Page 1
CAUTION
Read all precautions and instructions in this manual before using
this equipment. Save this manual
for future reference.
USER’S MANUAL
Serial Number Decal (Under Seat)
SEARS, ROEBUCK AND CO.,
HOFFMAN ESTATES, IL 60179
Model No. 831.150721
Serial No.
Write the serial number in the
space above for future reference.
®
Visit our website at
www.weiderfitness.com
new products, prizes,
fitness tips, and much more!
Page 2
2
IMPORTANT PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
BEFORE YOU BEGIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
PART IDENTIFICATION CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
EXERCISE GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
PART LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
EXPLODED DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
ORDERING REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover
FULL 90 DAY WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover
TABLE OF CONTENTS
WEIDER is a registered trademark of ICON Health & Fitness, Inc.
Page 3
3
1. Read all instructions in this manual before
using the weight bench. Use the weight
bench only as described in this manual.
2. It is the responsibility of the owner to ensure
that all users of the weight bench are adequately informed of all precautions.
3. The weight bench is intended for home use
only. Do not use the weight bench in any
commercial, rental, or institutional setting.
4. Use the weight bench only on a level surface.
Cover the floor beneath the weight bench to
protect the floor.
5. Make sure all parts are properly tightened
each time you use the weight bench. Replace
any worn parts immediately.
6. Keep children under 12 and pets away from
the weight bench at all times.
7. Always be sure there is an equal amount of
weight on each side of your barbell when you
are using it. When adding or removing
weights, always keep some weight on both
ends of the barbell and prevent the barbell
from tipping. Note: Weights and a barbell are
not included with the weight bench.
8. Always exercise with a partner. When you are
performing bench press exercises, your partner should stand behind you to catch the barbell if you cannot complete a repetition.
9. When using the backrest in an inclined position, make sure that the support rod is inserted completely through both uprights, and
that the support rod is turned to the locked
position.
10. Do not use a barbell that is longer than six
feet with the weight bench.
11. The weight bench is designed to support a
maximum of 460 pounds, including the user,
a weight bar, and weights. Do not place more
than 210 pounds, including a weight bar and
weights, on the weight rests. Do not place
more than 130 pounds on the leg lever.
12. When you are using the leg lever, place a barbell with the same amount of weight on the
weight rests to balance the bench.
13. Keep hands and feet away from moving parts.
Always wear athletic shoes for foot protection while exercising.
14. If you feel pain or dizziness while exercising,
stop immediately and begin cooling down.
15. The decals shown below have been placed on
the weight bench. If a decal is missing, or if it
is not legible, 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. Apply the
replacement decal in the location shown.
WARNING: To reduce the risk of serious injury, read the following important precautions
before using the weight bench.
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.
IMPORTANT PRECAUTIONS
Keep hands and
fingers clear of
this area.
Page 4
4
Backrest
Weight Rests
Upright
Support
Rod
Seat
Weight
Tube
Leg Lever
Thank you for selecting the WEIDER®400 weight
bench. The versatile WEIDER®400 is designed to be
used with your own weight set (not included) to develop every major muscle group of the body. Whether
your goal is a shapely figure, dramatic muscle size
and strength, or a healthier cardiovascular system, the
WEIDER
®
400 weight bench will help you to achieve
the specific results you want.
For your benefit, read this manual carefully before
using the WEIDER
®
400 weight bench. 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
831.150721. The serial number can be found on a
decal attached to the weight bench (see the front
cover of this manual).
Before reading further, please look at the drawing
below and familiarize yourself with the parts that are
labeled.
BEFORE YOU BEGIN
Page 5
5
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 on page 14 of the 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.
PART IDENTIFICATION CHART
M8 x 65mm Bolt (20)
M10 Nylon Locknut (27)
M10 x 60mm Bolt (21)
M8 Nylon Locknut (24)
M8 x 55mm Bolt (18)
M8 x 50mm Bolt (29)
M8 x 40mm Carriage Bolt (28)
M6 x 16mm Screw (22)
M6 x 38mm Screw (23)
M6 Washer (25)
M8 Washer (26)
Page 6
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 bench, make sure all
parts are oriented as shown in the drawings.
