Weider 831.159823 User Manual
USER'S MANUAL
CAUTION
Read all precautions and instructions in this manual before using
this equipment. Save this manual
for future reference.
Model No. 831.159823
Serial No.
Write the serial number in the
space above for reference.
Serial Number Decal (under seat)
Visit our website at
www.weiderfitness.com
new products, prizes,
fitness tips, and much more!
SEARS, ROEBUCK AND CO.
HOFFMAN ESTATES, IL 60179
2
IMPORTANT PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
BEFORE YOU BEGIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
WEIGHT RESISTANCE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
CABLE DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
EXERCISE GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
ORDERING REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover
FULL 90 DAY WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover
Note: APART IDENTIFICATION CHART and a PART LIST/EXPLODED DRAWING are attached in the center of
this manual. Remove the PART IDENTIFICATION CHART and the PART LIST/EXPLODED DRAWING before
beginning assembly.
TABLE OF CONTENTS
3
1. Read all instructions in this manual and in
the accompanying literature before using the
weight system. Use the weight system only
as described in this manual.
2. It is the responsibility of the owner to ensure
that all users of the weight system are adequately informed of all precautions.
3. The weight system is intended for home use
only. Do not use the weight system in a commercial, rental, or institutional setting.
4. Use the weight system only on a level surface. Cover the floor or carpet beneath the
weight system to protect the floor.
5. Make sure all parts are properly tightened
each time the weight system is used.
Replace any worn parts immediately.
6. Keep children under the age of 12 and pets
away from the weight system at all times.
7. Keep hands and feet away from moving parts.
8. Always wear athletic shoes for foot protection when using the weight system.
9. The weight system is designed to support a
maximum user weight of 300 pounds.
10. Never release the press arm, butterfly arms,
leg lever, leg press base, lat bar, ab strap, or
handle while weights are raised; the weights
will fall with great force.
11. Make sure that the cables remain on the pulleys at all times. If the cables bind while you
are exercising, stop immediately and make
sure that the cables are on all of the pulleys.
12. Always stand on the foot plate when performing an exercise that could cause the
weight system to tip.
13. Always disconnect the lat bar from the
weight system when performing an exercise
that does not use the lat bar.
14. If you feel pain or dizziness at any time while
exercising, stop immediately and begin cooling down.
15. The warning decals
shown here have been
placed on the weight
system in the locations
shown on page 4. If a
decal is missing or
illegible, please call
our toll-free HELPLINE
at 1-800-736-6879,
Monday through
Saturday, 7 a.m. until
7 p.m. Central Time, to
order a free replacement decal. Place the
decal on the weight
system in the location shown.
WARNING:To reduce the risk of serious injury, read the following important precau-
tions before using the weight system.
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.
Keep hands and
fingers clear of
this area.
IMPORTANT PRECAUTIONS
Decal 1
Decal 2
4
BEFORE YOU BEGIN
ASSEMBLED
DIMENSIONS:
Height: 77 in.
Width: 81 in.
Length: 59 in.
Foot Plate
Low Pulley
Station
Ab Pulley
Station
High Pulley Station
Lat Bar
Leg Lever
Butterfly Arm
/Press Arm
Weight
Seat
Seat
Backrest
Backrest
Leg Press
Plate
Thank you for selecting the versatile WEIDER®PRO
4100 weight system. The PRO 4100 weight system
offers a 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 weight system will help you to achieve the
results you want.
For your benefit, read this manual carefully before
using the weight system. If you 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 product model number
and serial number before calling. The model number is
831.159823. The serial number can be found on a
decal attached to the weight system (see the front
cover of this manual).
Before reading further, please review the drawing
below and familiarize yourself with the parts that are
labeled.
Warning
Decal 1
Warning Decal 2
(One on each side
of the right upright.)
Note: The terms “right side” and “left side” are determined relative to a person facing away from the weight system; they do
not correspond to right and left in the pictures in the manual.
Right Side
Left Side
26
5
Before beginning assembly, carefully read the
following information and instructions:
• Assembly requires two people.
• Place all parts 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.
• As you assemble the weight system, make sure
all parts are oriented as shown in the drawings.
• For help identifying small parts, use the P
ART
IDENTIFICA
TION CHART.
An Allen wrench (included) and the following
tools (not included) are required for assembly:
• two adjustable wrenches
• one rubber mallet
• one standard screwdriver
• one Phillips screwdriver
• lubricant, such as grease or petroleum jelly,
and soapy water.
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.
Make Things Easier for Yourself
Everything in this manual is designed to ensure
that the weight system can be assembled successfully by anyone. However, it is important to
realize that the versatile weight system has
many parts and that the assembly process will
take time. Most people find that by setting aside
plenty of time, assembly will go smoothly.
ASSEMBLY
1
33
33
60
67
68
98
1
71
60
67
28
26
26
57
57
1. Before beginning assembly, be sure that you
have read and understand the information in
the box above.
