Yamaha YZ450FP 2023, Owner'S Service Manual, Page: 170 / 388

FRONT FORK
4-54
19.Install:
• Dust seal “1”
TIP
Apply lithium-soap-based grease on the inner
tube.
20.Check:
• Inner tube smooth movement
Tightness/binding/rough spots

Repeat the
steps (14) to (20).
21.Measure:
• Distance “a”
Out of specification

Turn the locknut to
specification.
22.Install:
• Upper spring seat “1”
•
Fork spring “2”
(to the damper assembly “3”)
TIP
Install the upper spring seat with its larger dia.
end “a” facing the fork spring.
23.Install:
• Damper assembly “1”
(to the inner tube “2”)
NOTICE
ECA24560
Allow the damper assembly to slide slowly
down the inner tube until it contacts the bot-
tom of the inner tube. Be careful not to dam-
age the inner tube.
24.Loosen:
• Rebound damping force adjuster “1”
TIP
•
Before loosening the damping force adjuster,
record the setting position.
Distance “a”
16 mm (0.63 in) or more
Between the damper assembly
“1” bottom and locknut “2” bot-
tom.
Ne w
1
2
a
1 2
3
a
1
2