Yamaha YZ 2019 Series, Owner'S Service Manual, Page: 169 / 398

FRONT FORK
4-41
terial to enter the front fork.
5. Check:
•
Base valve “1”
Wear/damage

Replace.
Contamination

Clean.
• O-ring “2”
Wear/damage

Replace.
• Base valve bushing “3”
Wear/damage

Replace.
• Spring “4”
Damage/fatigue

Replace the base valve.
• Air bleed screw “5”
Wear/damage

Replace.
6. Check:
• Contacting surface “a”
Wear/damage

Replace.
7. Check:
•
Adjuster “1”
• O-ring “2”
Wear/damage

Replace.
8. Check:
• Scraper “1”
Damage

Replace.
EAM30058
ASSEMBLING THE FRONT FORK LEGS
WARNING
EWA13660
• Make sure the oil levels in both front fork
legs are equal.
• Uneven oil levels can result in poor han-
dling and a loss of stability.
TIP
•
When assembling the front fork leg, be sure to
replace the following parts:
•
Inner tube bushing
• Outer tube bushing
•
Oil seals
•
Copper washers
•
Before assembling the front fork leg, make
sure that all of the components are clean.
1. Stretch the damper assembly fully.
2. Fill:
• Damper assembly
NOTICE
ECA24530
• Be sure to use the recommended oil. Other
2
1
New
New
New
2
2
1
5
4
3
a
New
Recommended oil
Yamaha Suspension Oil S1
Standard oil amount
206 cm³ (6.96 US oz, 7.27 Imp.oz)
New
1
2
1