Yamaha YZ250 Owner's Service Manual page 428

FRONT FORK
Base valve
1. Remove:
9 Base valve 1
From damper assembly 2.
NOTE:
Hold the damper assembly with the cap bolt ring
wrench 3 and use the cap bolt wrench 4 to
remove the base valve.
Cap bolt wrench:
YM-01500/90890-01500
Cap bolt ring wrench:
YM-01501/90890-01501
EC554000
INSPECTION
EC554100
Damper assembly
1. Inspect:
9 Damper assembly 1
Bend/Damage¡Replace.
9 O-ring 2
Wear/Damage¡Replace.
cC
The front fork with a built-in piston rod has
a very sophisticated internal construction
and is particularly sensitive to foreign ma-
terial.
Use enough care not to allow any foreign
material to come in when the oil is re-
placed or when the front fork is disassem-
bled and reassembled.
5-30
CHAS