Yamaha YZ 2018 Series, Owner'S Service Manual, Page: 173 / 402

FRONT FORK
4-47
23.Install:
• Collar “1”
• Fork spring “2”
(to the damper assembly “3”)
TIP
Install the collar with its larger dia. end “a” fac-
ing the fork spring.
24.Install:
• Damper assembly “1”
(to the inner tube “2”)
ECA
NOTICE
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
loosened, correct damping characteristic can-
not 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
damper assembly.
27.Measure:
• Gap “a” between the adjuster “1” and the
locknut “2”
Out of specification

Retighten and read-
just the locknut.
TIP
If it is installed with a gap out of specification,
correct damping force cannot be obtained.
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
New