Checking The Tires; Checking And Tightening The Spokes; Checking The Wheels; Checking The Wheel Bearings - Yamaha WR450FN 2022 Owner's Service Manual

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CHECKING THE TIRES

1. Measure:
• Tire pressure
Out of specification  Regulate.
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)
TIP
• Check the tire while it is cold.
• Because if the bead stopper tightening nut is
loose when the tire pressure is low, the tire
could slip off the rim, thus be sure to check and
tighten the bead stopper tightening nut "a".
• If the tire valve stem "b" is found tilted, the tire
is considered to be slipping off its position. Cor-
rect the tire position.
a
a. Bead stopper tightening nut
b. Tire valve stem
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CHECKING AND TIGHTENING THE SPOKES

1. Check:
• Spoke
Bend/damage  Replace.
Loose  Tighten.
Tap the spokes with a screwdriver.
TIP
A tight spoke will emit a clear, ringing tone; a
loose spoke will sound flat.
2. Tighten:
• Spoke
(with a spoke nipple wrench "1")
1
TIP
• Do not give a half turn (180) or more for one
b
tightening.
• Make sure that tightening after a break-in is
done until the initial looseness in nipples disap-
pears.
• Make sure that tightening is done in stages, not
at a time.
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CHECKING THE WHEELS

1. Check:
• Wheel
Damage/out-of-round  Replace.
EWA13260
WARNING
Never attempt to make any repairs to the
wheel.
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CHECKING THE WHEEL BEARINGS

1. Check:
• Wheel bearing
Refer to "CHECKING THE FRONT WHEEL"
on page 4-8 and "CHECKING THE REAR
WHEEL" on page 4-13.
3-33
CHASSIS
Spoke nipple wrench (6–7)
90890-01521
Spoke nipple wrench (6–7)
YM-01521
Spoke
2.5 N·m (0.25 kgf·m, 1.8 lb·ft)