2014 YAMAHA YZ450F wheel size
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CHASSIS SPECIFICATIONS
2-8
EAS1SL1054
CHASSIS SPECIFICATIONS
Chassis
Frame type Semi double cradle
Caster angle 27.08 ° (USA) (CAN)
27.50 ° (EUR)
27.67 ° (JPN)
27.58 ° (AUS) (NZL) (ZAF)
Trail 120 mm (4.7 in) (USA) (CAN)
122 mm (4.8 in) (EUR)
124 mm (4.9 in) (JPN) (AUS) (NZL) (ZAF)
Front wheel
Wheel type Spoke wheel
Rim size 21 1.60
Rim material Aluminum
Wheel travel 310.0 mm (12.20 in)
Radial wheel runout limit 2.0 mm (0.08 in)
Lateral wheel runout limit 2.0 mm (0.08 in)
Wheel axle bending limit 0.50 mm (0.02 in)
Rear wheel
Wheel type Spoke wheel
Rim size 19 2.15
Rim material Aluminum
Wheel travel 315.0 mm (12.40 in)
Radial wheel runout limit 2.0 mm (0.08 in)
Lateral wheel runout limit 2.0 mm (0.08 in)
Wheel axle bending limit 0.50 mm (0.02 in)
Front tire
Type With tube
Size 80/100-21 51M
Manufacturer/model DUNLOP/MX51FA (USA) (CAN)
PIRELLI/MID SOFT 32 (EUR)
BRIDGESTONE/M601 (JPN)
DUNLOP/MX51FA (AUS) (NZL) (ZAF)
Rear tire
Type With tube
Size 120/80-19 63M (USA) (CAN)
110/90-19 62M (EUR) (JPN)
120/80-19 63M (AUS) (NZL) (ZAF)
Manufacturer/model DUNLOP/MX51 (USA) (CAN)
PIRELLI/MID SOFT 32 (EUR)
BRIDGESTONE/M602 (JPN)
DUNLOP/MX51 (AUS) (NZL) (ZAF)
Tire air pressure (measured on cold tires)
Front 100 kPa (1.00 kgf/cm2, 15 psi)
Rear 100 kPa (1.00 kgf/cm2, 15 psi)
Front brake
Type Single disc brake
Operation Right hand operation
Front disc brake
Disc outside diameter thickness 250.0 3.0 mm (9.84 0.12 in)
Page 58 of 360
TIGHTENING TORQUES
2-15
Air filter boltM6 1 2.0 Nm (0.20 m·kgf, 1.4 ft·lbf)
Air filter case cover bolt M6 3 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Air filter guide holder screw M5 8 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Air filter case cap screw M5 1 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Starter knob/Idle screw M12 1 2.1 Nm (0.21 m·kgf, 1.5 ft·lbf)
Throttle cable nut (pull) M10 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Throttle cable nut (return) M10 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Clutch cable adjuster and locknut M6 1 4.3 Nm (0.43 m·kgf, 3.1 ft·lbf)
Clutch cable locknut (engine side) M8 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Exhaust pipe nut M6 3See TIP.
*2
Exhaust pipe protector screw M6 4 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Exhaust pipe bracket bolt M8 1 20 Nm (2.0 m·kgf, 14 ft·lbf)
Frame and silencer bolt (front) M8 1 30 Nm (3.0 m·kgf, 22 ft·lbf)
Frame and silencer bolt (rear) M 8 1 30 Nm (3.0 m·kgf, 22 ft·lbf)
Exhaust pipe clamp bolt M8 2 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Silencer body bolt M5 6 8 Nm (0.8 m·kgf, 5.8 ft·lbf)
Oil nozzle bolt M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Engine oil drain bolt M10 1 20 Nm (2.0 m·kgf, 14 ft·lbf)
Crankcase bolt M6 12 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Clutch cable holder bolt M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Crankshaft end accessing screw M36 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Timing mark accessing screw M14 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Drive chain sprocket cover bolt M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Crankcase bearing cover plate
screw M6 8 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Crankcase bearing cover plate
screw (crankshaft) M8 4 18 Nm (1.8 m·kgf, 13 ft·lbf) Crimp.
