General Operation
4.17
Front Suspension Adjustment
A shock has two main actions: compression when the
shock gets loaded, and rebound when the shock returns
back to full length. Compression damping is the
adjustment that determines how fast or slow the fork
compresses. Rebound damping is the adjustment that
determines how fast or slow the fork rebounds.
Measuring Preload
Obtaining the correct front suspension preload (sag) is
critical for proper handling. The spring preload must be set
to match the weight of the rider. The spring is preloaded for
an 180 lb (82 kg) rider. This puts the front tire 1/3 of the
wa
y through its vertical travel. Heavier riders require stiffer
spring rates. A good approximation of your front springs
requirements can be found by measuring the front
suspension’s sag. This measurement quickly determines if
your front springs are approximately correct for your
weight. This adjustment is a recommended guideline;
personal riding preference may vary from the
specifications given.
To Check the Sag value:
1. Support your motorcycle upright on a stand with the
fro
nt wheel on the ground.
2. Measure vertically from the bottom of the fork tube to
th
e bottom of the tube’s dust seal.
3. Record this measurement (this is the measurement
re
ferred to as M1).
4. Remove the motorcycle from the stand.
5. Wearing your normal riding apparel, sit on the
motorcycle.
6. Have an assistant hold the motorcycle upright, your feet
sh
ould be on both pegs.
7. Bounce the suspension a couple of times.
8. Have a second assistant take a measurement using the
sa
me locations as in step 2.
Zero Owner's Manual (S and DS).book Page 17 Tuesday, January 20, 2015 2:37 PM
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