2012 YAMAHA YZ450F wheel

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Page 43 of 228

YAMAHA YZ450F 2012  Owners Manual 2-13
TIGHTENING TORQUES
CHASSIS
△- marked portion shall be checked for torque tightening after break-in or before each race.
ItemThread 
sizeQty Tightening torque Remarks
△Upper bracket and outer

Page 44 of 228

YAMAHA YZ450F 2012  Owners Manual 2-14
TIGHTENING TORQUES
△Brake pedal mounting M8  1 26 Nm (2.6 m•kg, 19 ft•lb)
Brake pedal position locknut M6  1 6 Nm (0.6 m•kg, 4.3 ft•lb)
△Rear brake master cylinder and frame M6  2 10

Page 60 of 228

YAMAHA YZ450F 2012  Owners Manual 3-4
MAINTENANCE INTERVALS
SWINGARM
Inspect, lube and retighten●●Molybdenum disulfide grease
RELAY ARM, CONNECTING 
ROD
Inspect, lube and retighten●●Molybdenum disulfide grease
STEERING HEAD
In

Page 61 of 228

YAMAHA YZ450F 2012  Owners Manual 3-5
PRE-OPERATION INSPECTION AND MAINTENANCE
PRE-OPERATION INSPECTION AND MAINTENANCE
Before riding for break-in operation, practice or a race, make sure the machine is in good operating condition.
Be

Page 72 of 228

YAMAHA YZ450F 2012  Owners Manual 3-16
CHASSIS
2. Replace:
• Brake pad
Brake pad replacement steps:
a. Remove the protector "1" and pad 
pin plug "2".
b. Loosen the pad pin "3".
c. Remove the rear wheel "4" and 
brake caliper "5".
R

Page 73 of 228

YAMAHA YZ450F 2012  Owners Manual 3-17
CHASSIS
a. Lower level
A. Front
B. Rear
CHECKING THE SPROCKET
1. Inspect:
• Sprocket teeth "a"
Excessive wear→Replace.
Replace the drive sprocket, rear 
wheel sprocket and drive chain as a 
s

Page 74 of 228

YAMAHA YZ450F 2012  Owners Manual 3-18
CHASSIS
c. Turn each adjuster exactly the 
same amount to maintain correct 
axle alignment. (There are marks 
"a" on each side of the drive chain 
puller alignment.) NOTICE: Im-
proper drive chai

Page 75 of 228

YAMAHA YZ450F 2012  Owners Manual 3-19
CHASSIS
Do not force the adjuster past the 
minimum or maximum extent of 
adjustment. The adjuster may be 
damaged.
Always adjust each front fork to 
the same setting. Uneven adjust-
ment can cau