Weider PRO 3750 User Manual
USER'S MANUAL
QUESTIONS?
As a manufacturer, we are
committed to providing complete
customer satisfaction. If you
have questions, or if there are
missing or damaged parts, we
will guarantee complete satisfaction through direct assistance
from our factory.
TO AVOID UNNECESSARY
DELAYS, PLEASE CALL DIRECT
TO OUR TOLL-FREE CUSTOMER
HOT LINE. The trained technicians on our customer hot line
will provide immediate assistance, free of charge to you.
CUSTOMER HOT LINE:
1-800-999-3756
Mon.–Fri., 6 a.m.–6 p.m. MST
Model No. WESY26330
Serial No.
Write the serial number in the space
above for future reference.
CAUTION
Read all precautions and instructions in this manual before using
this equipment. Save this manual
for future reference.
Serial Number Decal (Under Seat)
Visit our website at
www.weiderfitness.com
new products, prizes,
fitness tips, and much more!
2
TABLE OF CONTENTS
IMPORTANT PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
BEFORE YOU BEGIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
ADJUSTMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
WEIGHT RESISTANCE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
TROUBLESHOOTING AND MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
CABLE DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
ORDERING REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover
LIMITED 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.
WEIDER is a registered trademark of ICON Health & Fitness, Inc.
IMPORTANT PRECAUTIONS
3
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 adequately 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 surface. Cover the floor 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 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 300 pounds.
10. Always stand on the foot plate when performing 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
handle 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 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.
14. If you feel pain or dizziness at any time while
exercising, stop immediately and begin cooling down.
15. The decals shown here have been attached
to the weight system in the locations shown
on page 4. If a decal is missing or illegible,
please call toll-free 1-800-999-3756 to order a
free replacement decal. Apply the decal in
the location shown.
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. ICON assumes no responsibility for personal injury or property
damage sustained by or through the use of this product.
• Misuse of this
product may result in
serious injury.
WARNING
!
• Read user’s manual
and follow all warnings
and operating instructions prior to use.
• Replace label if
damaged, illegible,
or removed.
• Do not allow children
on or around machine.
Keep hands and
fingers clear of
this area.
• Keep clear of
this area.
Decal 3
Decal 1
Decal 2
4
BEFORE YOU BEGIN
ASSEMBLED
DIMENSIONS:
Height: 78 in.
Width: 64 in.
Length: 70 in.
Foot Plate
Low Pulley
Station
High Pulley Station
Lat Bar
Leg Lever
Butterfly Arms
Press Arm
Weight Stacks
Backrests
Leg Press
Plate
Ab Pulley Station
Thank you for selecting the versatile WEIDER®PRO
3750 weight system. The 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 specific
results you want.
For your benefit, read this manual carefully before
using the weight system. If you have additional
questions, please call our Customer Service
Department toll-free at 1-800-999-3756, Monday
through Friday, 6 a.m. until 6 p.m. Mountain Time
(excluding holidays). To help us assist you, please
note the product model number and serial number
before calling. The model number is WESY26330. 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.
Decal1
Decal 2
Decal 3
Decal 3
5
ASSEMBLY
Make sure you have the following tools:
• Two (2) adjustable wrenches
• One (1) standard screwdriver
• One (1) phillips screwdriver
• One (1) 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 drawings.
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 Customer Service
Department toll-free at 1-800-999-3756, Monday
through Friday, 6 a.m. until 6 p.m. Mountain Time.
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 assembled successfully by anyone. Before begin-
ning assembly, make sure to read the
information on this page; this brief introduction 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.
1.
Locate and open the parts bags labeled
“FRAME ASSEMBLY BAG ONE” and
“FRAME ASSEMBLY BAG TWO.”
Press two 2” Square Outer Caps (58) onto the
Weight Base (14) in the indicated locations.
Press a 2” Square Inner Cap (56) into the end
of the Weight Base.
Insert six 5/16” x 2 1/2” Carriage Bolts (49) up
through the Press Base (13) and the Weight
Base (14).
