5
ENGINE
..........................................................................................5-1
REMOVING THE SILENCER .....................................................................5-5
REMOVING THE EXHAUST PIPE 2 ..........................................................5-5
REMOVING THE DRIVE SPROCKET .......................................................5-5
REMOVING THE ENGINE .........................................................................5-6
CHECKING THE SILENCER AND EXHAUST PIPE ..................................5-6
CHANGING THE SILENCER FIBER..........................................................5-6
INSTALLING THE ENGINE ........................................................................5-7
INSTALLING THE BRAKE PEDAL.............................................................5-8
INSTALLING THE DRIVE SPROCKET ......................................................5-8
INSTALLING THE EXHAUST PIPE AND MUFFLER .................................5-9
REMOVING THE CAMSHAFT .................................................................5-13
CHECKING THE CAMSHAFT ..................................................................5-14
CHECKING THE TIMING CHAIN AND CAMSHAFT SPROCKET...........5-15
CHECKING THE TIMING CHAIN TENSIONERS ....................................5-15
CHECKING THE DECOMPRESSION SYSTEM ......................................5-16
INSTALLING THE CAMSHAFTS .............................................................5-16
...........................................................................................5-18
REMOVING THE CYLINDER HEAD ........................................................5-20
CHECKING THE TIMING CHAIN GUIDE (INTAKE SIDE).......................5-20
CHECKING THE CYLINDER HEAD ........................................................5-20
INSTALLING THE CYLINDER HEAD ......................................................5-21
...................................................................5-22
REMOVING THE VALVES .......................................................................5-23
CHECKING THE VALVES AND VALVE GUIDES....................................5-24
CHECKING THE VALVE SEATS .............................................................5-25
CHECKING THE VALVE SPRINGS .........................................................5-27
CHECKING THE VALVE LIFTERS ..........................................................5-27
INSTALLING THE VALVES......................................................................5-27
...............................................................................5-29
REMOVING THE PISTON........................................................................5-30
CHECKING THE CYLINDER AND PISTON ............................................5-30
CHECKING THE PISTON RINGS ............................................................5-31
CHECKING THE PISTON PIN .................................................................5-31
INSTALLING THE PISTON AND CYLINDER ..........................................5-32
....................................................................................5-34
CHECKING THE STARTER MOTOR ......................................................5-36
ASSEMBLING THE STARTER MOTOR ..................................................5-37
Summary of Contents for YZ 2018 Series
Page 6: ...EASB916006 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY...
Page 10: ......
Page 40: ...MOTORCYCLE CARE AND STORAGE 1 28...
Page 64: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 23...
Page 66: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25...
Page 68: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27...
Page 70: ...CABLE ROUTING DIAGRAM 2 29 EASB29B065 CABLE ROUTING DIAGRAM...
Page 72: ...CABLE ROUTING DIAGRAM 2 31...
Page 74: ...CABLE ROUTING DIAGRAM 2 33...
Page 76: ...CABLE ROUTING DIAGRAM 2 35...
Page 78: ...CABLE ROUTING DIAGRAM 2 37...
Page 80: ...CABLE ROUTING DIAGRAM 2 39...
Page 82: ...CABLE ROUTING DIAGRAM 2 41...
Page 84: ...CABLE ROUTING DIAGRAM 2 43...
Page 255: ...OIL PUMP AND BALANCER GEAR 5 58 a 2 10 b 2 9 1 b 5 3 a 4 10 5 9 3 E c d 6 7 8 8 b 6...
Page 276: ...TRANSMISSION 5 79...
Page 290: ...FUEL TANK 7 5 A Left B Right 1 1 A 0 mm 0 in B 1 1 15 mm 0 59 in...
Page 296: ...THROTTLE BODY 7 11...
Page 299: ......
Page 313: ...CHARGING SYSTEM 8 14...
Page 321: ...COOLING SYSTEM For JPN 8 22...
Page 351: ...FUEL PUMP SYSTEM 8 52 EASB29B345...
Page 352: ...ELECTRICAL COMPONENTS 8 53 ELECTRICAL COMPONENTS EASB29B346 9 10 11 1 3 2 4 5 6 7 8...
Page 354: ...ELECTRICAL COMPONENTS 8 55 11 10 9 2 3 1 6 7 8 4 5...
Page 356: ...ELECTRICAL COMPONENTS 8 57 EASB29B347 CHECKING THE SWITCHES 4 1 3 2 B B Sb B B B B B B B B...
Page 372: ...ELECTRICAL COMPONENTS 8 73 c Measure the fuel injector resistance...