Yamaha YZ125N1 Motorcycle User Manual


 
TUN
7-23
SETTING
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).
Section
Symptom
Jump
Large
Medium
Small Check Adjust
gap gap gap
Compression damping Turn adjuster counterclockwise (about 2 clicks)
Stiff over entire
to decrease damping.
range
111 Oil level (oil amount) Decrease oil level by about 5~10 mm (0.2~0.4
in).
Spring Replace with soft spring.
Unsmooth
Outer tube Check for any bends, dents, and other notice-
movement over
1111
Inner tube able scars, etc. If any, replace affected parts.
entire range
Under bracket tightening
Retighten to specified torque.
torque
Poor initial
Rebound damping Turn adjuster counterclockwise (about 2 clicks)
movement
1 to decrease damping.
Oil seal Apply grease in oil seal wall.
Compression damping Turn adjuster clockwise (about 2 clicks) to in-
Soft over entire crease damping.
range, bottoming 11 Oil level (oil amount) Increase oil level by about 5~10 mm (0.2~0.4
out in).
Spring Replace with stiff spring.
Stiff toward stroke
1 Oil level (oil amount) Decrease oil level by about 5 mm (0.2 in).
end
Soft toward stroke
1 Oil level (oil amount) Increase oil level by about 5 mm (0.2 in).
end, bottoming out
Stiff initial
1111
Compression damping
Turn adjuster counterclockwise (about 2 clicks)
movement to decrease damping.
Compression damping Turn adjuster clockwise (about 2 clicks) to in-
crease damping.
Low front, tending
Rebound damping Turn adjuster counterclockwise (about 2 clicks)
to lower front 11
to decrease damping.
posture
Balance with rear end Set sunken length for 95~100 mm (3.7~3.9 in)
when one passenger is astride seat (lower rear
posture).
Oil level (oil amount) Increase oil level by about 5 mm (0.2 in).
Compression damping Turn adjuster counterclockwise (about 2 clicks)
to decrease damping.
“Obtrusive” front,
Balance with rear end Set sunken length for 90~95 mm (3.5~3.7 in)
tending to upper 11
when one passenger is astride seat (upper rear
front posture
posture).
Spring Replace with soft spring.
Oil lever (oil amount) Decrease oil level by about 5~10 mm (0.2~0.4
in).
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