Weider Pro Power Stack 831 159831 Users Manual

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2015-01-26

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USER’S MANUAL

Model No. 831.159831

Serial No.

The serial number is found in the

location shown below. Write the

serial number in the space above.

CAUTION

Read all precautions and instruc-

tions in this manual before using

this equipment. Save this manu-

al for future reference.

Serial

Number

Decal

Patent Pending

Visit our website at

www.weiderfitness.com

new products, prizes,

fitness tips, and much more!

SEARS, ROEBUCK AND CO.

HOFFMAN ESTATES, IL 60179

TABLE OF CONTENTS

IMPORTANT PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

BEFORE YOU BEGIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

WEIGHT RESISTANCE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

TROUBLESHOOTING AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

CABLE DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

ORDERING REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover

FULL 90 DAY WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back Cover

Note: A PART LIST/EXPLODED DRAWING and a PART IDENTIFICATION CHART are attached in the center of

this manual. Remove the PART LIST/EXPLODED DRAWING and the PART IDENTIFICATION CHART before

beginning assembly.

IMPORTANT PRECAUTIONS

WARNING: To reduce the risk of serious injury, read the following important precautions

before using the weight system.

1. Read all instructions in this manual and in

the accompanying literature before using the

weight system.

2. It is the responsibility of the owner to ensure

that all users of the weight system are ade-

quately informed of all precautions.

3. The weight system is intended for home use

only. Do not use the weight system in any

commercial, rental, or institutional setting.

4. Use the weight system only on a level sur-

face. Cover the floor beneath the weight sys-

tem to protect the floor.

5. Make sure all parts are properly tightened

each time you use the weight system.

Replace any worn parts immediately.

6. Keep children under 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.

9. The weight system is designed to support a

a maximum user weight of 250 pounds.

10. Always stand on the foot plate when per-

forming an exercise that could cause the

weight system to tip.

11. Never release the press arm, butterfly arms,

leg lever, press plate, lat bar, ab strap, or

nylon strap while weights are raised; the

weights will fall with great force.

12. Always disconnect the lat bar from the

weight system when performing an exercise

that does not use the lat bar.

13. Make sure that the cables remain on the pul-

leys 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.

14. If you feel pain or dizziness at any time while

exercising, stop immediately and begin cool-

ing down.

15. The decal shown here

has been placed on the

weight system in the

location shown on page

4. If the decal is missing

or illegible, please call

our toll-free HELPLINE at

the number on the front

cover of this manual to

order a replacement

decal. Apply the new

decal in the indicated

location.

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.

ASSEMBLED

DIMENSIONS:

Height: 77 in.

Width: 80 in.

Depth: 55 in.

Low Pulley

Station

Foot Plate

Leg Lever

Press Arm

Backrest

Curl Pad

Butterfly Arm

Ab Pulley

Station

Weight Stack

Leg Press Lever

Thank you for selecting the innovative and versatile

WEIDER®PRO POWER STACK weight system. The

POWER STACK 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 POWER

STACK will help you to achieve the results you want.

For your benefit, read this manual carefully before

using the POWER STACK 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 prod-

uct model number and serial number before calling.

The model number is 831.159831. The serial number

can be found on a decal attached to the weight system

(see the front cover of this manual).

Please use the drawing below to familiarize your-

self with the major parts and how they fit together.

Seat

Leg Press

Backrest

Seat

High Pulley

Station

Warning

Decal

Lat Bar

BEFORE YOU BEGIN

Make sure you have the following tools:

• Two adjustable wrenches

• 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.

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.

How to Identify Parts

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.

How to Orient Parts

As you assemble the weight system, make sure that

all parts are oriented exactly as shown in the draw-

ings.

Tightening Parts

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 toll-free HELPLINE at

1-800-736-6879, Monday through Saturday, 7 a.m.

until 7 p.m. Central Time (excluding holidays).

Assembly Requires Two Persons

For your convenience and safety, assemble the

weight system with the help of another person.

Set Aside Enough Time

Due to the many features of the weight system, the

assembly process will require several hours. 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.

Select a Location for the Weight System

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.

How to Unpack the Box

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.

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.

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.

Arm Assembly—During this stage you will

assemble the arms and the leg lever.

Cable Assembly—During this stage you will

attach the cables and pulleys that connect the

arms to the weights.

Seat Assembly—During the final stage you will

assemble the seats and the backrests.

ASSEMBLY

1. Before beginning, be sure that you have read

and understood the information on page 5.

Locate and open the parts bag labeled

“FRAME ASSEMBLY.”

Press a 2” Square Inner Cap (67) into each end

of the Butterfly Base (1).

Insert four 5/16” x 2 1/2” Carriage Bolts (75) and a

a 3/8” x 3 1/2” Carriage Bolt (95) up through the

indicated holes in the Butterfly Base (1). Place the

Butterfly Base flat on the floor. Note: If the Bolts

fall out, secure them by putting a small piece of

tape over the head of each Bolt.

2. Press three 2” Square Inner Caps (67) into the

Center Base (2). Insert a 3/8” x 3 1/2” Carriage

Bolt (95) up through the indicated hole in the

Center Base.

Attach the Center Base (2) to the Butterfly Base (1)

with two 5/16” x 2 3/4” Bolts (89), a Medium

Support Plate (109), and two 5/16” Nylon Locknuts

(86). Do not tighten the Nylon Locknuts yet.

Note: There are three kinds of Support Plates.

The main difference between them is the dis-

tance between the holes. When you need a

Support Plate, find the kind with holes that

will fit over the bolts you are using.

3. Press a 2” Square Inner Cap (67) into the end of

the Press Base (3).

Insert four 5/16” x 2 1/2” Carriage Bolts (75) up

through the indicated holes in the Press Base (3).

Insert a 3/8” x 2 1/2” Carriage Bolt (76) and a 3/8”

x 4” Carriage Bolt (112) up through the indicated

holes at the end of the Press Base.

Attach the Press Base (3) to the Center Base (2)

with two 5/16” x 2 3/4” Bolts (89), a Medium

Support Plate (109), and two 5/16” Nylon Locknuts

(86). Do not tighten the Nylon Locknuts yet.

Frame Assembly

86 67

109

112

109

4. Slide the Butterfly Upright (4) over the indicated

5/16” x 2 1/2” Carriage Bolts (75) in the Butterfly

Base (1). Hand tighten two 5/16” Nylon Locknuts

(86) onto the Bolts. Do not tighten the Nylon

Locknuts yet.