Attach the Base Cap (28) to the Right Base (1)
with two #8 x 3/4” Screws (68).
Attach the Center Base (67) to the Right Base (1)
with two 5/16” x 2 3/4” Bolts (60), two 5/16”
Washers (26), and two 5/16” Nylon Locknuts (71).
Insert four 5/16” x 2 1/2” Carriage Bolts (57) up
into the Right Base (1).
FRAME ASSEMBLY
2. Press two 2” Square Inner Caps (33) into the
ends of the Left Base (2). Attach the Rubber
Bumper (98) to the Left Base with a #8 x 3/4”
Screw (68).
Insert four 5/16” x 2 1/2” Carriage Bolts (57) up
into the Left Base (2).
Attach the Left Base (2) to the Right Base (1) and
Center Base (67) with three 5/16” x 2 3/4” Bolts
(60), three 5/16” Washers (26), and three 5/16”
Nylon Locknuts (71).
2
1
2
60
71
57
68
26
57
6
4. Press a 2” x 2 1/2” Inner Cap (22) into the top of
the Right Leg (73).
Attach the Right Upright (6) to the Right Base (1)
with the two indicated 5/16” x 2 1/2” Carriage
Bolts (57) and two 5/16” Nylon Locknuts (71).
Attach the Right Leg (73) to the Right Base (1)
with the two indicated 5/16” x 2 1/2” Carriage
Bolts (57) and two 5/16” Nylon Locknuts (71).
Do not tighten the 5/16” Nylon Locknuts (71)
yet.
3. Attach the Base Plate (37) to the Left Base (2)
with a 3/8” x 5 1/2” Bolt (58) and a 3/8” Nylon
Locknut (70).
Attach the Left Upright (7) to the Left Base (2)
with the two indicated 5/16” x 2 1/2” Carriage
Bolts (57) and two 5/16” Nylon Locknuts (71).
Attach the Left Leg (36) to the Left Base (2) with
the two indicated 5/16” x 2 1/2” Carriage Bolts
(57) and two 5/16” Nylon Locknuts (71). Be sure
the large upper hole in the Left Leg is on the
side shown.
Do not tighten the 5/16” Nylon Locknuts (71)
yet.
3
4
2
57
71
6
1
73
22
36
Large
Hole
7
71
57
57
37
70
58
71
71
71
71
71
71
57
7
7. Set two Weight Bumpers (83) over the indicated
holes in the Center Base (67). Insert the two
Weight Guides (20) into the holes. Attach the
Weight Guides to the Center Base with two 5/16”
x 2 3/4” Bolts (60), four 5/16” Washers (26), and
two 5/16” Nylon Locknuts (71).
26
26
26
26
73
71
6
5
59
59
71
5
71
71
83
83
26
26
26
60
26
67
20
7
6. Press a 2” Square Inner Cap (33) into the end of
the Left Seat Frame (29).
Attach the Left Seat Frame (29) to the Left Leg
(36) with two 5/16” x 2 1/2” Carriage Bolts (57)
and two 5/16” Nylon Locknuts (71).
Attach the Left Seat Frame (29) to the Left
Upright (7) with two 5/16” x 3 1/4” Bolts (59), two
5/16” Washers (26), and two 5/16” Nylon
Locknuts (71).
Do not tighten the 5/16” Nylon Locknuts (71)
yet.
33
26
26
36
71
71
59
29
59
7
71
6
57
5. Attach the Right Seat Frame (5) to the Right Leg
(73) with two 5/16” x 3 1/4” Bolts (59), two 5/16”
Washers (26), and two 5/16” Nylon Locknuts (71).
Attach the Right Seat Frame (5) to the Right
Upright (6) with two 5/16” x 3 1/4” Bolts (59), two
5/16” Washers (26), and two 5/16” Nylon
Locknuts (71).
Do not tighten the 5/16” Nylon Locknuts (71)
yet.
8
10. Press a 2” x 2 1/2” Inner Cap (22) into the end of
the Right Top Frame (8).
Attach the Right Top Frame (8) to the Right
Upright (6) with two 5/16” x 3 1/4” Bolts (59), a
Support Plate (21), and two 5/16” Nylon Locknuts
(71).
Attach the Right Top Frame (8) to the Left Top
Frame (3) with two 5/16” x 2 3/4” Bolts (60), two
5/16” Washers (26), and two 5/16” Nylon
Locknuts (71).
Do not tighten the 5/16” Nylon Locknuts (71)
yet.
9. Press two 2” x 2 1/2” Inner Caps (22) into the
ends of the Left Top Frame (3).
Attach the Left Top Frame (3) to the Left Upright
(7) with two 5/16” x 3 1/4” Bolts (59), a Support
Plate (21), and two 5/16” Nylon Locknuts (71). Do
not tighten the Locknuts yet.
