Pro-Form 831.283120 User manual

BIKE EXERCISER
User’s Manual
CAUTION
Read all precautions and instruc-
tions in this manual before using
this equipment. Keep this manual
for future reference.
Serial
Number
Decal
Model No. 831.283120
Serial No.
Write the serial number in the
space above for reference.
Patent Pending
• Assembly
• Operation
• Maintenance
• Part List and Drawing
Sears, Roebuck and Co., Hoffman Estates, IL 60179

2
TABLE OF CONTENTS
IMPORTANT PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
BEFORE YOU BEGIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
ASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
HOW TO OPERATE THE EXERCISE CYCLE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
MAINTENANCE AND TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
CONDITIONING GUIDELINES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
PART LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
EXPLODED DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
HOW TO ORDER REPLACEMENT PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover
FULL 90 DAY WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Back Cover

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1. Read all instructions in this manual before
using the exercise cycle.
2. Use the exercise cycle only as described in
this manual.
3. It is the responsibility of the owner to ensure
that all users of the exercise cycle are ade-
quately informed of all precautions.
4. The exercise cycle is intended for home use
only. Do not use the exercise cycle in
a commercial, rental, or institutional setting.
5. Place the exercise cycle indoors on a level
surface. Keep the exercise cycle away from
moisture and dust. Place a mat under the
exercise cycle to protect the floor.
6. Inspect and properly tighten all parts regular-
ly. Replace any worn parts immediately.
7. Keep children under the age of 12 and pets
away from the exercise cycle at all times.
8. Wear appropriate clothing when exercising;
do not wear loose clothing that could become
caught on the exercise cycle. Always wear
athletic shoes for foot protection.
9. The exercise cycle should not be used by
persons weighing more than 250 pounds.
10.The pulse sensor is not a medical device.
Various factors, including the user's move-
ment, may affect the accuracy of heart rate
readings. The pulse sensor is intended only
as an exercise aid in determining heart rate
trends in general.
11.Always keep your back straight when using
the exercise cycle; do not arch your back.
12.If you feel pain or dizziness while exercising,
stop immediately and cool down.
13.The exercise cycle does not have a free-
wheel; the pedals will continue to move until
the flywheel stops.
14. The decal shown below has been placed on
the exercise cycle. If the decal is missing, or
if it is not legible, 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. Sears assumes no responsibility for personal injury or property
damage sustained by or through the use of this product.
IMPORTANT PRECAUTIONS
WARNING:To reduce the risk of serious injury, read the following important precau-
tions before using the exercise cycle.

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Congratulations for selecting the new PROFORM®
GL36 exercise cycle. Cycling is one of the most effec-
tive exercises for increasing cardiovascular fitness,
building endurance, and toning the entire body. The
PROFORM®GL36 exercise cycle offers an impressive
array of features to let you enjoy this healthful exer-
cise in the convenience and privacy of your home.
For your benefit, read this manual carefully before
you use the exercise cycle. If you have questions
after reading this manual, call 1-800-4-MY-HOME®
(1-800-469-4663). To help us assist you, please note
the product model number and serial number before
calling. The model number is 831.283120. The serial
number can be found on a decal attached to the exer-
cise cycle (see the front cover of this manual).
Before reading further, please familiarize yourself with
the parts that are labeled in the drawing below.
*No water bottle is included
Handgrip Pulse Sensor
REAR
FRONT
Seat
Adjustment Knob
Pedal/Strap
Wheel
Leveling Foot
Console
Fan
Handlebar
Adjustment Knob
Water Bottle Holder*
Adjustment Knob
RIGHT SIDE
BEFORE YOU BEGIN

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ASSEMBLY
Assembly requires two persons. Place all parts of the exercise cycle in a cleared area and remove the packing
materials. Do not dispose of the packing materials until assembly is completed.
Assembly requires the included tools and your own adjustable wrench and Phillips screw-
driver .
Use the part drawings below to identify the small parts used in assembly. The number in parenthesis below
each drawing refers to the key number of the part, from the PART LIST on page 22. The second number refers
to the quantity needed for assembly. 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.
Note: If a part is not in the parts bag, first check to see if it has been pre-assembled. If a part is missing,
call toll-free 1-800-999-3756.
M10 Black Nylon
Locknut (63)–4
M6 x 25.4mm Button
Screw (33)–1 M8 x 14mm Button
Screw (49)–1 M8 x 22mm Button
Screw (74)–4 M8 x 39mm Button
Bolt (64)–2
M4 x 16mm
Screw (66)–6
M8 Split
Washer (70)–4
M8 Nylon
Locknut (10)–6 M4 x 22mm
Screw (21)–2
M10 x 112mm Carriage Bolt (65)–4