5. Press three 2” Square Inner Caps (67) into the

Butterfly Top Frame (7). Press two Round Inner

Caps (63) into the top of the Butterfly Top Frame.

Attach the Butterfly Top Frame (7) to the indicat-

ed bracket at the top of the Butterfly Upright (4)

with two 5/16” x 2 3/4” Bolts (89), a Medium

Support Plate (109), and two 5/16” Nylon

Locknuts (86).

109

175

6. Press a 2” Square Inner Cap (67) halfway into the

top of the Butterfly Leg (11). Attach a Bumper (50)

to the Butterfly Leg with a 1” Tap Screw (80).

Attach the Butterfly Seat Frame (10) to the

Butterfly Leg (11) with two 5/16” x 2 3/4” Bolts

(89), two 5/16” Washers (100), and two 5/16”

Nylon Locknuts (86). Do not tighten the Nylon

Locknuts yet.

80 50 11

100

8. Press a 1” Square Inner Cap (69) into the small

tube on the Press Upright (5).

Slide the Press Upright (5) over the indicated

5/16” x 2 1/2” Carriage Bolts (75) in the Press

Base (3). Hand tighten two 5/16” Nylon Locknuts

(86) onto the Bolts. Do not tighten the Nylon

Locknuts yet.

Slide the Upright Support (6) over the 3/8” x

2 1/2” Carriage Bolt (76) and the 3/8” x 4”

Carriage Bolt (112) in the Press Base (3). Hand

tighten a 3/8” Nylon Jamnut (92) onto the 3/8” x

2 1/2” Carriage Bolt. Do not tighten the Nylon

Jamnut yet. Note: Do not thread a Nylon

Jamnut onto the 3/8” x 4” Carriage Bolt yet.

Attach the Upright Support (6) to the Press

Upright (5) with two 5/16” x 2 1/2” Carriage Bolts

(75) and two 5/16” Nylon Locknuts (86). Do not

tighten the Nylon Locknuts yet.

86 100

112

7. Slide the Butterfly Leg (11) onto the two 5/16” x

2 1/2” Carriage Bolts (75) in the Butterfly Base

(1). Hand tighten two 5/16” Nylon Locknuts (86)

onto the Bolts.

Attach the Butterfly Seat Frame (10) to the

Butterfly Upright (4) with two 5/16” x 2 3/4” Bolts

(89), two 5/16” Washers (100), and two 5/16”

Nylon Locknuts (86).

Do not tighten the 5/16” Nylon Locknuts (86)

yet.

89 100

9. Press a 2” Square Inner Cap (67) into the Press

Seat Frame (12). Attach a Bumper (50) to the

Press Seat Frame with a 1” Tap Screw (80).

Slide the Press Seat Frame (12) onto the indicat-

ed 5/16” x 2 1/2” Carriage Bolts (75) in the Press

Base (3). Hand tighten two 5/16” Nylon Locknuts

(86) onto the Bolts. Do not tighten the Nylon

Locknuts yet.

Attach the Press Seat Frame (12) to the Press

Upright (5) with two 5/16” x 2 3/4” Bolts (89), two

5/16” Washers (100), and two 5/16” Nylon

Locknuts (86). Do not tighten the Nylon

Locknuts yet.

10. Press a 2” Square Inner Cap (67) into the Press

Top Frame (9).

Attach the Press Top Frame (9) to the indicated

bracket at the top of the Press Upright (5) with

two 5/16” x 2 3/4” Bolts (89), a Medium Support

Plate (109), and two 5/16” Nylon Locknuts (86).

Do not tighten the Nylon Locknuts yet.

11. Identify the Left Weight Guides (27), which have

welded rings near the bottom. Slide two Weight

Bumpers (46) onto the Left Weight Guides. Note:

The wide end of the Weight Bumpers must be

on bottom. Insert the Left Weight Guides into the

indicated holes in the Center Base (2).

Set the other two Weight Bumpers (46) over the

indicated holes in the Center Base (2). Note: The

wide end of the Weight Bumpers must be on

bottom. Insert the Right Weight Guides (26)

through the Weight Bumpers and into the holes in

the Center Base.

109

Welded

Rings

12. Attach the indicated Weight Guides (26, 27) to

the Center Base (2) with two 3/8” x 2 3/4” Bolts

(82), four 3/8” Washers (97), and two 3/8” Nylon

Locknuts (90).

90 90

13. Slide six Weights (41) onto the Right Weight

Guides (26). Make sure the Weights are turned

so the pin grooves are on the bottom.

Press a Weight Tube Bumper (45) into the lower

end of the Short Weight Tube (44). Slide the

Short Weight Tube into the center holes in the

Weights (41).

Slide a Top Weight (42) onto the Right Weight

Guides (26). Note: Make sure the Top Weight is

turned so the groove fits over the welded pin

on the Short Weight Tube (44).

41 45

Grooves

Welded

14. Slide the Bottom Weight (47) and seven Weights

(41) onto the Left Weight Guides (27). Make sure

the Weights are turned so the pin grooves are

on the bottom.

Press a Weight Tube Bumper (45) into the lower

end of the Long Weight Tube (43). Slide the Long

Weight Tube into the center holes in the Weights

(41).

Slide the other Top Weight (42) onto the Left

Weight Guides (27). Note: Make sure the Top

Weight is turned so the groove fits over the

welded pin on the Long Weight Tube (43).

Welded

Groove

28 67

90 90

26 27

578

90 92

15. Press a 2” Square Inner Cap (67) into the Center

Top Frame (8). Place the Center Top Frame on

the indicated brackets on the Uprights (4, 5).

Note: The tops of the four Weight Guides (26,

27) must be behind the Center Top Frame, as

shown in step 16.

Attach the Center Top Frame (8) to the Butterfly

Top Frame (7) with two 3/8” x 2 3/4” Bolts (82), a

Large Support Plate (29), and two 3/8” Nylon

Locknuts (90). Do not tighten the Nylon

Locknuts yet.

Attach the Center Top Frame (8) to the bracket on

the Butterfly Upright (4) with two 3/8” x 2 3/4”

Bolts (82), a Small Support Plate (28), and two

3/8” Nylon Jamnuts (92). Do not tighten the

Nylon Locknuts yet.

16. Attach the Center Top Frame (8) to the rear hole in

the Press Top Frame (9) with a 3/8” x 2 3/4” Bolt

(82), a Large Support Plate (29), and a 3/8” Nylon

Locknut (90). Do not tighten the Locknut yet.

Locate the parts bag labeled “PULLEY BAG

1.” Remove a 3 1/2” Pulley (35) from the bag.