8. Slide the eight Weights (72) onto the Weight
Guides (20) with the pin grooves on the side
shown.
Press the Weight Tube Bumper (32) into the bottom of the Weight Tube (82). Insert the Weight
Tube into the center hole in the stack of Weights
(72). Be sure the Weight Tube is oriented as
shown.
Lubricate the indicated holes in the Top Weight
(74). Slide the Top Weight onto the Weight
Guides (20), with the pin groove on the bottom.
72
32
74
20
82
8
Lubricate
Pin
Groove
Holes
22
71
71
59
3
21
22
7
9
6
59
22
71
71
71
3
26
60
8
21
10
9
13. Lubricate a 3/8” x 2” Bolt (62) with grease. Attach
the Pivot Bracket (48) to the Right Butterfly Arm
(11) with the Bolt and a 3/8” Nylon Jamnut (50).
Do not overtighten the Locknut; the Pivot
Bracket must be able to pivot easily.
Press a 1 1/2” x 2” Inner Cap (23) into the indicated end of the Right Butterfly Arm (11). Wet the
bottom end of the Arm with soapy water. Slide a
Large Foam Pad (19) onto the Arm.
Slide a Foam Grip (76) onto a Press Handle (12).
Press a 1” Round Inner Cap (24) into the end of
the Handle. Attach the Handle to the Right
Butterfly Arm (11) with two 5/16” x 3/4” Button
Head Screws (64) and two Nut Clips (99).
Slide the Large Foam Pad (19) down so that the
bottom of the Foam Pad is even with the bottom
of the Right Butterfly Arm (11).
Repeat this step with the Left Butterfly Arm
(10).
11. Press the two Weight Guide Bushings (44) into
the Center Top Frame (14). Slide the Center Top
Frame onto the Weight Guides (20).
Attach the Center Top Frame (14) to the Right
Top Frame (8) with two 5/16” x 2 3/4” Bolts (60),
two 5/16” Washers (26), and two 5/16” Nylon
Locknuts (71).
Attach the Center Top Frame (14) to the Left Top
Frame (3) with two 5/16” x 2 3/4” Bolts (60), two
5/16” Washers (26), and two 5/16” Nylon
Locknuts (71).
Tighten all of the 5/16” Nylon Locknuts (71)
used in steps 3–11.
Note: The remaining hardware from the
“Frame Assembly” bag will be used later.
26
26
26
71
71
14
8
3
44
20
60
60
71
71
11
22
41
70
8
6
9
61
Lubricate
12
64
64
76
19
10
12
11
50
48
62
24
23
99
13
12. Press a 1 1/2” Square Inner Cap (41) into the
Right Upright (6). Press a 2” x 2 1/2” Inner Cap
(22) into the Butterfly Frame (9).
Lubricate a 3/8” x 3” Bolt (61) with grease. Attach
the Butterfly Frame (9) to the Right Top Frame (8)
with the Bolt and a 3/8” Nylon Locknut (70). Do
not overtighten the Locknut; the Butterfly
Frame must be able to pivot easily.
ARM ASSEMBLY
Lubricate
10
16. Press a 2” x 2 1/2” Inner Cap (22) into the top of
the Leg Press Frame (30).
Lubricate a 3/8” x 3” Bolt (61) with grease. Attach
the Leg Press Frame (30) to the Left Base (2)
with the Bolt and a 3/8” Nylon Locknut (70). Do
not overtighten the Locknut; the Leg Press
Frame must be able to pivot easily.
14. Lubricate a 3/8” x 3” Button Head Bolt (97) and
both sides of two Plastic Washers (55) with
grease. Attach the Right Butterfly Arm (11) to the
Butterfly Frame (9) with the Bolt, the two Plastic
Washers, two Butterfly Caps (54), two 3/8”
Washers (75), and a 3/8” Nylon Jamnut (50). Do
not overtighten the Jamnut; the Butterfly Arm
must be able to pivot easily. Be sure the
indented sides of the Plastic Washers fit over
the welded bushing in the Butterfly Arm.
Repeat this step with the Left Butterfly Arm
(10).
9
10
11
97
54
54
55
55
Lubricate
Welded
Bushing
Lubricate
75
75
50
14
23
Lubricate
23
63
50
4
73
25
77
15
2
22
70
61
30
16
15. Attach the Bumper (25) to the Right Leg (73) with
the #10 x 1” Screw (77).
Press two 1 1/2” x 2” Inner Caps (23) into the
ends of the Leg Lever (4).
Lubricate a 3/8” x 2 1/2” Bolt (63) with grease.
Attach the Leg Lever (4) to the Right Leg (73)
with the Bolt and a 3/8” Nylon Jamnut (50). Do
not overtighten the Jamnut; the Leg Lever
must be able to pivot easily.
Lubricate
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