• For help identifying small parts, use the PART
IDENTIFICATION CHART on page 5.
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 bench can be assembled successfully by anyone. However, it is important to
realize that the versatile weight bench 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.
6
1. Before assembling this product, be sure that
you have read and understand the information
in the box above.
Slide the Right Crossbar (3) into the Left
Crossbar (2), with the decal on top. Note: the
crossbar can be adjusted for use with either a
standard barbell or a mid-width barbell. For a
standard barbell, align the set of holes indicated by the arrows. For a mid-width barbell,
align the holes on the ends of the Crossbars.
Attach the Frame (4) to the Crossbars (2, 3) with
two M8 x 65mm Bolts (20), two M8 x 55mm Bolts
(18), and four M8 Nylon Locknuts (24). Note: The
Bolts should fit inside of the holes in the Left
Crossbar (2). Do not tighten the Nylon
Locknuts yet.
2. Insert a 38mm Square Inner Cap (17) into the
Front Leg (5).
Slide the welded tube on the Front Leg (5) into
the Frame (4). Secure the Front Leg with two M8
x 40mm Carriage Bolts (28), two M8 Washers
(26), and two M8 Nylon Locknuts (24). Do not
tighten the Nylon Locknuts yet.
1
ASSEMBLY
2
5
26
24
17
3
2
Decal
4
24
24
18
20
4
28
Page 7
7
3. Attach the Crossbars (2, 3) to the Uprights (1)
with four M8 x 65mm Bolts (20), two Support
Plates (10), and four M8 Nylon Locknuts (24). Do
not tighten the Nylon Locknuts yet. Note the
position of the name decal and make sure the
Uprights are oriented as shown.
4. Press a 25.4mm Round Inner Cap (15) into the
indicated end of the Weight Tube (31). Slide the
Weight Tube through the hole in the Leg Lever (6).
Attach the Weight Tube with an M8 x 50mm Bolt
(29), two M8 Washers (26), a Sleeve (30), and an
M8 Nylon Locknut (24). Press a 25.4mm Angle
Cap (16) onto the other end of the weight tube.
Tap three 38mm Square Inner Caps (17) into the
Leg Lever (6) as shown.
Lubricate the M10 x 60mm Bolt (21). Attach the
Leg Lever (6) to the Front Leg (5) with the Bolt
and an M10 Nylon Locknut (27). Do not over-
tighten the Nylon Locknut; the Leg Lever must
be able to pivot freely.
4
27
17
17
17
6
5
15
31
16
21
24
26
26
30
29
3
10
10
20
20
20
24
24
24
3
2
1
1
Name
Decal
5. Press four 25.4mm Square Inner Caps (19) into
the Backrest Tubes (7).
Attach the Backrest Tubes (7) to the Backrest (8)
in the indicated locations, with three M6 x 38mm
Screws (23) and three M6 Washers (25). Do not
tighten the Screws yet.
8
25
25
25
23
23
7
7
23
19
19
19
5
Page 8
8
7. Attach the Seat (9) to the brackets on the Frame
(4) with four M6 x 16mm Screws (22).
8. Press two 19mm Round Inner Caps (14) into
each Pad Tube (13). Slide the Pad Tubes through
the holes in the Leg Lever (6). Slide a Foam Pad
(12) onto each side of each Pad Tube.
14
14
12
12
8
9. Make sure that all parts are properly tightened
before you use the weight bench. The use of
all remaining parts will be explained in ADJUSTMENTS, beginning on the next page.
14
6
13
22
4
9
22
7
6. Press two 25.4mm Inner Caps (15) into the ends
of the Support Rod (11). Slide the Support Rod
through a set of holes in the Uprights (1) and turn
it to the locked position.