Slide a 3 1/2” Pulley (35) and a Cable Trap (38)

onto a 3/8” x 4” Bolt (78). Slide the Bolt through the

Large Support Plate (29) and Press Top Frame (9),

and hand tighten a 3/8” Nylon Locknut (90) onto it.

Attach the Center Top Frame (8) to the bracket on

the Press Upright (5) with two 3/8” x 2 3/4” Bolts

(82), a Small Support Plate (28), and two 3/8”

Nylon Jamnuts (92). Do not tighten the Nylon

Locknuts yet.

17. Attach each set of Weight Guides (26, 27) to the

Center Top Frame (8) with two 3/8” x 3 3/4” Bolts

(101), two 3/8” SAE Washers (113), and two 3/8”

Nylon Locknuts (90).

Tighten the 3/8” Nylon Locknuts (90), the

5/16” Nylon Locknuts (86), and the 3/8” Nylon

Jamnut (92) used in steps 2–17.

113

101

20. See the inset drawing. Press a Plastic Bushing

(60) onto each welded tube on the Press Frame

(17). Slide the Press Frame into place on the

Press Base (3). Note: This will be a tight fit.

The Plastic Bushings should fit onto each end

of the welded tubes in the Base.

Lubricate the 3/8” x 8” Bolt (106). Attach the

Press Frame (17) to the Press Base (3) with the

Bolt and a 3/8” Nylon Jamnut (92). Do not over-

tighten the Nylon Jamnut; the Press Frame

must pivot easily.

21. Press a 1 3/4” Square Inner Cap (68) into the top

of a Press Arm (18). Press a 1” Round Inner Cap

(66) into the Press Arm.

Attach the Press Arm (18) to the Press Frame

(17) with two 5/16” x 2 1/2” Bolts (87) and two

5/16” Nylon Locknuts (86).

Repeat this step with the other Press Arm (18).

Arm Assembly

18. Locate and open the parts bag labeled “ARM

ASSEMBLY.”

Press two 2” Square Inner Caps (67) into the

ends of the Leg Lever (13).

Lubricate a 3/8” x 3 1/4” Bolt (104). Attach the

Leg Lever (13) to the Butterfly Leg (11) with the

Bolt and a 3/8” Nylon Jamnut (92). Do not over-

tighten the Nylon Jamnut; the Leg Lever must

be able to pivot easily.

92 11

104

Lubricate

19. Lubricate the 3/8” x 3” Bolt (88). Attach the Leg

Press Lever (14) to the Press Base (3) with the

Bolt and a 3/8” Nylon Locknut (90). Do not over-

tighten the Nylon Locknut; the Leg Press

Lever must pivot easily.

Lubricate

88 3

Lubricate

17 3

106

Bracket

105

90 73

22. Identify the Right and Left Butterfly Arms (19, 20)

by the positions of the welded brackets.

Press a 1 3/4” Square Inner Cap (68) into each

end of the Right Butterfly Arm (19). Wet the lower

end of the Butterfly Arm with soapy water. Slide a

Large Foam Pad (53) onto the lower end of the

Butterfly Arm.

Lubricate the axles on the Butterfly Top Frame

(7). Orient the Right Butterfly Arm (19) as shown

and slide it onto the right axle. Have a second

person secure the Butterfly Arm with two 1”

Retainers (54) and a 1” Cover Cap (55). Note:

Place the Retainers on top of the inverted

Cover Cap. Make sure the teeth on the

Retainers bend toward the Cover Cap, as

shown in the inset drawing. Gently tap the

Cover Cap onto the axle with a hammer.

Repeat this step with the Left Butterfly Arm (20).

22 7

Lubricate

Axles

Bracket

Welded

Brackets

24. Locate and open the parts bag labeled

“PULLEY BAG 2.” Remove one “V”-Pulley (34)

from the bag. Leave the remaining pulleys in

the bag for identification of the Pro Pulleys.

Wrap the Butterfly Cable (73) around a “V”-Pulley

(34) in the direction shown. Attach the Pulley and

a Long Cable Trap (37) to the bracket on the

back of the Butterfly Upright (4) with a 3/8” x

2 1/2” Bolt (105) and a 3/8” Nylon Locknut (90).

Make sure the Long Cable Trap is oriented as

shown.

23. Locate and open the parts bag labeled

“CABLE ASSEMBLY.” For cable identification

and routing during steps 23 to 61, refer to the

CABLE DIAGRAMS and CABLE ID CHART on

pages 30 and 31.

Identify the Butterfly Cable (73). It is approxi-

mately 52” long and it has an eyelet on each end.

Attach the Butterfly Cable to the bracket on the

Left Butterfly Arm (20) with a 5/16” x 1” Shoulder

Bolt (84) and a 5/16” Nylon Jamnut (77).

Cable Assembly

Teeth

Axle

26. Remove another “V”-Pulley (34) from the bag

labeled “PULLEY BAG 2.”

Wrap the Butterfly Cable (73) around the “V”-

Pulley (34) in the direction shown. Attach the

Pulley and a Long Cable Trap (37) to the bracket

on the back of the Butterfly Upright (4) with a

3/8” x 2 1/2” Bolt (105) and a 3/8” Nylon Locknut

(90). Make sure the Long Cable Trap is orient-

ed as shown.

25. Remove the 3 1/2” Pulleys (35) from the Double

“U”-Bracket (31).

Wrap the Butterfly Cable (73) around a 3 1/2”

Pulley (35). Attach the Pulley to the Double “U”-

Bracket (31) with a 3/8” x 1 3/4” Bolt (94) and a

3/8” Nylon Locknut (90).

105

73 34

27. Attach the Butterfly Cable (73) to the bracket on

the Right Butterfly Arm (19) with a 5/16” x 1”

Shoulder Bolt (84) and a 5/16” Nylon Jamnut (77).

28. Identify the Rear Cable (70). It is approximately

95 1/8” long, and it has an eyelet on one end and

a threaded shaft on the other.

Attach the eyelet on the Rear Cable (70) inside

the Center Top Frame (8) with a 3/8” x 2 3/4” Bolt

(82), two 3/8” Washers (97), and a 3/8” Nylon

Locknut (90).

90 8

32. Identify the Ab Cable (74). It is approximately

226 1/2” long, and it has a ball on one end and

an eyelet on the other.

Wrap the Ab Cable (74) around a 3 1/2” Pulley

(35) as shown. Place two Pulley Covers (39) over

the Pulley, so that the large tabs are on the side

shown. Attach the Pulley and Pulley Covers to the

Butterfly Upright (4) with a 3/8” x 3 3/4” Bolt

(101), two 3/8” Washers (97), and a 3/8” Nylon

Jamnut (92). Make sure the Cable is between

the Pulley and the pin on the Upright.

