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INSTRUMENT AND CONTROL FUNCTIONS
1. Front fork air valve cap
4
3. Check the air pressure in each fork
leg using a low-pressure air
gauge. A low-pressure air gauge is
available at a Yamaha dealer.
4. To increase the spring rate and
thereby harden the suspension, in-
crease the air pressure with an air
pump. To decrease the spring rate
and thereby soften the suspen-
sion, decrease the air pressure by
pushing each valve stem down.
Spring rate:
Minimum (soft):
Air pressure = 0 kPa (0 kgf/cm², 0
psi)
Standard:
Air pressure = 0 kPa (0 kgf/cm², 0
psi)
Maximum (hard):
Air pressure = 50 kPa (0.5 kgf/cm²,
7.1 psi)
5. Securely install the air valve caps.
4-18
Adjusting the shock absorber
assembly
This shock absorber assembly is
equipped with an air valve for adjusting
the spring rate.
NOTICE
To avoid damaging the mechanism,
do not attempt to turn beyond the
maximum or minimum settings.
Adjust the spring rate as follows.
1. Place the vehicle on the sidestand.
When checking and adjusting the
air pressure, there should be no
weight on the vehicle.
2. Remove the air valve cap.
1. Shock absorber assembly air valve cap
EAU14801
ECA10101
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Troubleshooting
