Life Fitness SM21 User manual

M051-K50-B122 1
2 STACK MULTI-JUNGLE (SM21)
WITH 2 ADJUSTABLE PULLEYS
UNPACKING AND ASSEMBLY INSTRUCTIONS

SM21 Unpacking & Assembly Instructions
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The SM21 comes partially assembled. Follow the steps below to complete the assembly.
WARNING: COMPONENTS OF THE SM21 ARE LARGE AND HEAVY. USE CAUTION
WHEN ASSEMBLING THIS MACHINE.
MATERIALS AND TOOLS REQUIRED FOR ASSEMBLY
9/16”
Socket wrench with
extension
9/16”
Combination
wrench
Pinch bar
You will also need a ladder.
ASSEMBLY TIME
Two people can accomplish this assembly in approximately 1 hour.
UNPACKING
Follow the steps below when unpacking the components of the SM21.
1. Cut off the shipping wrapper.
2. Remove the parts box and shipping boards.
3. Remove the items in the parts box.

SM21 Unpacking & Assembly Instructions
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ASSEMBLY
Figure 1 shows an assembled SM21.
Figure 1. SM21 main components (cables removed for clarity).
1. 1 stack cell (2)
2. Connecting beam
1. Place the two weight “cells” in their final resting spots. The cells will be
approximately 11’4” apart as shown in Figure 2.

SM21 Unpacking & Assembly Instructions
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Figure 2. Set the weight stack cells.
2. Bolt on the connecting beam using a 5/8” socket with extension and combination
wrench, to the cells using the four 7/16” x 6” bolts, 7/16” washers, and 7/16” nuts,
end cap washers and end caps. Figure 3 shows the connected cells. You may wish to
use a pinch bar to align the bolt holes.
Figure 3. Bolt on the connecting beam.

SM21 Unpacking & Assembly Instructions
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Figure 4. Configuration for 6” bolts.
3. Mount adjustable pulley brackets. When shipped, the adjustable pulley brackets
look like the ones shown in Figure 5. The bolts need to be removed and the bracket
needs to be positioned so that the top of the bracket is in the top hole as shown by
the arrow in Figure 5. Use a 3” bolt with flat washers, end cap washers and end caps.
When you remove the bolts, leave the pulley bolt and pulley out since you will need to
thread the cable with the pulley removed.
Figure 5. Mount adjustable pulley bracket.

SM21 Unpacking & Assembly Instructions
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ADJUSTABLE CROSSOVER CABLE ROUTING
NOTE: THE INFORMATION BELOW IS FOR REFERENCE ONLY. THE
CABLES ON THE SM21 HAVE BEEN INSTALLED AT THE
FACTORY.
Figure 6. Adjustable crossover cable routing.

SM21 Unpacking & Assembly Instructions
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Figure 7. Adjustable crossover cable end detail.
Using a 7/8” wrench, tighten the jam nut onto the adjustable pulley threads as shown in Figure
7. Place a rubber cap on the top of the cable as shown in Figure 7 (right).
Bolt the cable to the weight stacks as shown in Figure 8. Thread the 7/8” nut up on the cable
bolt as shown at left. Screw the bolt down into the weight stack as shown at right. Tighten the
bolt with a 7/8” combination wrench.
Figure 8. Screw the cable into the weight stack.

SM21 Unpacking & Assembly Instructions
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HARDWARE
Hardware Figure 1. Assembly Parts.
The parts shown in Hardware Figure 1 are used to assemble the SM21. They are:
A. 7/16” x 6” hex head bolt (used to bolt connecting beam to the tops of the cells)
B. 7/16” flat washer
C. 7/16” cap washer (use on head end of the 6” bolt so end cap will fit on the nut)
D. 7/16” hex head nut
E. End caps (bolt covers)
PARTS LIST
Part # ID Description Quantity
Main components
1
21-stack cell
Connecting beam 2 1
0017-00101-1561
0017-00104-0363
0017-00104-0366
0017-00103-0233
0017-00042-0969
6” bolt hardware
A
B
C
D
E
7/16” x 6” hex head bolt
7/16” flat washer
7/16” cap washer
7/16” Nyloc nut
End caps
4
4
4
4
4
Handle and bar
hardware Safety carabiner
Crossover handle
Leg strap
2
2
1