92 97

74 97

101

Large tabs

on this side

435

29. Remove the 3 1/2” Pulleys (35) from a pair of pre-

assembled Pulley Plates (32).

Wrap the Rear Cable (70) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley and

a Cable Trap (38) to the top hole in the pair of

Pulley Plates (32) with a 3/8” x 2” Bolt (93) and a

3/8” Nylon Locknut (90). Make sure the Cable

Trap is positioned to hold the Cable in the

groove of the Pulley.

30. Wrap the Rear Cable (70) around a 4 1/2” Pulley

(36) in the direction shown. Attach the Pulley

inside the indicated bracket on the Center Top

Frame (8) with a 3/8” x 1 3/4” Bolt (94) and a 3/8”

Nylon Locknut (90).

70 93

31. Attach the end of the Rear Cable (70) to a “U”-

Bracket (33) with a 1/4” Washer (99) and a 1/4”

Nylon Locknut (103).

Attach the “U”-Bracket (33) to the Short Weight

Tube (44) with a 5/16” x 1 3/4” Bolt (96) and a

5/16” Nylon Locknut (86).

103

Bracket

34. Wrap the Ab Cable (74) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley to

the Double “U”-Bracket (31) with a 3/8” x 1 3/4”

Bolt (94) and a 3/8” Nylon Locknut (90).

33. Remove the 3 1/2” Pulleys (35) from the other

pair of pre-assembled Pulley Plates (32).

Wrap the Ab Cable (74) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley and

a Cable Trap (38) to the top hole in the pair of

Pulley Plates (32) with a 3/8” x 2” Bolt (93) and a

3/8” Nylon Locknut (90). Make sure the Cable

Trap is positioned to hold the Cable in the

groove of the Pulley.

35. Wrap the Ab Cable (74) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley and

a Cable Trap (38) to the indicated bracket on the

Butterfly Base (1) with a 3/8” x 2” Bolt (93) and a

3/8” Nylon Locknut (90). Make sure the Cable

Trap is positioned to hold the Cable in the

groove of the Pulley.

36. Wrap the Ab Cable (74) around a 3 1/2” Pulley

(35) in the direction shown. Slide a Cable Trap

(38) and the Pulley onto the 3/8” x 3 1/2” Carriage

Bolt (95) in the Butterfly Base (1). Secure the

Pulley with a 3/8” Nylon Jamnut (92). Make sure

the Cable Trap is positioned to hold the Cable

in the groove of the Pulley.

32 35

35 92

195

93 74

38. Wrap the Ab Cable (74) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley and

a Cable Trap (38) to the forth set of holes from

the bottom in the indicated pair of Pulley Plates

(32) with a 3/8” x 2” Bolt (93) and a 3/8” Nylon

Locknut (90). Make sure the Cable Trap is posi-

tioned to hold the Cable in the groove of the

Pulley.

37. Wrap the Ab Cable (74) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley to

the indicated bracket on the Center Base (2) with

a 3/8” x 3 3/4” Bolt (101) and a 3/8” Nylon

Locknut (90). Make sure the Cable is routed in

the direction shown.

Note: The 3/8” x 3 3/4” Bolt (101) must be

inserted through both brackets on the Center

Frame (2). Tighten the 3/8” Nylon Locknut (90)

only a few turns onto the Bolt; it will need to

be removed in step 39.

101

295

Bracket

39. Remove the 3/8” x 3 3/4” Bolt (101) and the 3/8”

Nylon Locknut (90) used in step 37.

Wrap the Ab Cable (74) around a 3 1/2” Pulley (35)

in the direction shown. Attach the Pulley to the indi-

cated bracket on the Center Base (2), and the

3 1/2” Pulley (35) used in step 37 to its bracket,

with the 3/8” x 3 3/4” Bolt (101) and the 3/8” Nylon

Locknut (90). Note: Make sure the Pulley used

in step 37 is attached as shown.

Wrap the Ab Cable (74) around a 3 1/2” Pulley

(35) in the direction shown. Slide the Pulley and a

Cable Trap (38) onto the 3/8” x 3 1/2” Carriage

Bolt (95) in the Center Base (2). Secure the

Pulley with a 3/8” Nylon Jamnut (92). Make sure

the Cable Trap is positioned to hold the Cable

in the groove of the Pulley.

40. Lay the Ab Cable (74) inside the indicated bracket

on the Center Base (2). Attach a 3 1/2” Pulley

(35) inside the bracket with a 3/8” x 1 3/4” Bolt

(94) and a 3/8” Nylon Jamnut (92).

101

90 2

41. Locate the Weight Plate (48) that is attached

to the bottom of the Bottom Weight (47).

See the inset drawing. Attach the end of the Ab

Cable (74) to the bottom of the Weight Plate (48)

with a 5/16” x 1 3/4” Bolt (96) and a 5/16” Nylon

Locknut (86).

42. Remove a Pro Pulley (110) from the bag

labeled “PULLEY BAG 2.”

Identify the Low Cable (71). It is approximately

142 1/8” long and it has a ball on one end and an

eyelet on the other. Route the eyelet end through

the slot in the cable guide on the Butterfly Base

(1).

Route the Low Cable (71) under the Pro Pulley

(110). Attach the Pro Pulley and a Cable Trap

(38) to the bracket on the Butterfly Base (1) with

a 3/8” x 2” Bolt (93) and a 3/8” Nylon Locknut

(90). Make sure the Cable Trap is positioned to

hold the Cable in the groove of the Pulley.

110

Cable

Guide

43. Wrap the Low Cable (71) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley and

a Cable Trap (38) to the indicated hole in the

Butterfly Upright (4) with a 3/8” x 4 3/4” Bolt (102)

and a 3/8” Nylon Jamnut (92). Note: Thread the

Jamnut only two turns onto the Bolt, another

Pulley will be attached to the Bolt in step 45.

Make sure the Cable Trap is positioned to

hold the Cable in the groove of the Pulley.

102

44. Wrap the Low Cable (71) over a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley and

a Cable Trap (38) to the forth set of holes from

the bottom in the Pulley Plates (32) with a 3/8” x

2” Bolt (93) and a 3/8” Nylon Locknut (90). Make

sure the Cable Trap is positioned to hold the

Cable in the groove of the Pulley.

