Model No. 831.159530
Serial No.
The serial number is found in the
location shown below. Write the
serial number in the space above.
USER’S MANUAL
Serial Number Decal
Patent Pending
SEARS, ROEBUCK AND CO.
HOFFMAN ESTATES, IL 60179
CAUTION
Visit our website at
Read all precautions and instruc-
tions in this manual before using
this equipment. Save this manu-
al for future reference.
new products, prizes,
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IMPORTANT PRECAUTIONS
WARNING:
To reduce the risk of serious injury, read the following important precau-
tions before using the weight system.
1. Read all instructions in this manual and in
the accompanying literature before using the
weight system.
12. Never release the press arms, butterfly arms,
leg lever, lat bar, or ab strap while weights
are raised. The weights will fall with great
force.
2. It is the responsibility of the owner to ensure
that all users of the weight system are ade-
quately informed of all precautions.
13. Always disconnect the lat bar or ab strap
from the weight system when performing an
exercise that does not use the attachments.
3. The weight system is intended for home use
only. Do not use the weight system in a com-
mercial, rental, or institutional setting.
14. If you feel pain or dizziness at any time while
exercising, stop immediately and begin cool-
ing down.
4. Use the weight system only on a level sur-
face. Cover the floor or carpet beneath the
weight system to protect the floor or carpet.
15. Do not place more that 200 pounds on either
weight carriage. Always place the same
amount of weight on both sides of each
weight carriage.
5. Make sure all parts are properly tightened
each time you use the weight system.
Replace any worn parts immediately.
16. The warning decals
shown here have
been placed on the
weight system in the
locations shown on
page 4. Note that
decal 1 has been
placed in two loca-
tions. If a decal is
missing or illegible,
please call our toll-
free HELPLINE at
1-800-736-6879,
6. Keep children under the age of 12 and pets
away from the weight system at all times.
7. The weight system is designed to be used by
no more than two people at a time.
8. Always wear athletic shoes for foot protec-
tion when exercising.
9. Keep hands and feet away from moving parts.
10. Make sure the cables remain on the pulleys
at all times. If the cables bind while you are
exercising, stop immediately and make sure
the cables are on all of the pulleys.
Monday through
Saturday, 7 a.m. until
7 p.m. Central Time,
to order a free
Decal 1
replacement decal.
Place the decal on
the weight system in
the location shown.
11. Always stand on the foot plate when perform-
ing an exercise that could cause the weight
system to tip.
Keep hands and
fingers clear of
this area.
Decal 2
WARNING:
Before beginning this or any exercise program, consult your physician. This
is especially important for persons over the age of 35 or persons with pre-existing health problems.
Read all instructions before using. SEARS assumes no responsibility for personal injury or property
damage sustained by or through the use of this product.
3
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BEFORE YOU BEGIN
Thank you for selecting the innovative and versatile
WEIDER® PRO 9950 weight system. The WEIDER®
PRO 9950 offers a unique selection of weight stations
designed to develop every major muscle group of the
body. Whether your goal is to tone your body, build
dramatic muscle size and strength or improve your
cardiovascular system, the WEIDER® PRO 9950
makes it easy to achieve the results you want.
have additional questions, please call our toll-free
HELPLINE at 1-800-736-6879, Monday through
Saturday, 7 a.m. until 7 p.m. Central Time (excluding
holidays). To help us assist you, please note the prod-
uct model number and serial number before calling.
The model number is 831.159530. The serial number
can be found on a decal attached to the weight system
(see the front cover of this manual).
For your benefit, read this manual carefully before
Please use the drawing below to familiarize your-
using the WEIDER® PRO 9950 weight system. If you self with the major parts and how they fit together.
ASSEMBLED
DIMENSIONS:
Butterfly Arms
Height: 77 in.
Width: 103 in.
Depth: 55 in.
Decal 1
Ab Pulley Station
Backrest
High Pulley
Station
Lat Bar
Decal 1
Curl Pad
Press Arms
Leg Lever
Backrest
Seat
Decal 2
Low Pulley
Station
Foot Plate
Weight Carriage
Leg Press Arm
Leg Press Plate
4
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ASSEMBLY
Make sure you have the following tools:
• Two adjustable wrenches
Make Assembly Easier for Yourself
Everything in this manual is designed to
ensure that the weight system can be assem-
bled successfully by anyone. Before begin-
ning assembly, make sure to read the
information on this page. This brief intro-
duction will save you much more time than
it takes to read it.
• One standard screwdriver
• One phillips screwdriver
• One rubber mallet
• You will also need grease or petroleum jelly, a
small amount of soapy water, and clear tape or
masking tape.
Assembly Requires Two Persons
Note: Assembly will be more convenient if you have
a socket set, a set of open-end or closed-end
wrenches, or a set of ratchet wrenches.
For your convenience and safety, assemble the
weight system with the help of another person.
Set Aside Enough Time
How to Identify Parts
Due to the many features of the weight system, the
assembly process will take time. By setting aside
plenty of time and by deciding to make the task
enjoyable, assembly will go smoothly. You may want
to assemble the weight system over a couple of
evenings.
To help you identify the small parts used in assembly,
we have included a PART IDENTIFICATION CHART
in the center of this manual. Place the chart on the
floor and use it to easily identify parts during each
assembly step. Note: Some small parts may have
been pre-attached. If a part is not in the parts
bag, check to see if it has been pre-attached.
Select a Location for the Weight System
How to Orient Parts
Because of its weight and size, the weight system
should be assembled in the location where it will be
used. Make sure that there is enough room to walk
around the weight system as you assemble it.
As you assemble the weight system, make sure that
all parts are oriented exactly as shown in the draw-
ings.
How to Unpack the Box
Tightening Parts
To make assembly as easy as possible, we have
divided the assembly process into four stages. The
parts needed for each stage are found in individual
bags. Important: Wait until you begin each stage
to open the parts bag for that stage. Place all
parts of the weight system in a cleared area and
remove the packing materials. Do not dispose of
the packing materials until assembly is completed.
Tighten all parts as you assemble them, unless
instructed to do otherwise.
Questions?
If you have questions after reading the assembly
instructions, please call our HELPLINE at
1-800-736-6879.
