Yamaha YZ450FN 2022, Owner'S Service Manual, Page: 165 / 366

FRONT FORK
4-51
23.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.
24.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.
25.Loosen:
• Rebound damping force adjuster “1”
TIP
•
Before loosening the damping force adjuster,
record the setting position.
•
Unless the damping force adjuster is fully loos-
ened, correct damping characteristic cannot be
obtained after installation.
26.Install:
• Damper adjusting rod “1”
•
Copper washer “2”
• Adjuster “3”
(to the damper assembly “4”)
TIP
• While compressing the inner tube “5”, set the
cap bolt ring wrench “7” between the inner tube
and locknut “6”.
•
Fully finger tighten the adjuster onto the damp-
er assembly.
27.Measure:
• Gap “a” between the adjuster “1” and the
locknut “2”
Out of specification

Retighten and readjust
the locknut.
TIP
If it is installed with a gap out of specification,
1
2
a
1 2
3
a
1
2
Cap bolt ring wrench
90890-01501
Cap bolt ring wrench
YM-01501
Gap “a” between the adjuster and
the locknut
0.5–1.0 mm (0.02–0.04 in)
1
Ne w