90 93

45. Remove the 3/8” Nylon Jamnut (92) from the

3/8” x 4 3/4” Bolt (102) inserted into the Butterfly

Upright (4) in step 43.

Wrap the Low Cable (71) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley and

a Cable Trap (38) to the 3/8” x 4 3/4” Bolt (102)

with the 3/8” Nylon Jamnut (92). Make sure the

Cable Trap is positioned to hold the Cable in

the groove of the Pulley.

46. Attach the Low Cable (71) to the Leg Lever (13)

with a 5/16” x 2 3/4” Shoulder Bolt (108), a 5/16”

Washer (100), and a 5/16” Nylon Jamnut (77).

102

100

108

47. Remove a Pro Pulley (110) from the bag

labeled “PULLEY BAG 2.”

Identify the Press Cable (72). It is approximately

387 5/8” long and it has a ball on one end and a

threaded shaft on the other.

Wrap the Press Cable (72) around the Pro Pulley

(110) in the direction shown. Attach the Pulley to

the Press Top Frame (9) with a 3/8” x 3 1/2” Bolt

(111), a 3/8” Washer (97), and a 3/8” Nylon

Jamnut (92). Make sure the Cable is between

the Pulley and the pin on the Press Top

Frame.

110 111

48. Route the threaded end of the Press Cable (72)

around the 3 1/2” Pulley (35) that was attached to

the Press Top Frame (9) in step 16. Make sure

the Cable Trap (38) is positioned to hold the

Cable in the groove of the Pulley. Properly

tighten the 3/8” Nylon Locknut (not shown)

attached to the 3/8” x 4” Bolt (78).

49. Wrap the Press Cable (72) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley and

a Cable Trap (38) to the indicated hole in the

Press Upright (5) with a 3/8” x 3 3/4” Bolt (101), a

3/8” Washer (97) and a 3/8” Nylon Locknut (90).

Make sure the Cable Trap is positioned to hold

the Cable in the groove of the Pulley.

101

50. Route the Press Cable (72) through the opening

in the Press Frame (17) and wrap the Cable

around a 3 1/2” Pulley (35) in the direction

shown.

Attach the 3 1/2” Pulley (35) and a Cable Trap

(38) to the indicated hole in the Press Frame (17)

with a 3/8” x 3 1/4” Bolt (104), a 3/8” Washer (97)

and a 3/8” Nylon Locknut (90). Make sure the

Pulley is attached on the inside of the Press

Frame. Make sure the Cable Trap is positioned

to hold the Cable in the groove of the Pulley.

104

51. Wrap the Press Cable (72) around a “V”-Pulley

(34) in the direction shown. Attach the Pulley and

a Long Cable Trap (37) to the small tube on the

Press Upright (5) with a 3/8” x 3 1/4” Bolt (104), a

3/8” Washer (97) and a 3/8” Nylon Locknut (90).

Note: The small tube has four adjustment

holes. Attach the “V”-Pulley in the hole far-

thest from the Upright. Make sure the Cable

Trap is oriented as shown.

52. Wrap the Press Cable (72) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley to

the indicated hole in the Press Frame (17) with a

3/8” x 3 1/4” Bolt (104), a 3/8” Washer (97), and a

3/8” Nylon Locknut (90). Make sure the Pulley is

attached on the inside of the Press Frame.

Make sure the Cable Trap is positioned to

hold the Cable in the groove of the Pulley.

104 34 37

104 72

53. Wrap the Press Cable (72) around a 3 1/2” Pulley

(35) in the direction shown. Attach the Pulley and

a Cable Trap (38) to the indicated hole on the

right side of the Press Upright (5) with a 3/8” x 4

3/4” Bolt (102) and a 3/8” Nylon Jamnut (92).

Note: Thread the Jamnut only two turns onto

the Bolt; another Pulley will be attached to the

Bolt in step 57. Make sure the Cable Trap is

positioned to hold the Cable in the groove of

the Pulley.

35 5

102

72 92

54. Route the Press Cable (72) through the Press

Frame (17) and around a 3 1/2” Pulley (35) as

shown. Attach the Pulley and a Cable Trap (38) to

the indicated hole on the right side of the Leg

Press Lever (14) with a 3/8” x 4 3/4” Bolt (102)

and a 3/8” Nylon Jamnut (92). Note: Thread the

Jamnut only two turns onto the Bolt; another

Pulley will be attached to the Bolt in step 56.

Make sure the Cable Trap is positioned to hold

the Cable in the groove of the Pulley.

55. Wrap the Press Cable (72) around a “V”-Pulley

(34) in the direction shown. Attach the Pulley and

a Long Cable Trap (37) underneath the Press

Seat Frame (12) with a 3/8” x 4 1/4” Bolt (85), a

3/8” Washer (97), and a 3/8” Nylon Locknut (90).

Note: the Press Seat Frame has five adjust-

ment holes. Attach the Pulley to the second

hole from the Leg Press Lever (14). Make sure

the Cable Trap is positioned to hold the Cable

in the groove of the Pulley.

56. Remove the 3/8” Nylon Jamnut (92) used in step

54.

Wrap the Press Cable (72) around a 3 1/2” Pulley

(35) in the direction shown. Slide a Cable Trap

(38) and the Pulley onto the 3/8” x 4 3/4” Bolt

(102) in the Leg Press Lever (14). Properly tight-

en the 3/8” Nylon Jamnut (92) onto the Bolt.

Make sure the Cable Trap is positioned to

hold the Cable in the groove of the Pulley.

38 35 92 72

102

102 72

57. Remove the 3/8” Nylon Jamnut (92) used in step

53. Route the Press Cable (72) through the Press

Frame (17).

Wrap the Press Cable (72) around a 3 1/2” Pulley

(35) in the direction shown. Slide a Cable Trap

(38) and the Pulley onto the 3/8” x 4 3/4” Bolt

(102) in the bottom of the Press Upright (5).

Properly tighten the 3/8” Nylon Jamnut (92) onto

the Bolt. Make sure the Cable Trap is posi-

tioned to hold the Cable in the groove of the

Pulley.

60. Wrap the Press Cable (72) around a 4 1/2” Pulley

(36) in the direction shown. Attach the Pulley

inside the indicated bracket on the Center Top

Frame (8) with a 3/8” x 1 3/4” Bolt (94) and a 3/8”

Nylon Locknut (90).

92102

890 72

58. Wrap the Press Cable (72) around a 3 1/2” Pulley

(35) in the direction shown. Slide a Cable Trap

(38) and the Pulley onto the 3/8” x 4” Carriage

Bolt (112) in the Press Base (3). Secure the Pulley

with a 3/8” Nylon Jamnut (92). Make sure the

Cable Trap is positioned to hold the Cable in

the groove of the Pulley.