The Four Stages of the Assembly Process
Frame Assembly—You will begin by assembling
the base and the uprights that form the skeleton of
the weight system.
Cable Assembly—During this stage you will
attach the cables and pulleys that connect the
arms to the weights.
Arm Assembly—During this stage you will
assemble the arms and the leg lever.
Seat Assembly—During the final stage you will
assemble the seats and the backrests.
5
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1
2
3
Frame Assembly
59
55
34
1. Before beginning, make sure that you have
read and understood the information on page 5.
64
1
Locate and open the parts bags labeled
“FRAME ASSEMBLY 1 and 2.”
64
2
54
Press a 2” Square Inner Cap (59) into each end
of the Butterfly Base (1).
54
59
Insert four 5/16” x 2 1/2” Carriage Bolts (54) up
through the Butterfly Base (1). Place the Butterfly
Base flat on the floor. Note: If the Bolts fall out,
secure them with a small piece of tape.
64
Attach the Center Base (2) to the Butterfly Base
(1) with two 5/16” x 2 3/4” Bolts (55), a Long
Support Plate (34), and two 5/16” Nylon Locknuts
(64). Do not tighten the Nylon Locknuts yet.
59
2
64
34
2. Press a 2” Square Inner Cap (59) into each end
of the Press Base (3).
3
76
55
59
54
Insert four 5/16” x 2 1/2” Carriage Bolts (54) and
two 3/8” x 2 1/2” Carriage Bolts (76) up through
the Press Base (3). Place the Press Base flat on
the floor. Note: If the Bolts fall out, secure
them with a small piece of tape.
54
Attach the Press Base (3) to the Center Base (2)
with two 5/16” x 2 3/4” Bolts (55), a Long Support
Plate (34), and two 5/16” Nylon Locknuts (64). Do
not tighten the Nylon Locknuts yet.
3. Orient the Butterfly Upright (4) as shown. Attach
the Butterfly Upright to the indicated 5/16” x 2
1/2” Carriage Bolts (54) in the Butterfly Base (1)
with two 5/16” Nylon Locknuts (64). Do not tight-
en the Nylon Locknuts yet.
4
64
64
54
1
6
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4. Press a 1 1/2” Square Inner Cap (100) into the
indicated part of the Press Upright (6).
4
Orient the Press Upright (6) as shown. Attach the
Press Upright to the indicated 5/16” x 2 1/2”
Carriage Bolts (54) in the Press Base (3) with two
5/16” Nylon Locknuts (64).
100
Attach the Support Brace (7) to the indicated 3/8”
x 2 1/2” Carriage Bolts (76) in the Press Base (3)
with two 3/8” Nylon Locknuts (74).
64
Attach the Support Brace (7) to the Press Upright
(6) with two 5/16” x 2 1/2” Carriage Bolts (54) and
two 5/16” Nylon Locknuts (64).
7
54
64
74
6
74
Do not tighten the Nylon Locknuts (64, 74) yet.
64
64
76
54
3
5. Press two 1” Inner Caps (32) into the ends of the
weight tube on a Weight Carriage (28).
5
27
31
32
If you will be using Olympic weights with the
weight system, slide a Weight Sleeve (27) onto
each end of the weight tube on the Weight
Carriage (28). Secure each Weight Sleeve with a
Locking Pin (31). Note: The drawings in this
manual show the Weight Sleeves attached.
The Locking Pins will be found in the bag
labled “SEAT ASSEMBLY”.
28
Weight Tube
27
31
Repeat this step with the other Weight Carriage
(28).
6
6. Press a Weight Bumper (56) onto each bumper
tube on the Center Base (2). Press a 1 1/2”
Round Inner Cap (67) into each bumper tube.
33
33
Attach two Weight Guides (33) to the indicated
tube in the Center Base (2) with a 3/8” x 6” Bolt
(89) and a 3/8” Nylon Locknut (74).
67
56
74
Attach the other set of Weight Guides (33) in the
same manner.
67
2
56
Do not tighten the 3/8” Nylon Locknuts (74)
yet.
Tube
Bumper
Tube
89
7
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7. Slide a Weight Carriage (28) onto each set of
Weight Guides (33). Be sure the weight tubes
are near the top of the Weight Carriages
7
Weight
Tube
33
28
33
28
8. Attach the Top Frame (5) to the Butterfly Upright
(4) with two 3/8” x 2 3/4” Bolts (58), a Short
Support Plate (26), and two 3/8” Nylon Locknuts
(74). Note: Be sure that the Top Frame is ori-
ented with the long bracket on the side
shown, and that it rests between the Weight
Guides (33) as shown in step 9.
8
58
26
Long Bracket
58
5
Attach the Top Frame (5) to the Press Upright (6)
in the same manner.
26
74
4
Do not tighten the 3/8” Nylon Locknuts (74) yet.
33
33
6
74
9. Attach each set of Weight Guides (33) to the Top
Frame (5) with a 3/8” x 6” Bolt (89) and a 3/8”
Nylon Locknut (74). Do not tighten the Nylon
Locknuts yet.
9
74
89
5
33
33
10. Press three 2” Square Inner Caps (59) into the
Butterfly Top Frame (19).
10
55
34
55
Attach the Butterfly Top Frame (19) to the
Butterfly Upright (4) with two 5/16” x 2 3/4” Bolts
(55), a Long Support Plate (34), and two 5/16”
Nylon Locknuts (64).
59
59
Attach the Butterfly Top Frame (19) to the Top
Frame (5) with two 5/16” x 2 3/4” Bolts (55), a
Long Support Plate (34), and two 5/16” Nylon
Locknuts (64).
19
59
64
5
64
Do not tighten the 5/16” Nylon Locknuts (64)
yet.
4
64
8
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11. Press a 2” Square Inner Cap (59) into the Press
Top Frame (13).
11
55
59
Attach the Press Top Frame (13) to the Press
Upright (6) with two 5/16” x 2 3/4” Bolts (55), a
Long Support Plate (34), and two 5/16” Nylon
Locknuts (64).
34
13
5
107
55
Attach the back hole on the side of the Press Top
Frame (13) to the Top Frame (5) with a 5/16” x 2
3/4” Bolt (55), the Pulley Support Plate (107), and
a 5/16” Nylon Locknut (64).
