MILESTONE 4200/4400HR TREADMILL
OWNER’S MANUAL
Keys Fitness Treadmills
Manufactured in the USA by:
KEYS Fitness Products, LP
P.O. Box 551239
Dallas, Texas 75239
PART# 15-0113
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Specification Sheet
MS4200
2.0hp
MS4400HR
2.5hp
♦ Horsepower (Continuous)
♦ Display Type
♦ Electronics
(Green, with pace)
5 Window LED
Push button
4
5 Window LED
Push Button
4
♦ Pre-Set Programs
♦ Custom Programs
♦ User Programs
♦ Heart Rate Interactive
♦ Power Incline
8
8
2
2
No
Yes
12%
12%
♦ Remote Toggle Switches
♦ Speed/Incline Speed Bar
♦ Roller Diameter
♦ Cushioned Deck
♦ Speed Range
Yes
Yes
Yes
Yes
2.5”
2.5”
Yes
Yes
0-10mph
20” x 56”
No
0-10mph
20” x 56”
No
♦ Belt Size
♦ Front Hand Rails
♦ Side Hand Rails
♦ Foot Print
Yes
Yes
32” x 71”
32” x 26”
10 Years
2 Years
1 Year
Lifetime
32” x 71”
32” x 26”
10 Years
2 Years
1 Year
Lifetime
♦ Foot Print Folded
♦ Warranty Motor
♦ Warranty Parts
♦ Warranty Labor
♦ Warranty Frame
PAGE 3
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Important Safety Information
1) WARNING! Before using this treadmill or starting any exercise program, consult your physician. This is
especially important for persons over the age of 35 and/or persons with pre-existing health problems. The
manufacturer or distributor assumes no responsibility for personal injury or property damage sustained by or
through the use of this product.
2) WARNING! To reduce the risk of electrical shock, burns, fire, or other possible injuries to the user, it
is important to review this manual and the following precautions before operation.
SAFETY PRECAUTIONS AND TIPS
♦ It is the owner’s responsibility to ensure that all users of this treadmill have read the Owner’s Manual and
are familiar with warnings and safety precautions.
♦ This treadmill has a user maximum capacity of 300 pounds.
♦ The treadmill should only be used on a level surface and is intended for indoor use only. The treadmill
should not be placed in a garage, patio, or near water and should never be used while you are wet. KEYS
recommends a treadmill mat be placed under the treadmill to protect floor or carpet and for easier
cleaning.
♦ Follow safety information in regards to plugging in your treadmill. Keep the power cord away from the
incline wheels and do not run the power cord underneath your treadmill. Do not operate the treadmill with
a damaged or frayed power cord.
♦ Wear comfortable, good-quality walking or running shoes and appropriate clothing. Do not use the
treadmill with bare feet, sandals, socks or stockings.
♦ Always straddle the belt and allow it to start moving before stepping onto the belt.
♦ Hold on to handrails when adjusting speed, incline, or other controls.
♦ Always examine your treadmill before using to ensure all parts are in working order.
♦ Allow the belt to fully stop before dismounting.
♦ Pets should never be allowed near or on the treadmill.
♦ Do not leave children unsupervised near or on the treadmill.
♦ Never operate the treadmill where oxygen is being administered, or where aerosol products are being
used.
♦ Never insert any object or body parts into any opening.
♦ For safety and to prevent damage to your treadmill, no more than one person should use the treadmill at a
time.
♦ Always unplug the treadmill before cleaning and/or servicing. Service to your treadmill should only be
performed by an authorized service representative, unless authorized and/or instructed by the
manufacturer. Failure to follow these instructions will void the treadmill warranty.
♦ Never leave the treadmill unattended while it is running.
PAGE 4
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Before You Start
Thank you for purchasing a KEYS treadmill! The MS4200 and MS4400HR were designed to meet your
needs for cardiovascular exercise.
Before you start, please read the Owner’s Manual and become familiar with the operation of your new
treadmill.
♦Remember to take the time to perform the stretching exercises provided on Page 6 to avoid injury.
♦Do not stand on the walking belt while pressing the Power button or Start/Stop button.
♦Always adjust the speed of the treadmill in small increments as this treadmill is capable of high speeds.
♦If you are taking medication, consult your physician to see if the medication will affect your exercise
heart rate.
