Yamaha YZ450FT Automobile User Manual


 
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TUN
SETTING
Rear shock absorber
N
OTE:
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.