64
91
44
64
74
37
6
Attach the next hole on the side of the Press Top
Frame (13), a 3 1/2” Pulley (37) and a Cable Trap
(44) to the Top Frame (5) with a 3/8” x 4” Bolt
(91), the Pulley Support Plate (107), and a 3/8”
Nylon Locknut (74). Do not overtighten the
Nylon Locknut; the Pulley must be able to turn
easily.
12
55
59
64
66
Do not tighten the Nylon Locknuts (64, 74) yet.
12
6
71
64
12. Attach a Bumper (71) to the Press Seat Frame
(12) with a Bumper Screw (72).
64
3
72
Attach the Press Seat Frame (12) to the 5/16” x
2 1/2” Carriage Bolts (54) in the Press Base (3)
with two 5/16” Nylon Locknuts (64).
54
Adjustment knob
must be on this side
13
Attach the Press Seat Frame (12) to the Press
Upright (6) with two 5/16” x 2 3/4” Bolts (55), two
5/16” Washers (66), and two 5/16” Nylon
Locknuts (64).
66
10
Do not tighten the 5/16” Nylon Locknuts (64)
yet.
64
55
66
13. Attach the Butterfly Seat Frame (10) to the
Butterfly Front Leg (9) with two 5/16” x 2 3/4”
Bolts (55), two 5/16” Washers (66), and two 5/16”
Nylon Locknuts (64). Do not tighten the Nylon
Locknuts yet. Be sure the Adjustment Knob
(not shown) is on the indicated side.
9
14
10
66
55
14. Attach a Bumper (71) to the Butterfly Front Leg
(9) with a Bumper Screw (72).
64
66
Attach the Butterfly Front Leg (9) to the 5/16” x
2 1/2” Carriage Bolts (54) in the Butterfly Base (1)
with two 5/16” Nylon Locknuts (64).
71
72
9
64
64
Attach the Butterfly Seat Frame (10) to the
Butterfly Upright (4) with two 5/16” x 2 3/4” Bolts
(55), two 5/16” Washers (66), and two 5/16”
Nylon Locknuts (64).
1
54
Tighten all of the Nylon Locknuts (64, 74)
used in steps 1 to 14.
9
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15
Arm Assembly
88
59
9
15. Locate and open the parts bag labeled “ARM
ASSEMBLY.”
101
Lubricate
8
Press a 2” Square Inner Cap (59) into each end
of the Leg Lever (8).
Lubricate the 3/8” x 3 1/4” Bolt (101). Attach the
Leg Lever (8) to the Butterfly Front Leg (9) with
the Bolt and a 3/8” Nylon Jamnut (88).
59
16. Press two 1 3/4” Square Inner Caps (60) into the
ends of the the Right Butterfly Arm (18). Press
two Handgrips (99) onto the handle on the Right
Butterfly Arm.
16
60
99
Assemble the Left Butterfly Arm (17) in the same
manner.
Handle
18
17
60
99
17. Lubricate both axles on the Butterfly Top Frame
(19). Slide the Right Butterfly Arm (18) onto the
indicated axle. Be sure the upper end of the
Butterfly Arm is behind the bracket on the
Butterfly Top Frame.
17
19
Bracket
Axle
Tap two 1” Retainers (85) and a 1” Round Cover
Cap (86) onto the axle. Be sure that the teeth
on the Retainers bend toward the Round
Cover Cap, as shown in the inset drawing.
18
85
17
86
Attach the Left Butterfly Arm (17) in the same
manner.
Axle
85
86
10
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18. Press two 1 3/4” Square Inner Caps (60) into the
top of the Press Frame (14).
18
13
Lubricate the 3/8” x 9” Bolt (92). Attach the Press
Frame (14) to the Press Top Frame (13) with the
Bolt, four 3/8” SAE Washers (102), and a 3/8”
Nylon Locknut (74). Do not overtighten the
Nylon Locknut; the Press Frame must be able
to pivot easily.
74
60
102
102
14
92
19. Press a 1 3/4” Square Inner Cap (60) into the bot-
tom of the Right Press Arm (16). Press two
Handgrips (99) onto the top and bottom of the
handle.
19
16
99
Assemble the Left Press Arm (15) in the same
manner.
15
Handle
60
99
20. Attach the Right Press Arm (16) to the Press
Frame (14) with two 5/16” x 2 1/2” Bolts (63) and
two 5/16” Nylon Locknuts (64).
20
16
Attach the Left Press Arm (15) in the same man-
ner.
64
63
14
15
11
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21. Lubricate the 1/2” x 3 1/2” Bolt (96). Attach the
Leg Press Arm (22) to the Press Base (3) with the
Bolt and a 1/2” Nylon Locknut (95). Do not over-
tighten the Nylon Locknut; the Leg Press Arm
must be able to pivot easily.
21
22
3
95
Lubricate
96
22
Cable Assembly
75
13
22. Locate and open the parts bag labeled
“CABLE ASSEMBLY.” For Cable identification
and routing during steps 22 to 52, refer to the
CABLE DIAGRAMS and CABLE ID CHART on
page 26.
74
80
Rod
37
65
Do not overtighten the nylon locknuts attach-
ing the pulleys to the weight system; the pul-
leys must be able to turn freely.
Ball
Identify the Press Cable (80). It is approximately
387.25” long and it has a ball on one end and a
loop on the other. Wrap the Press Cable around a
3 1/2” Pulley (37). Attach the Pulley to the Press
Top Frame (13) with a 3/8” x 3 1/2” Bolt (65), a
3/8” Washer (75), and a 3/8” Nylon Locknut (74).
Be sure the Cable is between the Pulley and
the rod on the Press Top Frame, and that the
ball is on the side shown.
23
44
91
37
80
23. Loosen the 3/8” Nylon Locknut (not shown) on
the 3/8” x 4” Bolt (91). Wrap the Press Cable (80)
around the 3 1/2” Pulley (37), making sure the
Cable is between the Pulley and the Cable Trap
(44). Re-tighten the Nylon Locknut.
24. Wrap the Press Cable (80) around a 3 1/2” Pulley
(37). Attach the Pulley to the indicated side of the
Press Frame (14) with a 3/8” x 3 1/2” Bolt (65), a
3/8” Washer (75), and a 3/8” Nylon Locknut (74).
