Checking And Tightening The Spokes; Checking The Wheels; Checking The Wheel Bearings; Checking The Chassis Fasteners - Yamaha YZ450FN 2022 Owner's Service Manual

rect the tire position.
a
a. Bead stopper tightening nut
b. Tire valve stem
EAM30244

CHECKING AND TIGHTENING THE SPOKES

1. Check:
• Spoke
Bend/damage  Replace.
Loose  Tighten.
Tap the spoke 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
b
TIP
• Do not give a half turn (180) or more for one
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.
EAM30245

CHECKING THE WHEELS

1. Check:
• Wheel
Damage/out-of-round  Replace.
EWA13260
WARNING
Never attempt to make any repairs to the
wheel.
EAM30246

CHECKING THE WHEEL BEARINGS

1. Check:
• Wheel bearing
Refer to "CHECKING THE FRONT WHEEL"
on page 4-6 and "CHECKING THE REAR
WHEEL" on page 4-10.
EAM30253

CHECKING THE CHASSIS FASTENERS

Make sure that all nuts, bolts, and screws are
properly tightened.
Refer to "CHASSIS TIGHTENING TORQUES"
on page 2-13.
EAM30248
CHECKING AND LUBRICATING THE
CABLES
The following procedure applies to all of the in-
ner and outer cables.
EWA13270
WARNING
Damaged outer cable may cause the cable to
corrode and interfere with its movement. Re-
place damaged outer cable and inner cables
as soon as possible.
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)