Clutch cover bolt M6 7 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Oil level check window bolt M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Left crankcase cover bolt M6 7 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Right crankcase cover bolt M6 11 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Oil filter element cover bolt M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Oil level check window bolt M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Kick shaft ratchet wheel guide bolt M6 2 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Kick starter lever bolt M8 1 33 Nm (3.3 m·kgf, 24 ft·lbf)
Kick starter lever boss screw M6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Primary drive gear nut M20 1 100 Nm (10 m·kgf, 72 ft·lbf)
Clutch spring bolt M6 6 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Clutch boss nut M20 1 75 Nm (7.5 m·kgf, 54 ft·lbf)
ITEM
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size Q’ty TIGHTENING TORQUES RemarksLT
LT
LT
LT
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Page 61 of 360
TIGHTENING TORQUES
2-18
CHASSIS TIGHTENING TORQUES
TIP
- marked portion shall be checked for torque tightening after break-in or before each race.
ITEMThread
sizeQ’tyTIGHTENING TORQUESRemarks
Outer tube and upper bracket boltM8421 Nm (2.1 m·kgf, 15 ft·lbf)
Outer tube and lower bracket boltM8421 Nm (2.1 m·kgf, 15 ft·lbf)
Upper bracket and steering stem nutM241145 Nm (14.5 m·kgf, 105 ft·lbf)
Upper handlebar holder boltM8428 Nm (2.8 m·kgf, 20 ft·lbf)
Lower handlebar holder nutM10240 Nm (4.0 m·kgf, 29 ft·lbf)
Engine stop switch screwM310.5 Nm (0.05 m·kgf, 0.36 ft·lbf)
Lower ring nutM281See TIP.
Outer tube and damper assemblyM51230 Nm (3.0 m·kgf, 22 ft·lbf)
Inner tube and adjusterM22255 Nm (5.5 m·kgf, 40 ft·lbf)
Damper assembly and base valveM42228 Nm (2.8 m·kgf, 20 ft·lbf)
Damper assembly adjusterM12229 Nm (2.9 m·kgf, 21 ft·lbf)
Bleed screw (front fork) and base
valveM521.3 Nm (0.13 m·kgf, 0.94 ft·lbf)
Front fork protector boltM665 Nm (0.5 m·kgf, 3.6 ft·lbf)
Front fork protector and brake hose
holder boltM629 Nm (0.9 m·kgf, 6.5 ft·lbf)
Throttle grip cap screwM523.8 Nm (0.38 m·kgf, 2.8 ft·lbf)
Clutch lever holder boltM625 Nm (0.5 m·kgf, 3.6 ft·lbf)
Clutch lever nutM614.0 Nm (0.40 m·kgf, 2.9 ft·lbf)
Clutch lever position locknutM514.8 Nm (0.48 m·kgf, 3.5 ft·lbf)
Front brake master cylinder holder
boltM629 Nm (0.9 m·kgf, 6.5 ft·lbf)
Front brake master cylinder reser-
voir cap screwM421.5 Nm (0.15 m·kgf, 1.1 ft·lbf)
Front brake lever pivot boltM616 Nm (0.6 m·kgf, 4.3 ft·lbf)
Front brake lever pivot nutM616 Nm (0.6 m·kgf, 4.3 ft·lbf)
Front brake lever position locknutM615 Nm (0.5 m·kgf, 3.6 ft·lbf)
Front brake hose holder and lower
bracket boltM619 Nm (0.9 m·kgf, 6.5 ft·lbf)
Front brake hose union boltM10230 Nm (3.0 m·kgf, 22 ft·lbf)
Front brake caliper boltM8228 Nm (2.8 m·kgf, 20 ft·lbf)
Front brake pad pinM10117 Nm (1.7 m·kgf, 12 ft·lbf)