24
74
37
14
75
65
80
12
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25. Wrap the Press Cable (80) around a “V”-Pulley
(38). Attach the Pulley to the Press Upright (6)
with a 3/8” x 3 3/4” Bolt (62), a 3/8” Washer (75),
and a 3/8” Nylon Locknut (74).
25
62
38
80
6
75
74
26. Wrap the Press Cable (80) around a 3 1/2” Pulley
(37). Attach the Pulley to the other side of the
Press Frame (14) with a 3/8” x 3 1/2” Bolt (65), a
3/8” Washer (75), and a 3/8” Nylon Locknut (74).
26
65
75
80
14
37
74
27. Wrap the Press Cable (80) around a 3 1/2” Pulley
(37). Attach the Pulley and a Cable Trap (44) to
the Press Upright (6) with a 3/8” x 3 3/4” Bolt
(62), a 3/8” Washer (75), and a 3/8” Nylon
Locknut (74). Make sure the Cable Trap is
turned to hold the Cable in the groove of the
Pulley.
27
74
37
44
80
75
62
6
28. Wrap the Press Cable (80) around a 3 1/2” Pulley
(37). Attach the Pulley and a Cable Trap (44) to
the bottom of the Press Upright (6) with a 3/8” x
3 3/4” Bolt (62), a 3/8” Washer (75), and a 3/8”
Nylon Locknut (74). Make sure the Cable Trap
is turned to hold the Cable in the groove of
the Pulley.
28
6
74
37
80
44
62
75
13
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29. Slide a 3/8” x 5” Bolt (61) through a 3 1/2” Pulley
(37), a Cable Trap (44), and the Leg Press Arm
(22) from the indicated side. Be sure the Cable
Trap is oriented as shown.
29
30
31
80
74
Wrap the Press Cable (80) around another 3 1/2”
Pulley (37). Attach the Pulley and a Cable Trap
(44) to the 3/8” x 5” Bolt (61) with a 3/8” Nylon
Locknut (74). Be sure the Cable Trap is turned
to hold the Cable in the groove of the Pulley.
Do not tighten the Nylon Locknut yet.
37
44
37
44
22
61
30. Wrap the Press Cable (80) around a “V”-Pulley
(38). Attach the Pulley and a Long Cable Trap
(50) to the indicated hole in the Press Seat
Frame (12), using a 3/8” x 4 1/4” Bolt (104), a
3/8” Washer (75) and a 3/8” Nylon Locknut (74).
Be sure the Cable Trap is turned to hold the
Cable in the groove of the Pulley.
104
12
75
50
38
74
80
31. Wrap the Press Cable (80) around the indicated
3 1/2” Pulley (37) on the Leg Press Arm (22).
Make sure the Cable Trap is turned to hold the
Cable in the groove of the Pulley. Tighten the
3/8” Nylon Locknut (not shown) used in step 29.
80
44
22
37
32. Wrap the Press Cable (80) around a 3 1/2” Pulley
(37). Attach the Pulley and a Cable Trap (44) to
the Support Brace (7) with a 3/8” x 3 3/4” Bolt
(62), a 3/8” Washer (75), and a 3/8” Nylon
Locknut (74). Make sure the Cable Trap is
turned to hold the Cable in the groove of the
Pulley.
32
7
44
80
74
75
37
62
14
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33. Wrap the Press Cable (80) around a 3 1/2” Pulley
(37). Attach the Pulley to the bracket on the Press
Top Frame (13) with a 3/8” x 2” Bolt (79) and a
3/8” Nylon Locknut (74).
33
13
74
37
Bracket
80
79
34. Wrap the Press Cable (80) around a 3 1/2” Pulley
(37). Attach the Pulley to the bracket on the Top
Frame (5) with a 3/8” x 2” Bolt (79) and a 3/8”
Nylon Locknut (74).
34
74
5
Bracket
79
37
80
35. Remove the 3/8” x 2 1/2” Bolt (78) from the top of
the indicated Weight Carriage (28). Attach the end
of the Press Cable (80) to the Weight Carriage
with the Bolt (78) and 3/8” Nylon Locknut (74).
35
80
74
78
28
36. Identify the Butterfly Cable (81); it is approximate-
ly 52” long and it has a loop on both ends.
36
Secure a 3/8” x 1” Bolt (97) to the bracket on the
Left Butterfly Arm (17) with a 3/8” Nylon Jamnut
(88). Attach one end of the Butterfly Cable (81) to
the Bolt with another 3/8” Nylon Jamnut. Do not
tighten the second Nylon Jamnut; the Cable
must be able to pivot freely.
97
Bracket
81
88
17
15
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37. Wrap the Butterfly Cable (81) around a “V”-Pulley
(38). Attach the Pulley and a Long Cable Trap
(50) to the indicated side of the bracket on the
Butterfly Upright (4) with a 3/8” x 2 1/2” Bolt (78)
and a 3/8” Nylon Locknut (74). Be sure the Long
Cable Trap is turned to hold the Cable in the
groove of the Pulley.
37
38
50
78
81
Bracket
74
4
38. Remove the two 3 1/2” Pulleys (37) and two
Cable Traps (44) from the set of Pulley Plates
(43). Wrap the Butterfly Cable (81) around the
Pulley. Reattach a Pulley and a Cable Trap to the
top set of holes in the Pulley Plates with a 3/8” x
2” Bolt (79) and a 3/8” Nylon Locknut (74). Be
sure the Cable Trap is turned to hold the
Cable in the groove of the Pulley.
38
81
37
74
44
43
79
39. Wrap the Butterfly Cable (81) around a “V”-Pulley
(38). Attach the Pulley and a Long Cable Trap
(50) to the other side of the bracket on the
Butterfly Upright (4) with a 3/8” x 2 1/2” Bolt (78)
and a 3/8” Nylon Locknut (74). Be sure the Long
Cable Trap is turned to hold the Cable in the
groove of the Pulley.
39
78
81
38
50
74
4
40. Secure a 3/8” x 1” Bolt (97) to the bracket on the
Right Butterfly Arm (18) with a 3/8” Nylon Jamnut
(88). Attach the end of the Butterfly Cable (81) to
the Bolt with another 3/8” Nylon Jamnut. Do not
tighten the second Nylon Jamnut; the Cable
must be able to pivot freely.
