Troubleshooting (Ski, Suspension) - Yamaha 2010 FX Nytro FX10X Service Manual

TROUBLESHOOTING (SKI, SUSPENSION)

TROUBLESHOOTING (SKI, SUSPENSION)
This section will point you towards possible solutions for resolving handling or ride comfort com-
plaints. When making adjustments, do it in a small increments. Also, in general, making just one
adjustment may not correct the problem. You may need to make several small adjustments to get
the best overall results.
Keep in mind that how the snowmobile handles going down the trail is usually controlled by the front
suspension, the center shock, and the limiter straps. How the snowmobile rides (ride comfort) is
usually controlled by the rear shock.
Also, remember that snowmobile suspension adjustments may involve compromises. Tuning a
snowmobile to do one thing very well may come at the sacrifice of something else. For example, if
the snowmobile is setup to provide optimum weight transfer for best acceleration, this same setting
will not be ideal for trail riding, because excessive under steering may be experienced during cor-
nering. You must have a good working knowledge of the suspension and tune the suspension to
provide best overall balance for specific conditions and usages.
SYMPTOM DESCRIPTION
Front of the snowmobile darts
from side to side on a straight-
away.
Under steering – front end
(skis) pushes when cornering.
Over steering. Front end (skis)
bites too much during corner-
ing – rear of the snowmobile
starts to come around.
Heavy steering – excessive
force is needed to turn the
handlebars.
POSSIBLE CAUSE
• Too much weight on skis.
• Skis out of alignment.
• Loose steering ball joints.
• Too much carbide on ski run-
ners.
• Worn or missing carbides on
ski runners.
• Not enough weight on skis.
• Too much weight on skis.
• Too much carbides on ski run-
ners.
• Too much weight on skis.
• Too much carbides on ski run-
ners.
• Steering linkage binding.
36
INSP
ADJ
POSSIBLE REMEDY
• Extend center shock limiter
straps and/or increase center
shock spring preload or reduce
rear shock spring preload or
reduce front shock spring pre-
load.
• Adjust "ski-toe-out."
• Replace worn ball joints.
• Use ski runners with less car-
bide.
• Replace carbide runners.
• Reduce center shock spring
preload and/or shorten center
shock limiter straps. Increase
front shock spring preload.
• Extend center shock limiter
straps and/or increase center
shock spring preload or reduce
rear shock spring preload or
reduce front shock spring pre-
load.
• Use ski runners with less car-
bides.
• Extend center shock limiter
straps and/or increase center
shock spring preload or reduce
rear shock spring preload or
reduce front shock spring pre-
load.
• Use ski runners with less car-
bides.
• Clean and lubricate steering
ball joints and column.