Adjusting The Shock Absorber Assemblies - Yamaha VMAX VMX12S Owner's Manual

4. To increase the spring rate and
thereby harden the suspension, in-
crease the air pressure with an air
pump or compressed air. To de-
crease the spring rate and thereby
soften the suspension, decrease
the air pressure by pushing each
valve stem down.
Spring rate:
Minimum/standard (soft):
Air pressure = 40 kPa
(0.4 kgf/cm², 5.7 psi)
Maximum (hard):
Air pressure = 100 kPa
(1.0 kgf/cm², 14 psi)
CAUTION:
Never exceed the maximum air pres-
sure, otherwise the front fork oil
seals may become damaged.
WARNING
There must be no difference in air
pressure between the left and right
fork legs, otherwise poor handling
and loss of stability may result.
5. Securely install the air valve caps.
INSTRUMENT AND CONTROL FUNCTIONS
Adjusting the shock absorber
assemblies
1. Shock absorber assembly
Both shock absorber assemblies are
equipped with a spring preload adjust-
ECA10090 ing ring and a damping force adjusting
knob.
CAUTION:
Never attempt to turn an adjusting
mechanism beyond the maximum or
EWA11180
minimum settings.
EAU15080
Always adjust both shock absorber
assemblies equally, otherwise poor
handling and loss of stability may
result.
Spring preload
To increase the spring preload and
thereby harden the suspension, turn
the adjusting ring on each shock ab-
sorber assembly in direction (a). To de-
crease the spring preload and thereby
soften the suspension, turn the adjust-
ing ring on each shock absorber as-
sembly in direction (b).
NOTE:
ECA10100
G
G
3-11
WARNING
Align the bottom edge of the ad-
justing ring with the appropriate
setting on the shock absorber.
Use the special wrench included in
the owner's tool kit to make this ad-
justment.
EWA10210
3