See the inset drawing. With the help of a second person, slide the indicated ends of the
Backrest Tubes (7) onto the welded axle on the
Frame (4).
Attach the left Backrest Tube (7) to the Backrest
(8) with a fourth M6 x 38mm Screw (23) and M6
Washer (25). Tighten all four Screws in the
Backrest.
Rest the Backrest (8) on the Support Rod (11).
Tighten the M8 Nylon Locknuts (24) used in
steps 1–3.
1
1
15
15
11
23
25
8
6
7
7
7
4
4
Welded Axle
Page 9
ATTACHING WEIGHTS
To use the Leg Lever (6), slide the desired weights
(not included) onto the weight tube.
9
The weight bench is designed to be used with your own weight set (not included). The steps below explain how
the weight bench can be adjusted. See EXERCISE GUIDELINES on page 10 for important exercise information
and refer to the accompanying exercise guide to see the correct form for several exercises. Refer also to the
exercise information accompanying your weight set (not included) for additional exercises.
Inspect and tighten all parts each time you use the weight bench. Replace any worn parts immediately. The
weight bench can be cleaned with a damp cloth and a mild, non-abrasive detergent. Do not use solvents.
ADJUSTING THE BACKREST
The Backrest (8) can be used in a decline position,
three incline positions, or a flat position. To use the
Backrest in the decline position, remove the Support
Rod (11) and lay the Backrest on the Crossbar (2).
To use the Backrest (8) in an incline position, lift the
Backrest and insert the end of the Support Rod (11)
without the locking clip through one of the top three
sets of holes in the Uprights (1). Rotate the locking
clip into place around the Upright.
To use the Backrest (8) in the flat position, lift the
Backrest and insert the end of the Support Rod (11)
without the locking clip through the bottom set of
holes in the Uprights (1). Rotate the locking clip into
place around the Upright.
1
11
2
6
Weight Tube
Weight
8
1
WARNING: Do not place more
than 50 pounds on the Leg Lever (6).
WARNING: When using the
Backrest (8) in an incline or level position,
make sure that the Support Rod (11) is inserted completely through both Uprights (1), and
that the Support Rod is turned to the locked
position.
ADJUSTMENTS
Page 10
10
EXERCISE GUIDELINES
THE FOUR BASIC TYPES OF WORKOUTS
Muscle Building
To increase the size and strength of your muscles,
push them close to their maximum capacity. Your muscles will continually adapt and grow as you progressively increase the intensity of your exercise. You can
adjust the intensity level of an individual exercise in
two ways:
• by changing the amount of weight used
• by changing the number of repetitions or sets per-
formed. (A “repetition” is one complete cycle of an
exercise, such as one sit-up. A “set” is a series of
repetitions.)
The proper amount of weight for each exercise
depends upon the individual user. You must gauge
your limits and select the amount of weight that is right
for you. Begin with 3 sets of 8 repetitions for each
exercise you perform. Rest for 3 minutes after each
set. When you can complete 3 sets of 12 repetitions
without difficulty, increase the amount of weight.
Toning
You can tone your muscles by pushing them to a moderate percentage of their capacity. Select a moderate
amount of weight and increase the number of repetitions in each set. Complete as many sets of 15 to 20
repetitions as possible without discomfort. Rest for 1
minute after each set. Work your muscles by completing more sets rather than by using high amounts of
weight.
Weight Loss
To lose weight, use a low amount of weight and
increase the number of repetitions in each set.
Exercise for 20 to 30 minutes, resting for a maximum
of 30 seconds between sets.
Cross Training
Cross training is an efficient way to get a complete and
well-balanced fitness program. An example of a balanced program is:
• Plan weight training workouts on Monday,
Wednesday, and Friday.
• Plan 20 to 30 minutes of aerobic exercise, such as
cycling or swimming, on Tuesday and Thursday.
• Rest from both weight training and aerobic exercise
for at least one full day each week to give your body
time to regenerate.
The combination of weight training and aerobic exercise will reshape and strengthen your body, plus develop your heart and lungs.
