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Table Of Contents - Yamaha F20A Service Manual

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Table of Contents

How To Use This Manual4

Important Information6

Systeme D'alimentation11

Table Of Contents13

General Information14

Identification Serial Number16

Starting Serial Numbers16

Safety While Working18

Fire Prevention18

Self-Protection18

Oils, Greases And Sealing Fluids18

Good Working Practices20

Safe Disassembly And Assembly22

Special Tools24

Outillage Special25

Removal And Installation28

Driver Rod (M10)30

P/N. 90890-0660431

P/N. Yb-0607131

P/N. 90890-0660631

P/N. 90890-0660231

P/N. 90890-0660531

P/N. Yb-0608232

32. Ball Bearing Attachment32

(Oil Seal Installer)32

P/N. Yb-0616832

P/N. Yb-0607832

P/N. Yb-0621932

Bearing Inner Race Installer32

Specifications34

General Specifications36

Maintenance Specifications40

Caracteristiques D'entretien41

Boitier D'helice47

Partie Electricite47

Wartungsdaten51

Abmessungen Des Außenborders53

Abmessungen Der53

Motorhalterung53

Tightening Torques54

Schraubenanzugsmomente55

General Tightening Torques58

Torsion De Apriete59

Torsiones De Apriete59

Periodic Inspection And Adjustment60

Maintenance Interval Chart62

Fuel System Periodic Service66

Control System Periodic Service66

Fuel Filter Replacement66

Throttle Link Rod Check66

Water Separator Drain Hole66

Idle Speed Adjustment68

Start-In-Gear Protection Device Adjustment68

Engine Oil Level70

Engine Oil Replacement70

Valve Clearance Adjustment72

Power Trim And Tilt (Ptt) System Inspection74

Ptt Fluid Check74

Lower Unit Inspection76

Hydraulic System Air Bleeding76

Gear Oil Check76

Lower Unit Leakage Check78

Bloc De Propulsion79

Lubrication Points84

Fuel Joint, Fuel Filter, Fuel Pump Exploded Diagram88

Fuel Pump Exploded Diagram92

Carburetor Unit Exploded Diagram96

Carburetor Unit Disassembly98

Carburetor Exploded Diagram100

Carburetor Disassembly100

Carburetor Inspection106

Ausbau Und Einbau111

Power Unit Exploded Diagram114

Power Unit Removal114

Removal And Installation Chart114

Flywheel Magneto Exploded Diagram120

Starter Hub Removal122

Flywheel Magneto Removal122

Service Points122

Flywheel Magneto Installation124

Starter Hub Installation124

Recoil Starter Exploded Diagram126

Cartridge Spring Installation132

Sheave Drum Installation132

Starter Rope Installation134

Recoil Starter Checking134

Stator And Timing Belt Exploded Diagram136

Driven Sprocket Removal And Installation138

Timing Belt Installation138

Electrical Unit Exploded Diagram140

Control Unit Exploded Diagram146

Cylinder Head And Oil Pump Exploded Diagram150

Oil Pump Exploded Diagram154

Cylinder Head Inspection156

Oil Pump Inspection156

Camshaft And Valves Exploded Diagram158

Valve Inspection162

Valve Spring Inspection164

Rocker Arm And Rocker Arm Shaft Inspection166

Camshaft Inspection166

Valve Guide Replacement168

Valve Installation168

Valve Seat Refacing170

Valve Seat Cutting Guidelines170

Oil Filter Cartridge, Thermostat, And Exhaust Cover Exploded Diagram174

Thermostat Inspection178

Crankcase, Crankshaft Assy, And Cylinder Body Exploded Diagram180

Cylinder Inspection188

Piston Inspection188

Piston-To-Cylinder Clearance190

Piston Pin Inspection190

Piston Ring Inspection190

Crankshaft Inspection192

Main-Bearing Oil Clearance192

Crankcase Main Journal Color Code Indicator194

Big-End Oil Clearance196

Connecting Rod Color Code Indicator198

Piston Ring Installation198

