Yamaha YP125RA 2014 Manuals

Manuals and User Guides for Yamaha YP125RA 2014. We have 1 Yamaha YP125RA 2014 manual available for free PDF download: Service Manual

Yamaha YP125RA 2014 Service Manual

Yamaha YP125RA 2014 Service Manual (482 pages)

Brand: Yamaha | Category: Scooter | Size: 16.23 MB

Table of Contents

Table of Contents

7
- General Information
  9
- Identification
  10
- Vehicle Identification Number
  10
- Model Label
  10
- Features
  11
- Outline of the Fi System
  11
- Fi System
  12
- OUTLINE of the ABS (for YP125RA)
  13
- Abs Component Functions
  17
- Abs Operation
  23
- Abs Warning Light and Operation
  26
- Instrument Functions
  27
- Important Information
  33
- Preparation for Removal and Disassembly
  33
- Replacement Parts
  33
- Gaskets, Oil Seals and O-Rings
  33
- Lock Washers/Plates and Cotter Pins
  33
- Bearings and Oil Seals
  34
- Circlips
  34
- Rubber Parts
  34
- Basic Service Information
  35
- Quick Fasteners
  35
- Electrical System
  36
- Special Tools
  45
Specifications

47
- General Specifications
  48
- Engine Specifications
  49
- Chassis Specifications
  55
- Electrical Specifications
  58
- General Tightening Torque Specifications
  61
- Tightening Torques
  61
- Engine Tightening Torques
  62
- Chassis Tightening Torques
  65
- Engine
  69
- Lubrication Points and Lubricant Types
  69
- Chassis
  71
- Lubrication System Diagrams
  72
- Cooling System Diagrams
  74
- Cable Routing
  76
Periodic Checks and Adjustments

111
- General Maintenance and Lubrication Chart
  112
- Introduction
  112
- Periodic Maintenance
  112
- Periodic Maintenance Chart for the Emission Control System
  112
- Adjusting the Valve Clearance
  115
- Checking the Fuel Line
  115
- Checking the Spark Plug
  115
- Checking the Throttle Body Joint and Intake Manifold
  117
- Adjusting the Exhaust Gas Volume
  118
- Checking the Breather Hose
  118
- Checking the Exhaust System
  118
- Replacing the Air Filter Element
  119
- Checking the Brake Operation
  120
- Cleaning the V-Belt Case Air Filter Element
  120
- BLEEDING the HYDRAULIC BRAKE SYSTEM (for YP125R)
  121
- Checking the Brake Fluid Level
  121
- BLEEDING the HYDRAULIC BRAKE SYSTEM (ABS) (for YP125RA)
  122
- Checking the Front Brake Pads
  123
- CHECKING the REAR BRAKE PADS (for YP125R)
  123
- Checking the Front Brake Hoses
  124
- Checking the Rear Brake Hose
  124
- CHECKING the REAR BRAKE PADS (for YP125RA)
  124
- Checking the Tires
  124
- Checking the Wheels
  124
- Checking and Adjusting the Steering Head
  126
- Checking the Wheel Bearings
  126
- Checking the Chassis Fasteners
  127
- Lubricating the Levers
  127
- Adjusting the Rear Shock Absorber Assemblies
  128
- Checking the Centerstand
  128
- Checking the Front Fork
  128
- Checking the Rear Suspension
  128
- Checking the Sidestand
  128
- Checking the Sidestand Switch
  128
- Lubricating the Centerstand
  128
- Lubricating the Sidestand
  128
- Checking the Engine Oil Level
  129
- Changing the Engine Oil
  130
- Checking the Coolant Level
  131
- Checking the Cooling System
  131
- Changing the Coolant
  132
- Changing the Final Transmission Oil
  133
- Checking and Lubricating the Cables
  134
- Checking the Brake Light Switches
  134
- Replacing the V-Belt
  134
- Checking the Switches, Lights and Signals
  135
- Checking the Throttle Grip Operation
  135
- Lubricating the Rear Suspension
  135
- Adjusting the Headlight Beam
  136
- Replacing the Headlight Bulb
  136
Chassis

