Stairmaster MOMENTUM C40 User manual

MOMENTUM
3400 CE/3800 RC
OWNER’SMANUAL
C40 O WNER ’ S M ANUAL

Page iii
© 2001 StairMaster Health & Fitness Products, Inc. StairMaster is a registered
trademark of StairMaster Health & Fitness Products, Inc. in the
United States and other countries. StairMaster is a Rutledge Capital company.
P/N 25559-A
Printed in the United States.
© 2001 StairMasterHealth & Fitness Products, Inc.
All rights reserved.
Corporate Headquarters
12421 Willows Road N.E., Suite 100
Kirkland, WA 98034
[phone]
[phone]
Fax [phone]
www.stairmaster.com

Page iv
WARRANTY
This is to certify that the StairMaster®Momentum systems cycle ergometer is
warranted for a period of three years by StairMaster Health & Fitness Products,
Inc. to be free of all defects in materials and workmanship. This warranty does
not apply to any defect caused by negligence, misuse, accident, alteration,
improper maintenance, or an “act of God.” This warranty is nontransferable from
the original owner.
If, within three years from the date of purchase, any part of the
StairMaster Momentum systems cycle ergometer should fail to operate properly
(except any accessories or the battery), contact our Customer Service
Department to report the problem. International customers should contact their
local distributor. When calling, please be prepared to provide our customer
service representative with the following information:
• Your name, shipping address, and telephone number;
• The model number of the inoperable unit;
• The serial number of the inoperable unit (located on the frame);
• The date(s) of purchase for the inoperable unit(s);
• Your billingaddress.
This information will ensure that you are the only one ordering parts under
your warranty protection. If warranty replacement parts are shipped to you, you
may be required to return the inoperable part. To facilitate this process, the
followingpolicy has beenestablished:
• Please call our Customer Service Department to receive a Return
Materials Authorization (RMA) prior to shipment.
• StairMaster Health & Fitness Products, Inc. will incur all freight (i.e.,
shipping and handling) charges for warranty parts ordered for a product
that is less than 45 days old. The parts will be shipped to you via an
overnight courier.
• The customer is responsible for freight charges on warranty parts for
products that are more than 45 days old. Customers will not be
responsible for the return shipment of the inoperable parts (see below).
• Some inoperable warranty parts must be promptly returned to our
Customer Service Department. We will pay the shipping cost for the
inoperable warranty parts. Detailed instructions are included with each
warranty replacement part shipment.
StairMaster Health & Fitness Products, Inc. neither makes, assumes, nor
authorizes any representative or other person to make or assume for us, any
other warranties whatsoever, whether expressed or implied, in connection with
the sale, service, or shipment of our products. We reserve the right to make
changes and improvements in our products without incurring any obligation to
similarly alter products previously purchased. In order to maintain your product
warranty and to ensure the safe and efficient operation of your StairMaster
Momentum systems cycle ergometer, only authorized replacement parts can be
used. This warranty is void if any parts other than those provided by StairMaster
Health & Fitness Products, Inc. are used.
* Note: Aerosol products cannot be transported via air.

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PREFACE
The StairMaster®Momentum systems cycle ergometer is a safe and effective
way to develop aerobic fitness while conditioning the major muscles of the lower
body. In order to get the best results, and to keep your machine in peak operating
condition, you should carefully read and follow the guidelines presented in this
manual.
WHAT IS IN THIS MANUAL?
This manual includes sections on safety, installation, operating instructions,
preventive maintenance, and detailed information on troubleshooting and repair
procedures. An appendix at the end of the manual provides important phone
numbers and drawings.
WHAT IS THE STAIRMASTER STRATUS CYCLE
ERGOMETER?
The Momentum systems cycle ergometers have 20 levels of intensity for each
exercise program. The Momentum uses a variable resistance system to maintain
constant power within any given intensity level. The resistance decreases as you
pedal faster and increases as you pedal slower. The variable resistance system
ensures you will do the same amount of work regardless of how fast or slow you
pedal.
WHAT IS THE BATTERY CHARGER USED FOR?
Plug in the battery charger only to recharge a weak battery. Exercising on the
Momentum cycle while the battery charger is connected will not damage the
machine, but will affect the power output (watts) statistics.