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1. Identify the Front Stabilizer (2). While another person
lifts the front of the Frame (1), attach the Front
Stabilizer to the Frame with two M10 x 112mm
Carriage Bolts (65) and two M10 Black Nylon Locknuts
(63). Make sure that the Front Stabilizer is turned
so the Wheels (30) are not touching the floor.
2
63
30
30
65
1
1
2. While another person lifts the rear of the Frame (1),
attach the Rear Stabilizer (3) to the Frame with two
M10 x 112mm Carriage Bolts (65) and two M10 Black
Nylon Locknuts (63).
65
3
1
3
13
9
21
Make sure the
wire harnesses
do not get
pinched and
damaged during
this step.
28
36
Slot Rod
35
33
1
3. While another person holds the Upright (13) in the
position shown, connect the Upper Wire Harness (36)
to the Lower Wire Harness (35). Carefully pull the
upper end of the Upper Wire Harness to remove
any slack from the Wire Harnesses; make sure that
the connectors do not catch on the indicated rod.
Turn the indicated Adjustment Knob (28) counterclock-
wise two or three turns to loosen it. Next, pull the Knob,
insert the Upright (13) into the Frame (1), and then
release the Knob. Be careful to avoid pinching the
Wire Harnesses (35, 36). Move the Upright up and
down slightly until the pin on the Knob snaps into
one of the holes in the Upright. Then, turn the Knob
clockwise until it is tight.
Tighten the M6 x 25.4mm Button Screw (33) into the
Frame (1) and into the slot in the side of the Upright (13).
Attach the Water Bottle Holder (9) to the Upright (13)
with two M4 x 22mm Screws (21).
263
63

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5. While another person holds the Console (16) in the
position shown, connect the wire harness on the
Console to the Upper Wire Harness (36). Insert the
excess wire harness into the Upright (13).
Attach the Console (16) to the Upright (13) with four
M4 x 16mm Screws (66). Be careful to avoid pinch-
ing the wire harnesses.
7. Turn the indicated Adjustment Knob (28) counterclock-
wise two or three turns to loosen it. Next, pull the Knob,
insert the Seat Post (5) into the Frame (1), and then
release the Knob. Move the Seat Post up and down
slightly until the pin on the Knob snaps into one of
the holes in the Seat Post. Then, turn the Knob clock-
wise until it is tight.
1
5
28
4. Slide the two Handlebar Collars (7) onto the Left
Handlebar (50). Insert the Right Handlebar (51) into
the Left Handlebar. Connect the Handlebar Collars, the
Left Handlebar, and the Right Handlebar with two M4 x
16mm Screws (66).
Attach the Handlebar Bracket (15) to the Left and
Right Handlebars (50, 51) with four M8 x 22mm Button
Screws (74).
Attach the Handlebar Bracket (15) to the Upright (13)
with two M8 x 39mm Button Bolts (64), two M8 Nylon
Locknuts (10), and an M8 x 14mm Button Screw (49).
64
66
66
7
7
10 49
4
7
15
13
74
74
50
51
5
16
13
66
66
36
Wire
Harness
6. The Console (16) requires four “D” batteries (not
included); alkaline batteries are recommended. Pull
the battery drawer open. Insert four batteries into the
battery drawer. Make sure that the batteries are ori-
ented as shown by the markings inside the battery
drawer. Close the battery drawer. Note: When the bat-
teries are installed correctly, the fan will turn on for a
moment.
16 Batteries
Battery
Drawer
6

8
10.Make sure that all parts are properly tightened before you use the exercise cycle. Note: After assembly is
completed, some extra parts may be left over. Place a mat beneath the exercise cycle to protect the floor.
9. Identify the Left Pedal (24), which is marked with an
“L.” Using an adjustable wrench, firmly tighten the
Left Pedal counterclockwise into the Left Crank Arm
(42). Tighten the Right Pedal (not shown) clockwise
into the Right Crank Arm. Important: Tighten both
Pedals as firmly as possible. After using the exer-
cise cycle for one week, retighten the Pedals. For
best performance, the Pedals must be kept tight-
ened.
Adjust the Left Pedal Strap (25) to the desired position,
and press the end of the Pedal Strap onto the tab on
the Left Pedal (24). Adjust the Right Pedal Strap (not
shown) in the same way.
9
24
42
25
Tab
8. Attach the Seat (12) to the Seat Bracket (6) with four
M8 Nylon Locknuts (10) and four M8 Split Washers
(70). Note: The Nylon Locknuts and the Split Washers
may be pre-attached to the underside of the Seat.
Turn the indicated Adjustment Knob (28) counterclock-
wise two or three turns to loosen it. Next, pull the Knob,
slide the Seat Bracket (6) into the top of the Seat Post
(5), and then release the Knob. Move the Seat
Bracket forward and backward slightly until the pin
on the Knob snaps into one of the holes in the Seat
Bracket. Then, turn the Knob clockwise until it is tight.
5
10
70
6
12
70
10
28
8