40
97
Bracket
81
88
18
16
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41. Identify the Ab Cable (83); it is approximately
220.25” long and it has a ball on one end and a
loop on the other.
41
Large tabs
must be on
this side
91
75
Wrap the Ab Cable (83) around a 3 1/2” Pulley
(37). Place two Pulley Covers (49) over the
Pulley; make sure that the large tabs are in the
position shown. Attach the Pulley and Pulley
Covers to the Butterfly Upright (4) with a 3/8” x 4”
Bolt (91), two 3/8” Washers (75), and a 3/8” Nylon
Locknut (74). Be sure that the Cable is between
the Pulley and the rod on the Upright, and that
the ball is on the side shown.
49
37
Rod
83
75
Ball
49
74
4
42. Remove the two 3 1/2” Pulleys (37) from the
Double U-bracket (42). Wrap the Ab Cable (83)
around a Pulley. Reattach the Pulley to the
Double U-bracket with the 3/8” x 2” Bolt (79) and
3/8” Nylon Locknut (74).
42
83
37
74
79
42
43. Wrap the Ab Cable (83) around the other 3 1/2”
Pulley (37) removed in step 38. Reattach the
Pulley and Cable Trap (44) to the bottom set of
holes in the Pulley Plates (43) with the 3/8” x 2”
Bolt (79) and the 3/8” Nylon Locknut (74). Be
sure the Cable Trap is turned to hold the
Cable in the groove of the Pulley.
43
43
74
44
79
83
37
44. Wrap the Ab Cable (83) around a 3 1/2” Pulley
(37). Attach the Pulley and a Cable Trap (44) to
the Butterfly Base (1) with a 3/8” x 1 3/4” Bolt
(103) and a 3/8” Nylon Jamnut (88). Make sure
the Cable Trap is oriented as shown.
44
83
103
1
44
37
88
17
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45. Wrap the Ab Cable (83) around a 3 1/2” Pulley
(37). Attach the Pulley to the bracket on the
Butterfly Top Frame (19) with a 3/8” x 2” Bolt (79)
and a 3/8” Nylon Locknut (74).
45
19
Bracket
79
74
37
83
46. Wrap the Ab Cable (83) around a 3 1/2” Pulley
(37). Attach the Pulley to the bracket on the Top
Frame (5) with a 3/8” x 2” Bolt (79) and a 3/8”
Nylon Locknut (74).
46
5
74
83
79
37
Bracket
47. Attach the end of the Ab Cable (83) to the indicat-
ed Weight Carriage (28) with a 3/8” x 2 1/2” Bolt
(78) and a 3/8” Nylon Locknut (74).
47
83
78
28
74
48. Identify the Leg Lever Cable (82). It is approxi-
mately 142.75” long and it has a ball on one end
and a loop on the other.
48
Route the loop end of the Leg Lever Cable (82)
through the cage on the Butterfly Base (1) and
under a 3 1/2” Pulley (37). Attach the Pulley and
a Cable Trap (44) to the bracket on the Butterfly
Base with a 3/8” x 2” Bolt (79) and a 3/8” Nylon
Locknut (74). Make sure the Cable Trap is ori-
ented to hold the Cable in the groove of the
Pulley.
79
37
Bracket
44
Cage
1
82
74
18
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49. Wrap the Leg Press Cable (82) around a 3 1/2”
Pulley (37). Attach the Pulley and a Cable Trap
(44) to the Butterfly Upright (4) with a 3/8” x 5”
Bolt (61) and a 3/8” Nylon Locknut (74). Do not
tighten the Nylon Locknut yet. Be sure that
the Cable Trap is turned to hold the Cable in
the groove of the Pulley.
49
61
37
82
44
74
4
50. Wrap the Leg Press Cable (82) around the 3 1/2”
Pulley (37) removed in step 42. Attach the Pulley
to the bottom of the Double U-bracket (42) with
the 3/8” x 2” Bolt (79) and the 3/8” Nylon Locknut
(74).
50
74
79
42
37
82
51. Wrap the Leg Press Cable (82) around a 3 1/2”
Pulley (37). Attach the Pulley and a Cable Trap
(44) to the 3/8” x 5” Bolt (61) in the Butterfly
Upright (4) with a 3/8” Nylon Locknut (74). Be
sure that the Cable Trap is turned to hold the
Cable in the groove of the Pulley.
51
4
82
61
44
37
74
52. Attach the end of the Leg Press Cable (82) to the
Leg Lever (8) with a 5/16” x 2 1/2” Bolt (61), two
5/16” Washers (66), and a 5/16” Nylon Jamnut
(105). Do not overtighten the Nylon Jamnut;
the Cable must be able to pivot freely.
52
8
105
66
66
82
63
19
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53
Seat Assembly
25
53. Locate and open the parts bag labeled “SEAT
ASSEMBLY.”
93
57
Press a 1 1/2” Square Inner Cap (100) into the
bottom of a Seat Bracket (11). Press two 1” x 2”
Inner Caps (70) into the ends of the Seat Bracket.
90
70
11
84
106
100
10
70
Insert a 1/4” x 1 3/4” Carriage Bolt (93) into the
center hole of a Support Plate (57). Attach the
Support Plate to a Seat (25) with two 1/4” x 3/4”
Screws (90). Attach the Seat to the Seat Bracket
(11) with the Carriage Bolt, a 1/4” Washer (84),
and a 1/4” Nylon Locknut (106). Attach the other
end the Seat to the Seat Bracket with 1/4” x
1 3/4” Screw (98) and a 1/4” Washer (84).
84
98
Loosen the Adjustment Knob (not shown) by turn-
ing it counterclockwise, and pull it out as far as
possible. Insert the Seat Bracket (11) into the
Butterfly Seat Frame (10) and align an adjustment
hole with the Adjustment Knob. Snap the Knob into
the adjustment hole and turn it clockwise until tight.
54
94
54. Attach the Butterfly Backrest (53) to the Butterfly
Upright (4) with two 1/4” x 2 3/4” Screws (94) and
two 1/4” Washers (84).
84
4
53
84
94
55. Press a 1 1/2” Square Inner Cap (100) into the
bottom of a Seat Bracket (11). Press two 1” x 2”
Inner Caps (70) into the ends of the Seat Bracket.
