shift Actuator
    354
  - Removing the Upper Case
    358
  - Checking the Upper Case
    362
  - Installing the Upper Case
    362
  - Disassembling the Upper Case
    364
  - Assembling the Upper Case
    366
  - Checking the Exhaust Manifold
    366
  - Removing the Steering Arm
    368
  - Checking the Steering Arm
    370
  - Installing the Steering Arm
    370
  - Removing the Clamp Brackets
    372
  - Checking the Clamp Brackets
    378
  - Installing the Clamp Brackets
    380
  - Electrical System Contents
    384
  - Electrical Component
    386
  - Electrical Components Analysis
    388
  - Digital Circuit Tester
    388
  - Measuring the Peak Voltage
    388
  - Peak Voltage Adapter
    388
  - Measuring a Low Resistance
    390
  - Ignition System Wiring Diagram
    392
  - Checking the Ignition Spark Gap
    394
  - Checking the Spark Plug Caps
    396
  - Removing the Spark Plug Caps
    396
  - Installing the Spark Plug Caps
    396
  - Checking the Ignition Coils
    398
  - Checking the Charge Coil
    400
  - Checking the Pulser Coil
    402
  - CDI Unit
    404
  - Checking the CDI Unit
    406
  - Ignition Control System Wiring Diagram
    410
  - Checking the Engine Stop Switch
    412
  - Charging System Wiring Diagram
    414
  - Checking the Lighting Coil
    416
  - Checking the Rectifier/Regulator
    418
  - Trouble Analysis Contents
    422
  - Trouble Analysis
    424
  - Trouble Analysis Chart
    424
  - Troubleshooting for Peak Voltage
    436
  - Wiring Diagram
    442

Yamaha 25BMH Rigging Manual (226 pages)

Brand: Yamaha | Category: Outboard Motor | Size: 7.75 MB

Table of Contents

5
Propellers

59
- Propeller Specifications
  
  60
  - Propeller Types
    60
  - Propeller Identification
    62
- 2009 Propeller Applications
  
  63
- Propeller Selection
  
  63
- Wot Operation Range Table
  
  69
- Remote Controls
  
  71
  - Remote Control Applications
    72
  - Remote Switch Applications
    85
  - Remote Control Cables
    94
  - Remote Control Attachment Kit
    96
  - Steering Hook
    98
  - Steering Guide Attachment Kit
    101
  - Conventional Wire Harness
    103
  - Digital Electronic Control Wire Harness
    105
Tiller Handles

107
- 6X4 Multi-Function Tiller Handle
  
  108
- Steering Friction Contents
  
  117
Conventional Gauge (6Y5 & 6Y7)

119
- Mounting the Meters
  
  122
  - Meter Mounting Procedure
    122
  - Analog Gauge Illumination (6Y7 Type)
    122
- Analog Tachometer
  
  123
  - Analog Tachometer Applications
    123
  - Analog Tachometer Dimensions
    124
  - Pole Number Set up
    124
- Digital Tachometer
  
  125
  - Digital Tachometer Applications
    125
  - Digital Tachometer Dimensions
    125
  - Pole Number Set up
    126
- Speedometer
  
  127
  - Speedometer Applications
    127
  - Speedometer Dimensions
    128
  - Water Pressure Damper (Op)
    128
  - Speedometer Tube Routing
    129
  - Digital Speedometer Set up
    129
- Fuel Management Gauge
  
  130
  - Fuel Management Gauge Applications
    130
  - Fuel Management Gauge Dimensions
    131
  - Fuel Sender Installation
    132
  - Wiring Description
    133
  - Fuel Management Gauge Set up
    135
  - Fuel Mgt Gauge with Speedometer Set up
    135
- Analog Trim Meter
  
  136
  - Analog Trim Meter Applications
    136
  - Analog Trim Meter Dimensions
    136
  - Trim Sender Adjustment
    136
- Coolant Pressure Meter
  
  137
  - Coolant Pressure Meter Applications
    137
  - Coolant Pressure Meter Dimensions
    137
- Coolant Temp. Meter
  
  138
- Hour Meter
  
  144
  - Hour Meter Applications
    144
  - Wiring the Mechanical Hour Meter
    145
  - Wiring the Digital Hour Meter
    145
- Voltage Meter
  
  146
  - Voltage Meter Applications
    146
  - Voltage Meter Dimensions
    146
  - Wiring the Voltage Meter
    146
- Fuel Meter
  
  147
  - Fuel Meter Applications
    147
  - Fuel Meter Dimensions
    147
- Charge Warning Unit
  
  148
  - Charge Warning Unit Applications
    148
- Wire Harnesses
  
  149
  - Remote-Oil Tank Harness
    149
  - Additional Accessory Lead
    149
  - Meter Harness
    150
  - Lamp Switch
    151
  - Combination Trim and Oil Lead 1
    151
  - Combination Trim and Oil Lead 2
    151
  - Trim Meter Lead
    151
  - Pt/T Switch Lead Extension
    152
  - Trim and Oil Lead
    152
  - Fuel Management Gauge Harness
    152
  - Lighting Coil Extension Harness
    152
  - Rectifier Kit
    152
- Wiring Diagrams
  
