Suspension Setting (Front Fork) - Yamaha YZ 2020 Series Owner's Service Manual

EAM30179

SUSPENSION SETTING (FRONT FORK)

TIP
• If any of the following symptoms is experienced with the standard position as the base, make resetting
by reference to the adjustment procedure given in the same chart.
• Before 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

range
Unsmooth move-

ment over entire
range
Poor initial move-
ment
Soft over entire

range, bottoming
out
Stiff toward

stroke end
Soft toward

stroke end, bot-
toming out
Stiff initial move-

ment
Section
Large Medium Small
gap gap gap
 
  


  
10-6
Check
Turn adjuster counterclockwise
Compression
(about 2 clicks) to decrease
damping force
damping.
Decrease oil amount by about 5–
Oil amount 10 cm³ (0.2–0.3 US oz, 0.2–0.4
Imp.oz).
Spring Replace with soft spring.
Check for any bends, dents, other
Outer tube
noticeable scars, etc. If any,
Inner tube
replace affected parts.
Replace with a new one for
Slide metal
extended use.
Replace with a new one for
Piston metal
extended use.
Lower bracket
Retighten to specified torque.
tightening torque
Turn adjuster counterclockwise
Rebound damp-
(about 2 clicks) to decrease
ing force
damping.
Oil seals Apply grease in oil seal wall.
Compression Turn adjuster clockwise (about 2
damping force clicks) to increase damping.
Increase oil amount by about 5–
Oil amount 10 cm³ (0.2–0.3 US oz, 0.2–0.4
Imp.oz).
Spring Replace with stiff spring.
Decrease oil amount by about 5
Oil amount
cm³ (0.2 US oz, 0.2 Imp.oz).
Increase oil amount by about 5
Oil amount
cm³ (0.2 US oz, 0.2 Imp.oz).
Turn adjuster counterclockwise
Compression
(about 2 clicks) to decrease
damping force
damping.
CHASSIS
Adjust