137
- General Chassis
  140
- Installing the Center Panels
  149
- Installing the Storage Box
  149
- Removing the Center Panels
  149
- Installing the Rear Upper Cover
  150
- Removing the Rear Panels
  150
- Removing the Rear Upper Cover
  150
- Installing the Rear Panels
  151
- Installing the Upper Panel and Front Cowling Cover
  151
- Removing the Front Cowling Cover and Upper Panel
  151
- Installing the Front Upper Panel
  152
- Removing the Front Cowling
  152
- Removing the Front Upper Panel
  152
- Installing the Front Cowling
  153
- Removing the Main Switch Cover
  153
- Installing the Footrest Board
  154
- Installing the Main Switch Cover
  154
- Removing the Footrest Board
  154
- Disposing of a Seat Hinge Damper
  155
- Handling the Seat Hinge Damper
  155
- Front Wheel
  156
- Checking the Front Wheel
  159
- Disassembling the Front Wheel
  159
- REMOVING the FRONT WHEEL (for YP125R)
  159
- REMOVING the FRONT WHEEL (for YP125RA)
  159
- MAINTENANCE of the FRONT WHEEL SENSOR and SENSOR ROTOR (for YP125RA)
  160
- Assembling the Front Wheel
  161
- Adjusting the Front Wheel Static Balance
  162
- INSTALLING the FRONT WHEEL (FRONT BRAKE DISC) (for YP125R)
  163
- INSTALLING the FRONT WHEEL (FRONT BRAKE DISCS) (for YP125RA)
  164
- Rear Wheel
  166
- Adjusting the Rear Wheel Static Balance
  168
- Checking the Rear Wheel
  168
- Installing the Rear Wheel (Rear Brake Disc)
  168
- MAINTENANCE of the REAR WHEEL SENSOR ROTOR (for YP125RA)
  168
- REMOVING the REAR WHEEL (DISC) (for YP125R)
  168
- REMOVING the REAR WHEEL (DISC) (for YP125RA)
  168
- Checking the Front Brake Disc
  176
- Front Brake
  176
- Introduction
  176
- Replacing the Front Brake Pads
  177
- Checking the Front Brake Caliper
  178
- Disassembling the Front Brake Caliper
  178
- Removing the Front Brake Caliper
  178
- Assembling the Front Brake Caliper
  179
- Installing the Front Brake Caliper
  179
- Assembling the Front Brake Master Cylinder
  180
- Checking the Front Brake Master Cylinder
  180
- Removing the Front Brake Master Cylinder
  180
- Installing the Front Brake Master Cylinder
  181
- Rear Brake
  183
- Checking the Rear Brake Disc
  192
- Introduction
  192
- REPLACING the REAR BRAKE PADS (for YP125R)
  192
- REPLACING the REAR BRAKE PADS (for YP125RA)
  193
- DISASSEMBLING the REAR BRAKE CALIPER (for YP125RA)
  194
- Removing the Rear Brake Caliper
  194
- CHECKING the REAR BRAKE CALIPER (for YP125R)
  195
- CHECKING the REAR BRAKE CALIPER (for YP125RA)
  195
- Assembling the Rear Brake Caliper
  196
- INSTALLING the REAR BRAKE CALIPER (for YP125R)
  196
- INSTALLING the REAR BRAKE CALIPER (for YP125RA)
  197
- Assembling the Rear Brake Master Cylinder
  198
- Checking the Rear Brake Master Cylinder
  198
- Removing the Rear Brake Master Cylinder
  198
- Installing the Rear Brake Master Cylinder
  199
- ABS (ANTI-LOCK BRAKE SYSTEM) (for YP125RA)
  201
- Checking the Hydraulic Unit Assembly
  202
- Installing the Hydraulic Unit Assembly
  202
- Removing the Hydraulic Unit Assembly
  202
- Hydraulic Unit Operation Tests
  204
- Checking the Abs Warning Light
  207
- Handlebar
  208
- Checking the Handlebar
  210
- Installing the Handlebar
  210
- Removing the Handlebar
  210
- Front Fork
  213
- Disassembling the Front Fork Legs
  215
- Removing the Front Fork Legs
  215
- Assembling the Front Fork Legs
  216
- Checking the Front Fork Legs
  216
- Installing the Front Fork Legs
  218
- Steering Head
  220
- Checking the Steering Head
  222
- Installing the Steering Head
  222
- Removing the Lower Bracket
  222
- Rear Shock Absorber Assemblies and Swingarm
  224
- (For YP125RA)
  226
- Checking the Rear Shock Absorber Assembly
  226
- Checking the Swingarm
  226
- Maintenance of the Rear Wheel Sensor
  226
- Removing the Rear Shock Absorber Assemblies
  226
- Removing the Swingarm
  226
- Installing the Swingarm
  227
Engine