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CONTENTS
SAFETY GUIDELINES .......................................................................................1
INTRODUCTION ................................................................................................3
INSTALLATION INSTRUCTIONS.....................................................................5
BASIC OPERATING INSTRUCTIONS .............................................................6
Adjustments..........................................................................................6
Seat Height Adjustment on the Momentum 3400 CE ..........................6
Seat Adjustment on the Momentum 3800 RC......................................6
Foot Strap Adjustment on the Momentum 3400 CE.............................7
Basic Instructions For First-Time Users ................................................8
BeginExercising....................................................................................8
Rest Periods ..........................................................................................9
Cooldown .............................................................................................9
GENERAL EXERCISE GUIDELINES .................................................................10
Setting a Goal .......................................................................................10
FlexibilityTraining .................................................................................10
ExercisePrinciples ................................................................................11
HEART RATE MONITORING ............................................................................12
Heart Rate Input....................................................................................12
Locked/Non-locked Option ...................................................................12
Error Messages.....................................................................................13
TELEMETRYHEART RATE................................................................................14
Using The Transmitter Belt ...................................................................14
Maintaining The Transmitter Belt.........................................................15
CONTACT HEART RATE....................................................................................16
Contact Heart Rate ...............................................................................16
Using The Contact Heart Rate ..............................................................16
MOMENTUM SYSTEMS CONSOLE...............................................................17
DisplayWindow....................................................................................17
Numeric Keypad....................................................................................17
Entertainment Keypad ..........................................................................17

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CONTENTS
Intensity Level Keys ..............................................................................17
Stop Key................................................................................................17
Workout Statistics ................................................................................19
Exercise Program Keypad .....................................................................20
The Quick Start Program................................................................20
The Manual Program .....................................................................20
The Fat Burner Program.................................................................21
The Aerobic Training Program .......................................................21
The Speed Intervals Program ........................................................21
The Constant Heart Rate Program.................................................22
The Fitness Test Programs....................................................................23
Understanding Submaximal Exercise Testing ...............................23
Pretest Screening ..........................................................................25
The StairMaster®Submaximal Fit Test.........................................25
Turning on the StairMasterFitness Test........................................28
Console Codes ......................................................................................29
Custom Codes................................................................................29
Machine Status Codes ..................................................................31
Diagnostic Codes...........................................................................31
Configuration Codes ......................................................................33
Fitness Testing Codes....................................................................33
MAINTENANCE INSTRUCTIONS ...................................................................34
Helpful Hints .........................................................................................34
Tool List.................................................................................................34
Maintenance Records...........................................................................34
Resetting The Maintenance Timer ................................................35
Preventive Maintenance.......................................................................35
Cleaning.........................................................................................35
Weekly Inspection .........................................................................36
Monthly Inspection........................................................................36
TROUBLESHOOTING GUIDELINES ................................................................39
GeneralTroubleshooting Guidelines.....................................................39
Systematic Electrical Troubleshooting..................................................39
Systematic Mechanical Troubleshooting..............................................42
Console Diagnostic Tests......................................................................43
Diagnostic Codes...........................................................................43

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CONTENTS
Display Test ...................................................................................43
Keypad Test ...................................................................................43
Serial Port Test ..............................................................................44
Alternator Test...............................................................................44
Tach Test........................................................................................45
Error Reporting...............................................................................45
Contact Heart Rate ........................................................................46
Telemetry (Polar®)Heart Rate Test................................................47
PARTS REMOVAL AND REPLACEMENT .......................................................48
Alternator..............................................................................................48
Covers ...................................................................................................49
Console .................................................................................................50
Handlebar Assembly (3400 CE).............................................................50
Seat (3300 CE).......................................................................................51
Seat (3800 RC) ......................................................................................52
Seat Post (3400 CE)...............................................................................53
Seat Handle (3400 CE) ..........................................................................54
Seat Track (3800 RC ..............................................................................54
High Torque Drive (HTD) Belt ................................................................55
Poly-V Belt.............................................................................................55
Intermediate Poly-V Pulley Assembly ...................................................56
Pedals....................................................................................................57
Crank and Bottom Bracket Assembly ...................................................58
GROUNDING INSTRUCTIONS ........................................................................60
NOTICE OF FCC COMPLIANCE .......................................................................61
APPENDICES
Important Phone Numbers....................................................................62
Battery Recycling Centers.....................................................................63
Figures 8 - 21 ........................................................................................65
LIST OF TABLES
Table 1: Dimensions of the Momentum Cycle Ergometer ....................4
Table 2: Fitness Rating Norms(VO2max)...............................................28
Table 3: Preventive Maintenance Schedule .........................................38