55
25
Insert a 1/4” x 1 3/4” Carriage Bolt (93) into the
center hole of a Support Plate (57). Attach the
Support Plate to a Seat (25) with two 1/4” x 3/4”
Screws (90). Attach the Seat to the Seat Bracket
(11) with the Carriage Bolt, a 1/4” Washer (84),
and a 1/4” Nylon Locknut (106). Attach the other
end the Seat to the Seat Bracket with 1/4” x
1 3/4” Screw (98) and a 1/4” Washer (84).
93
57
90
70
11
84
106
70
Loosen the Adjustment Knob (51) by turning it
counterclockwise, and pull it out as far as possi-
ble. Insert the Seat Bracket (11) into the Press
Seat Frame (12) and align an adjustment hole
with the Adjustment Knob. Snap the Knob into the
adjustment hole and turn it clockwise until tight.
100
84
98
12
51
20
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56. Press a 1 1/2” Square Inner Cap (100) into the
back of the Backrest Bracket (21). Press two 1” x
2” Inner Caps (70) into the top and bottom of the
Backrest Bracket.
56
98
70
84
100
Insert a 1/4” x 1 3/4” Carriage Bolt (93) into the
center hole of a Support Plate (57). Attach the
Support Plate to Press Backrest (20) with two
1/4” x 3/4” Screws (90). Attach the Backrest to
the Backrest Bracket (21) with the Carriage Bolt,
a 1/4” Washer (84), and a 1/4” Nylon Locknut
(106). Attach the top of the Backrest to the
Backrest Bracket with 1/4” x 1 3/4” Screw (98)
and a 1/4” Washer (84).
21
90
51
106
84
57
20
6
90
93
70
Loosen the Adjustment Knob (51) by turning it
counterclockwise, and pull it out as far as possi-
ble. Insert the Backrest Bracket (21) into the
Press Upright (6) and align an adjustment hole
with the the Adjustment Knob. Snap the Knob into
the adjustment hole and turn it clockwise until
tight.
57
46
57. Press a 1 3/4” Square Inner Cap (60) into the
back of the Adjustment Tube (23).
23
60
66
64
Attach the Adjustment Tube (23) to the Press
Plate (24) with a 5/16” x 2 1/2” Bolt (63), two
5/16” Washers (66), and a 5/16” Nylon Locknut
(64).
66
63
Attach the Adjustment Tube (23) to the Leg Press
Arm (22) with the Press Pin (46).
24
22
58. Press four 3/4” Round Inner Caps (73) into the
ends of the Long and Short Pad Tube (39, 40).
58
73
41
Insert the Long Pad Tube (39) into the welded
tube on the Butterfly Front Leg (9). Slide two
Foam Pads (41) onto the ends of the Pad Tube.
Welded
Tube
73
Insert the Short Pad Tube (40) into the hole in the
Leg Lever (8). Slide two Foam Pads (41) onto the
ends of the Pad Tube
39
41
73
41
8
40
9
41
73
21
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59. Attach the Curl Pad (36) to the Curl Post (35) with
two 1/4” x 3/4” Bolts (90).
59
36
90
90
35
60. Make sure that all parts have been properly tightened before using the weight system. The use of the
remaining parts will be explained in ADJUSTMENTS, beginning on page 23 of this manual.
Before using the weight system, pull each cable a few times to make sure that the cables move smoothly
over the pulleys. If one of the cables does not move smoothly, find and correct the problem. Refer to the
CABLE DIAGRAMS on page 26 for correct cable routing. IMPORTANT: If the cables are not properly
installed, they may be damaged when heavy weight is used. If there is any slack in the cables, you
will need to remove the slack by tightening the cables. See TROUBLE-SHOOTING AND MAINTE-
NANCE on page 27.
22
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ADJUSTMENTS
The weight system is designed to be used with your own weight set (not included). The steps below explain how the
weight system can be adjusted. Refer to the accompanying exercise guide to see the correct form for several exer-
cise.
Make sure all parts are properly tightened each time you use the weight system. Replace any worn parts immediate-
ly. The weight system can be cleaned with a damp cloth and a mild, non-abrasive detergent. Do not use solvents.
ADJUSTING THE SEAT
To adjust the height of the Seat (25) on the Press
Seat Frame (12), loosen the Adjustment Knob (51) by
turning it counterclockwise, and pull it out as far as
possible. Move the Seat to the desired height and
snap the Knob into an adjustment hole in the Seat
Bracket (11). Turn the Adjustment Knob clockwise
until tight.
25
11
The Seat (not shown) in the Butterfly Seat Frame (not
shown) can be adjusted in the same way.
51
12
ADJUSTING THE PRESS BACKREST
6
To adjust the Press Backrest (20) loosen the
Adjustment Knob (51) by turning it counterclockwise,
and pull it out as far as possible. Move the Backrest
to the desired position and snap the Knob into an
adjustment hole in the Backrest Bracket (not shown).
Turn the Adjustment Knob clockwise until tight.
20
51
ADJUSTING THE PRESS PLATE
46
23
Bracket
To adjust the position of the Press Plate (24), pull out
the Press Pin (46) and slide the Adjustment Tube (23)
to the desired position in the bracket on the Leg
Press Arm (22). Line up one of the adjustment holes
in the Adjustment Tube with the hole in the bracket
and re-insert the Press Pin.
24
22
23
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ATTACHING THE CURL PAD
To use the Curl Pad (36), remove the 2” Square Inner
Cap (59) and insert the Curl Post (35) into the
Butterfly Front Leg (9). Secure the Curl Post with the
Curl Adjustment Knob (52).
36
Replace the 2” Square Inner Cap (59) in the Butterfly
Front Leg (9) when performing exercising that does
not require the Curl Pad (36). Store the Curl Pad
away from the weight system when it is not being
used.
35
52
59
9
ATTACHING THE LAT BAR
Attach the Lat Bar (68) to the Leg Lever Cable (82) or
Press Cable (not shown) with a Cable Clip (47). For
some exercises, the Chain (45) should be attached
between the Lat Bar and the Cable with two Cable
Clips. Adjust the length of the Chain between the
Cable and the Lat Bar so that the Lat Bar is in the
correct starting position for the exercise to be
performed.
