Yamaha WR450F, Owner'S Service Manual

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T U N
SETTING
• Rear shock absorber
NOTE:
• 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.
• 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
Section
Check Adjust
Jump
Large
gap
Medium
gap
Small
gap
Stiff, tending to sink
Rebound damping Turn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Spring set length Set sunken length for 90 ~ 100 mm (3.5 ~ 3.9 in)
when one passenger is astride seat.
Spongy and unstable
Rebound damping Turn adjuster clockwise (about 2 clicks) to increase
damping.
Low compression damp-
ing Turn adjuster clockwise (about 1 click) to increase
damping.
Spring Replace with stiff spring.
Heavy and dragging
Rebound damping Turn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Spring Replace with soft spring.
Poor road gripping
Rebound damping Turn adjuster counterclockwise (about 2 clicks) to
decrease damping.
Low compression damp-
ing Turn adjuster clockwise (about 1 clicks) to increase
damping.
High compression damp-
ing Turn adjuster clockwise (about 1/6 clicks) to
increase damping.
Spring set length Set sunken length for 90 ~ 100 mm (3.5 ~ 3.9 in)
when one passenger is astride seat.
Spring Replace with soft spring.
Bottoming out
High compression damp-
ing Turn adjuster clockwise (about 1/6 turn) to increase
damping.
Spring set length Set sunken length for 90 ~ 100 mm (3.5 ~ 3.9 in)
when one passenger in astride seat.
Spring Replace with stiff spring.
Bouncing
Rebound damping Turn adjuster clockwise (about 2 clicks) to increase
damping.
Spring Replace with soft spring.
Stiff travel
High compression damp-
ing Turn adjuster counterclockwise (about 1/6 turn) to
decrease damping.
Spring set length Set sunken length for 95 ~ 100 mm (3.7 ~ 3.9 in)
when one passenger is astride seat.
Spring Replace with soft spring.