112

72 92

59. Lay the Press Cable (72) in the bracket on the

Center Base (2). Attach a 3 1/2” Pulley (35) inside

the bracket with a 3/8” x 1 3/4” Bolt (94) and a

3/8” Nylon Jamnut (92).

72 35

61. Attach the Press Cable (72) to the remaining “U”-

Bracket (33) with a 1/4” Washer (99) and a 1/4”

Nylon Locknut (103). Note: Do not completely

tighten the Nylon Locknut; it should be

threaded only two turns onto the end of the

Cable, as shown in the inset drawing.

Attach the “U”-Bracket (33) to the Long Weight

Tube (43) with a 5/16” x 1 3/4” Bolt (96) and a

5/16” Nylon Locknut (86).

Important: Follow all five cables from end to

end and make sure that they rest in the

grooves of all of the pulleys and that the

cables and the pulleys move smoothly.

103

30 98

103

33 96

103

Seat Assembly

62. Locate and open the parts bag labeled “SEAT

ASSEMBLY.”

Attach the Butterfly Backrest (25) to the Butterfly

Upright (4) with two 1/4” x 2 1/2” Bolts (79) and

two 1/4” Washers (99).

63. Insert a 1/4” x 2 1/2” Carriage Bolt (91) through

the center hole in a Seat Plate (30). Attach the

Seat Plate to a Seat (23) with two 1/4” x 3/4” Bolt

(98).

Insert the 1/4” x 2 1/2” Carriage Bolt (91) into the

indicated hole in the Butterfly Seat Frame (10)

and secure it with a 1/4” Washer (99) and a 1/4”

Nylon Locknut (103). Secure the other end of the

Seat (23) with a 1/4” x 2 1/2” Bolt (79) and a 1/4”

Washer.

Attach the other Seat (23) to the Press Seat

Frame (12, not shown) in the same manner.

64. Insert a 1/4” x 2 1/2” Carriage Bolt (91) through

the center hole in a Seat Plate (30). Attach the

Seat Plate to the Press Backrest (24) with two

1/4” x 3/4” Bolt (98).

Insert the 1/4” x 2 1/2” Carriage Bolt (91) into the

indicated hole in the Press Upright (5) and secure

it with a 1/4” Washer (99) and a 1/4” Nylon

Locknut (103). Secure the other end of the Press

Backrest (24) with a 1/4” x 2 1/2” Bolt (79) and

another 1/4” Washer.

65. Press a 1 3/4” Square Inner Cap (68) into the

indicated end of the Adjustment Tube (15).

Attach the Adjustment Tube (15) to the bracket

(not visible in the drawing) on the back of the Leg

Press Plate (16) with a 5/16” x 2 1/2” Bolt (87),

two 5/16” Washers (100), and a 5/16” Nylon

Locknut (86).

Place the Adjustment Tube (15) in the bracket on

top of the Leg Press Lever (14) and secure it with

the Adjustment Pin (40). Note: The lip on the

Leg Press Plate (16) must be on the upper

edge.

66. Press four 3/4” Round Inner Caps (64) into the

ends of the two Pad Tubes (51).

Insert a Pad Tube (51) into the indicated hole in

the Leg Lever (13). Slide two Foam Pads (52)

onto the ends of the Pad Tube.

Insert a Pad Tube (51) into the indicated hole in

the Butterfly Leg (11). Slide two Foam Pads (52)

onto the ends of the Pad Tube.

67. Attach the Curl Pad (22) to the Curl Post (21) with

two 1/4” x 3/4” Bolts (98).

68. Make sure that all parts have been properly tightened. The use of the remaining parts will be explained in

ADJUSTMENTS, beginning on the following page.

Before using the weight system, pull each cable a few times to be sure that the cables move smoothly over

the pulleys. If one of the cables does not move smoothly, find and correct the problem. IMPORTANT: If the

cables are not properly installed, they may be damaged when heavy weight is used. See the CABLE

DIAGRAMS on pages 30 and 31 for proper cable routing. If there is any slack in the cables, you will

need to remove it by tightening the cables; see TROUBLESHOOTING AND MAINTENANCE on page

28.

Lip 87

100

ADJUSTING THE LEG PRESS PLATE

To adjust the position of the Leg Press Plate (16), pull

out the Adjustment Pin (40) and slide the Adjustment

Tube (15) either backward or forward in the bracket

on the Leg Press Lever (14). Line up one of the

adjustment holes in the Adjustment Tube with the

hole in the bracket and re-insert the Adjustment Pin.

21 49

ATTACHING THE ACCESSORIES TO A PULLEY

STATION

Attach the Lat Bar (59) to the Low Cable (71) at the

low pulley station with a Cable Clip (58). For some

exercises, the Chain (57) should be attached between

the Lat Bar and the Low Cable with two Cable Clips.

Adjust the length of the Chain between the Lat Bar

and the Low Cable so the Lat Bar is in the correct

starting position for the exercise to be performed.

The Nylon Strap (83) or Ab Strap (56) can be attached

in the same manner. The accessories can be attached

to the ab pulley station or high pulley station in the

same manner.

The instructions below describe how each part of the weight system can be adjusted. Refer to the exercise

guide accompanying this manual to see how the weight system should be set up for each exercise. IMPOR-

TANT: When using an accessory, make sure it is in the correct starting position for the exercise to be

performed. If there is any slack in the cables or chain as an exercise is performed, the effectiveness of

the exercise will be reduced.

ADJUSTMENTS

ATTACHING THE CURL PAD

To use the Curl Pad (22), remove the 2” Square Inner

Cap (67) from the Butterfly Leg (11). Slide the Curl

Post (21) to the desired height in the Butterfly Leg.

Tighten the Curl Knob (49) into the Butterfly Leg and

an adjustment hole in the Curl Post.

81 47

CHANGING THE WEIGHT SETTING

To change the setting of a weight stack, insert a

Weight Pin (81) under the desired Weight (41). Insert

the Weight Pin so that the bent end touches the

weight stack. Turn the bent end down.

To use the Bottom Weight (47) with the press arms or

the leg press, insert the Weight Pin (81) under the

Bottom Weight. Remove the other Weight Pin from

the small weight stack.

To use the small weight stack with the press arms or

leg press, insert a Weight Pin (81) under the Bottom

Weight (47). Then, insert the other Weight Pin under

the desired Weight (41) in the right weight stack.

