Weider 831.159831 Adjustment Pin 40. Note The lip on, ADJUSTMENTS, beginning on the following

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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” 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).

65
Lip	87	15	40
	87
	100
			68
			14
	100		86
	16
66
64
	52
	51		64
			64
			52
	13
	11
			64
67
	22		98
	22
	21

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.

24

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Contents Model No Serial No Serial Number DecalSEARS, Roebuck and CO Hoffman ESTATES, IL Patent PendingTable of Contents Important Precautions Using the Power Stack weight system Before YOU BeginDecal Assembly Cable AssemblyArm Assembly To open the parts bag for that stageFrame Assembly Locate and open the parts bag labeledTape over the head of each Bolt Onto the Bolts. Do not tighten the Nylon Locknuts yet 109100 Yet Do not Tighten the Nylon Locknuts yetLocknuts 86. Do not tighten the Nylon Locknuts yet Press a 2 Square Inner Cap 67 into the Press Top Frame On bottomInto On the Short Weight Tube On the bottomMust be behind the Center Top Frame, as shown in step Locknuts 90. Do not tighten the Nylon Locknuts yetNylon Locknuts yet Nylon JamnutsAssembly Pages 30 Identify the Butterfly Cable Pulley BAG 2. Remove one V-PulleyBag for identification of the Pro Pulleys Bracket onLabeled Pulley BAG Bracket On the back of the Butterfly UprightEd as shown Identify the Rear CableIdentify the Ab Cable 74. It is approximately Pulley and the pin on the Upright103 Large tabsRemove the 3 1/2 Pulleys 35 from the other Groove of the PulleyMake sure Direction shown Be removed in stepPulley Is attached as shownIdentify the Low Cable 71. It is approximately Hold the Cable in the groove of the PulleyCable in the groove of the Pulley Cable Trap 38 to the 3/8 x 4 3/4 Bolt With the 3/8 Nylon JamnutIdentify the Press Cable 72. It is approximately Pulley and the pin on the Press Top FrameTo hold the Cable in the groove of the Pulley Wrap the Press Cable 72 around a V-PulleyWrap the Press Cable 72 around a 3 1/2 Pulley Route the Press Cable 72 through the Press Pulley onto the 3/8 x 4 3/4 Bolt102 3835 With a 3/8 Nylon Jamnut 92. Make sure Seat Assembly Locate and open the parts bag labeled SeatAdjustment Pin 40. Note The lip on ADJUSTMENTS, beginning on the followingLeg Press Plate 16 must be on the upper edge Adjustments Attaching the Accessories to a Pulley StationAdjusting the LEG Press Plate Attaching the Curl PADChanging the Weight Setting To change the setting of a weight stack, insert aWeight stack. Turn the bent end down Weight Resistance Chart High Press LEGLEG LOW Pulley ARM Press Lbs Left TopTroubleshooting and Maintenance Tightening the CablesHole with the Bolt, Washer, and Nylon Locknut 104 Cable Diagrams Cable ID Chart70, 95 1/8 71, 142 1/8 74, 226 1/2 72, 387 5/8 Low Cable Rear Cable Ab Cable Butterfly Cable Full 90 DAY Warranty SEARS, Roebuck and CO., Hoffman ESTATES, ILSEARS, Roebuck and CO., Dept WA, Hoffman ESTATES, IL This Part Identification CHART-Model No R0502APage Round Inner Cap Save this Part LIST/EXPLODED Drawing for Future Reference Qty Description Key No. Qty Exploded DRAWING-Model No