♦If you have heart problems, you are not active, and/or are over the age of 35 years, do not use the pre-set
treadmill programs or start an exercise program without first contacting and receiving approval from your
physician.
♦To avoid the risk of electrical shock, always keep the console dry. Do not spill liquids on the console.
KEYS recommends a sealed water bottle for beverages consumed while using the treadmill.
♦ Please review the following picture below to familiarize yourself with the listed parts. This
manual covers several treadmills, so the one pictured below may not be identical to your particular
model.
CONSOLE
ELECTRONIC DISPLAY
WATER BOTTLE HOLDER
(WATER BOTTLE NOT INCLUDED)
SIDE HAND RAILS
MOTOR COVER
SAFETY LATCH
WALKING BELT
UPRIGHTS
CIRCUIT BREAKER
REAR ROLLER
ADJUSTMENT BOLTS
WHEEL
FOOT RAILS
PAGE 5
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Warm Up Exercises
EXERCISE GUIDELINES
WARNING! Before beginning this or any exercise program, you should consult your physician. This is espe-
cially important for individuals over the age of 35 or individuals with pre-existing health problems.
Warming up prepares the body for the exercise by increasing circulation, supplying more oxygen to the mus-
cles and raising body temperature. Begin each workout with 5 to 10 minutes of stretching and light exercise
to warm up. The photos on this page show several forms of basic stretching you may perform before your
workouts. In order to achieve an adequate warm-up, perform each stretch three times.
TOE TOUCH STRETCH
Stand bending your knees slightly and slowly bend for-
ward from your hips. Allow your back and shoulders to
relax as you reach down toward your toes as far as pos-
sible. Hold for 15 counts, then relax. This will stretch
your hamstrings, back of knees , and back.
HAMSTRING STRETCH
Sit with one leg extended. Bring the sole of the opposite
foot toward you and rest it against the inner thigh of
your extended leg. Reach toward your toes as far as
possible. Hold for 15 counts, then relax. This will
stretch your hamstrings, lower back, and groin.
CALF/ACHILLES STRETCH
With one leg in front of the other, reach forward and
place your hands against a wall. Keep your back leg
straight and your back foot flat on the floor. Bend your
front leg, lean forward and move your hips toward the
wall. Hold for 15 counts, then relax. To cause further
stretching of the Achilles tendons, bend your back leg as
well. This will stretch your calves, Achilles tendons,
and ankles.
QUADRICEPS STRETCH
With one hand against a wall for balance, reach back
and grasp one foot with your other hand. Bring your
heel as close to your buttocks as possible. Hold for 15
counts, then relax. This will stretch your quadriceps
and hip muscles.
INNER THIGH STRETCH
Sit with the soles of your feet together and your knees
outward. Pull your feet toward your groin area as far as
possible. Hold for 15 counts, then relax. This will
stretch your quadriceps and hip muscles.
PAGE 6
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Assembly, Moving Instructions
The MS4200 and MS4400HR are shipped in two pieces, please see assembly instructions below. After
opening the box, remove any packing materials from the treadmill. Do not throw away any packing
materials until the unit is working properly. Place the base on a clean, level surface. Make sure the
electrical cord will easily reach an electrical outlet.
Assembly
See Figure 1
To attach End cap:
1. Place plastic end cap over exposed rear roller area.
2. Align holes in plastic end cap with pre-drilled holes in frame.
3. Loosely tighten each screw until all four screws are lined up.
4. Tighten all four screws snugly.
Moving
See Figure 2
CAUTION! TO AVOID THE RISK OF INJURY, NEVER ATTEMPT TO MOVE THE TREADMILL WHILE IT IS IN THE
UNFOLDED OPERATING POSITON. TO REDUCE THE POSSIBILITY OF INJURY WHILE LIFTING, BEND YOUR
LEGS AND KEEP YOUR BACK STRAIGHT. AS YOU RAISE THE TREADMILL, LIFT USING YOUR LEGS, NOT
YOUR BACK. IN ORDER TO RAISE OR LOWER THE TREADMILL SAFELY, YOU MUST BE ABLE TO LIFT 45
POUNDS (20KG). IT IS SUGGESTED YOU ALWAYS USE THE AID OF A SECOND PERSON WHEN MOVING THE
TREADMILL.
