Yamaha YZ450FX 2023, Owner'S Manual

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TIGHTENING TORQUES
2-11
EAM30204
CHASSIS TIGHTENING TORQUES
TIP
 - marked portion shall be checked for torque tightening after break-in or before each race.
Item
Thread
size
Q’ty Tightening torques Remarks
Upper bracket pinch bolt M8 4 21 N·m (2.1 kgf·m, 15 lb·ft) 
Lower bracket pinch bolt M8 4 21 N·m (2.1 kgf·m, 15 lb·ft) 
Steering stem nut M24 1 145 N·m (14.5 kgf·m, 107 lb·ft) 
Upper handlebar holder bolt M8 4 28 N·m (2.8 kgf·m, 21 lb·ft) 
Lower handlebar holder nut M10 2 40 N·m (4.0 kgf·m, 30 lb·ft) 
Engine stop switch screw M3 1 0.5 N·m (0.05 kgf·m, 0.37 lb·ft)
Start switch M3 1 0.5 N·m (0.05 kgf·m, 0.37 lb·ft)
Mode switch M3 1 1.3 N·m (0.13 kgf·m, 0.95 lb·ft)
Lower ring nut M28 1 See TIP. 
Damper assembly (front fork) M51 2 30 N·m (3.0 kgf·m, 22 lb·ft)
Inner tube and adjuster M22 2 55 N·m (5.5 kgf·m, 41 lb·ft)
Base valve (front fork) M42 2 28 N·m (2.8 kgf·m, 21 lb·ft)
Adjuster (damper assembly) M12 2 29 N·m (2.9 kgf·m, 21 lb·ft)
Bleed screw (front fork) M5 2 1.3 N·m (0.13 kgf·m, 0.95 lb·ft)
Front fork protector bolt M6 6 5 N·m (0.5 kgf·m, 3.7 lb·ft) 
Brake hose holder bolt M6 2 9 N·m (0.9 kgf·m, 6.6 lb·ft) 
Throttle grip cap screw M5 2 3.8 N·m (0.38 kgf·m, 2.8 lb·ft)
Clutch lever holder bolt M6 2 5 N·m (0.5 kgf·m, 3.7 lb·ft)
Clutch lever nut M6 1 4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
Clutch lever position locknut M5 1 4.8 N·m (0.48 kgf·m, 3.5 lb·ft)
Front brake master cylinder holder
bolt
M6 2 9 N·m (0.9 kgf·m, 6.6 lb·ft) 
Front brake master cylinder reservoir
cap screw
M4 2 1.5 N·m (0.15 kgf·m, 1.1 lb·ft)
Front brake lever pivot bolt M6 1 6 N·m (0.6 kgf·m, 4.4 lb·ft)
Front brake lever pivot nut M6 1 6 N·m (0.6 kgf·m, 4.4 lb·ft)
Locknut (front brake lever position) M6 1 5 N·m (0.5 kgf·m, 3.7 lb·ft)
Front brake hose holder bolt M6 1 9 N·m (0.9 kgf·m, 6.6 lb·ft) 
Front brake hose union bolt M10 2 30 N·m (3.0 kgf·m, 22 lb·ft) 
Front brake caliper bolt M8 2 28 N·m (2.8 kgf·m, 21 lb·ft) 
Front brake pad pin M10 1 17 N·m (1.7 kgf·m, 13 lb·ft)
Front brake pad pin plug M10 1 2.5 N·m (0.25 kgf·m, 1.8 lb·ft)
Front brake caliper bleed screw M8 1 5 N·m (0.5 kgf·m, 3.7 lb·ft) 
Front wheel axle nut M18 1 115 N·m (11.5 kgf·m, 85 lb·ft) 
LT