Attach the Press Base (13) to the Weight
Base (14) with two 5/16” x 2 3/4” Bolts (55),
two 5/16” Washers (20), and two 5/16” Nylon
Locknuts (40). Do not tighten the Locknuts
yet.
2. Slide the Ab Upright (1) onto the indicated
5/16” x 2 1/2” Carriage Bolts (49) in the
Weight Base (14). Hand tighten two 5/16”
Nylon Locknuts (40) onto the Carriage Bolts.
Do not tighten the Locknuts yet.
Slide the Leg Press Upright (4) onto the indicated 5/16” x 2 1/2” Carriage Bolts (49) in the
Press Base (13). Hand tighten two 5/16”
Nylon Locknuts (40) onto the Carriage Bolts.
Do not tighten the Locknuts yet.
3. Press a 2” Square Inner Cap (56) into each
end of the Top Frame (2). Press a 2” Square
Inner Cap (56) into each side of the Butterfly
Frame (3). Press two 1” Inner Caps (98) into
the top of the Butterfly Frame.
Attach the Butterfly Frame (3) to the Top
Frame (2) with a 5/16” x 3” Bolt (92) and a
5/16” Nylon Jamnut (91). Make sure that the
Bolt is on the side shown. Finish attaching
the Butterfly Frame (3) to the Top Frame (2)
with a 5/16” x 2 3/4” Bolt (55), a 5/16” Washer
(20), and a 5/16” Nylon Locknut (40). Do not
tighten the Locknut and Jamnut yet.
2
3
FRAME ASSEMBLY
6
1
4
40
40
49
49
13
2
3
14
55
40
20
56
56
56
56
92
98
91
1
56
58
58
55
20
49
40
49
13
14
Before you begin this step, make sure
that you have read all of the information
on page 5. This brief introduction will
save you much more time than it takes
to read it.
4. Slide the Front Seat Frame (8) onto the indicated 5/16” x 2 1/2” Carriage Bolts (49) in the
Press Base (13). Hand tighten two 5/16”
Nylon Locknuts (40) onto the Carriage Bolts.
Do not tighten the Locknuts yet.
Attach the other end of the Front Seat Frame
(8) to the Leg Press Upright (4) with two 5/16”
x 2 3/4” Bolts (55), two 5/16” Washers (20),
and two 5/16” Nylon Locknuts (40). Do not
tighten the Locknuts yet.
Press a 2” Square Inner Cap (56) into the
Front Seat Frame (8).
5. Insert two Weight Guides (23) into one of the
brackets on the Weight Base (14). Attach the
lower ends of the Weight Guides with a 5/16”
x 6” Bolt (67), two 1/2” x 3/4” Spacers (69),
and a 5/16” Nylon Locknut (40). Do not over-
tighten the Locknut.
Attach the other Weight Guides (23) in the
same manner.
6. Slide a Weight Bumper (27) onto each of the
Weight Guides (23).
Slide eight Weights (90) onto each set of
Weight Guides (23). Be sure that the pin
grooves are on the indicated side of each
stack of Weights.
7. Press a Weight Tube Bumper (26) into each
Weight Tube (25).
Insert a Weight Tube (25) into each stack of
Weights (90). Be sure that the pins on the
Weight Tubes are in the pin grooves in the
upper Weights.
7
6
7
FRAME ASSEMBLY
90
90
Pin
Grooves
27
27
23
23
26
25
Pin
Grooves
90
90
5
67
69
23
23
40
14
4
55
20
49
40
56
8
40
4
13
8. Lubricate the insides of the indicated holes in
the Top Weights (24). Slide a Top Weight onto
each set of Weight Guides (23).
9. Attach the Top Frame (2) to the Ab Upright (1)
with two 5/16” x 2 3/4” Bolts (55), two 5/16”
Washers (20), and two 5/16” Nylon Locknuts
(40). Do not tighten the Locknuts yet.
Attach the Butterfly Frame (3) to the Leg
Press Upright (4) with two 5/16” x 2 3/4” Bolts
(55), two 5/16” Washers (20), and two 5/16”
Nylon Locknuts (40). Do not tighten the
Locknuts yet.