Note: Due to the cables and pulleys, the amount of resistance at each exercise station may vary from

the weight setting. Use the WEIGHT RESISTANCE CHART on page 27 to find the approximate amount of

resistance at each weight station.

WEIGHT RESISTANCE CHART

The chart below shows the approximate weight resistance at each exercise station. “Left Top” and “Right Top”

refer to the 6 lb. top weights. “Bottom” refers to the 12.5 lb. bottom weight. The other numbers refer to the 12.5

lb. weight plates. Weight resistance shown for the butterfly arm station is for each butterfly arm. Note: The actu-

al resistance at each station may vary due to differences in individual weight plates as well as friction

between the cables, pulleys, and weight guides.

WEIGHT

Left Top

Bottom

Right Top

HIGH

PULLEY

(lbs.)

118

133

150

165

170

187

205

225

245

260

280

PRESS

ARM

(lbs.)

104

124

144

164

180

205

210

230

250

280

320

365

400

LEG

PRESS

(lbs.)

105

140

172

208

243

278

307

315

350

385

425

470

510

550

BUTTER-

FLY ARM

(lbs.)

103

120

PULLEY

(lbs.)

100

117

LEG

LEVER

(lbs.)

100

120

138

LOW

PULLEY

(lbs.)

113

130

The threaded ends on the Rear Cable (70) and the

Press Cable (72) attached to the weight stacks can

be used to tighten the cables.

To tighten the Rear Cable (70), remove the 5/16” x

1 3/4” Bolt (96) and the 5/16” Nylon Locknut (86) from

the “U”-Bracket (33) and the Short Weight Tube (44).

Tighten the 1/4” Nylon Locknut (103) at the end of the

Rear Cable (70) a few turns. Re-attach the “U”-

Bracket (33) to the Short Weight Tube (44) with the

5/16” x 1 3/4” Bolt (96) and the 5/16” Nylon Locknut

(86).

The Press Cable (72) can be tightened in the same

manner.

Adjustment

Holes 93

103

The Pulley Plates (32) have four sets of adjustment

holes for each 3 1/2” Pulley (35). Slack can be

removed from the cables by moving one or both

Pulleys to a set of holes closer to the center of the

Pulley Plates.

To move a 3 1/2” Pulley (35), remove the 3/8” Nylon

Locknut (90) and the 3/8” x 2” Bolt (93) from the

Pulley Plates (32), the Cable Trap (38), and Pulley.

Re-attach the Pulley and Cable Trap to the next set of

holes in the Pulley Plates with the Bolt and Nylon

Locknut. Note: Begin by moving the bottom Pulley

up one set of holes. If the cables are still too

loose, move the top Pulley down one set of holes,

until the slack in the cables has been removed.

TROUBLESHOOTING AND MAINTENANCE

Make sure all parts are properly tightened each time you use the weight system. Replace any worn parts immedi-

ately. The weight system can be cleaned using a damp cloth and mild non-abrasive detergent. Do not use solvents.

TIGHTENING THE CABLES

Woven cable, 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 several different ways.

When you are tightening the cables, note that they are linked into two distinct groups. The Rear Cable (70), the

Low Cable (71), the Butterfly Cable (73), and the Ab Cable (74) are all connected to the small weight stack. All

three cables will be tightened by tightening the Rear Cable at the small weight stack, or by adjusting the

3 1/2” Pulleys (35) in either set of Pulley Plates (32).

The Press Cable (72) is attached to the large weight stack. The Press Cable can be tightened at the large

weight stack or by moving the “V”-Pulleys (34) on the Press Upright (5) and the Press Seat Frame (12).

104

Slack can be removed from the Press Cable (72) by

moving the “V”-Pulley (34) attached to the Press Seat

Frame (12) closer to the Press Upright (5).

Remove the 3/8” x 4 1/4” Bolt (85), 3/8” Washer (97),

and 3/8” Nylon Locknut (90) from the Press Seat

Frame (12), the “V”-Pulley (34), and the Long Cable

Trap (37). Move the Pulley to a hole that is closer to

the Press Upright (5), one hole at a time, until the

slack is removed. Reattach the Pulley and Cable Trap

to the hole with the Bolt, Washer, and Nylon Locknut.

If there is still slack in the Press Cable (72), move the

“V”-Pulley (34) attached to the small tube on the

Press Upright (5) to a hole that is closer to the

Upright.

Remove the 3/8” x 3 1/4” Bolt (104), 3/8” Washer

(97), and 3/8” Nylon Locknut (90) from the Press

Upright (5), the “V”-Pulley (34), and the Long Cable

Trap (37). Move the Pulley to a hole that is closer to

the Press Upright, one hole at a time, until the slack

is removed. Reattach the Pulley and Cable Trap to

the hole with the Bolt, Washer, and Nylon Locknut.

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.

CABLE DIAGRAMS

The Cable Diagrams below and on the next page show the proper routing of the Rear Cable (70), the Low Cable

(71), the Press Cable (72), the Butterfly Cable (73), and the Ab Cable (74). 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.

CABLE ID CHART

73, 52”

70, 95 1/8”

71, 142 1/8”

74, 226 1/2”

72, 387 5/8”

Press Cable (72)

Low Cable (71)

Butterfly Cable (73)

Rear Cable (70)

Ab Cable (74)

SEARS, ROEBUCK AND CO., HOFFMAN ESTATES, IL 60179

Model No. 831.159831

QUESTIONS?

If you find that:

• you need help assembling or

operating the WEIDER®PRO

POWER STACK weight system

• 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 toll-

free number

1-800-FON-PART

(1-800-366-7278)

The model number and serial number of your WEIDER®PRO

POWER STACK 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.

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 (831.159831)

• The NAME of the product (WEIDER®PRO POWER STACK

weight system)

• The KEY NUMBER and DESCRIPTION of the PART (see the

PART LIST/EXPLODED DRAWING in the center of this manual).

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

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.

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.

