Checking The Tires; Checking And Tightening The Spokes - Yamaha YZ450FX 2019 Owner's Service Manual

Fast compression damping
Minimum (soft)
2 turn(s) in direction "b"*
Standard
1-1/2 turn(s) in direction "b"*
Maximum (hard)
0 turn(s) in direction "b"*
* With the adjusting screw fully turned in di-
rection "a"
b b
1 1
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Compression damping (for slow compres-
sion damping)
ECA24390
NOTICE
Do not turn the adjuster forcibly beyond its
adjusting range.
1. Adjust:
• Compression damping (for slow compression
damping)
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a. Turn the adjuster "1" in the direction of "a" or
"b" to make an adjustment.
Direction "a"
Compression damping is increased
(suspension is harder).
Direction "b"
Compression damping is decreased
(suspension is softer).
Slow compression damping
Minimum (soft)
20 click(s) in direction "b"*
Standard
12 click(s) in direction "b"*
Maximum (hard)
0 click(s) in direction "b"*
* With the adjusting screw fully turned in di-
rection "a"
a a
3-32
b b
1 1
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EAM30243

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.
• 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.
EAM30244

CHECKING AND TIGHTENING THE SPOKES

1. Check:
• Spoke
Bend/damage  Replace.
Loose  Tighten.
CHASSIS
a a