Yamaha YZ250 2021, Owner'S Manual

Page: 93 / 148

FRONT FORK
4-21
(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,
correct damping force cannot be obtained.
28.Tighten:
• Adjuster (damper assembly) “1”
TIP
Hold the locknut “2” and tighten the adjuster.
29.Install:
• Adjuster “1”
(to the inner tube)
30.Fill:
• Front fork leg
NOTICE
ECA24570
• Be sure to use the recommended oil. Other
oils may have an adverse effect on front
fork performance.
• When disassembling and assembling the
front fork leg, do not allow any foreign ma-
terial to enter the front fork.
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)
Adjuster (damper assembly)
29 N·m (2.9 kgf·m, 21 lb·ft)
1
2
a
T
R
.
.
Inner tube and adjuster
55 N·m (5.5 kgf·m, 41 lb·ft)
LOCTITE®
Recommended oil
Yamaha Suspension Oil S1
Standard oil amount
320 cm³ (10.8 US oz, 11.3 Imp.oz)
Extent of adjustment
300–365 cm³ (10.1–12.3 US oz,
10.6–12.9 Imp.oz)
T
R
.
.
1