With the treadmill in the folded locked position (safety latch is engaged), grasp the handrails and place one foot on the base as
shown in the photo below. Next, with a firm grasp on handrails, place one foot on the center of the base crossbar and carefully
tilt the treadmill back until it rolls freely on the wheels. Using extreme caution, move the treadmill to the desired location. To
set the treadmill down, place one foot on the center of the base crossbar and carefully lower treadmill onto base in resting
position. Do not attempt to move the treadmill over an uneven or rough surface.
Figure 2
Figure 1
PAGE 7
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Power Requirements
NG!
IMPROPER CONNECTION OF THE EQUIPMENT GROUNDING CONNECTOR CAN RESULT IN A
RISK OF AN ELECTRIC SHOCK. CHECK WITH A QUALIFIED ELECTRICIAN OR SERVICE MAN
IF YOU ARE IN DOUBT AS TO WHETHER THE PRODUCT IS PROPERLY GROUNDED. DO NOT
MODIFY THE PLUG PROVIDED WITH THE PRODUCT, IF IT WILL NOT FIT THE OUTLET, HAVE
A PROPER OUTLET INSTALLED BY A QUALIFIED ELECTRICIAN.
This treadmill can be seriously damaged by sudden voltage changes in your home’s electrical power.
Voltage spikes, surges, and noise interference can result from weather conditions or from other appliances
being turned on or off. To reduce the possibility of treadmill damage, always use a surge protector (not
included) with your treadmill.
Surge protectors can be purchased at most hardware stores. The manufacturer recommends a single outlet
surge protector with a UL 1449 rating as a Transient Voltage Surge Suppressor (TVSS) with a UL
suppressed voltage rating of 400V or less and an electrical rating of 120VAC, 15 amps.
This treadmill must be grounded to reduce the risk of electrical shock. Grounding provides a path of least
resistance for electric current, should the treadmill malfunction. This treadmill comes with an electrical
cord having an equipment-grounding conductor and a grounding plug. Always plug the power cord into a
surge protector, and plug the surge protector into an appropriate outlet that is properly installed and
grounded in accordance with all local codes and ordinances.
This product is for use on a nominal 120-volt circuit and has a grounding plug that looks like the plug
illustrated in the drawing below.
PAGE 8
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Console Functions and Descriptions
START/STOP - This button
starts the treadmill belt
MS4200
moving. There is a 4 second
countdown built in as a safety
feature to let you know the
treadmill belt is about to start
moving.
Use the START/STOP button
also to stop your treadmill
after your workout. The belt
will gradually come to a stop
after pressing the button.
PROGRAM BUTTONS - These buttons are used to
access each of the three programs: Fat Burn, Cardio,
and Warm Up. Each program has one preset program,
and two additional custom programs in the P1 and P2
mode. See the “Program and Operating Instructions” on
page 12.
POWER - Press to on. Allow
6-8 seconds while the
electronics perform a self
check prior to pressing other
buttons.
ENTER - Use
the Enter button
while setting
program time,
speed, and
incline options.
See page 12 for
complete
PAUSE - Press to
temporarily pause
your workout
while in use. The
treadmill is
designed with an
automatic power
off feature after 5
minutes in the
instructions.
pause mode.
INCLINE - Use to either
increase (UP arrow) or
decrease (DOWN arrow)
the incline. These buttons
are also used while
SPEED - Use to either
increase (UP arrow) or
decrease (DOWN arrow)
the speed. These buttons
are also used while
ONE TOUCH SPEED BAR -
Use to either increase or
ONE TOUCH INCLINE
BAR - Use to either increase or
decrease the incline. Each
number indicates percent of
grade. Pressing one of the
buttons will gradually increase
or decrease the incline to the
new setting.
decrease the speed. Each
number indicates MPH.
Pressing one of the buttons will
gradually increase or decrease
the speed to the new setting.
programming INCLINE.
programming SPEED and
TIME.
PAGE 9
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Console Functions and Descriptions
START/STOP - This button
starts the treadmill belt
MS4400HR
moving. There is a 4 second
countdown built in as a safety
feature to let you know the
treadmill belt is about to start
moving.
Use the START/STOP button
also to stop your treadmill
after your workout. The belt
will gradually come to a stop
after pressing the button.
PROGRAM BUTTONS - These buttons are used to
access each of the three programs: Fat Burn, Cardio,
and Warm Up. Each program has one preset program,
and two additional custom programs in the P1 and P2
mode. See the “Program and Operating Instructions” on
page 12.