3/8" Nylon Locknut (90)

3/8" Nylon Jamnut (92)

1/4" x 2 1/2" Carriage Bolt (91)

5/16" x 2 1/2" Carriage Bolt (75)

3/8" x 2 1/2"Carriage Bolt (76)

5/16" Nylon Jamnut (77)

5/16" Nylon Locknut (86)

3/8" x 2 3/4" Bolt (82)

3/8" x 2" Bolt (93)

1/4" Washer (99)

3/8" Washer (97)

1/4" x 2 1/2" Bolt (79)

1/4" Nylon Locknut (103)

5/16" Washer (100)

5/16" x 2 1/2" Bolt (87)

5/16" x 2 3/4" Bolt (89)

3/8" x 1 3/4" Bolt (94)

3/8" x 2 1/2" Bolt (105)

3/8" SAE Washer (113)

PART IDENTIFICATION CHART—Model No. 831.159831 R0502A

3/8" x 3 1/2" Carriage Bolt (95)

5/16" x 1" Shoulder Bolt (84) 5/16" x 2 3/4" Shoulder Bolt (108)

3/8" x 3 1/2" Bolt (111)

3/8" x 4 3/4" Bolt (102)

1” Tap Screw (80)

5/16" x 1 3/4" Bolt (96)

1/4" x 3/4" Bolt (98)

3/8" x 3" Bolt (88)

3/8" x 3 3/4" Bolt (101)

3/8" x 8" Bolt (106)

3/8" x 3 1/4" Bolt (104)

3/8" x 4" Bolt (78)

3/8" x 4 1/4" Bolt (85)

5/16" x 3" Bolt (107)

3/8" x 4" Carriage Bolt (112)

1” Retainer (54)

1" Cover Cap (55)

1" Square Inner Cap (69)

1 3/4" Square Inner Cap (68)

Round Inner Cap (63)

3/4" Round Inner Cap (64)

1" Round Inner Cap (66)

2" Square Inner Cap (67)

REMOVE THIS PART LIST/EXPLODED DRAWING

FROM THE MANUAL.

SAVE THIS PART LIST/EXPLODED DRAWING FOR FUTURE REFERENCE

Note: “#” indicates a non-illustrated part. Specifications are subject to change without notice.

1 1 Butterfly Base

2 1 Center Base

3 1 Press Base

4 1 Butterfly Upright

5 1 Press Upright

6 1 Upright Support

7 1 Butterfly Top Frame

8 1 Center Top Frame

9 1 Press Top Frame

10 1 Butterfly Seat Frame

11 1 Butterfly Leg

12 1 Press Seat Frame

13 1 Leg Lever

14 1 Leg Press Lever

15 1 Adjustment Tube

16 1 Leg Press Plate

17 1 Press Frame

18 2 Press Arm

19 1 Right Butterfly Arm

20 1 Left Butterfly Arm

21 1 Curl Post

22 1 Curl Pad

23 2 Seat

24 1 Press Backrest

25 1 Butterfly Backrest

26 2 Right Weight Guide

27 2 Left Weight Guide

28 2 Small Support Plate

29 2 Large Support Plate

30 3 Seat Plate

31 1 Double “U”-Bracket

32 4 Pulley Plate

33 2 “U”-Bracket

34 4 “V”-Pulley

35 25 3 1/2” Pulley

36 2 4 1/2” Pulley

37 4 Long Cable Trap

38 19 Cable Trap

39 2 Pulley Cover

40 1 Adjustment Pin

41 13 Weight

42 2 Top Weight

43 1 Long Weight Tube

44 1 Short Weight Tube

45 2 Weight Tube Bumper

46 4 Weight Bumper

47 1 Bottom Weight

48 1 Weight Plate

49 1 Curl Knob

50 2 Bumper

51 2 Pad Tube

52 4 Foam Pad

53 2 Large Foam Pad

54 4 1” Retainer

55 2 1” Cover Cap

56 1 Ab Strap

57 1 Chain

58 3 Cable Clip

59 1 Lat Bar

60 2 Plastic Bushing

61 2 Large Bushing

62 4 Handgrip

63 2 Round Inner Cap

64 4 3/4” Round Inner Cap

65 2 Butterfly Arm Bushing

66 2 1” Round Inner Cap

67 15 2” Square Inner Cap

68 7 1 3/4” Square Inner Cap

69 1 1” Square Inner Cap

70 1 Rear Cable

71 1 Low Cable

72 1 Press Cable

73 1 Butterfly Cable

74 1 Ab Cable

75 10 5/16” x 2 1/2” Carriage Bolt

76 1 3/8” x 2 1/2” Carriage Bolt

77 3 5/16” Nylon Jamnut

78 1 3/8” x 4” Bolt

79 5 1/4” x 2 1/2” Bolt

80 2 1” Tap Screw

81 2 Weight Pin

82 10 3/8” x 2 3/4” Bolt

83 1 Nylon Strap

84 2 5/16” x 1” Shoulder Bolt

85 1 3/8” x 4 1/4” Bolt

86 36 5/16” Nylon Locknut

87 5 5/16” x 2 1/2” Bolt

88 1 3/8” x 3” Bolt

89 14 5/16” x 2 3/4” Bolt

90 30 3/8” Nylon Locknut

91 3 1/4” x 2 1/2” Carriage Bolt

92 16 3/8” Nylon Jamnut

93 6 3/8” x 2” Bolt

94 6 3/8” x 1 3/4” Bolt

95 2 3/8” x 3 1/2” Carriage Bolt

96 3 5/16” x 1 3/4” Bolt

97 18 3/8” Washer

98 8 1/4” x 3/4” Bolt

99 10 1/4” Washer

100 9 5/16” Washer

101 7 3/8” x 3 3/4” Bolt

102 3 3/8” x 4 3/4” Bolt

103 5 1/4” Nylon Locknut

104 4 3/8” x 3 1/4” Bolt

105 2 3/8” x 2 1/2” Bolt

106 1 3/8” x 8” Bolt

107 4 5/16 x 3” Bolt

108 1 5/16” x 2 3/4” Shoulder Bolt

109 4 Medium Support Plate

110 2 Pro Pulley

111 1 3/8” x 3 1/2” Bolt

112 1 3/8” x 4” Carriage Bolt

113 4 3/8” SAE Washer

# 1 User’s Manual

# 1 Exercise Guide

PART LIST—Model No. 831.159831 R0502A

Key No. Qty. Description Key No. Qty. Description

38 35

35 38

109

41 27

110

109

38 35

50 52

110

109

56 57

58 2

51 52

64 13

109

68 89

112

8697

86 92

103

102

90 90

90 113

113

86 89

100 108

86 90

101

100

103

100

101

103

105

101

87 100

100

102

103

106

104

101

104

100

104

86 99

103

107

111

102

EXPLODED DRAWING—Model No. 831.159831 R0502A

Weider Pro Power Stack 831 159831 Users Manual

Weider-159831-Owner-S-Manual weider-159831-owner-s-manual

Weider-Pro-Power-Stack-System-15983-Users-Manual-733108 weider-pro-power-stack-system-15983-users-manual-733108

831.159831 to the manual c85d174b-d40a-4e0d-8093-6de399432559

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