PERSONALIZING YOUR EXERCISE PROGRAM
Determining the exact length of time for each workout,
as well as the number of repetitions or sets completed,
is an individual matter. It is important to avoid overdoing it during the first few months of your exercise program. You should progress at your own pace and be
sensitive to your body’s signals. If you experience pain
or dizziness at any time while exercising, stop immediately and begin cooling down. Find out what is wrong
before continuing. Remember that adequate rest and a
proper diet are important factors in any exercise program.
WARMING UP
Begin each workout with 5 to 10 minutes of stretching
and light exercise to warm up. Warming up prepares
your body for more strenuous exercise by increasing
circulation, raising your body temperature and delivering more oxygen to your muscles.
WORKING OUT
Each workout should include 6 to 10 different exercises. Select exercises for every major muscle group,
emphasizing areas that you want to develop most. To
give balance and variety to your workouts, vary the
exercises from session to session.
Schedule your workouts for the time of day when your
energy level is the highest. Each workout should be
followed by at least one day of rest. Once you find the
schedule that is right for you, stick with it.
EXERCISE FORM
Maintaining proper form is an essential part of an
effective exercise program. This requires moving
through the full range of motion for each exercise, and
moving only the appropriate parts of the body.
Exercising in an uncontrolled manner will leave you
feeling exhausted. On the exercise guide accompanying this manual you will find photographs showing the
correct form for several exercises, and a list of the
muscles affected. Refer to the muscle chart on page
11 to find the names of the muscles.
The repetitions in each set should be performed
smoothly and without pausing. The exertion stage of
each repetition should last about half as long as the
return stage. Proper breathing is important. Exhale
during the exertion stage of each repetition and inhale
during the return stroke. Never hold your breath.
Page 11
11
Rest for a short period of time after each set. The
ideal resting periods are:
• Rest for three minutes after each set for a muscle
building workout.
• Rest for one minute after each set for a toning work-
out.
• Rest for 30 seconds after each set for a weight loss
workout.
Plan to spend the first couple of weeks familiarizing
yourself with the equipment and learning the proper
form for each exercise.
COOLING DOWN
End each workout with 5 to 10 minutes of stretching.
Include stretches for both your arms and legs. Move
slowly as you stretch and do not bounce. Ease into
each stretch gradually and go only as far as you can
without strain. Stretching at the end of each workout
is an effective way to increase flexibility.
STAYING MOTIVATED
For motivation, keep a record of each workout. The
charts on pages 12 and 13 of this manual can be
photocopied and used to schedule and record your
workouts. List the date, the exercises performed, the
weight used, and the numbers of sets and repetitions
completed. Record your weight and key body measurements at the end of every month. Remember, the
key to achieving the greatest results is to make exercise a regular and enjoyable part of your everyday
MUSCLE CHART
A. Sternomastoid (neck)
B. Pectoralis Major (chest)
C. Biceps (front of arm)
D. Obliques (waist)
E. Brachioradials (forearm)
F. Hip Flexors (upper thigh)
G. Abductor (outer thigh)
H. Quadriceps (front of thigh)
I. Sartorius (front of thigh)
J. Tibialis Anterior (front of calf)
K. Soleus (front of calf)
L. Rectus Abdominus (stomach)
M. Adductor (inner thigh)
N. Trapezius (upper back)
O. Rhomboideus (upper back)
P. Deltoid (shoulder)
Q. Triceps (back of arm)
R. Latissimus Dorsi (mid back)
S. Spinae Erectors (lower back)
T. Gluteus Medius (hip)
U. Gluteus Maximus (buttocks)
V. Hamstring (back of leg)
W. Gastrocnemius (back of calf)
A
B
C
D
E
G
H
I
J
K
F
M
L
T
N
O
P
Q
R
S
U
V
W
Page 12
12
MONDAY
Date:
/ /
EXERCISE WEIGHT SETS REPS
EXERCISE WEIGHT SETS REPS
EXERCISE WEIGHT SETS REPS
AEROBIC EXERCISE
AEROBIC EXERCISE
TUESDAY
Date:
/ /
WEDNESDAY
Date:
/ /
THURSDAY
Date:
/ /
FRIDAY
Date:
/ /
Make photocopies of this page for scheduling and recording your workouts.