POWER - Press to on. Allow
6-8 seconds while the
electronics perform a self
check prior to pressing other
buttons.
ENTER - Use
the Enter button
while setting
program time,
speed, and
incline options.
See page 12 for
complete
PAUSE - Press to
temporarily pause
your workout
while in use. The
treadmill is
designed with an
automatic power
off feature after 5
minutes in the
instructions.
pause mode.
INCLINE - Use to either
increase (UP arrow) or
decrease (DOWN arrow)
the incline. These buttons
are also used while
SPEED - Use to either
increase (UP arrow) or
decrease (DOWN arrow)
the speed. These buttons
are also used while
ONE TOUCH SPEED BAR -
Use to either increase or
ONE TOUCH INCLINE
BAR - Use to either increase or
decrease the incline. Each
number indicates percent of
grade. Pressing one of the
buttons will gradually increase
or decrease the incline to the
new setting.
decrease the speed. Each
number indicates MPH.
Pressing one of the buttons will
gradually increase or decrease
the speed to the new setting.
programming INCLINE.
programming SPEED and
TIME.
PAGE 10
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Console Functions and Descriptions
There are five display windows on the control panel to provide feedback information.
TIME WINDOW
♦ TIME: Indicates elapsed time after pressing start in minutes and seconds (0-99 minutes, 0-59 seconds)
♦ INTERVAL TIME: Indicates countdown in seconds to the next interval starting at 5 seconds and
counting to 0 seconds.
♦
PACE: Indicates amount of time required to complete 1 mile at current speed.
♦ SPEED WINDOW
♦ SPEED: Indicates MPH (miles per hour) or KMH (kilometer per hour) in .1 increments
♦ DISTANCE / CALORIES WINDOW
♦ DISTANCE: Indicates Miles or Kilometers traveled in .01 increments up to 9.99 and .1 increments
starting at 10.0
♦ CALORIES: Indicates estimated calories used based on 150 lb. person at the indicated speed, incline,
and time
♦ INCLINE WINDOW
♦ INCLINE: Indicates incline in percent of grade 0-12% in 1 increments
♦ PULSE ( MS4400HR Model Only): Indicates current heart rate
♦ HEART “♥” (MS4400HR Model only): Indicates control panel is receiving a signal from heart rate
transmitter. Heart will blink on and off if receiving signal from Heart Rate Transmitter chest strap.
♦ CENTER BRICKYARD WINDOW
♦ Displays quarter mile track in Manual mode. Indicates position on track by a blink. In program mode,
shows the change in speed profile across the interval range (1-10) and shows position with a blinking
action.
The LAP counter will appear in manual mode in the center of the window.
♦ SPEED & INCLINE “ONE-TOUCH” BUTTONS
♦
Easy One-Touch buttons for Speed and Incline have been added to the console. To increase or decrease the speed, simply
choose the desired setting (each number 2 through 8 represents Miles per Hour). To increase or decrease the amount of
incline, simply choose the desired setting (each number 2 through 8 represents percent grade).
PAGE 11
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Program and Operating Instructions
QUICK START / MANUAL MODE
♦ Plug into a standard wall outlet (110-Volt AC, 15-amp circuit).
♦ Insert the Safety Key into the treadmill console.
♦ Stand on the treadmill and straddle belt.
♦ Press POWER button. There will be an eight (8) second delay after pressing the POWER button before
data can be entered. The TIME window will flash.
♦ Press START/STOP button. Belt will begin to move after 4 seconds. Step on belt slowly after the belt
starts moving. Speed or incline may be adjusted by using the appropriate + (increase) or – (decrease)
buttons.
♦ To end your workout, press START/STOP button. Belt will gradually slow to zero.
♦ To pause your workout, press PAUSE.
♦ To re-start after pausing: Press the PAUSE button. WARNING: The treadmill belt will resume at the
speed the treadmill was moving before pausing.
♦ Countdown Time, Preset Speed and/or Incline: Time, Speed, and Incline may be preset prior to
getting started. After pressing the POWER button, the WORKOUT time window will blink. Use the
SPEED/TIME + or – arrows to select your workout time, then press the ENTER PROGRAM button.
