Yamaha VMX EAU10041 - Manual (Page 28)

INSTRUMENT AND CONTROL FUNCTIONS
3-11
3
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.
CAUTION:
ECA10090
Never exceed the maximum air pres-
sure, otherwise the front fork oil
seals may become damaged.
WARNING
EWA11180
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.
EAU15081
Adjusting the shock absorber
assemblies
Both shock absorber assemblies are
equipped with a spring preload adjust-
ing ring and a damping force adjusting
knob.
CAUTION:
ECA10100
Never attempt to turn an adjusting
mechanism beyond the maximum or
minimum settings.
WARNING
EWA10210
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).
Spring rate:
Minimum/standard (soft):
Air pressure = 40 kPa (5.7 psi) (0.4
kgf/cm²)
Maximum (hard):
Air pressure = 100 kPa (14 psi)
(1.0 kgf/cm²)
1. Shock absorber assembly
U5GK15E0.book Page 11 Tuesday, April 13, 2004 3:52 PM