229
- Engine Inspection
  232
- Measuring the Compression Pressure
  232
- Engine Removal
  233
- Installing the Engine
  236
- Cylinder Head
  238
- Checking the Cylinder Head
  240
- Removing the Cylinder Head
  240
- Checking the Camshaft Sprocket
  241
- Checking the Timing Chain Tensioner
  241
- Installing the Cylinder Head
  242
- Camshaft
  245
- Checking the Camshaft
  246
- Checking the Decompression System
  246
- Removing the Camshaft
  246
- Checking the Rocker Arms and Rocker Arm Shafts
  247
- Installing the Camshaft and Rocker Arms
  248
- Valves and Valve Springs
  249
- Checking the Valves and Valve Guides
  250
- Removing the Valves
  250
- Checking the Valve Seats
  252
- Checking the Valve Springs
  253
- Installing the Valves
  254
- Checking the Cylinder and Piston
  257
- Cylinder and Piston
  257
- Removing the Piston
  257
- Checking the Piston Rings
  258
- Checking the Piston Pin
  259
- Checking the Timing Chain Guide
  259
- Installing the Piston and Cylinder
  259
- V-Belt Automatic Transmission
  261
- Removing the Primary Sheave
  264
- Removing the Secondary Sheave
  264
- Checking the Clutch Housing
  265
- Checking the Clutch Shoes
  265
- Checking the V-Belt
  265
- Disassembling the Secondary Sheave
  265
- Assembling the Primary Sheave
  266
- Checking the Primary Sheave
  266
- Checking the Primary Sheave Sliders
  266
- Checking the Primary Sheave Weights
  266
- Checking the Secondary Sheave
  266
- Assembling the Secondary Sheave
  267
- Installing the V-Belt
  268
- Starter Clutch and Generator
  270
- Checking the Starter Clutch
  272
- Removing the Generator
  272
- Removing the Starter Clutch
  272
- Installing the Generator
  273
- Installing the Starter Clutch
  273
- Electric Starter
  275
- Checking the Starter Motor
  277
- Oil Pump
  279
- Assembling the Oil Pump
  280
- Checking the Oil Pump
  280
- Installing the Oil Pump
  281
- Transmission
  282
- Checking the Transmission
  284
- Installing the Transmission
  284
- Removing the Transmission
  284
- Crankshaft
  285
- Checking the Crankshaft and Connecting Rod
  287
- Checking the Timing Chain and Timing Chain Guide
  287
- Disassembling the Crankcase
  287
- Removing the Crankshaft Assembly
  287
- Checking the Bearing and Oil Seal
  288
- Checking the Crankcase
  288
- Checking the Oil Pump Drive Gear
  288
- Checking the Oil Strainers
  289
- Installing the Crankshaft
  289
- Assembling the Crankcase
  290
Cooling System

293
- Checking the Radiator
  295
- Installing the Radiator
  295
- Radiator
  295
- Thermostat
  297
- Checking the Thermostat
  298
- Installing the Thermostat Assembly
  298
- Water Pump
  299
- Assembling the Water Pump
  300
- Checking the Water Pump
  300
- Disassembling the Water Pump
  300
- Installing the Water Pump
  301
Fuel System

303
- Fuel Tank
  304
- Checking the Fuel Pump Body
  305
- Installing the Fuel Pump
  305
- Installing the Fuel Tank
  305
- Removing the Fuel Pump
  305
- Removing the Fuel Tank
  305
- Checking the Fuel Pressure
  306
- Throttle Body
  307
- Checking the Fuel Injector
  309
- Checking the Throttle Body
  309
- Installing the Fuel Hose
  309
- Installing the Intake Manifold
  309
- Installing the Throttle Body
  309
- Removing the Fuel Hose
  309
- Checking the Isc (Idle Speed Control) Unit
  310
- Checking the Throttle Position Sensor
  310
Electrical System