The SPEED window will now be flashing. Using the same + or – arrows, select the speed for your
workout, then press ENTER PROGRAM. Now the INCLINE window will be flashing. Use the
INCLINE + or – arrows to set your workout incline, then press ENTER PROGRAM. To start, press the
START/STOP button.
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Program and Operating Instructions
PROGRAM MODE
♦ Plug into a standard wall outlet (110-Volt AC, 15-amp circuit). Insert the Safety Key into the treadmill
console.
♦ Stand on the treadmill and straddle belt.
♦ Press POWER button. There will be an eight (8) second delay after pressing the POWER button before
data can be entered. The TIME window will flash.
♦ There are four (4) pre-set programs on the MS4200 and MS4400HR. Programs include Fat Burn,
Cardio, Warm Up, and Cross Training programs. The MS4400HR also includes a Heart Rate Interactive
program (see the program profiles later in this manual). Select the program by pressing the appropriate
button.
♦ Press START/STOP button. Belt will begin to move after 4 seconds. Step on belt slowly after the belt
starts moving.
♦ Each of the pre-set programs can also be customized. Follow the instructions below.
♦ Customizing programs in P1 and P2 Mode: Each pre-set program can be customized in the P1 or P2
mode. After making the program selection, the CALORIE/DISTANCE window will read “OP.” “OP”
refers to “original program” and is preset. The program name you select will display in the diode light
beside the program name. Press the same program button once more, and the CALORIE/DISTANCE
window will read P1. The “P1” mode is now accessed. You can now program the Time, Speed, and
Incline in P1 mode, which will save your entered information for future use. The WORKOUT time
window will blink. Use the SPEED/TIME + or – arrows to select your workout time, then press the
ENTER PROGRAM button. The SPEED window will now be flashing. Using the same + or – arrows,
select the speed for your workout, then press ENTER PROGRAM. Now the INCLINE window will be
flashing. Use the INCLINE + or – arrows to set your workout incline, then press ENTER PROGRAM.
To start, press the START/STOP button. To access P2 mode, press the selected program button three
times (once for OP, twice for P1, three times for P2). Follow the above procedure to customize.
♦ TO CHANGE A PREVIOUSLY PROGRAMMED P1, P2, or user program: Once you have
programmed the P1 or P2 modes, you will need to use the PAUSE button to change the program you
previously entered. For instance, if P1 in Fat Burn has been programmed, to change to a new setting,
press the Fat Burn button twice to access P1. Then press the PAUSE button to get the WORKOUT time
window to flash. Follow the directions above to continue to change the program.
PAGE 13
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Program and Operating Instructions
Heart Rate Control Instructions (MS4400HR)
HEART RATE PROGRAM MODE
The Heart Rate program is designed to keep your heart rate a desired level of “beats per minute” by
automatically adjusting the incline. For example, if you have programmed in a desired heart rate of 105
beats per minute and your heart rate is only 95 beats per minute (you must be wearing Heart Rate
Transmitter), the incline will automatically increase to intensify the work load, and increase you heart rate
to the 105 beats per minute you programmed.
If your heart rate is above your programmed amount of beats per minute the incline will automatically
decrease to lower your heart rate. You may at any time during the Heart Rate Program adjust/override the
speed and or incline by simply pressing the correct corresponding buttons. You may change your “Target
Heart Rate” at any time during the program by pressing the TARGET + or TARGET – buttons.
♦ Plug into a standard wall outlet (110-Volt AC, 15-amp circuit). Insert the Safety Key into the treadmill
console
♦ Place the Heart Rate transmitter strap across chest against the skin. Stand on the treadmill and straddle
belt.
♦ Press POWER button. There will be an eight (8) second delay after pressing the POWER button before
data can be entered. The WORKOUT time window will flash. The “Heart” shape on the treadmill will
be flashing if the Heart Rate Transmitter is transmitting. Adjust the strap on the chest until the console
is picking up a signal.
♦ For Quick Start, press START/STOP button. Belt will begin to move after 4 seconds. Step on belt
slowly after the belt starts moving. Speed or incline may be adjusted by using the appropriate +
(increase) or – (decrease) buttons. Heart rate will read out in the Incline window.
♦ To select the Heart Rate Control program, press the “Heart Rate Control” button.
♦ The incline window will flash “125”, which is the default program target heart rate.
♦ Adjust Target Heart Rate to desired level with the TARGET + or – buttons.
