Yamaha YZ450FP 2023, Owner'S Service Manual

Page: 381 / 388

CHASSIS
10-8
Heavy and drag-
ging
 
Rebound damp-
ing force
Turn adjuster counterclockwise
(about 2 clicks) to decrease
damping.
Spring Replace with soft spring.
Poor road grip-
ping

Rebound damp-
ing force
Turn adjuster counterclockwise
(about 2 clicks) to decrease
damping.
Low compres-
sion damping
Turn adjuster clockwise (about 1
click) to increase damping.
High compres-
sion damping
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 pas-
senger is astride seat.
Spring Replace with soft spring.
Bottoming out
 
High compres-
sion damping
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 pas-
senger is astride seat.
Spring Replace with stiff spring.
Bouncing
 
Rebound damp-
ing force
Turn adjuster clockwise (about 2
clicks) to increase damping.
Spring Replace with soft spring.
Stiff travel
 
High compres-
sion damping
Turn adjuster counterclockwise
(about 1/6 turn) to decrease
damping.
Spring set length
Set sunken length for 90–100
mm (3.5–3.9 in) when one pas-
senger is astride seat.
Spring Replace with soft spring.
Symptom
Section
Check Adjust
Jump
Large
gap
Medium
gap
Small
gap