311
- Circuit Diagram
  314
- Ignition System
  314
- Troubleshooting
  316
- CIRCUIT DIAGRAM (for YP125R)
  318
- Electric Starting System
  318
- CIRCUIT DIAGRAM (for YP125RA)
  320
- STARTING CIRCUIT CUT-OFF SYSTEM OPERATION (for YP125R)
  322
- STARTING CIRCUIT CUT-OFF SYSTEM OPERATION (for YP125RA)
  324
- Troubleshooting
  326
- Charging System
  328
- Circuit Diagram
  328
- Troubleshooting
  330
- Circuit Diagram
  332
- Lighting System
  332
- Troubleshooting
  334
- CIRCUIT DIAGRAM (for YP125R)
  336
- Signaling System
  336
- CIRCUIT DIAGRAM (for YP125RA)
  338
- Troubleshooting
  340
- Circuit Diagram
  346
- Cooling System
  346
- Troubleshooting
  348
- CIRCUIT DIAGRAM (for YP125R)
  350
- Fuel Injection System
  350
- CIRCUIT DIAGRAM (for YP125RA)
  352
- Ecu Self-Diagnostic Function
  354
- Diagnostic Mode
  355
- Troubleshooting Method
  355
- Troubleshooting Details
  358
- CIRCUIT DIAGRAM (for YP125R)
  386
- Fuel Pump System
  386
- CIRCUIT DIAGRAM (for YP125RA)
  388
- Troubleshooting
  390
- Circuit Diagram
  392
- Immobilizer System
  392
- General Information
  394
- Part Replacement and Key Code Registration Requirements
  394
- Self-Diagnosis Fault Code Indication
  398
- Troubleshooting
  398
- ABS (ANTI-LOCK BRAKE SYSTEM) (for YP125RA)
  402
- Circuit Diagram
  402
- Abs Components Chart
  404
- Abs Coupler Location Chart
  406
- Abs Troubleshooting Outline
  408
- Maintenance of the Abs Ecu
  408
- Basic Instructions for Troubleshooting
  409
- Basic Process for Troubleshooting
  410
- [A-1] Only the Abs Warning Light Fails to Come on
  411
- [A-2] the Abs Warning Light and All Other Indicator Lights Fail to Come on
  411
- [A-3] the Abs Warning Light Comes on
  411
- [A] Checking the Abs Warning Light
  411
- [B-1] Malfunction Are Currently Detected
  412
- [B-2] Diagnosis Using the Fault Codes
  412
- [B-3] Deleting the Fault Codes
  438
- [C-1] Final Check
  438
- Electrical Components
  440
- Checking the Switches
  444
- Checking the Bulbs and Bulb Sockets
  447
- Checking the Fuses
  448
- Checking and Charging the Battery
  449
- Checking the Relays
  452
- Checking the Turn Signal/Hazard Relay
  453
- Checking the Diodes
  454
- Checking the Ignition Coil
  455
- Checking the Spark Plug Cap
  455
- Checking the Crankshaft Position Sensor
  456
- Checking the Ignition Spark Gap
  456
- Checking the Lean Angle Sensor
  457
- Checking the Starter Motor Operation
  457
- Checking the Fuel Sender
  458
- Checking the Rectifier/Regulator
  458
- Checking the Stator Coil
  458
- Checking the Radiator Fan Motor
  459
- CHECKING the SPEED SENSOR (for YP125R)
  459
- Checking the Coolant Temperature Sensor
  460
- Checking the Throttle Position Sensor
  460
- Checking the Intake Air Pressure Sensor
  461
- Checking the Intake Air Temperature Sensor
  461
- Checking the Air Temperature Sensor
  462
- Checking the Fuel Injector
  462
- Checking the Isc (Idle Speed Control) Unit
  463
Troubleshooting

465
- General Information
  466
- Incorrect Engine Idling Speed
  466
- Starting Failure/Hard Starting
  466
- Troubleshooting
  466
- Faulty Clutch
  467
- Overheating
  467
- Poor Medium-And-High-Speed Performance
  467
- Faulty Front Fork Legs
  468
- Faulty Lighting or Signaling System
  468
- Overcooling
  468
- Poor Braking Performance
  468
- Unstable Handling
  468
- Self-Diagnostic Function and Diagnostic Code Table
  471

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