Yamaha YZ125X1, Owner'S Service Manual

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CONTENTS
CHAPTER 1
GENERAL INFOR-
MATION
DESCRIPTION ................. 1-1
MACHINE
IDENTIFICATION ............. 1-2
INCLUDED PARTS .......... 1-2
IMPORTANT
INFORMATION................. 1-2
CHECKING OF CONNEC-
TION ................................. 1-3
SPECIAL TOOLS ............. 1-4
CONTROL FUNCTIONS .. 1-7
STARTING AND
BREAK-IN ........................ 1-7
TORQUE-CHECK
POINTS............................. 1-9
CLEANING AND
STORAGE ...................... 1-10
CHAPTER 2
SPECIFICATIONS
GENERAL SPECIFICA-
TIONS ............................... 2-1
MAINTENANCE SPECIFICA-
TIONS ............................... 2-2
TIGHTENING TORQUES . 2-7
CABLE ROUTING
DIAGRAM....................... 2-12
CHAPTER 3
REGULAR INSPEC-
TION AND AD-
JUSTMENTS
MAINTENANCE
INTERVALS...................... 3-1
PRE-OPERATION
INSPECTION AND MAINTE-
NANCE ............................. 3-3
ENGINE ............................ 3-5
CHASSIS ..........................3-8
ELECTRICAL ................. 3-18
CHAPTER 4
ENGINE
SEAT, FUEL TANK AND
SIDE COVERS..................4-1
EXHAUST PIPE AND SI-
LENCER ...........................4-3
RADIATOR .......................4-5
CARBURETOR AND REED
VALVE ..............................4-7
CYLINDER HEAD, CYLIN-
DER AND PISTON .........4-12
CLUTCH .........................4-19
KICK SHAFT AND SHIFT
SHAFT ............................4-23
YPVS GOVERNOR.........4-28
WATER PUMP................4-30
CDI MAGNETO............... 4-33
ENGINE REMOVAL .......4-35
CRANKCASE AND CRANK-
SHAFT ............................4-39
TRANSMISSION, SHIFT
CAM AND SHIFT FORK.4-44
CHAPTER 5
CHASSIS
FRONT WHEEL AND REAR
WHEEL .............................5-1
FRONT BRAKE AND REAR
BRAKE .............................5-6
FRONT FORK................. 5-16
HANDLEBAR ................. 5-24
STEERING......................5-29
SWINGARM....................5-33
REAR SHOCK
ABSORBER....................5-38
CHAPTER 6
ELECTRICAL
ELECTRICAL COMPO-
NENTS AND WIRING DIA-
GRAM ...............................6-1
IGNITION SYSTEM...........6-2
CHAPTER 7
TUNING
ENGINE.............................7-1
CHASSIS ..........................7-6