♦ Press START/STOP button, or continue instructions below to program Time and Speed.
♦ You can now program the Time and Speed. The WORKOUT time window will blink. Use the SPEED/
TIME + or – arrows to select your workout time, then press the ENTER PROGRAM button. The
SPEED window will now be flashing. Using the same + or – arrows, select the maximum speed for
your workout, then press ENTER PROGRAM. To start, press the START/STOP button.
PAGE 14
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Program Profiles
SPEED
SPEED
12
11
10
12
11
10
9
8
7
6
5
4
3
INCLINE
INCLINE
9
8
7
6
5
4
3
2
1
2
1
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
The Cardio Program is designed to
vary the treadmill Speed, while
maintaining a constant Elevation.
The Fat Burn Program is designed
to vary the treadmill elevation, while
maintaining a constant walking belt
speed.
SPEED
12
11
10
9
SPEED
12
11
10
9
INCLINE
INCLINE
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
The Warm Up Program is designed to
gradually increase the treadmill Speed and
Elevation in the first segment (warm up)
and gradually decrease the treadmill Speed
and Elevation in the last segment (cool
down). This is also known as a Plateau
program.
The Cross Training Program is designed to
control the walking belt speed and elevation
inversely in alternating segments.
PAGE 15
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Belt Adjustment and Tension
WARNING! Do not overtighten rollers! This will cause premature
roller bearing failure!
Belt adjustment and tension performs two functions: adjustment for
tension and centering. Your new treadmill comes pre-adjusted from
the factory for tension and centering. Please follow the procedures
below if the belt shifts to the left or right or while walking:
WALKING BELT IS SHIFTING TO THE LEFT (Diagram 1)
First, turn treadmill on to run at 1 mph. Using the hex key provided,
turn the left rear roller adjustment bolt ¼ turn in the clockwise
direction. Next, run the treadmill at 2.5 mph. You should see the
belt start to correct itself, moving back towards the center. Repeat the
above procedure until the walking belt is centered. It may be necessary
to set walking belt tension once you have completed this procedure if
the belt feels like it is slipping while walking. Refer below to the
“Walking Belt Slipping” instructions.
WALKING BELT IS SHIFTING TO THE RIGHT (Diagram 2)
First, turn the treadmill on to run at 1 mph. Using the hex key
provided, turn the right rear roller adjustment bolt ¼ turn in the
clockwise direction. Next, run the treadmill at 2.5 mph. You should
see the belt start to correct itself, moving back towards the center.
Repeat the above procedure until the walking belt is centered. It may
be necessary to set walking belt tension once you have completed this
procedure if the belt feels like it is slipping while walking. Refer
below to the “Walking Belt Slipping” instructions.
WALKING BELT IS SLIPPING DURING USE (Diagram 3)
First, unplug the power cord from the surge protector. Using the hex
key provided, turn both left and right rear roller adjustment bolts the
same distance, usually a ¼ turn in the clockwise direction. Plug the
power cord back into the surge protector and run the treadmill at 2.5
mph. You should now walk on the belt to determine if the belt is still
slipping. Repeat the above procedure until the walking belt is not
slipping. The tension should be just tight enough not to slip.
♦ Turning the hex key counter clockwise brings the rear rollers and
belt towards you. Turning the hex key clockwise pushes the rear
roller and belt away form you.
PAGE 16
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Maintenance Instructions
WARNING! Before performing any maintenance to your treadmill, always unplug the power cord from the
surge protector.
CLEANING
Routine cleaning of your Keys Fitness treadmill will extend the life of your treadmill. WARNING! To
prevent electrical shock, be sure the power to the treadmill is OFF and the unit unplugged from the wall
electrical outlet before attempting any cleaning or maintenance.
AFTER EACH WORKOUT: Wipe off the console and other treadmill surfaces with a clean, water
dampened soft cloth to remove excess perspiration. USE NO CHEMICALS.
WEEKLY: Use of a treadmill mat is recommended for ease of cleaning. Dirt from your shoes contacts the
belt and eventually makes it to underneath the treadmill. Vacuum underneath treadmill once a week.
DECK LUBRICATION
The walking belt has been pre-lubricated at the factory. However, it is recommended that the walking board
be checked periodically for lubrication to ensure optimal treadmill performance.
