YAMAHA BR250F Manuals

Manuals and User Guides for YAMAHA BR250F. We have 1 YAMAHA BR250F manual available for free PDF download: Service Manual

YAMAHA BR250F Service Manual

YAMAHA BR250F Service Manual (191 pages)

Brand: YAMAHA | Category: Offroad Vehicle | Size: 10.82 MB

Table of Contents

Chapter 1. General

4
- Table of Contents
  4
- External View
  5
- Machine Identification
  6
- Pre-Season Preparation
  6
- Storage
  6
- Terms
  6
- Maintenance
  7
- High Altitude Tuning
  9
- Special Tools
  10
Chapter 2. Engine

11
- Engine Removal
  12
- Disassembly and Inspection
  13
  - Recoil Starter
    13
  - Flywheel Magneto
    14
  - Oil Pump
    15
  - Top End
    17
  - Bottom End
    21
- Assembly and Adjustment
  23
  - Bottom End
    23
  - Top End
    24
  - Flywheel Magneto
    25
  - Recoil Starter
    26
  - Oil Pump Gear Case
    28
- Engine Installation
  30
Chapter 3. Carburetion

31
- Carburetor
  32
  - Removal
    32
  - Disassembly
    33
  - Inspection
    33
  - Assembly
    33
  - Installation
    34
- Tuning and Adjustment
  34
  - Carburetor Tuning Data
    34
  - Starter Cable Adjustment
    35
  - Throttle Cable Adjustment
    36
  - Oil Pump Cable Adjustment
    36
  - Low Speed Tuning
    37
  - MID-Range and High Speed Tuning
    37
  - Troubleshooting
    38
- Intake
  40
Chapter 4. Power Train

41
- Clutch Tuning
  42
  - Clutch Setting Data
    43
  - Changing Clutch Engagement and Shift RPM
    44
- Sheave Alignment
  42
- V-Belt
  44
  - Removal
    44
  - Inspection
    44
- Primary Sheave
  45
  - Removal
    45
  - Disassembly
    46
  - Inspection
    46
  - Assembly
    47
- Secondary Sheave
  49
  - Removal
    49
  - Inspection
    50
  - Assembly
    50
- Chain Case
  51
  - Disassembly
    52
  - Inspection
    52
  - Gearing
    53
  - Assembly
    53
- Brake
  55
  - Disassembly
    55
  - Inspection
    56
  - Assembly
    56
  - Brake Adjustment
    56
- Slide Rail Suspension
  57
  - Removal
    57
  - Inspection
    58
  - Installation
    59
- Drive
  60
  - Removal
    60
  - Inspection
    61
  - Assembly
    61
  - Track Adjustment
    61
Chapter 6. Electrical

69
- Circuit Diagram
  70
- IGNITION System
  70
- Troubleshooting
  70
- Ignition Timing
  71
- Spark Gap Test
  72
- Ignition Coil
  73
- Spark Plug
  73
- C.D.1. Unit
  74
- Pulser and Charge Coil
  74
- Circuit Diagram
  75
- Headlight Beam
  75
- Lighting System
  75
- Lighting Coil
  76
- Voltage Regulator
  76
Chapter 7. Appendix

78
- Specifications
  79
- Tightening Torque
  82
- Conversion Tables
  84
- Exploded Diagrams
  85
  - Recoil Starter
    85
  - Flywheel Magneto
    86
  - Oil Pump
    87
  - Oil Pump Drive Gear
    88
  - Top End
    89
  - Bottom End
    90
  - Carburetor
    91
  - Intake
    92
  - Secondary Sheave
    94
  - Chain Case
    95
  - Brake
    96
  - Slide Rail
    97
  - Suspension Wheels
    98
  - Drive Axle
    99
  - Steering
    100
  - Ski
    101
  - Ski Shock
    102
  - Oil Tank
    103
  - Fuel Tank
    104
  - Electrical Components
    105
  - Control Cables
    107
    
    Bends, Cracks, and Wear
    115
    
    Abnormal Noise
    115
    
    Loose Connection and Breaks in the Fuel and Pulse Pipes
    115
    
    Loose Connection and Breaks in the Oil Pipes
    115
    
    Loose Connection and Breaks in the Oil Delivery Pipe
    115
    
    Bends and Cracks
    116
    
    Ski Adjustment
    116
    
    Ski Runner Wear
    116
    
    Breaks in Fuel Tank
    116
    
    Fuel Filter Loose Connection and Breaks in Fuel Pipe
    116
Table of Contents

159
- General Information
  160
  - Machine Identification
    160
    
    Frame Serial Number
    160
    
    Engine Serial Number
    160
- Chassis
  161
  - Fuel Sub Tank
    161
  - Job Instruction Chart
    162
- Electrical
  163
  - Circuit Diagram
    163
  - Electrical Component
    165
  - Ignition System
    166
    
    Circuit Diagram
    166
    
    Troubleshooting
    167
    
    Spark Plug Cap
    168
    
    Ignition Coil
    168
    
    Source Coil
    168
    
    Spark Plug
    169
    
    Throtile Override System (T.o.r.s.)
    169
    
    Handlebar Switch (Right)
    170
    
    Carburetor Switch
    170
    
    Main Switch
    171
  - Lighting System
    172
    
    Circuit Diagram
    172
    
    Troubleshooting
    173
    
    Bulb (S)
    174
    
    Headlight Beam Switch
    174
- Specifications
  175
  - General Specifications
    175
  - Maintenance Specifications
    177
    
    Engine
    177
    
    Power Train
    181
    
    Chassis
    185
    
    Electrical
    186
  - General Torque Specifications
    187
  - Cable Routing
    188

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