Front brake pad pin plugM1012.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Front brake caliper bleed screwM816 Nm (0.6 m·kgf, 4.3 ft·lbf)
Front wheel axle nutM181115 Nm (11.5 m·kgf, 83 ft·lbf)
Front wheel axle pinch boltM8421 Nm (2.1 m·kgf, 15 ft·lbf)
Front brake disc boltM6612 Nm (1.2 m·kgf, 8.7 ft·lbf)
LT
LT
Page 62 of 360
TIGHTENING TORQUES
2-19
Rear brake disc boltM6 6 14 Nm (1.4 m·kgf, 10 ft·lbf)
Footrest bracket bolt M10 4 55 Nm (5.5 m·kgf, 40 ft·lbf)
Rear brake pedal bolt M8 1 26 Nm (2.6 m·kgf, 19 ft·lbf)
Rear brake pedal position locknut M6 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Rear brake master cylinder bolt M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Rear brake master cylinder reservoir
cap bolt M4 2 1.5 Nm (0.15 m·kgf, 1.1 ft·lbf)
Rear brake hose union bolt M10 2 30 Nm (3.0 m·kgf, 22 ft·lbf)
Rear brake caliper bleed screw M8 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
Rear brake pad pin M10 1 17 Nm (1.7 m·kgf, 12 ft·lbf)
Rear brake pad pin plug M10 1 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Rear wheel axle nut M22 1 135 Nm (13.5 m·kgf, 98 ft·lbf)
Drive chain puller adjust bolt and
locknut M8 2 21 Nm (2.1 m·kgf, 15 ft·lbf)
Rear wheel sprocket nut M8 6 42 Nm (4.2 m·kgf, 30 ft·lbf)
Nipple (spoke) — 72 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Rear brake disc cover bolt M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
Rear brake caliper protector bolt M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Engine mounting bolt (upper side) M10 2 45 Nm (4.5 m·kgf, 33 ft·lbf)
Engine mounting bolt (front side) M 10 1 59 Nm (5.9 m·kgf, 43 ft·lbf)
Engine mounting bolt (lower side) M 10 1 53 Nm (5.3 m·kgf, 38 ft·lbf)
Engine bracket bolt (upper side) M8 4 34 Nm (3.4 m·kgf, 25 ft·lbf)
Engine bracket bolt (front side) M8 4 34 Nm (3.4 m·kgf, 25 ft·lbf)
Rear frame and frame bolt M8 4 32 Nm (3.2 m·kgf, 23 ft·lbf)
Engine guard bolt (right side) M6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Pivot shaft and nut M16 1 85 Nm (8.5 m·kgf, 61 ft·lbf)
Rear shock absorber assembly up-
per bolt M10 1 56 Nm (5.6 m·kgf, 41 ft·lbf)
Rear shock absorber assembly low-
er bolt M10 1 53 Nm (5.3 m·kgf, 38 ft·lbf)
Rear shock absorber locknut M60 1 30 Nm (3.0 m·kgf, 22 ft·lbf)
Relay arm bolt (swingarm side) M14 1 70 Nm (7.0 m·kgf, 51 ft·lbf)
Connecting arm bolt (relay arm side) M14 1 80 Nm (8.0 m·kgf, 58 ft·lbf)
Connecting arm bolt (frame side) M14 1 80 Nm (8.0 m·kgf, 58 ft·lbf)
Swingarm and brake hose holder
screw M5 4 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
Drive chain tensioner bolt (upper
side) M8 1 16 Nm (1.6 m·kgf, 12 ft·lbf)
Drive chain tensioner bolt (lower
side) M8 1 16 Nm (1.6 m·kgf, 12 ft·lbf)
Drive chain support bolt M6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
ITEM
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size Q’ty TIGHTENING TORQUES RemarksLT
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