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Model No. 831.159830 Serial No. The serial number is found in the location shown below. Write the serial number in the space above. Serial Number Decal SEARS, ROEBUCK AND CO. HOFFMAN ESTATES, IL 60179 CAUTION Read all precautions and instruc- tions in this manual before using this equipment.
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.
To help us assist you, please note the prod- uct model number and serial number before calling. The model number is 831.159830. The serial number can be found on a decal attached to the weight system (see the front cover of this manual).
ASSEMBLY 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.
Frame 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”...
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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).
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ADJUSTMENTS 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.
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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”...
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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).
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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.
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”...
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.
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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”...
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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”...
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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”...
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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).
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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).
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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”...
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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”...
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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”...
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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”...
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.
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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”...
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”...
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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.
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.
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.
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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).
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.
SEARS, ROEBUCK AND CO., DEPT. 817WA, HOFFMAN ESTATES, IL 60179 Part No. 183713 R0402A The model number and serial number of your WEIDER 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.
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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.
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3/4" Round Inner Cap (64) Round Inner Cap (63) 1” Retainer (54) 1" Square Inner Cap (69) 1" Round Inner Cap (66) 1" Cover Cap (55) 1 3/4" Square Inner Cap (68) 2" Square Inner Cap (67)
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5/16" x 1 3/4" Bolt (96) 5/16" x 1" Shoulder Bolt (84) 1” Tap Screw (80) 1/4" x 3/4" Bolt (98) 5/16" x 3" Bolt (107) 5/16" x 2 3/4" Shoulder Bolt (108) 3/8" x 3" Bolt (88) 3/8" x 3 1/4" Bolt (104) 3/8"...
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REMOVE THIS PART LIST/EXPLODED DRAWING FROM THE MANUAL. SAVE THIS PART LIST/EXPLODED DRAWING FOR FUTURE REFERENCE...
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PART LIST—Model No. 831.159830 Key No. Qty. Description Butterfly Base Center Base Press Base Butterfly Upright Press Upright Upright Support Butterfly Top Frame Center Top Frame Press Top Frame Butterfly Seat Frame Butterfly Leg Press Seat Frame Leg Lever Leg Press Lever...
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