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LIST OF ILLUSTRATIONS
Figure 1: Major Parts, 3400 CE .............................................................3
Figure 2: Major Parts, 3800 RC.............................................................4
Figure 3: Leg Levelers ...........................................................................5
Figure 4: Transmitter Belt......................................................................15
Figure 5: Momentum Systems Console................................................17
Figure 6: StairMaster®Fitness Protocol...............................................27
Figure 7: Grounding System..................................................................60
Figure 8: Cover Fasteners .....................................................................65
Figure 9: Cover Fastener Location, 3400 CE .........................................66
Figure 10: Cover Fastener Location, 3800 RC .......................................67
Figure 11: Right Side View, 3400 CE.....................................................68
Figure 12: Right Side View, 3800 RC ....................................................69
Figure 13: Seat Post Assembly, 3400 CE ..............................................70
Figure 14: Seat Assembly, 3800 RC ......................................................71
Figure 15: Seat Track Assembly, 3800 RC.............................................72
Figure 16: Intermediate Poly-V Assembly.............................................73
Figure 17: Crank Assembly ...................................................................74
Figure 18: Alternator/Flywheel Assembly ............................................75
Figure 19: Wire Connections ................................................................76
Figure 20: Power Control Board Plug-ins ..............................................77
Figure 21: Wiring Diagram....................................................................78
CONTENTS

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WHEN USING ELECTRICAL EQUIPMENT, ALWAYS FOLLOW THESE BASIC PRECAUTIONS:
IMPORTANT SAFETY INSTRUCTIONS
This symbol appearing throughout this manual
means Attention! Be Alert! Your safety is involved.
The following definitions apply to the words “Danger” and “Warning”
found throughout this manual:
DANGER - Used to call attention to IMMEDIATE hazards which, if not
avoided, will result in immediate, serious personal injury or loss of life.
WARNING - Used to call attention to POTENTIAL hazards that could
result in personal injury or loss of life.
READALLINSTRUCTIONSBEFOREUSINGTHEMACHINE.
To reduce the risk of electrical shock, always
unplug the external power supply from the
electrical outlet before cleaning, maintaining, or
repairing.
To reduce the risk of burns, electric shock, or
injury to persons:
1. The external power supply should always be unplugged from the electrical
outlet before removing or installing parts. Never make adjustments or
repairs while an exercise program is in progress.
2. Close supervision is necessary whenever the machine is used by or near
children, invalids, or disabled persons. Unplug from outlet when not in use.
3. Keep your hands away from all moving parts and keep your feet on the
pedals while exercising. Do not operate the machine with the side covers
removed, or outdoors.
!
SAFETY GUIDELINES
DANGER
!
WARNING
!

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4. Use this machine only for its intended use as described in this Manual. Do
not use parts, attachments, or accessories other than those provided by
StairMaster®Health & Fitness Products.
5. Do not use the external power supply if it has a damaged cord or plug, if it
is not working properly, if it has been dropped or damaged, or dropped
into water. Contact our Customer Service Department to arrange for the
return of damaged parts.
6. Connect the external power supply to a properly grounded AC wall outlet;
refer to the “Grounding Instructions” section. Keep all cords away from
heated surfaces.
7. To disconnect the external power supply, remove the plug from the AC
walloutlet.
8. Never drop or insert any object into any opening on the machine.
9. Do not operate where aerosol (spray) products are being used.
10. Always wear insulated gloves when handling batteries.
11. Do not crush, incinerate, or dismantle the battery. The electrolyte
contains sulfuric acid which can cause serious damage to eyes
and skin. Should this occur, flush profusely with water and seek
medicalattention.
12. Do not use the machine outdoors.
The safety level given by the design of this equipment can only be maintained
when the equipment is regularly examined for damage and wear. Inoperable
components shall be replaced immediately or the equipment shall be put out of
use until it is repaired. Failure to follow all guidelines may compromise the
effectiveness of the exercise experience, expose yourself (and possibly others) to
injury, and reduce the longevity of the machine. Follow all training instructions
listed in the manual and/or on the machine. Physical injury may result from
incorrect or excessive training.
SAVE THESE INSTRUCTIONS
SAFETY GUIDELINES

