ENGINE SPECIFICATIONS
2-4
End gap limit
0.50 mm (0.0197 in)
Ring side clearance
0.030–0.065 mm (0.0012–0.0026 in)
Side clearance limit
0.115 mm (0.0045 in)
Crankshaft
Crank assembly width
55.93–56.00 mm (2.202–2.205 in)
Runout limit
0.030 mm (0.0012 in)
Clutch
Clutch type
Wet, multiple-disc
Clutch lever free play
7.0–12.0 mm (0.28–0.47 in)
Friction plate 1 thickness
2.90–3.10 mm (0.114–0.122 in)
Wear limit
2.85 mm (0.112 in)
Plate quantity
4 pcs
Friction plate 2 thickness
2.90–3.10 mm (0.114–0.122 in)
Wear limit
2.85 mm (0.112 in)
Plate quantity
5 pcs
Clutch plate thickness
1.10–1.30 mm (0.043–0.051 in)
Plate quantity
8 pcs
Warpage limit
0.10 mm (0.004 in)
Clutch spring free length
47.80 mm (1.88 in)
Limit
45.41 mm (1.79 in)
Push rod bending limit
0.30 mm (0.012 in)
Drivetrain
Primary reduction ratio
3.353 (57/17)
Transmission type
Constant mesh 6-speed
Gear ratio
1st
2.385
(31/13)
2nd
1.813
(29/16)
3rd
1.444
(26/18)
4th
1.143
(24/21)
5th
0.957
(22/23)
6th
0.815
(22/27)
Main axle runout limit
0.08 mm (0.0032 in)
Drive axle runout limit
0.08 mm (0.0032 in)
Secondary reduction ratio
3.923 (51/13)
Final
drive
Chain
Air filter
Air filter element
Wet element
Air filter oil grade
Yamaha foam air filter oil or other quality foam
air filter oil
Fuel pump
Pump
type
Electrical
Maximum consumption amperage
2.4 A
Fuel injector
Resistance
12.0
Throttle body
ID mark
30RA-A62U(B291 00)
Idling condition
Engine idling speed
1900–2100 r/min
Coolant
temperature
70–90
C (158–194
F)
Summary of Contents for YZ 2019 Series
Page 6: ...EAM20162 YAMAHA MOTOR CORPORATION U S A YZ MOTORCYCLE LIMITED WARRANTY...
Page 10: ......
Page 40: ...MOTORCYCLE CARE AND STORAGE 1 28...
Page 63: ...LUBRICATION POINTS AND LUBRICANT TYPES 2 22...
Page 66: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 25...
Page 68: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 27...
Page 70: ...LUBRICATION SYSTEM CHART AND DIAGRAMS 2 29...
Page 72: ...CABLE ROUTING DIAGRAM 2 31 EAM20152 CABLE ROUTING DIAGRAM...
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 86: ...CABLE ROUTING DIAGRAM 2 45...
Page 126: ...ELECTRICAL SYSTEM 3 38...
Page 177: ...FRONT FORK 4 49 1...
Page 196: ...CHAIN DRIVE 4 68...
Page 217: ...CAMSHAFT 5 18 Spark plug Spark plug 13 N m 1 3 kgf m 9 6 lb ft T R...
Page 237: ...ELECTRIC STARTER 5 38...
Page 256: ...OIL PUMP AND BALANCER GEAR 5 57 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 262: ...GENERATOR AND STARTER CLUTCH 5 63 1 a 3 3 2 4...
Page 276: ...TRANSMISSION 5 77...
Page 284: ...WATER PUMP 6 7...
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 343: ...FUEL INJECTION SYSTEM 8 44...
Page 347: ...FUEL PUMP SYSTEM 8 48...
Page 348: ...ELECTRICAL COMPONENTS 8 49 EAM20147 ELECTRICAL COMPONENTS 9 10 1 3 2 4 5 6 7 8...
Page 350: ...ELECTRICAL COMPONENTS 8 51 11 10 9 2 3 1 6 7 8 4 5...
Page 352: ...ELECTRICAL COMPONENTS 8 53 EAM30289 CHECKING THE SWITCHES 4 1 3 2 B B Sb B B B B B B B B...
Page 368: ...ELECTRICAL COMPONENTS 8 69...
Page 376: ...LIST OF SELF DIAGNOSTIC AND FAIL SAFE ACTIONS 9 7...