Yamaha 2011 WR250FA Owner's Service Manual page 258

• Be sure to use recommended fork oil. If
other oils are used, they may have an ex-
cessively adverse effect on the front fork
performance.
• Never allow foreign materials to enter the
front fork.
16.After filling, pump the damper rod "1" slowly
up and down more than 10 times to distrib-
ute the fork oil.
17.Fill:
• Front fork oil
Until outer tube top surface with recom-
mended fork oil once more.
18.After filling, pump the outer tube "1" slowly
up and down (about 200 mm (7.9 in) stroke)
to distribute the fork oil once more.
Be careful not to excessive full stroke. A stroke
of 200 mm (7.9 in) or more will cause air to en-
ter. In this case, repeat the steps 15 to 18.
19.Wait ten minutes until the air bubbles have
been removed from the front fork, and the oil
has dispense evenly in system before set-
ting recommended oil level.
Fill with the fork oil up to the top end of the outer
tube, or the fork oil will not spread over to every
part of the front forks, thus making it impossible
to obtain the correct level.
Be sure to fill with the fork oil up to the top of the
outer tube and bleed the front forks.
20.Measure:
• Oil level (left and right) "a"
Out of specification → Adjust.
Standard oil level:
132 mm (5.20 in)
Extent of adjustment:
95–150 mm (3.74–5.91 in)
From top of outer tube with inner
tube and damper rod "1" fully
compressed without spring.
Be sure to install the spring guide "2" when
checking the oil level.
Never fail to make the oil level adjustment
between the maximum and minimum level
and always adjust each front fork to the
same setting. Uneven adjustment can
cause poor handling and loss of stability.
6-31
FRONT FORK