FRONT WHEEL
4-4
EASB111122REMOVING 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
EASB111123CHECKING THE FRONT WHEEL
1. Check:
• Front wheel axle
Roll 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 wheel
Damage/wear Replace.
Refer to “CHECKING THE TIRES” on page
3-34 and “CHECKING THE WHEELS” on
page 3-34.
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 3-34.
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:
•Collars
Damage/wear Replace.
7. Check:
• Bearing
Front 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..
ab
CRANKSHAFT ASSEMBLY AND BALANCER SHAFT
5-70
EASB111283REMOVING THE BALANCER SHAFT
1. Remove:
• Balancer shaft “1”
TIP
Remove the balancer shaft with its flat side “a”
facing the crankshaft.
EASB111284REMOVING THE CRANKSHAFT ASSEMBLY
1. Remove:
• Crankshaft assembly “1”
TIP
Remove the crankshaft assembly by using the
crankcase separating tool “2”.
EASB111285
CHECKING THE CRANKSHAFT ASSEMBLY
1. Measure:
• Crankshaft runout
Out of specification Replace the crank-
shaft, bearing or both.
TIP
Turn the crankshaft slowly.
2. Measure:
• Big end side clearance “a”
Out of specification Replace the big end
bearing, crankshaft pin, or connecting rod.
3. Measure:
• Crank assembly width “a”
Out of specification Replace the crank-
shaft. Crankcase separating tool
90890-04152
YU-A9642
1
a
2
1
Runout limit
0.030 mm (0.0012 in)
Big end side clearance
0.150–0.450 mm (0.0059–0.0177
in)
Crank assembly width
61.95–62.00 mm (2.439–2.441 in)
CHASSIS
10-2
EASB111369TIRE PRESSURE
Tire pressure should be adjusted to suit the
road surface condition of the circuit.
• Under a rainy, a muddy, a sandy, or a slippery
condition, the tire pressure should be lower
for a larger area of contact with the road sur-
face.
• Under a stony or a hard road condition, the
tire pressure should be higher to prevent a flat
tire.
EASB111370FRONT FORK SETTING
The front fork setting should be made depend-
ing on the rider’s feeling 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.
EASB111371CHANGE IN AMOUNT AND CHARACTERIS-
TICS OF FORK OIL
Damping characteristic near the final stroke
can be changed by changing the fork oil
amount.
EWA1DX4001
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. Standard tire pressure
100 kPa (1.00 kgf/cm
2,15 psi)
Extent of adjustment
60–80 kPa (0.60–0.80 kgf/cm
2,
9–12 psi)
Extent of adjustment
100–120 kPa (1.00–1.20 kgf/cm
2,
15–18 psi)
Standard oil amount
315 cm3 (10.65 US oz, 11.11
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
