Zero Motorcycles MX, Owner'S Manual, Page: 52 / 100

4-23
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Spring Pre-load Adjustment
1. Clean any dirt or debris from the
threads of the shock.
2. Using a spanner wrench loosen the
lock nut (A).
3. For measurements less than 90 mm (3.5 in),
decrease the pre-load on the spring by
turning the spring nut (B) counter-clockwise
on the shock. If more than 100 mm (4.0 in),
increase the pre-load on the spring by
turning the spring nut (B) clockwise on the
shock.
4. Recheck the sag. If the sag is correct,
tighten the lock nut (A).
•
Rebound Adjustment - The rebound adjuster knob
(C) is at the bottom of the shock. It has 8 stages
of adjustment. Printed on the knob is S-F,
meaning Slow and Fast. The rebound adjuster
knob controls how slow or fast the shock returns
to its extended position after being compressed.
Turning the knob clockwise, or S direction, is
good for big impacts. Turning the knob counter-
clockwise, or F direction, is good for many
smaller and more frequent impacts.
F
S
R
A
B
C