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Before leaving the StairMaster manufacturing facility in Tulsa, Oklahoma, your
StairMaster®Momentum cycle ergometer was thoroughly inspected and tested
to ensure proper operation. The major parts of the StairMaster Momentum 3400
CE and 3800 RC are shown in Figures 1 and 2.
Figure 1: Major Parts, 3400 CE
INTRODUCTION
Seat adjustment knob Seat
Console
Pedal footstrap
Legleveler
Transport wheel

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INTRODUCTION
Figure 2: Major Parts, 3800 RC
Throughout this manual, all references to the left or right side and to the front or
back are made as if you were on the machine, ready to exercise. For example, the
drive chain is located on the right side of the machine. The dimensions of the
machine are listed in Table 1.
Table 1. Dimensions of the Momentum Cycle Ergometer
3400 CE 3800 RC
Length 60.5 inches (154 cm) 59 inches (150 cm)
Width 23.5 inches(60 cm) 23.5 inches(60 cm)
Height 57.75 inches(147 cm) 47.25 inches(120 cm)
Weight 125 pounds (57 kg) 157 pounds (71 kg)

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Assemble your machine before use. Machines shipped outside the United States
need to be uncrated before they can be assembled; refer to the “Uncrating
Instructions”included with your machine for the details.
1. Remove all shipping material and the battery charger from the
machine. The battery charger is only used to recharge a low
battery.
2. Make sure the machine is level before you use it for the first time.
Adjust the leg levelers as necessary to level the machine (see below).
Figure 3: Leg levelers
3. Pedal the cycle to turn on the console. Watch the console, it should
display the machine type and then show “SELECT WORKOUT.”
If the console does not, connect the battery charger to the machine and
then plug it into an electrical outlet. If the console powers up, your
battery is low and needs to be charged. Leave the battery charger
connected to the machine for 24 to 48 hours to charge the battery. It is
okay to use the machine with the battery charger connected.
4. If the console still does not power up correctly, contact our Customer
Service Department. Refer to the Appendix for the appropriate phone
number.
INSTALLATION INSTRUCTIONS

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ADJUSTMENTS
You should check two adjustments before using your StairMaster®Momentum
systems cycle ergometer: the seat and the pedal foot strap length.
Seat Height Adjustment on the Momentum 3400 CE
Sit on the seat. Put both feet onto the pedals and into the foot straps. Pedal
slowly and then stop when one leg is extended and your foot is as close to the
floor as possible. The knee of the extended leg should be slightly bent when the
sole of your foot is parallel to the floor. If you need to adjust the seat height, get
off the bike and stand to one side. The seat adjustment knob is located on the
frame tube just below the front part of the seat. Hold onto the seat with one
hand and pull out on the seat adjustment knob with your other hand. You may
need to lift up on the seat to disengage the seat pin. Lower or raise the seat as
necessary.
Seat Adjustment on the Momentum 3800 RC
Sit on the seat. Put both feet onto the pedals and into the foot straps. Pedal
slowly and then stop when one leg is extended. The knee of the extended leg
should be slightly bent. The seat adjustment lever is in front of the seat base.
Remain seated and keep your feet on the pedals. Pull up on the lever and slide
forward or backward as necessary. Release the lever and make sure the seat is
locked in place by trying to move the seat forward and backward.
BASIC OPERATING INSTRUCTIONS
!WARNING
TO ELIMINATE THE RISK OF INJURY, DO NOT ADJUST THE SEAT HEIGHT
WHILE SITTING ON THE MOMENTUM 3400 CE CYCLE ERGOMETER. MAKE
SURE THAT THE SEAT ADJUSTMENT PIN COMPLETELY ENGAGES THE HOLE
IN THE SEAT POST BEFORE REMOUNTING THE BIKE.

