Yamaha VMAX VMX12V Owner's Manual page 27

1. Front fork air valve cap
2. Front fork air valve
3. Check the air pressure in each fork
leg with an air pressure gauge.
1. Air pressure gauge
NOTE:
An optional air pressure gauge is avail-
INSTRUMENT AND CONTROL FUNCTIONS
able at a Yamaha dealer.
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 (5.7 psi) (0.4
2
kgf/cm )
Maximum (hard):
Air pressure = 100 kPa (14 psi)
2
(1.0 kgf/cm )
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.
3-11
5. Securely install the air valve caps.
ECA10090
EWA11180
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