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HOW TO OPERATE THE EXERCISE CYCLE
HOW TO ADJUST THE SEAT POST
For effective exer-
cise, the seat
should be at the
proper height. As
you pedal, there
should be a slight
bend in your knees
when the pedals
are in the lowest
position. To adjust
the height of the
seat, first turn the
indicated knob counterclockwise two or three turns to
loosen it (if the knob is not loosened enough, it may
scratch the seat post). Next, pull the knob, slide the
seat post to the desired height, and then release the
knob. Move the seat post up and down slightly until
the pin on the knob snaps into one of the holes in
the seat post. Then, turn the knob clockwise until it is
tight.
HOW TO ADJUST THE SEAT
The seat can be
adjusted to the
position that is the
most comfortable
for you. Before
adjusting the seat,
dismount the
exercise cycle; do
not adjust the
seat while you are
sitting on it. To
adjust the seat, first
turn the indicated knob counterclockwise two or three
turns to loosen it (if the knob is not loosened enough, it
may scratch the seat bracket). Next, pull the knob,
slide the seat to the desired position, and then release
the knob. Move the seat bracket forward and back-
ward slightly until the pin on the knob snaps into
one of the holes in the seat bracket. Then, turn the
knob clockwise until it is tight.
HOW TO ADJUST THE UPRIGHT
The upright can be
adjusted to the
height that is the
most comfortable for
you. To adjust the
upright, first turn the
indicated knob
counterclockwise
two or three turns to
loosen it (if the knob
is not loosened
enough, it may
scratch the upright).
Next, pull the knob,
slide the upright to
the desired height,
and then release
the knob. Move the upright up and down slightly
until the pin on the knob snaps into one of the
holes in the upright. Then, turn the knob clockwise
until it is tight.
HOW TO ADJUST THE PEDAL STRAPS
To adjust the pedal
straps, first pull the
ends of the straps
off the tabs on the
pedals. Adjust the
straps to the
desired position,
and press the ends
of the straps back
onto the tabs.
Pedal
Strap
Tab
Upright
Knob
Seat
Post Knob
Seat
Seat
Bracket
Seat
Knob

10
FEATURES OF THE CONSOLE
The advanced console offers a selection of features
designed to make your workouts more enjoyable and
effective. When the manual mode of the console is
selected, the resistance of the pedals can be changed
with the touch of a button. As you pedal, the console
will provide continuous exercise feedback. You can
even measure your heart rate using the built-in hand-
grip pulse sensor.
The console also offers four Smart programs. Each pro-
gram automatically changes the resistance of the ped-
als and prompts you to increase or decrease your pace
as it guides you through an effective workout.
In addition, the console features two Heart Rate pro-
grams that change the resistance of the pedals and
prompt you to vary your pace to keep your heart rate
near a target heart rate as you exercise.
The console also features iFIT.com interactive technol-
ogy. Having iFIT.com technology is like having a per-
sonal trainer in your home. Using a stereo audio cable
(available at electronics stores), you can connect the
exercise cycle to your home stereo, portable stereo,
computer, or VCR and play special iFIT.com CD and
video programs (iFIT.com CDs and videocassettes are
available separately). iFIT.com CD and video programs
automatically control the resistance of the pedals and
prompt you to vary your pace as a personal trainer
coaches you through every step of your workout. High-
energy music provides added motivation. To purchase
iFIT.com CDs and videocassettes, call toll-free 1-
800-735-0768.
With the exercise cycle connected to your computer,
you can also go to our Web site at www.iFIT.com and
access programs directly from the internet. Explore
www.iFIT.com for more information.
To use the manual mode of the console, see page
11. To use a Smart program, see page 13. To use a
Heart Rate program, see page 14. To use an
iFIT.com CD or videocassette, see page 18. To use
a program directly from our Web site, see page 19.
Display Buttons
Fan Button
On/Reset Button
Resistance Buttons