47
45
47
The Strap (48) can be attached to the Leg Lever
Cable (82), Press Cable (not shown), or Ab Cable
(not shown) in the same manner.
68
48
USING THE WEIGHT CARRIAGE
To use standard weights (not included), slide the
desired amount of weight onto the weight tube on a
Weight Carriage (28). Secure the weight with two
Locking Pins (31).
27
31
To use Olympic weights (not included), slide a Weight
Sleeve onto each side of the weight tube on the
Weight Carriage (28). Next, slide the desired amount
of weight onto the Weight Sleeves. Secure the weight
with two Locking Pins (31).
28
Weight
Tube
WARNING:Always place the
same amount of weight on each side of the
Weight Carriage (28).
24
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WEIGHT RESISTANCE CHART
The chart below shows the approximate weight resistance at each exercise station. Note: The actual resis-
tance at each station may vary due to differences in individual weight plates as well as friction between
the cables, pulleys, and weight guides. The weight resistance listed for the Butterfly Arm is for each
arm.
Weight
(lbs.)
High
Pulley
(lbs.)
Arm
Press
(lbs.)
Leg
Press
(lbs.)
Butterfly
Arm
(lbs.)*
Leg Lever
(lbs.)
Low Arm
Pulley
(lbs.)
20
40
30
60
23
45
44
9
26
52
22
45
88
18
27
36
45
55
64
73
82
92
60
90
68
132
176
220
264
308
352
396
440
78
67
80
120
150
180
210
240
270
300
90
104
130
156
182
208
234
260
90
100
120
140
160
180
200
113
135
158
180
205
225
112
135
157
180
202
225
25
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CABLE DIAGRAMS
The cable diagrams below show the proper routing of the Butterfly Cable (81), the Ab Cable (83), the Leg Lever
Cable (82) and the Press Cable (80). The numbers show the correct route for each Cable. Make sure that the
Cables are routed correctly, that the pulleys move smoothly, and that the cable traps do not touch or
bind the Cables. Incorrect cable routing can damage the weight system.
Butterfly Cable (81)
4
5
13
6
5
2
2
12
3
1
1
3
1
2
6
5
4
Ab Cable (83)
3
7
4
14
3
Press Cable (80)
9
11
8
7
2
Leg Lever Cable (82)
10
Cable ID Chart
5
(81) 52”
1
(82) 142.75”
(83) 220.25”
4
(80) 387.25”
26
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TROUBLE-SHOOTING AND MAINTENANCE
TIGHTENING THE CABLES
If a cable slips off the pulleys often, the cable may have become twisted. Remove the cable and re-install
it. If the cables need to be replaced, see ORDERING REPLACEMENT PARTS on the back cover of this manual.
The type of cable used on the weight system can stretch slightly when it is first used. If there is slack in the
cables before resistance is felt, the cables should be tightened. Slack can be removed from the cables in two
different ways:
The Pulley Plates (43) have several sets of adjust-
ment holes. By moving one or both 3 1/2” Pulleys
(37) to a different set of holes, you will tighten the
cables.
43
44
37
74
To move a 3 1/2” Pulley (37), remove the 3/8” Nylon
Locknut (74) and the 3/8” x 2” Bolt (79) from the
Pulley, Cable Trap (44) and Pulley Plates (43). Re-
attach the Pulley and Cable Trap to the appropriate
adjustment hole in the Pulley Plates with the Bolt and
Nylon Locknut. Note: Begin by moving one Pulley
to the second adjustment hole. If the cables are
still too loose, move the same Pulley to the third
hole. If additional adjustment is needed, move the
other Pulley until the cables are tight.
Adjustment
Holes
79
79
74
44
37
43
Slack can be removed form the Press Cable (80) by
moving the indicated “V”-Pulley (38) to one of the four
free holes in the Press Seat Frame (12). Remove the
3/8” x 4 1/4” Bolt (104), 3/8” Washer (75), and 3/8”
Nylon Locknut (74) from the Press Seat Frame,
Pulley, and Long Cable Trap (50). Reattach the Pulley
and Long Cable Trap to the next hole with the Bolt,
Washer, and Nylon Locknut. Move the Pulley away
from the Leg Press Arm (22) one hole at a time, until
the Cable is tight.
104
75
12
50
80
38
74
Be sure the Long Cable Trap (50) is positioned to
hold the Press Cable (80) in the groove of the “V”-
Pulley (38).
22
27
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The model number and serial number of your WEIDER® PRO
9950 weight system are listed on a decal attached to the frame.
See the front cover of this manual to find the location of the decal.
Model No. 831.159530
QUESTIONS?
All replacement parts are available for immediate purchase or
special order when you visit your nearest SEARS Service Center.
To request service or to order parts by telephone, call the toll-free
numbers listed at the left.
If you find that:
• you need help assembling or
operating the WEIDER® PRO 9950
weight system
When requesting help or service, or ordering parts, please be pre-
pared to provide the following information:
• a part is missing
• The MODEL NUMBER of the product (831.159530)
• or you need to schedule repair
service
• The NAME of the product (WEIDER® PRO 9950 weight system)
call our toll-free HELPLINE
• The KEY NUMBER and DESCRIPTION of the PART (see the
PART LIST/EXPLODED DRAWING in the center of this manual).
1-800-736-6879
Monday–Saturday, 7 am–7 pm
Central Time (excluding holidays)
REPLACEMENT
PARTS
If parts become worn and need to
be replaced, call the following toll-
free number
1-800-FON-PART
(1-800-366-7278)
SEARS, ROEBUCK AND CO., HOFFMAN ESTATES, IL 60179
FULL 90 DAY WARRANTY
For 90 days from the date of purchase, if failure occurs due to defect in material or workmanship in this
SEARS WEIGHT SYSTEM EXERCISER, contact the nearest SEARS Service Center throughout the
United States and SEARS will repair or replace the WEIGHT SYSTEM EXERCISER, free of charge.
This warranty does not apply when the WEIGHT SYSTEM EXERCISER is used commercially or for
rental purposes.
This warranty gives you specific legal rights, and you may also have other rights which vary from state
to state.
