Suspension Setting (Rear Shock Absorber) - Yamaha WR450F Owner's Service Manual

Symptom
Jump
Low front, tend-
ing to lower
front posture
"Obtrusive"
front, tending to
upper front pos-
ture

SUSPENSION SETTING (REAR SHOCK ABSORBER)

EAS2GC1149
TIP
• If 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.
• Adjust the rebound damping in 2-click increments or decrements.
• Adjust the low compression damping in 1-click increments or decrements.
• Adjust the high compression damping in 1/6 turn increments or decrements.
Symptom
Jump
Stiff, tending to
sink
Spongy and un-
stable
Section
Medi-
Large Small
um
gap gap
gap
Section
Medi-
Large Small
um
gap gap
gap
Check
Compression
damping force
Rebound
damping force
Balance with
rear end
Oil amount
Compression
damping force
Balance with
rear end
Spring
Oil amount
Check
Rebound
damping force
Spring set
length
Rebound
damping force
Low compres-
sion damping
Spring
4-7
CHASSIS
Adjust
Turn adjuster clockwise (about
2 clicks) to increase damping.
Turn adjuster counterclock-
wise (about 2 clicks) to de-
crease damping.
Set sunken length for 95–100
mm (3.7–3.9 in) when one
passenger is astride seat (low-
er rear posture).
Increase oil amount by about 5
3
cm (0.2 US oz, 0.2 Imp.oz).
Turn adjuster counterclock-
wise (about 2 clicks) to de-
crease damping.
Set sunken length for 90–95
mm (3.5–3.7 in) when one
passenger is astride seat (up-
per rear posture).
Replace with soft spring.
Decrease oil amount by about
3
5–10 cm (0.2–0.3 US oz, 0.2–
0.4 Imp.oz).
Adjust
Turn adjuster counterclock-
wise (about 2 clicks) to de-
crease damping.
Set sunken length for 90–100
mm (3.5–3.9 in) when one
passenger is astride seat.
Turn adjuster clockwise (about
2 clicks) to increase damping.
Turn adjuster clockwise (about
1 click) to increase damping.
Replace with stiff spring.