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Foot strap Adjustment
To ensure your feet are properly secured to the pedals, you need to check the
position of the foot straps. Position your foot so that the ball of your foot is over
the pedal spindle. The pedal foot straps should be tight enough to secure your
feet to the pedals but not so tight so as to cut off the circulation. If you need to
adjust the foot strap length, get off the bike and stand to one side. There are two
adjusting holes on the inside foot strap mount and four holes on the outside foot
strap mount. Most shoes can be accommodated by adjusting the outside
mounting holes. To make the necessary adjustments, grasp the pedal with one
hand and the outside end of the foot strap with your other hand. Carefully pull
the outside end of the foot strap off the tab on the pedal. Insert the proper hole
of the foot strap onto the pedal tab. If you need to make additional adjustments,
repeat the process with the inside mounting holes of the foot strap.
BASIC OPERATING INSTRUCTIONS

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BASIC OPERATING INSTRUCTIONS
BASIC INSTRUCTIONS FOR FIRST-TIME USERS
1. Warm up with light calisthenics and easy stretching exercises for at
least five minutes before beginning your exercise program.
2. Position yourself comfortably on the bike and begin pedaling.
3. Select the MANUAL exercise program so you can control the pace of
your first workout and get used to the exercise motion. Press
[MANUAL] and then press [ENTER]. The console will return to
the start screen if you do not press [ENTER] within 60 seconds.
4. The console will prompt you to enter your body weight. Enter your
weight in pounds (or kilograms if the console is set up for metric
units). Correct entry errors by pressing [CLEAR] before you press
[ENTER].
5. The console will prompt you to enter your intensity level. Enter your
desired intensity level. Correct entry errors by pressing [CLEAR] before
you press [ENTER].
6. The console will prompt you to enter the workout time in one minute
increments between 5 and 99 minutes. Press [1], [0], [ENTER] to
exercise for ten minutes. If you do not start exercising within 60
seconds, the console will return to the start screen.
Begin Exercising
7. As you become comfortable with exercise motion, press [LEVEL: ∧] and
[LEVEL: ∨] to adjust your cycling speed.
!WARNING
IF AT ANY TIME DURING YOUR WORKOUT YOU FEEL CHEST PAIN,
EXPERIENCE SEVERE MUSCULAR DISCOMFORT, FEEL FAINT, OR ARE SHORT OF
BREATH, STOP EXERCISING IMMEDIATELY. IF THE CONDITION PERSISTS, YOU
SHOULD CONSULT YOUR MEDICAL DOCTOR IMMEDIATELY.

Page 9
8. Select an intensity level that allows you to stay at a comfortable pace.
Harder is not always better. Exercise at a level that is consistent with
your fitness level.
Rest Periods
9. You can stop and rest as many times as necessary for up to one
minute for each rest period during all programs. To stop, either press
[STOP] or step off the machine. Follow the onscreen prompt to continue
your work out after a rest period.
Cool Down
10. When you are finished with your workout, the machine will slow
down and the messages “GOAL ATTAINED", and then "COOL DOWN"
will be displayed. You can cool down on the machine by continuing to
pedal at a low intensity. The console timer will continue to count up
from the selected time to the console's set maximum time, and the
intensity level will default to level 1. For example, if the console's time
limit was set for 60 minutes and you entered a 45 minute workout
session, the cool down period would last for 15 minutes, or until you
stepped off the machine. If no time limit is set on the console, the timer
will count up to 99, return to 0, and start counting up again. Press
[STOP] to end the cool down, or step off the machine. If the machine is
idle for one minute during the cool down, it will turn off.
11. You can also cool down by getting off the machine walking or
stretching for at least five minutes.
BASIC OPERATING INSTRUCTIONS