SEARS, ROEBUCK AND CO., DEPT. 817WA, HOFFMAN ESTATES, IL 60179
Part No. 177796 R1001A
Printed in Canada © 2001 Sears, Roebuck and Co.
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REMOVE THIS PART IDENTIFICATION
CHART FROM THE MANUAL
This chart is provided to help you identify the small parts used in assembly. The number in parenthesis below
each part refers to the key number of the part from the PART LIST in the center of this manual. Important:
Some parts may have been pre-assembled for shipping purposes. If you cannot find a part in the parts
bags, check to see if it has been pre-assembled.
Note: Assembly is divided into four stages: 1) frame assembly; 2) arm
assembly; 3) cable assembly; and 4) seat assembly. The hardware for
each assembly stage is packaged separately. Wait until you begin each
stage to open that parts bag.
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1 3/4" Square Inner Cap (60)
2" Square Inner Cap (59)
1" x 2” Inner Cap (70)
1 1/2" Square Inner Cap (100)
1 1/2" Round Inner Cap (67)
1" CoverCap (86)
3/4" Round Inner Cap (73)
1" Inner Cap (32)
1” Retainer (85)
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PART LIST—Model No. 831.159530
R1001A
1/4" x 3/4" Screw (90)
1/2" Nylon Locknut (95)
3/8" x 1" Bolt (97)
1/4" x 1 3/4" Screw (98)
Bumper Screw (72)
3/8" Nylon Locknut (74)
3/8" x 1 3/4" Bolt (103)
3/8" Nylon Jamnut (88)
5/16" Nylon Locknut (64)
1/4" x 1 3/4" Carriage Bolt (93)
3/8" x 2" Bolt (79)
5/16" x 2 1/2" Bolt (63)
3/8" x 2 1/2" Bolt (78)
1/4" x 2 3/4" Screw (94)
5/16" Nylon Jamnut (105)
1/4" Nylon Locknut (106)
3/8" x 5" Bolt (61)
3/8" x 6" Bolt (89)
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5/16" x 2 1/2" Carriage Bolt (54)
3/8" x 2 1/2" Carriage Bolt (76)
3/8" Washer (75)
5/16" x 2 3/4" Bolt (55)
3/8" x 2 3/4" Bolt (58)
3/8" SAE Washer (102)
5/16" Washer (66)
1/4" Washer (84)
3/8" x 3 1/4" Bolt (101)
3/8" x 3 1/2" Bolt (65)
1/2" x 3 1/2" Bolt (96)
3/8" x 3 3/4" Bolt (62)
3/8" x 4" Bolt (91)
3/8" x 4 1/4" Bolt (104)
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REMOVE THIS PART LIST/EXPLODED
DRAWING FROM THE MANUAL
81
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PART LIST—Model No. 831.159530
R1001A
Key No. Qty.
Description
Key No. Qty.
Description
1
2
3
4
5
6
7
8
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
4
2
4
8
4
6
4
5
1
1
22
4
1
1
4
1
2
12
1
1
3
1
2
3
3
1
1
10
17
Butterfly Base
Center Base
Press Base
Butterfly Upright
Top Frame
Press Upright
Support Brace
Leg Lever
Butterfly Front Leg
Butterfly Seat Frame
Seat Bracket
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
#
2
3
4
12
9
2
4
6
32
3
10
2
1
4
6
2
2
4
38
10
2
6
6
9
1
1
1
1
8
4
2
4
6
4
8
2
1
3
2
1
1
2
3
8
4
1
4
1
1
1
3
1
1
Weight Bumper
Support Plate
3/8" x 2 3/4" Bolt
2" Square Inner Cap
1 3/4" Square Inner Cap
3/8" x 5" Bolt
3/8" x 3 3/4" Bolt
5/16" x 2 1/2" Bolt
5/16" Nylon Locknut
3/8" x 3 1/2" Bolt
5/16" Washer
1 1/2" Round Inner Cap
Lat Bar
1/2” Brass Bushing
1" x 2” Inner Cap
Bumper
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
Press Seat Frame
Press Top Frame
Press Frame
Left Press Arm
Right Press Arm
Left Butterfly Arm
Right Butterfly Arm
Butterfly Top Frame
Press Backrest
Backrest Bracket
Leg Press Arm
Adjustment Tube
Press Plate
Bumper Screw
3/4" Round Inner Cap
3/8" Nylon Locknut
3/8" Washer
3/8" x 2 1/2" Carriage Bolt
3/8” Brass Bushing
3/8" x 2 1/2" Bolt
3/8" x 2" Bolt
Press Cable
Butterfly Cable
Leg Lever Cable
Ab Cable
1/4” Washer
1" Retainer
1" Cover Cap
1" Brass Bushing
3/8” Nylon Jamnut
3/8” x 6” Bolt
1/4" x 3/4" Screw
3/8” x 4” Bolt
3/8” x 9” Bolt
1/4” x 1 3/4” Carriage Bolt
1/4” x 2 3/4” Screw
1/2” Nylon Locknut
1/2” x 3 1/2” Bolt
3/8” x 1” Bolt
Seat
Short Support Plate
Weight Sleeve
Weight Carriage
Carriage Bushing
Weight Sleeve Bushing
Locking Pin
1” Inner Cap
Weight Guide
Long Support Plate
Curl Post
Curl Pad
3 1/2” Pulley
“V”-Pulley
Long Pad Tube
Short Pad Tube
Foam Pad
Double U-bracket
Pulley Plate
Cable Trap
Chain
Press Pin
Cable Clip
Strap
Pulley Cover
Long Cable Trap
Adjustment Knob
Curl Adjustment Knob
Butterfly Backrest
5/16" x 2 1/2" Carriage Bolt
5/16" x 2 3/4" Bolt
1/4” x 1 3/4” Screw
Handgrip
1 1/2” Square Inner Cap
3/8” x 3 1/4” Bolt
3/8” SAE Washer
3/8” x 1 3/4” Bolt
3/8” x 4 1/4” Bolt
5/16” Nylon Jamnut
1/4” Nylon Locknut
Pulley Support Plate
User’s Manual
#
1
Exercise Guide
Note: “#” indicates a non-illustrated part. Specifications are subject to change without notice. See the back cover
of this manual for information about ordering replacement parts.
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EXPLODED DRAWING—Model No. 831.159530
R1001A
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