
www.nordictrack.com
Model No. 831.21873.0
Serial No.
Write the serial number in the
space above for future reference.
Serial Number
_®
USER'S MANUAL
Decal
QUESTIONS?
As a manufacturer, we are commit-
ted to providing complete customer
satisfaction. If you have questions,
or if parts are missing, DO NOT
CONTACT THE STORE; please
contact Customer Care.
IMPORTANT: You must note the
product model number and serial
number (see the drawing above)
before contacting us:
CALL TOLL-FREE:
1-888-825-2588
Mon.-Fri., 6 a.m.-6 p.m. MT
Sat. 8 a.m.-4 p.m. MT
ON THE WEB:
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TABLE OF CONTENTS
WARNING DECAL PLACEMENT .............................................................. 2
IMPORTANT PRECAUTIONS ................................................................ 3
BEFORE YOU BEGIN ...................................................................... 4
ASSEMBLY ............................................................................... 5
HOW TO USE THE EXERCISE CYCLE ....................................................... 12
MAINTENANCE AND TROUBLESHOOTING ................................................... 21
EXERCISE GUIDELINES ................................................................... 23
PART LIST .............................................................................. 25
EXPLODED DRAWING .................................................................... 26
ORDERING REPLACEMENT PARTS .................................................. Back Cover
LIMITED WARRANTY .............................................................. Back Cover
WARNING DECAL PLACEMENT
This drawing shows the location(s) of the
warning decal(s). If a decal is missing or
illegible, see the front cover of this
manual and request a free replacement
decal. Apply the decal in the location
shown. Note: The decal(s) may not be
shown at actual size.
Misuse of this machine
may result in serious
injury.
• Read user's manual
prior touse and follow
aft warnings and
instructions.
• Do not allow children
on or around machine.
• User weight must not
exceed 300 pounds.
• Replace Jabelif
damaged,
iflegible, or _ __
removed. L_
NordicTrack is a registered trademark of ICON IP, Inc.
2

IMPORTANT PRECAUTIONS
_ WARNING: To reduce the risk of serious injury, read all important precautions and
instructions in this manual and all warnings on your exercise cycle before using your exercise
cycle. ICON assumes no responsibility for personal injury or property damage sustained by or
through the use of this product.
.
Before beginning any exercise program, con- 7.
suit your physician. This is especially
important for persons over the age of 35 or
persons with pre-existing health problems. 8.
.
Use the exercise cycle only as described in
this manual.
Keep children under age 12 and pets away
from the exercise cycle at all times.
Wear appropriate clothes while exercising;
do not wear loose clothes that could become
caught on the exercise cycle. Always wear
athletic shoes for foot protection.
3. It is the responsibility of the owner to ensure
that all users of the exercise cycle are ade-
quately informed of all precautions.
.
The exercise cycle is intended for home use
only. Do not use the exercise cycle in a com-
mercial, rental, or institutional setting.
.
Keep the exercise cycle indoors, away from
moisture and dust. Place the exercise cycle
on a level surface, with a mat beneath it to
protect the floor or carpet. Make sure that
there is at least 2 ft. (0.6 m) of clearance
around your exercise cycle.
.
Inspect and properly tighten all parts regu-
larly. Replace any worn parts immediately.
9. The exercise cycle should not be used by
persons weighing more than 300 Ibs.
(136 kg).
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 while using
the exercise cycle; do not arch your back.
12.
If you feel pain or dizziness while exercising,
stop immediately and cool down.
3

BEFORE YOU BEGIN
Congratulations for selecting the new NordicTrack ®C3
Sl exercise cycle. Cycling is one of the most effective
exercises for increasing cardiovascular fitness, building
endurance, and toning the entire body. The C3 Sl
exercise cycle offers an impressive array of features to
let you enjoy this healthful exercise 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
Handlebar
Water Bottle Holder*--
after reading this manual, please see the front cover
of this manual. To help us assist you, note the product
model number and serial number before contacting
us. The model number and the location of the serial
number decal are shown on the front cover of this
manual.
Before reading further, please familiarize yourself with
the parts that are labeled in the drawing below.
Console
Upright Knob
Backrest
Seat
Handle
Pedal/Strap
Wheel
Leveling Foot
Handgrip Pulse Sensor
Seat Handle
*Water bottle is not included
4

