Table Of Contents - Yamaha YW50AP Service Manual

Table of Contents

Important Manual Information: Four Symbols3
How To Use This Manual4
Symbols5
Index6
Table Of Contents7
General Information15
Scooter Identification15
Preparation For Removal And Disassembly16
Replacement Parts16
Gaskets, Oil Seats And O-Rings16
Important Information16
Bearings And Oil Seals17
Circlips17
Checking Of Connections18
How To Use The Conversion Table19
Special Tools Table20
General Specification22
Maintenance Specification25
General Torque Specifications32
Lubrication Points And Lubrication Type33
Cable Routing35
Periodic Maintenance/Lubrication Intervals40
Periodic Inspection And Adjustments41
Cover And Panel42
Sidecover And Seat42
Lower Cowling, Upper Cover, Leg Shield 1, 2 And Footrest Board43
Handlebar Cover (Front And Rear)44
Engine Idle Speed Adjustment45
Throttle Cable Free Adjustment46
Autolube Pump Air Bleeding47
Spark Plug Inspection48
Engine Oil Level Inspection49
Transmission Oil Replacement50
Air Filter Element Cleaning51
V-Belt Inspection53
Chassis54
Front Brake Lever Free Play Check54
Rear Brake Lever Free Play Check54
Brake Pad Inspection54
Brake Shoe Inspection55
Brake Fluid Level Ispection55
Air Bleeding (Hydraulic Brake System)56
Air Bleeding Steps56
Steering Adjustment57
Tire Inspection58
Wheel Inspection61
Front Fork Inspection61
Rear Shock Absorber Inspection61
Seat Lock Cable Adjustment61
Cable Checking And Lubricating62
Levers Lubricating62
Centerstand Lubricating62
Electrical Battery Inspection63
Battery Charging Method63
Battery: First Aid In Case Of Bodily Contact64
Condition Of Charge In Battery Table65
Charging Method Of Mf Battery65
Battery Charging Method Using A Variable-Current Type Charger66
Battery Charging Method Using A Constant-Voltage Type Charger67
Fuse Inspection68
Head Light Beam Adjustment69
Headlight Bulb Replacement69
Turn Signal Bulb Replacement70
Taillight Bulb Replacement71
License Light Bulb Replacement71
Engine Overhaul72
Engine Wireharness And Cables Removal72
Engine Removal73
Cylinder Head, Cylinder And Piston74
Piston Pin And Piston Removal75
Cylinder Head Inspection75
Cylinder And Piston Inspection76
Piston To Cylinder Clearance Measurement Steps76
Piston Rings Inspection78
Piston Pin And Piston Pin Bearing78
Piston Pin And Piston Installation79
Cylinder And Cylinder Head80
Kick Starter And Crankcase Cover82
V-Belt, Clutch And Secondary/Primary Sheave82
Kick Starter83
Kick Starter Installation84
V-Belt, Clutch And Secondary/Primary Sheave Removal85
Secondary Sheave Disassembly86
Primary Sheave Removal87
Clutch Inspection88
V-Belt Inspection And Replacement89
Primary Sheave Inspection90
Secondary Sheave91
Secondary Sheave Installation92
Primary Sheave93
Starter Clutch And Starter Motor95
Starter Clutch And Gears Inspection97
Cdi Magneto98
Cdi Magneto Removal99
Cdi Magneto Installation99
Autolube Pump100
Autolube Pump Installation101
Transmission102
Crankcase And Reed Valve Removal104
Crankcase (Right) Removal106
Checking The Crankcase106
Checking The Bearings And Oil Seals106
Reed Valve Inspection107
Crankcase (Right) Installation107
Crankshaft109
Crankshaft Removal110
Crankshaft Inspection110
Crankshaft Installation111
To Avoid Scratching The Crankshaft111
Carburetor112
Carburetor Disassembly113
Carburetor Inspection114
Float Height Measurement Steps115
Carburetor Assembly116
Fuel Level Adjustment117
Auto Choke Inspection118
Fuel Cock Inspection119
Front Wheel And Brake Disc120
Front Wheel Disassembly121
Front Wheel Inspection122
Brake Disc Inspection123
Front Wheel Assembly123
Front Wheel Installation124
Wheel Static Balance Adjustment125
Front Brake: Brake Pad127
Brake Pad Replacement128
Master Cylinder131
Master Cylinder Disassembly132
Master Cylinder Inspection133
Master Cylinder Assembly133
Master Cylinder Installation134
Caliper136
Caliper Disassembly137
Brake Caliper Disassembly138
Caliper Inspection138
Brake Caliper Assembly139
Brake Caliper Installation139
Rear Wheel140
Rear Brake141
Rear Wheel Inspection142
Rear Brake Inspection142
Rear Brake Installation143
Handlebar144
Steering148
Steering Removal149
Steering Inspection150
Steering Installation150
Front Fork153
Front Fork Disassembly154
Front Fork Removal155
Disassembly Of The Front Fork155
Inspection Of The Front Fork156
Front Fork Installation158
Electrical Components: List And Diagram159
Circuit Diagram160
Color Code161
Checking Switches162
Switch Connection As Shown In This Manual162
Swutch Position And Terminal Connection163
Checking The Bulbs And Bulb Sockets164
Types Of Bulbs164
Checking The Condition Of The Bulbs165
Checking The Condition Of The Bulb Sockets166
Ignition System: Circuit Diagram167
Ignition System: Troubleshooting168
Charging System: Circuit Diagram172
Charging System: Troubleshooting173
Electric Starting System: Circuit Diagram176
Electric Starting System: Troubleshooting177
Starter Motor180
Starter Motor Disassembly181
Electric Starting System: Inspection And Repair182
Lighting System: Circuit Diagram184
Lighting System: Troubleshooting185
Signal System: Circuit Diagram191
Signal System: Troubleshooting192
Signal System Check194
Auto Choke System: Circuit Diagram200
Auto Choke System: Troubleshooting201
Troubleshooting203
Poor Idle Speed Performance205
Pooer Medium And High Speed Performance205
Faulty Automatic (V-Belt Type)206
Overheat207
Poor Speed207
Improper Kicking208
Faulty Brake209
Unstable Handling210
Faulty Signal And Lighting System211
Wiring Diagram213