Yamaha VK540EK Owner's Manual page 57

Extension spring preload adjustment
Adjust the extension spring preload by turning the
adjuster 1.
CD-22E
Adjuster
Preload
Snow condition
a Standard length
CAUTION :
@
Be sure the left and right extension spring preloads
are the same. Uneven settings can cause loss of sta-
bility.
@
8-16
Turn in Turn out
Hard Soft
Icy Soft
16 mm (0.63 in)