ASSEMBLY
Assembly requires two persons. Place all parts of the exercise cycle in a cleared area and remove the pack-
ing materials. Do not dispose of the packing materials until assembly is completed.
In addition to the included tool(s), assembly requires a Phillips screwdriver (_====o and an
adjustable wrench _:_.
As you assemble the exercise cycle, use the drawings below to identify small parts. The number in parentheses
below each drawing is the key number of the part, from the PART LIST near the end of this manual. The number
following the parentheses is the quantity needed for assembly. Note: Some small parts may have been pre-
assembled. If a part is not in the hardware kit, check to see if it has been preassembled.
M8 Locknut
(61)-4
M6 x 18mm Patch
Screw (77)-2
M8 x 16mm Patch
Screw (54)-6
M10 x 32mm
Button Bolt (78)-2
M10 Locknut
(64)-2
M8 x 38mm Button
M6 Washer
M6 x 38mm Patch
Screw (81)-4
Bolt (72)-4
M8 Split
(44)-4
M10 x 63mm Bolt Set (62)-1
Washer (55)-10
M4 x 16mm Flange
Screw (80)-4
M6 x 42mm Patch
Screw (51)-2
M8 x 55mm Patch
Screw (52)-4
5

Orient the Right Front Stabilizer (40) with the
Wheel (17) positioned as shown.
Attach the Right Front Stabilizer (40) to the right
side of the Frame (1) with three M8 x 16mm
Patch Screws (54) and three M8 Split Washers
(55).
Attach the Left Front Stabilizer (not shown)
to the left side of the Frame (1) in the same
way.
.
While another person lifts the rear of the Frame
(1), attach the Rear Stabilizer (16) to the Frame
with four M8 x 55mm Patch Screws (52) and
four M8 Split Washers (55).
54
40
17
54
1
\
16
52
6

.
While another person holds the Upright (2) near
the Frame (1), locate the wire tie in the Upright.
79
See the inset drawing. Tie the lower end of
the wire tie to Pulse Extension Wire (79) and to
the Main Wire Harness (43). Next, pull the other
end of the wire tie upward out of the top of the
Upright (2). Then, untie and discard the wire tie.
Tip: Do not allow the ends of the wires to fall
into the Upright. Use a piece of tape or an
elastic band to hold the wires in place until
step 6.
Tip: Avoid pinching the wires. Attach the
Upright (2) to the Frame (1) with an M10 x
63mm Bolt Set (62).
.
Identify the Right and Left Handlebars (59, 60),
which are marked with "Right" and "Left" stickers.
Wire Tie
79 43
62
62
Avoid pinching
the wires
Orient the Right and Left Handlebars (59, 60)
so that the hexagonal holes are in the indi-
cated locations.
Attach each Handlebar (59, 60) to the Upright
(2) with two M8 x 38mm Button Bolts (72) and
two M8 Locknuts (61). Make sure that the
Locknuts are in the hexagonal holes.
Hexagonal
Holes
72
7

.
The Console (4) can use four 1.5V D batteries
(not included); alkaline batteries are recom-
mended. IMPORTANT: If the Console has
been exposed to cold temperatures, allow it
to warm to room temperature before insert-
ing batteries. Otherwise, you may damage
the console displays or other electronic
components. Remove the screw, remove the
battery cover, insert the batteries into the bat-
tery compartment, and then reattach the battery
cover. Make sure to orient the batteries as
shown by the diagrams inside the battery
compartment.
To purchase an optional AC adapter, contact
the store where you purchased this product
or call the telephone number on the cover of
this manual. To avoid damaging the console,
use only a manufacturer-supplied AC
adapter. Plug one end of the AC adapter into
the jack on the console; plug the other end into
an outlet installed in accordance with all local
codes and ordinances.
Battery
Cover
Screw_
Batteries _ Batteries
.
While another person holds the Console (4)
near the Upright (2), connect the console wire
to the Main Wire Harness (43). Then, connect
the console pulse wires to the Pulse Extension
Wire (79).
Insert the excess wire downward into the
Upright (2).
Tip: Avoid pinching the wires. Attach the
Console (4) to the Upright (2) with four M4 x
16mm Flange Screws (80).
Pulse Wires
9 2
80
Console
Wire
Avoid pinching
the wires
8

Identify and orient the Seat Handlebar (11) so
7. 7
that the contacts on the Pulse Grips (10) face
upward. Make sure that the hexagonal holes
are in the indicated locations.
Tip: Avoid pinching the Pulse Wire (58).
Attach the Seat Handlebar (11) to the Seat
Carriage (3) with two M10 x 32mm Button Bolts
(78) and two M10 Locknuts (64). Do not fully
tighten the Locknuts yet.
78
11
Hexagonal
Holes
10
Avoid pinching the
Pulse Wire (58)
.
Tip: Avoid pinching the Pulse Wire (58).
Attach the Backrest (8) to the Seat Carriage (3)
with two M6 x 18mm Patch Screws (77) and
two M6 x 42mm Patch Screws (51).
Tip: First tighten the M6 x 18mm Patch
Screws (77), and then tighten the M6 x
42mm Patch Screws (51).
See step 7. Tighten the M10 Locknuts (64).
8
51
77
9