Page 13
13
MONDAY
Date:
/ /
EXERCISE WEIGHT SETS REPS
EXERCISE WEIGHT SETS REPS
EXERCISE WEIGHT SETS REPS
AEROBIC EXERCISE
AEROBIC EXERCISE
TUESDAY
Date:
/ /
WEDNESDAY
Date:
/ /
THURSDAY
Date:
/ /
FRIDAY
Date:
/ /
Make photocopies of this page for scheduling and recording your workouts.
Page 14
Key No. Qty. Description
1 2 Upright
2 1 Left Crossbar
3 1 Right Crossbar
4 1 Frame
5 1 Front Leg
6 1 Leg Lever
7 2 Backrest Tube
8 1 Backrest
9 1 Seat
10 2 Support Plate
11 1 Support Rod
12 4 Foam Pad
13 2 Pad Tube
14 4 19mm Round Inner Cap
15 3 25.4mm Round Inner Cap
16 1 25.4mm Angle Cap
17 4 38mm Square Inner Cap
Key No. Qty. Description
18 2 M8 x 55mm Bolt
19 4 25.4mm Square Inner Cap
20 6 M8 x 65mm Bolt
21 1 M10 x 60mm Bolt
22 4 M6 x 16mm Screw
23 4 M6 x 38mm Screw
24 11 M8 Nylon Locknut
25 4 M6 Washer
26 4 M8 Washer
27 1 M10 Nylon Locknut
28 2 M8 x 40mm Carriage Bolt
29 1 M8 x 50mm Bolt
30 1 Sleeve
31 1 Weight Tube
# 1 User’s Manual
# 1 Exercise Guide
“#” Indicates a non-illustrated part. Specifications are subject to change without notice. See the back cover of
this manual for information on ordering replacement parts.
14
PART LIST—Model No. 831.150721 R0701A
Page 15
15
EXPLODED DRAWING—Model No. 831.150721 R0701A
19
8
12
6
12
24
17
27
16
9
21
17
28
24
1
10
22
26
22
20
20
4
15
25
23
7
7
25
23
19
19
3
20
24
24
25
23
18
2
25
1
20
20
19
23
10
24
24
17
15
31
26
17
14
13
26
30
14
14
13
24
5
29
14
12
12
11
15
Page 16
Part No. 176989 R0701A Printed in China © 2001 Sears, Roebuck and Co.
The model number and serial number of your WEIDER®400 are
listed on a decal attached to the frame. See the front cover of
this manual to find the location of the decal.
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.
When requesting help or service, or ordering parts, please be
prepared to provide the following information:
• The MODEL NUMBER of the product (831.150721)
• The NAME of the product (WEIDER
®
400 weight bench)
• The PART NUMBER and DESCRIPTION of the part (see the
PART LIST and the EXPLODED DRAWING on pages 14 and
15 of this manual).
SEARS, ROEBUCK AND CO., HOFFMAN ESTATES, IL 60179
For 90 days from the date of purchase, if failure occurs due to defect in material or workmanship in this
SEARS WEIGHT BENCH EXERCISER, contact the nearest SEARS Service Center throughout the United
States and SEARS will repair or replace the WEIGHT BENCH EXERCISER, free of charge.
This warranty does not apply when the WEIGHT BENCH 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
FULL 90 DAY WARRANTY
ORDERING REPLACEMENT PARTS
Model No. 831.150721
QUESTIONS?
If you find that:
• you need help assembling or
operating the WEIDER
®
400
• a part is missing
• or you need to schedule repair
service
call our toll-free HELPLINE
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 tollfree number
1-800-FON-PART
(1-800-366-7278)
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