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Zuma Assembly and Maintenance Guide
Selector Stem Adjustments
To prevent the Selector Stem from contacting the inside
of the weight stack when the machine is in use, you
need to check the vertical angle of the Selector Stem.
Caution: Performing the following tasks
requires two people.
1. Remove the Weight Pin from the weight stack.
2. Perform an exercise on the Zuma until the base of
the Selector Stem is clear of the weight stack.
If the stem slides smoothly without contacting the
inside of the weight plates, no adjustments are
needed.
If the stem contacts the inside of the plates,
observe the position of the Selector Stem, and then
follow the appropriate instructions.
If the Selector Stem...
Angles forward toward the seat
Angles backward
Angles off vertically
Forward Angle Adjustment
When the Selector Stem angles forward (toward the
seat) and contacts the inside of the Weight Stack during
use, adjust it by following these steps:
CAUTION: This adjustment requires two people.
A. Completely disassemble the Top Cap Weight,
Selector Stem, and U bracket.
B. Thread the Allen head set screw into the hole
closest to the top of the U bracket and turn it
clockwise until the end of the screw is flush with the
inside surface of the U bracket.
C. Turn the set screw clockwise another one-half turn
(see diagram).
Adjustments
1 ½" Socket
Cap Bolt
Then...
See below
See page 31
See page 32
A
Top Cap
Weight
U Bracket
Selector Stem
Forward Angle
1
2
3
B
Allen head
set screw
B
Set screw
Inside
surface
4
5
6
page 30
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