Yamaha YFM250XL(C) Service Manual page 9

ELECTRICAL ............................................................................................... 3-38
BATTERY INSPECTION ...................................................................... 3-38
FUSE INSPECTION ............................................................................. 3-41
HEADLIGHT BEAM ADJUSTMENT ................................................... 3-42
HEADLIGHT BULB REPLACEMENT .................................................. 3-42
ENGINE REMOVAL ...................................................................................... 4-1
PREPARATION FOR REMOVAL ........................................................... 4-1
FRONT FENDER AND REAR FENDER ................................................. 4-1
ENGINE OIL .......................................................................................... 4-2
EXHAUST PIPE AND MUFFLER .......................................................... 4-2
CARBURETOR ...................................................................................... 4-2
STARTER MOTOR ................................................................................ 4-3
REAR BRAKE CABLES AND FOOTREST ............................................ 4-3
WIRINGS AND HOSES ......................................................................... 4-3
REAR WHEEL DRIVE ASSEMBLY AND SWINGARM ........................ 4-4
ENGINE REMOVAL .............................................................................. 4-4
ENGINE DISASSEMBLY .............................................................................. 4-5
CYLINDER HEAD ASSEMBLY, CYLINDER AND PISTON .................. 4-5
STARTER PULLEY CDI MAGNETO ..................................................... 4-8
MIDDLE DRIVEN PINION GEAR ........................................................ 4-10
PRIMARY AND SECONDARY CLUTCHES ........................................ 4-11
OIL PUMP AND SHIFTER ................................................................... 4-13
BALANCER DRIVEN GEAR ................................................................ 4-14
CRANKCASE (LEFT) ........................................................................... 4-15
BALANCER SHAFT, TRANSMISSION AND CRANKSHAFT ............ 4-16
CYLINDER HEAD ................................................................................ 4-17
VALVE ................................................................................................. 4-18
RECOIL STARTER ............................................................................... 4-19
INSPECTION AND REPAIR ........................................................................ 4-20
CYLINDER HEAD ................................................................................ 4-20
INTAKE AND EXHAUST VALVE ........................................................ 4-20
VALVE GUIDE ..................................................................................... 4-21
VALVE SEAT ....................................................................................... 4-22
VALVE SPRING ................................................................................... 4-25
VALVE INSTALLATION ...................................................................... 4-26
CAM SHAFT ........................................................................................ 4-27
ROCKER ARM AND ROCKER ARM SHAFT ...................................... 4-28
CHAPTER 4.
ENGINE OVERHAUL