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SETTING A GOAL
The first step to a successful exercise program is to set realistic goals and
objectives. Are you wanting an exercise program that is geared to build muscle,
maintain muscle tone, or lose weight? In order to ensure that you fully receive all
the benefits of a sound exercise program, you need to first identify the existence
(if any) of risk factors that may influence the design of your exercise program.
Based upon a comprehensive analysis of your personal exercise needs and
interests, you should then develop (or have developed for you by a competent or
trained professional) an individualized program of exercise that is enjoyable,
easy, and yet challenging. Your greatest health benefit will come from a lifestyle
change that encourages a lifetime of physical activity.
One way to guarantee success in reaching your goal is to eat correctly. A
well-rounded diet provides the proteins, carbohydrates, fats, vitamins, minerals,
and water necessary for good health. If you are unsure of your dietary needs,
seek the advise of your physician, an exercise professional, or visit your local
bookstore for more information on nutrition.
FLEXIBILITY TRAINING*
Achieving and maintaining an adequate range of motion should always be
objectives of a comprehensive exercise program. The warm-up phase of your
exercise session should include some type of light warm-up activity to increase
both your heart rate and your body temperature, which is then followed by
flexibility exercises that are specifically designed to stretch the musculature
around your body’s major skeletal joints. Attempting to stretch a cold muscle can
be dangerous to the soft tissues surrounding the muscle. No matter how
controlled the movement, forcing a muscle through a full range of motion (and
beyond) without appropriately warming up is both unsafe and counterproductive.
A general exercise program for achieving and maintaining flexibility should
adhere to the following guidelines:
•Frequency - daily
•Intensity - to a position of mild discomfort
•Duration - 10-30 seconds for each stretch
GENERAL EXERCISE GUIDELINES

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•Repetitions - 2-6 for each stretch
•Type - static, with a major emphasis on the low back and
hamstrings area because of the high prevalence
of low-back pain syndrome in our society.
EXERCISE PRINCIPLES*
The American College of Sports Medicine has developed a position paper
concerning exercise programs for healthy adults and the need for guidelines. The
following recommendations concern the quantity and quality of (exercise)
training for developing and maintaining cardiorespiratory fitness in a healthy
adult:
•Frequency -3 to 5 days per week
•Intensity -50% - 85% of maximum oxygen
uptake (VO2 max)
•Duration -20 to 60 minutes of continuous
aerobic activity
•Mode of Activity -Any activity that uses the large
muscle groups, that can be
maintained continuously, and is
rhythmical and aerobic in nature.
•Rate of Progression -Initial Conditioning - 4 to 6 weeks; low-
end intensity (40% - 60% VO2 max); low-end
duration (15 to 20 minutes).
-Improvement Stage - 6 weeks to 6 months;
moderate intensity; moderate duration.
-Maintenance Stage - 6 months plus;
moderate to high intensity; moderate to
high duration.
*Note: Some of the material contained in this section is adapted from The
StairMaster
®
Fitness Handbook 2nd Ed. , James A Peterson, and Cedric X. Bryant
(editors),Sagamore Publishing,1995.
GENERAL EXERCISE GUIDELINES

Page 12
HEART RATE INPUT
Contact heart rate and telemetry (e.g., Polar®) heart rate signal detection is
available. The default heart rate input option is "BOTH LOCKED." If a telemetry
signal is detected first, contact heart rate signals are inhibited from being
detected throughout the rest of the workout session and vice-versa. There is also
a short “lock out”period at the beginning of each workout session during which
the console first detects a signal and then validates the signal type. The duration
of this shorter, initial “lock out”period differs between telemetry and contact
heart rate.
•Telemetry heart rate - after the initial belt signal is detected,
the console will enter a validation phase in which four good
heart beat signals within four seconds are required before
locking on telemetry heart rate signals for the duration of the
workout session. During the validation phase the console will
not recognize contact heart rate signals.
•Contact heart rate - after the initial contact sensor signal is
detected, the console will enter a validation phase requiring a
good heart beat signal within 10 to 15 seconds, or until the
system acquires a valid signal. During the validation phase, the
console will not recognize telemetry heart rate signals. The
console will display a beating double heart icon that has the
inner heart colored in while searching for a valid signal.
Locked/Non-locked Option
When the “not locked”option is selected the heart rate source signal is not fixed
during the exercise (if the signal is lost, either input will be valid). If the “locked”
option is selected, then the heart rate source signal is locked on the first
detected signal during the workout. To set a heart rate signal input, or to turn off
the heart rate option all together, perform the following steps:
1. On the console keypad, press [LEVEL: ∧ ], [3], [2]. At this point
the screen will display “HR INPUTS.”Press [ENTER] to select
this option.
HEART RATE MONITORING