  153
  - Wire Color Code
    153
  - Digital Meter
    154
  - Analog Meter (6Y7)
    159
  - Interchangeability between Tachometer and Engine
    161
  - Grommet Description
    164
Digital Network Gauge (6Y8)

167
- Digital Network Gauge Compatible Model
  
  168
- Digital Network Gauge Application
  
  168
  - Square Style Gauge Application
    168
- Digital Network Gauge Dimensions
  
  169
  - Round Style Gauge Application
    169
  - Square Style Gauge Dimensions
    169
  - Round Style Gauge Dimensions
    170
- Optional Equipments
  
  171
  - Multi-Sensor Application
    171
  - Fitting Plate
    171
  - Speed Sensor Kit
    172
  - Coolant Pressure Sensor Kit
    172
- Wire Harness
  
  173
  - Main Bus Wire
    173
  - Pigtail Bus Wire
    173
  - Fuel Tank / Gps Wire
    174
  - Hub
    174
- Wiring Diagrams
  
  175
  - FUEL INJECTED F50-F250 [Mechanical RC] & HPDI ENGINES
    175
  - F350/F300/F250 [Digital Electronic Control]
    178
- Initial Gauge Setup
  
  183
- Troubleshooting
  
  184
- Basic Requirements
  
  185
- Nmea0183 Compatible Equipments Connection
  
  185
Battery

187
- Recommended Battery
  
  188
- Battery Cable Length
  
  189
- Battery Wiring
  
  190
Appendix

195
- Model Name Designation
  
  196
  - Us & Canada Model Identification
    197
  - New Us & Canada Model Identification Code
    197
- Fuel System Vacuum Pressure Standard
  
  198
  - Fuel Hose Routing Resistance Measuring Method
    198
  - Lowest Vacuum Pressure Standard
    199
- Portable Fuel Tanks (Typical)
  
  200
- Fuel Pipes (Typical)
  
  200
- Pre-Delivery Inspection (Pdi) Checks
  
  201
- Conventional Rigging Kit Contents
  
  202
  - Digital Tachometer Kit
    202
  - Digital Tachometer and Speedometer Kit
    202
  - Twin-Motor Kit
    203
  - Remote Oil Tank Kit (for 2-Stroke Engine)
    204
- Digital Network Gauge Rigging Kit Contents
  
  205
- 2009 Manufacturing Start Serial Number
  
  219

Yamaha 25BMH Manual (19 pages)

Brand: Yamaha | Category: Outboard Motor | Size: 0.5 MB

Table of Contents
1
Identification

2
- Serial Number
  2
- Starting Serial Numbers
  2
Safety While Working

3
- Fire Prevention
  3
- Ventilation
  3
- Self-Protection
  3
- Oils, Greases and Sealing Fluids
  3
- Good Working Practices
  4
- Disassembly and Assembly
  5
Special Tools

6
- Measuring
  6
- Removing and Installing
  8
Features and Benefits

9
- Power Unit
  9
- Ignition System
  10
- Ignition Timing in Neutral
  11
- Cooling System
  12
- Tiller Handle
  14
- Bracket and Bottom Cowling
  15
Technical Tips

16
- Carburetor
  16
- Ignition System
  19

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Yamaha 25BMH Manuals

Yamaha 25BMH Service Manual (447 pages)

Table of Contents

Specifications

Periodic Check and Adjustment

Chapter 1

Identification

Safety While Working

Special Tools

Features and Benefits

Technical Tips

Chapter 2 Specifications

General Specifications

Maintenance Specifications

D'entretien

Daten

Anzugsdrehmomentwerte

Especificaciones de Mantenimiento

Fuel System

Chapitre 3 Carenage Superieur

Systeme de Carburant

Systeme de Commande

Power Unit

Moteur

Systeme de Refroidissement

Bloc de Propulsion

Kühlungssystem

Antriebseinheit

General

Chapter 4

Fuel Joint, Fuel Filter, and Fuel Pump

Chapter 5

Power Unit

Roulement

Attache de Roulement À

Aiguilles

Treiberstange L3

Nadellageransatz

Agujas

Comprobación del

Steering Handle

Chapter 7

Yamaha 25BMH Rigging Manual (226 pages)

Table of Contents

Table of Contents

Top Cover Pictograph Description

Uncrating Procedure (for Typical Steel Frame)

Mounting the Outboard Motor

Mounting the Remote Oil Tank

Outboard Motor Dimensions

Propellers

Propeller Specifications

2009 Propeller Applications

Propeller Selection

Wot Operation Range Table

Remote Controls

Tiller Handles

6X4 Multi-Function Tiller Handle

Steering Friction Contents

Conventional Gauge (6Y5 & 6Y7)

Mounting the Meters

Analog Tachometer

Digital Tachometer

Speedometer

Fuel Management Gauge

Analog Trim Meter

Coolant Pressure Meter

Coolant Temp. Meter

Hour Meter

Voltage Meter

Fuel Meter

Charge Warning Unit

Wire Harnesses

Wiring Diagrams

Digital Network Gauge (6Y8)

Digital Network Gauge Compatible Model

Digital Network Gauge Application

Digital Network Gauge Dimensions

Optional Equipments

Wire Harness