Every 30 days or 30 hours of operation, lift the sides of the walking belt and feel the top surface of the
walking board as far under as you can reach. If you feel signs of silicone, no further lubrication is required.
If it feels dry to the touch, follow the instructions below.
KEYS recommends “Lube N Walk” for cleaning and lubricating the treadmill belt and deck. Ask your re-
tailer or call KEYS at 800-340-0482. You may also use silicone such as “Napa 8300” (available at most
stores).
TO APPLY LUBRICANT TO THE WALKING BOARD
1) Position the walking belt so that the seam is located on top and in the center of the center of the walking
board.
2) Insert the spray nozzle into the spray head of the lubricant can.
3) While lifting the side of the walking belt, position the spray nozzle between the walking belt and the
board approximately 6” from the front of the treadmill. Apply the silicone spray to the walking board,
moving from the front of the treadmill to the rear. Repeat this on the other side of the belt. Spray
approximately 4 seconds on each side.
4) Allow the silicone to ‘set’ for one minute before using the treadmill.
WARNING: Do not overlubricate the walking board. Excess lubricant should be wiped off with a clean towel.
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Change Miles per hour to Kilometers per
Your treadmill will operate in British Units (miles per hour) or International Units (kilometers per hour). All treadmills
are calibrated at the factory for British Units (miles per hour). To change the display to read in kilometers, follow the
steps described here:
1) Turn power OFF on the console. (Do not unplug treadmill) Attach the magnet safety key to the console.
2) Activate the calibration mode switch by inserting the eraser end of a pencil into the opening in the backside of the
console (see diagram below).
3) Depressing the calibration mode switch ONCE; CL11 should appear in the TIME window.
4) Pressing the SPEED +/- button will activate your choice.
5) To accept the setting, press the POWER button.
Page 18
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Troubleshooting Guide
Treadmill will not start.
1) Is the Safety Key inserted into the Treadmill Console?
2) Make sure the power cord is plugged into a surge protector, the surge protector is plugged into a
properly grounded outlet, and the surge protector is turned on. (Refer to “Power Requirements” on
page 8)
3) Check the circuit breaker located on the front of the treadmill. If the switch protrudes, it has tripped.
Wait five minutes and then press the switch back in.
4) Check the house electrical breaker box and the circuit breaker for the room the treadmill is located in.
If it has tripped, reset or have an electrician replace the breaker in home.
5) Have an electrician check for inadequate voltage at the outlet.
Treadmill losses power during use.
1) Check the circuit breaker located on the front of the treadmill. If the switch protrudes, it has tripped.
Wait five minutes and then press the switch back in.
2) Check the house electrical breaker box and the circuit breaker for the room the treadmill is located in.
If it has tripped, reset or have an electrician replace the breaker in home.
3) If treadmill still will not operate, please call Keys Technical Service at (888) 340-0482.
Treadmill walking belt slows during use.
1) Check to make sure the treadmill is securely plugged into an UL-listed surge protector, rated at 15
amps, with a 14-gauge cord of five feet or less and the surge protector is securely plugged into the
outlet.
2) If treadmill still will not operate, please call Keys Technical Service at (888) 340-0482.
Treadmill walking belt slips or is not centered on rear roller.
1) Refer to “Belt Adjustment and Tension” section on page 14.
2) Need help? Call Keys Technical Service at (888) 340-0482.
Treadmill Error Messages.
Your treadmill is equipped with a software package that enables error messages to be displayed when
there is a problem. To avoid possible damage to the treadmill and the possibility of injury, do not
operate the treadmill until the problem is corrected. Call Keys Technical Service at (888) 340-0482.
