2016 YAMAHA WR 450F flat tire

CHASSIS
3-36
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Compression damping (for slow compres-
sion damping)
ECA
NOTICE
Do not turn the adjuster forcibly beyond its
adjusting range.
1. Adjust:• Compression damping (for slow compres-
sion damping)
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a. Turn the adjuster “1” in the direction of “a” or “b” to make an adjustment.
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EAS2GC1119CHECKING THE TIRES
1. Measure:
• Tire pressureOut of specification  Regulate.
TIP
• Check the tire while it is cold.
• Loose bead stoppers allow the tire to slip off
its position on the rim when the tire pressure
is low.
• If the tire valve stem is found tilted, the tire is
considered to be slipping off its position. Cor-
rect the tire position.
EAS2GC1120CHECKING AND TIGHTENING THE
SPOKES
1. Check:• SpokesBend/damage  Replace.
Loose  Tighten.
TIP
A tight spoke will emit a clear, ringing tone; a
loose spoke will sound flat.
Direction “a”
Compression damping is increased
(suspension is harder).
Direction “b” Compression damping is decreased
(suspension is softer).
Compression damping setting
(for slow compression damping)MaximumFully turned in
Standard 10 clicks out*
Minimum 20 clicks out*
* With the adjuster fully turned in
1 a
b
1
ba
Tire air pressure (measured on cold
tires)
Front 100 kPa (1.00 kgf/cm
2, 15 psi)
Rear 100 kPa (1.00 kgf/cm
2, 15 psi)

CHASSIS
4-2
• Under a stony or a hard road condition, the tire pressure should be hi gher to prevent a flat
tire.
EAS2GC1140FRONT FORK SETTING
The front fork setting should be made depend-
ing on the rider’s feeli ng of an actual run and
the circuit conditions.
The front fork setting includes the following
three factors:
1. Setting of air spring characteristics • Change the fork oil amount.
2. Setting of spring preload • Change the spring.
3. Setting of damping force
• Change the compression damping force.
• Change the rebound damping force.The spring acts on the load and the damping
force acts on the cushion travel speed.
EAS2GC1141CHANGE IN AMOUNT AND CHARACTERIS-
TICS OF FORK OIL
Damping characteristic near the final stroke
can be changed by changing the fork oil
amount.
EWA
WARNING
Adjust the oil amount in 5 cm3 (0.2 US oz,
0.2 Imp.oz) increments or decrements. Too
small oil amount causes the front fork to
produce a noise at full rebound or the rider
to feel some pressure on his hands or body.
Alternatively, too large oil amount will
cause the air spring characteristics to have
a tendency to be stiffer with the consequent
deteriorated performance and characteris-
tics. Therefore, adjust the front fork within
the specified range.
EAS2GC1142SETTING OF SPRING AFTER REPLACE-
MENT
As the front fork setting can be easily affected
by the rear suspension, take care so that the
front and the rear are balanced (in position etc.)
when setting the front fork.
1. Use of soft spring
• Change the rebound damping force.Turn out one or two clicks.
• Change the compression damping force.
Turn in one or two clicks.
TIP
Generally a soft spring gives a soft riding feel-
ing. Rebound damping tends to become stron-
ger and the front fork may sink deeply over a
series of gaps.
2. Use of stiff spring• Change the rebound damping force.
Turn in one or two clicks.
• Change the compression damping force. Turn out one or two clicks.
Extent of adjustment
100–120 kPa (1.00–1.20 kgf/cm
2,
15–18 psi)
Standard oil amount 345 cm
3 (11.66 US oz, 12.14
lmp.oz)
Extent of adjustment 300–365 cm
3 (10.14–12.34 US
oz, 10.58–12.87 Imp.oz)
A. Air spring characteristics in relation to oil amount change
B. Load
C. Stroke
1. Max. oil amount
2. Standard oil amount
3. Min. oil amount

FRONT WHEEL
5-5
EAS2GC1155REMOVING THE FRONT WHEEL
1. Use a suitable stand to raise the front wheel off the ground.
EWA
WARNING
Securely support the vehicle so that there is
no danger of it falling over.
2. Remove:• Front wheel
EAS2GC1156CHECKING THE FRONT WHEEL
1. Check:• Front wheel axleRoll the front wheel axle on a flat surface.
Bends  Replace.
EWA
WARNING
Do not attempt to straighten a bent wheel
axle.
2. Check:
•Tire(s)
• Front wheelDamage/wear  Replace.
Refer to “CHECKING THE TIRES” on page
3-36 and “CHECKING THE WHEELS” on
page 3-37.
3. Check: • Spokes
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.
4. Tighten: • Spokes
Refer to “CHECKING AND TIGHTENING
THE SPOKES” on page 3-36.
TIP
After tightening the spokes, measure the wheel
runout.
5. Measure:• Wheel radial runout “a”
• Wheel lateral runout “b”Out of specification  Repair/replace.
6. Check: •CollarsDamage/wear  Replace.
7. Check: • BearingFront wheel turns roughly or is loose  Re-
place the wheel bearings.
• Oil seals Damage/wear  Replace.
Spokes
2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
Radial wheel runout limit 2.0 mm (0.08 in)
Lateral wheel runout limit 2.0 mm (0.08 in)
T R..
a b