Yamaha YTZ250S 1986 Manuals

Yamaha YTZ250S 1986 Manuals

Manuals and User Guides for Yamaha YTZ250S 1986. We have 1 Yamaha YTZ250S 1986 manual available for free PDF download: Service Manual

Yamaha YTZ250S 1986 Service Manual

Yamaha YTZ250S 1986 Service Manual (146 pages)

Brand: Yamaha | Category: Motorcycle | Size: 4.23 MB

Table of Contents

D General Information

2
- Table of Contents
  2
- MACHINE Identification
  3
  - Vehicle Identification Number
    3
  - Engine Serial Number
    3
- Control Functions
  4
- Fuel, Oil and Coolant
  6
  - Fuel
    6
  - Engine Mixing Oil
    6
  - Transmission Oil
    6
  - Coolant Level
    7
  - Coolant Draining
    8
  - Replenishing Coolant
    8
- Safety Information
  8
- Riding Your Tri-Moto
  11
  - Getting to Know Your Tri-Moto
    11
  - Learning to Ride Your Tri-Moto
    11
  - Turning Your Tri-Moto
    12
  - Climbing Uphill
    13
  - Riding Downhill
    14
  - Crossing a Slope
    14
  - Crossing through Shallow Water
    15
  - Riding over Rough Terrain
    15
  - Sliding and Skidding
    15
  - What to Do if
    16
- Preoperation Checks
  17
- Starting and Break-In
  18
  - Starting a Cold Engine
    18
  - Starting a Warm Engine
    18
  - Break-In Procedures
    18
- Cleaning and Storage
  19
  - Cleaning
    19
  - Storage
    20
Fj Regular Maintenance and Adjustment

22
- Maintenance Intervals
  23
- Lubrication
  25
- Special Tools
  27
  - For Tune-Up
    27
  - For Engine Service
    27
  - For Chassis Service
    28
  - For Electrical Components
    28
- Minor Maintenance and Adjustments
  28
  - Spark Plug
    28
  - Ignition Timing
    29
  - Throttle Lever Adjustment
    30
  - Idle Speed
    30
  - Air Filter
    31
  - Clutch
    32
  - Front Brake Adjustment
    32
  - Rear Brake Pedal Height Adjustment
    32
  - Checking the Front and Rear Brake Pads
    33
  - Inspecting the Brake Fluid Level
    33
  - Drive Chain Slack Check
    33
  - Drive Chain Slack Adjustment
    34
  - Drive Chain Cleaning and Lubrication
    34
  - Steering Head Adjustment
    34
  - Wheel Bearings
    35
  - Fuel Cock
    36
  - Tires
    36
  - Cable Inspection and Lubrication
    37
  - Brake and Change Pedal/Clutch and Brake Levers
    37
  - Headlight Bulb Replacement
    37
  - Headlight Beam Adjustment
    38
II Engine Maintenance and Repair

40
- Engine Maintenance and
  42
- PREPARATION for Service
  42
- Carburetor
  43
  - Tuning
    44
  - Tuning and Repair Parts
    48
  - Main Jet Replacement
    48
  - Removal
    49
  - Inspection
    49
  - Float Height
    49
- Reed Valve
  50
  - Inspection
    50
- Exhaust Pipe and Muffler
  51
  - Removal
    51
  - Maintenance
    51
- Cylinder Head
  52
  - Removal
    52
  - Maintenance
    53
- Cylinder
  54
  - Removal
    54
  - Maintenance
    54
- Piston
  55
  - Maintenance
    55
  - Piston Clearance
    56
  - Piston Rings
    56
  - Piston Pin, Bearing
    57
  - Assembly
    57
- Crankcase Cover
  58
  - Removal
    58
  - Assembly
    58
- Water Pump
  59
  - Disassembly
    59
  - Inspection
    59
  - Assembly
    59
- Kick Starter
  60
  - Removal
    61
  - Inspection
    61
  - Assembly
    61
- Clutch
  62
  - Removal
    62
  - Maintenance
    63
  - Installation
    64
  - Mechanism Adjustment
    65
- Shifter
  66
  - Removal
    66
  - Inspection
    66
  - Installation
    66
- Engine Removal
  67
- Crankcase
  68
  - Crankcase Disassembly
    69
- Engine Mounting
  68
- Transmission and Shifter
  70
  - Inspection
    70
  - Bearing and Oil Seals
    71
  - Transmission Installation
    71
- Crankshaft
  72
  - Inspection
    72
  - Crankshaft Installation
    73
- COOLING System
  74
  - Radiator Removal
    75
  - Thermostatic Valve Removal
    75
  - Cooling System Checks
    75
10 Chassis Maintenance and Repair

78
- Chassis Maintenance and Repair
  80
- Front Wheel
  80
  - Removal
    80
  - Front Axle Inspection
    80
  - Front Wheel Inspection
    80
  - Replacing the Wheel Bearings
    80
  - Installing the Front Wheel
    81
- Rear Wheel
  81
  - Removal
    81
  - Rear Wheel Inspection
    81
  - Installing the Rear Wheel
    81
- Front Brake
  82
  - Brake Pad Replacement
    82
  - Caliper Disassembly
    83
  - Master Cylinder Disassembly
    83
  - Brake Inspection and Repair
    84
  - Brake Assembly
    85
- Rear Brake
  87
  - Brake Pad Replacement
    87
  - Caliper Disassembly
    87
  - Master Cylinder Disassembly
    87
  - Brake Inspection and Repair
    87
  - Brake Assembly
    87
- Front Fork
  88
  - Fork Oil Replacement
    91
  - Removal and Disassembly
    92
  - Inspection
    93
  - Assembly
    93
- Steering Head
  96
  - Adjustment
    97
  - Removal
    97
  - Inspection
    98
  - Installation
    98
- Rear Shock (Monocross Suspension "De Carbon" System)
  100
  - Rear Shock Setting
    101
  - Handling Notes
    102
  - Notes on Disposal (Yamaha Dealers Only)
    102
  - Removal
    103
- Swingarm
  104
  - Swingarm Free Play Inspection
    105
  - Removal
    105
  - Inspection
    106
  - Assembly
    107
- Drive Chain
  108
II Electrical Troubleshooting

110
- Electrical Troubleshooting
  112
- Ytz250S Wiring Diagram
  112
- IGNITION System
  113
- LIGHTING System
  117
- SIGNAL System
  121
Mappendices

124
- Troubleshooting Guide
  125
  - Engine Is Hard to Start or Does Not Start
    125
  - Poor High Speed Performance
    126
  - Overheat
    127
  - Low Coolant Level
    127
  - Transmission and Shifter
    128
  - Clutch
    128
  - Chassis
    129
- Specifications
  130
- Definition of Units
  140
- GENERAL TORQUE Specifications
  140
- Conversion Tables
  141
- Cable Routing
  142
- Maintenance Record
  146
- Noise Regulation
  146

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