Oil Seal Installation200

Lower Unit Exploded Diagram206

Antriebseinheit Unidad Inferior207

Water Pump Exploded Diagram210

Propeller Shaft Assy Exploded Diagram214

Propeller Shaft Assy. Removal218

Oil Seal Housing Assembly218

Propeller Shaft Housing Assy Exploded Diagram222

Propeller Shaft Housing Assy. Disassembly224

Propeller Shaft Housing Assy. Assembly224

Forward Gear And Drive Shaft Exploded Diagram228

Forward And Reverse Gear Disassembly232

Forward Gear Disassembly232

Drive Shaft Disassembly234

Lower Case Disassembly234

Forward Gear Assembly236

Drive Shaft Assembly236

Lower Case Assembly238

Forward Gear And Drive Shaft Installation238

Shim Selection242

Pinion Gear Shim242

Forward Gear Shim246

Available Shim Thickness246

Reverse Gear Shim250

Shimming (Except For Usa And Canada)254

Shim Selection (Except For Usa And Canada)254

Backlash Measurement264

Forward Gear264

Backlash Measuring Steps266

Reverse Gear268

Bracket Unit272

Steering Handle Exploded Diagram276

Steering Friction (Mh, Eh-Option) Exploded Diagram284

Steering Friction Installation288

Bottom Cowling Exploded Diagram290

Upper Case Assy Exploded Diagram294

Oil Pan Exploded Diagram300

Steering Bracket Exploded Diagram302

Power Trim And Tilt (Ptt) Unit Exploded Diagram306

Clamp Bracket (Mh, Eh, E) Exploded Diagram310

Clamp Bracket Exploded Diagram312

Clamp Bracket (Eht, Et) Exploded Diagram314

Swivel Bracket Exploded Diagram318

Tilt Rod Exploded Diagram322

Tilt Rod Service Points326

Tilt Rod Removal326

Tilt Piston Removal326

Tilt Piston Installation328

Tilt Rod Installation328

Air Bleeding330

Ptt Motor, Pump Housing And Tilt Cylinder Exploded Diagram334

Pump Housing Exploded Diagram338

Gear Pump Exploded Diagram344

Ptt Motor Exploded Diagram346

Motor Inspection350

Ptt Motor Assembly352

Electrical System354

Sistemas Eléctricos355

Extraccion E Instalacion357

Electrical Components Front And Rear Views358

Electrical Components Port Side View360

Starboard Side View362

Wire Harness (Mh) Wiring Diagram364

Wire Harness (Eh) Wiring Diagram366

Wire Harness (Eht) Wiring Diagram368

Wire Harness (E) Wiring Diagram370

Wire Harness (Et) Wiring Diagram372

Electrical Analysis374

Digital Circuit Tester374

Peak Voltage Measurement374

Peak Voltage Adaptor374

Test Harness (For The Pulser Coil And Stator Coil)376

Ignition System378

Ignition Spark Gap380

Gen381

Ignition System Peak Voltage382

Spark Plug Cap384

Engine Stop Switch (Mh, Eh, Eht)384

Ignition Control System386

Oil Pressure Switch388

Engine Temperature Sensor388

Low-Oil-Pressure Warning Lamp390

Starting System Diagram392

Wire Harness Check394

Wire Connections Check394

Starter Relay Check394

Starter Switch (Eh, Eht) Check396

Neutral Switch (Eh, Eht) Check396

Starter Motor Exploded Diagram398

Starter Motor Service Points402

Pinion Gear Assy. Inspection402

Armature Inspection402

Brush Holder Inspection404

Charging System Diagram406

Charging System Peak Voltage408

Enrichment Control System Diagram410

Power Bobbin Inspection412

Electrothermal Ram Inspection412

Power Trim And Tilt (Ptt) Control System (Eht)414

Power Trim And Tilt (Ptt) Control System (Et)416

Trailer Switch Check418

Ptt Relay Check418

Trouble-Analysis422

Trouble-Analysis Chart424

Wiring Diagram - Model Mh432

Wiring Diagram - Model Eh434

Wiring Diagram - Model Eht436

Wiring Diagram - Model E438

Wiring Diagram - Model Et440

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This manual is also suitable for:

F25a F25x