Yamaha RS90GTZ Service Manual page 113

TROUBLESHOOTING (SKI, SUSPENSION)
SYMPTOM DESCRIPTION
Front suspension bottoming
out frequently.
Front suspension is too harsh
over small bumps.
Front suspension bouncing
over bumps.
Excessive inside ski lift during
cornering. Front end is tippy.
Rear suspension bottoming
out frequently.
Rear suspension bouncing
over bumps (feels like spring
only).
POSSIBLE CAUSE
• Not enough front shock spring
preload and/or spring used is
too soft.
• Blown shock absorbers (oil
leaking out of shocks).
• Loss of nitrogen gas pressure
in the shocks.
• Too much front shock spring
preload and/or the spring used
is too stiff.
• The shock absorber oil is con-
taminated.
• Blown shock absorbers (oil
leaking out of shocks).
• Loss of nitrogen gas pressure
in the shocks.
• Stabilizer bar binding or dam-
aged joint linkage bushings.
• Control rod adjusted to pro-
vide too much weight transfer.
• Too much front shock spring
preload and/or the spring used
is too stiff.
• Center shock limiter straps are
too long.
• Not enough rear shock spring
preload and/or the spring used
is too soft.
• Blown shock absorbers (oil
leaking out of shocks).
• Loss of nitrogen gas pressure
in the shocks.
• Blown shock absorbers (oil
leaking out of shocks).
• Loss of nitrogen gas pressure
in the shocks.
2-90
INSP
ADJ
POSSIBLE REMEDY
• Increase spring preload and/or
select stiffer springs.
• Replace shocks.
• Replace shocks.
• Reduce spring preload and/or
select softer spring.
• Replace shocks.
• Replace shocks.
• Replace shocks.
• Check for free movement of
stabilizer bar. Check the condi-
tion of the joint linkage bushing
and replace as necessary.
• Adjust control rod to allow less
weight transfer.
• Reduce spring preload and/or
select a softer spring.
• Shorten limiter straps.
• Increase rear spring preload
(set rear spring preload for cor-
rect ride height). If necessary,
select stiffer springs.
• Replace shocks.
• Replace shocks.
• Replace shocks.
• Replace shocks.