Suspension Setting - Yamaha YZ250N Owner's Service Manual

EC72H010

Suspension setting

9Front fork
NOTE:
9If any of the following symptoms is experienced with the standard position as the base, make reset-
ting by reference to the adjustment procedure given in the same chart.
9Before any change, set the rear shock absorber sunken length to the standard figure 90~100 mm
(3.5~3.9 in).
Symptom
Jump
Stiff over entire
1
range
Unsmooth
1
movement over
entire range
Poor initial
movement
Soft over entire
1
range, bottoming
out
Stiff toward stroke
1
end
Soft toward stroke
1
end, bottoming out
Stiff initial
1
movement
Low front, tending
to lower front
posture
"Obtrusive" front,
tending to upper
front posture
Section
Large Medium Small
gap gap gap
Compression damping
1 1
Oil level (oil amount)
Spring
Outer tube
Inner tube
1 1 1
Under bracket tightening
torque
Rebound damping
1
Oil seal
Compression damping
1
Oil level (oil amount)
Spring
Oil level (oil amount)
Oil level (oil amount)
1 1 1
Compression damping
Compression damping
Rebound damping
1 1
Balance with rear end
Oil level (oil amount)
Compression damping
Balance with rear end
1 1
Spring
Oil lever (oil amount)
SETTING
Check
Turn adjuster counterclockwise (about 2 clicks)
to decrease damping.
Decrease oil level by about 5~10 mm (0.2~0.4
in).
Replace with soft spring.
Check for any bends, dents, and other notice-
able scars, etc. If any, replace affected parts.
Retighten to specified torque.
Turn adjuster counterclockwise (about 2 clicks)
to decrease damping.
Apply grease in oil seal wall.
Turn adjuster clockwise (about 2 clicks) to in-
crease damping.
Increase oil level by about 5~10 mm (0.2~0.4
in).
Replace with stiff spring.
Decrease oil level by about 5 mm (0.2 in).
Increase oil level by about 5 mm (0.2 in).
Turn adjuster counterclockwise (about 2 clicks)
to decrease damping.
Turn adjuster clockwise (about 2 clicks) to in-
crease damping.
Turn adjuster counterclockwise (about 2 clicks)
to decrease damping.
Set sunken length for 95~100 mm (3.7~3.9 in)
when one passenger is astride seat (lower rear
posture).
Increase oil level by about 5 mm (0.2 in).
Turn adjuster counterclockwise (about 2 clicks)
to decrease damping.
Set sunken length for 90~95 mm (3.5~3.7 in)
when one passenger is astride seat (upper rear
posture).
Replace with soft spring.
Decrease oil level by about 5~10 mm (0.2~0.4
in).
7-23
TUN
Adjust