10. Attach the upper ends of one set of Weight
Guides (23) to the Top Frame (2) with a 5/16”
x 6” Bolt (67), two 1/2” x 3/4” Spacers (69),
and a 5/16” Nylon Locknut (40).
Attach the upper ends of the other set of
Weight Guides (23) to the Top Frame (2) in
the same manner.
Before continuing, firmly tighten all the
5/16” Nylon Locknuts (40) and the 5/16”
Nylon Jamnut (91) used in steps 1–10.
8
10
8
FRAME ASSEMBLY
23
Lubricate
Lubricate
23
23
69
40
67
67
40
2
69
24
23
9
55
55
20
20
40
40
4
3
2
1
11. Press a 1 3/4” Square Inner Cap (48) into the
Adjustment Tube (10).
Attach the Leg Press Plate (11) to the
Adjustment Tube (10) with a 5/16” x 2 1/2”
Bolt (39), two 5/16” Washers (20), and a 5/16”
Nylon Locknut (40). Be sure that the Leg
Press Plate and Adjustment Tube are oriented as shown.
12. Attach the Adjustment Tube (10) to the Leg
Press Arm (9) with the Lock Pin (73). Be sure
the Leg Press Plate (11) is oriented as
shown.
Press two 2” Square Inner Caps (56) into the
Leg Press Arm (9).
13. Locate and open the parts bag labeled
“ARM ASSEMBLY.”
Attach the Leg Press Bumper (53) to the
Front Seat Frame (8) with the 1” Tap Screw
(72).
Lubricate the 3/8” x 3 1/4” Bolt (71) with
grease. Attach the Leg Press Arm (9) to the
Press Base (13) with the Bolt and a 3/8”
Nylon Locknut (42).
14. Press a 1” x 7/8” Plastic Bushing (54) onto
each welded spacer on the Press Frame (12).
Slide the Press Frame onto the Press Base
(13) so that the Plastic Bushings are aligned
with the indicated tube. Note: This will be a
tight fit. Make sure that the high hole is on
the side shown.
Lubricate the 3/8” x 8” Bolt (52) with grease.
Attach the Press Frame (12) to the Press
Base (13) with the Bolt and a 3/8” Nylon
Locknut (42).
14
11
12
13
9
ARM ASSEMBLY
20
40
39
Angle
10
48
11
56
56
42
Lubricate
71
53
72
13
54
42
12
13
11
9
9
8
10
73
Lubricate
52
Tube
Welded
Spacers
High
Hole
FRAME ASSEMBLY
10
15. Attach a Press Arm (7) to one side of the
Press Frame (12) with two 5/16” x 2 1/2” Bolts
(39) and two 5/16” Nylon Locknuts (40).
Attach the other Press Arm (7) to the
Press Frame (12) in the same manner.
16. Press a 1” Round Inner Cap (70) into one of
the Press Arms (7). Press a 1 3/4” Square
Inner Cap (48) into the Press Arm.
Repeat this step for the other Press Arm
(not shown).
17. Lubricate both axles on the Butterfly Frame (3).
Refer to the drawing and identify the Right Fly
Arm (5) and the Left Fly Arm (6).
Press a 1 3/4” Square Inner Cap (48) into the
upper end of the Left Fly Arm (6). Slide the
Left Fly Arm onto the indicated axle. Note: Do
not to confuse the Left Fly Arm with the
Right Fly Arm (5). Make sure that the upper
end of the Left Fly Arm is behind the indicated bracket on the Butterfly Frame (3).
IMPORTANT NOTE: Before assembling the
1” Retainers (45) used in this step, be sure
that you thoroughly understand the step.
The Retainers can be assembled only once.
If they must be removed, you will need to
order new Retainers.
Tap two 1” Retainers (45) and a 1” Round
Outer Cap (46) onto the axle. Be sure that
the teeth on the Retainers bend toward the
Round Outer Cap, as shown in the inset
drawing.
Attach the Right Fly Arm (5) in the same
manner.
15
16
17
ARM ASSEMBLY
39
7
70
40
48
12
7
7
3
Lubricate Axle
Axle
6
5
45
48
46
Bracket
45
46
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