engine YAMAHA YZ450F 2016 Owner's Manual

YAMAHA YZ450F 2016 Owner's Manual YZ450F 2016 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/53973/w960_53973-0.png YAMAHA YZ450F 2016 Owner's Manual

Page 45 of 362

YAMAHA YZ450F 2016 Owners Manual ENGINE SPECIFICATIONS
2-4
Valve spring
Free length (intake) 40.76 mm (1.60 in)
Limit 38.72 mm (1.52 in)
Free length (exhaust) 36.94 mm (1.45 in)
Limit 35.09 mm (1.38 in)
Installed length (intake) 34.7

Page 46 of 362

YAMAHA YZ450F 2016 Owners Manual ENGINE SPECIFICATIONS
2-5
Crankshaft
Crank assembly width 61.95–62.00 mm (2.439–2.441 in)
Runout limit 0.030 mm (0.0012 in)
Big end side clearance 0.150–0.450 mm (0.0059–0.0177 in)
Balancer
Ba

Page 47 of 362

YAMAHA YZ450F 2016 Owners Manual ENGINE SPECIFICATIONS
2-6
Throttle body
Type/quantity 30RA-JX1A/1
ID mark 1SL5 10
Fuel line pressure at idling 324.0 kPa (3.24 kgf/cm
2, 47.0 psi)
Throttle position sensor
Resistance 6.30 k
Output

Page 52 of 362

YAMAHA YZ450F 2016 Owners Manual ELECTRICAL SPECIFICATIONS
2-11
EASB111054
ELECTRICAL SPECIFICATIONS
Voltage
System voltage 12 V
Ignition system
Ignition system TCI
Advancer type Digital
Ignition timing (B.T.D.C.) 10.0 ° at 2000 r/m

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YAMAHA YZ450F 2016 Owners Manual TIGHTENING TORQUES
2-13
EASB111056ENGINE TIGHTENING TORQUES
TIP
- marked portion shall be checked for torque tightening after break-in or before each race.
ITEMThread 
sizeQ’ty TIGHTENING TORQUES Re

Page 55 of 362

YAMAHA YZ450F 2016 Owners Manual TIGHTENING TORQUES
2-14
Air filter joint clamp bolt
M4 1 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
Air filter case bolt M6 3 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Air filter bolt M6 1 2.0 Nm (0.20 m·kgf, 1.4 ft·lb

Page 58 of 362

YAMAHA YZ450F 2016 Owners Manual TIGHTENING TORQUES
2-17
EASB111057CHASSIS TIGHTENING TORQUES
TIP
- marked portion shall be checked for torque tightening after break-in or before each race.
ITEMThread 
sizeQ’ty TIGHTENING TORQUES R

Page 59 of 362

YAMAHA YZ450F 2016 Owners Manual TIGHTENING TORQUES
2-18
Front wheel axle pinch bolt M8 4 21 Nm (2.1 m·kgf, 15 ft·lbf)
Front brake disc bolt M6 6 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Rear brake disc bolt M6 6 14 Nm (1.4 m·kgf, 10 ft·l

Page 61 of 362

YAMAHA YZ450F 2016 Owners Manual LUBRICATION POINTS AND LUBRICANT TYPES
2-20
EASB111058
LUBRICATION POINTS AND LUBRICANT TYPES
EASB111059ENGINE
Lubrication point Lubricant types
Oil seal lips
Bearing
O-ring
Camshaft cap bolt threads

Page 73 of 362

YAMAHA YZ450F 2016 Owners Manual CABLE ROUTING DIAGRAM
2-32
1. Clutch cable
2. Throttle cable (return)
3. Throttle cable (pull)
4. Launch control switch lead
5. Engine stop switch lead
6. Cable holder
7. Coupler for connecting option