Page 19
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Parts & Diagrams
MS4200
MS4400HR
05-0033
05-0033
04-0019
24-0176
09-0020
03-0014
06-0164
12-0022
06-0148
06-0079
12-0018
MS4200
04-0004
06-0147
24-0178
08-0115
MS4400HR
04-0004
1
2
Left Side Extrusion Rail
Right Side Extrusion Rail
Treadmill Belt
05-0033
05-0033
04-0019
24-0176
09-0020
03-0014
06-0164
12-0022
06-0148
06-0079
12-0018
12
13
14
15
Poly V Belt
Motor Hood Cover
Console Assembly
Controller
06-0147
3
06-0124
4
Front Roller Assembly
Rear Roller
08-0115
5
6
Treadmill Deck
End Cap
7
8
Elevation Motor (actuator)
Bottom Motor Pan
Motor Fan
9
10
11
Motor
Page 20
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MS4200/4400HR- Parts List
PART #
02-0004
DESCRIPTION
SCREW-8x5/8 PHIL PH AB BLACK
SCREW-8x5/8 PPH HILO BLACK TPB
NUT 5/16-18 NYLOCKZP
QTY PART #
08-0004
11 08-0112
DESCRIPTION
BREAKER-CIRCIT-15AMP
QTY
1
1
2
2
1
1
2
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
9
2
4
2
2
8
2
1
1
7
2
2
2
2
9
1
1
1
1
1
1
1
1
9
02-0005
02-0007
02-0009
02-0013
02-002A
02-0011
02-0015
02-0019
02-0021
02-0022
02-0018
02-0024
02-0027
02-0020
02-0058
02-0119
02-0036
02-0038
02-0145
02-0050
02-0146
02-0147
02-0149
02-0151
03-0014
04-0004
04-0019
05-0033
02-0119
06-0004
06-0012
02-0137
02-0141
02-0143
06-0029
06-0079
06-0090
06-0117
06-0014
06-0016
06-0021
06-0024
06-0147
06-0148
06-0149
06-0161
06-0163
06-0164
08-0099
06-0084
08-0115
08-0121
07-0050
MEBRANE LED FOR WEDGE CONSOLE
ROD - AXLE 3/8 X 2"
2
4
18-0005
08-0027
NUT-HEX 5/16 WIZ-FL-LK-ZP
WASHER LOCK 1/4"
SWITCH-REMOTE-W/HARNESS
ENCODER-OPTICAL-ALEPH
CORE-ERRITE
16 08-0047
SPRING DECK LIFT
4
9
2
4
2
4
4
4
08-0077
19-0173
19-0188
19-0189
23-0107
24-0176
10-0017
24-0178
WASHER FLAT 5/16 16GA ZP USS
WASHER SPRING
BRKT LINKAGE
BRKT SPEED BULLET
BOLT-CARRIAGE 10-24x1 1/2
WASHER 9/32 5/8 1/8THICK ZP
NUT-NYLOCK HEX 10-24
BRKT MAGNET
UPRIGHTASSEMBLY NEW FOLD - WEDGE
FRONT ROLLER ASSEMBLY
TAPE-FOAM-1"X75ft
NUT-PUSH 3/8 HAT BLACK 375012
CARRIAGE BOLT 5/16x1 GRADE 5 ZP
NUT-T HF 14209H-DB
CONSOLE ASSEM MS4200
SCREW PPH #4 X 5/8" TYPE AB
TETHER HOUSING FOR WEDGE CONSOLE
INSERT LED FOR CONSOLE
CONSOLE WEDGE GRAY
CORD-POWER-90"
16 02-0140
SCREW-SHCS 1/4-20x2 1/2"
WASHER-FLAT NYLON 3/8
SCREW-HEX HD 1/4-20x3 1/4"
SCREW-PPH 8x5/8 GREEN HEAD
WRENCH-ALLEN 3/16 SHAFT ARM
PIN COTTER 1"
2
2
8
1
1
2
4
2
9
2
1
1
1
1
2
8
4
2
2
6
8
4
1
4
2
1
7
1
1
1
1
1
2
1
1
1
1
1
1
1
06-0139
06-0140
06-0142
13-0011
13-0014
13-0020
06-0106
06-0107
06-0108
06-0109
06-0110
06-0111
06-0112
06-0113
06-0114
06-0115
06-0116
06-0117
06-0118
06-0119
06-0120
06-0121
06-0122
06-0123
06-0124
06-0125
06-0129
06-0130
06-0132
11-0013
11-0020
11-0022
11-0023
12-0018
12-0022
13-0045
13-0046
14-0028
14-0054
14-0171
WIRE-JUMPER 12"-220V-KEYS SERIES
HARNESS CONTROLLER 80"
LIMIT SWITCH
NUT-NYLOCK HEX 1/4-20
BOLT SHCS FULL TRD 1/4-20 X 1 3/4
BOLT CRG FULL BODY 5/16-18 X 1"
BOLT CRG 5/16-18 X 1 3/4" GRADE 5
BOLT SHOULDER SHSB 3/8 X 3/8" 5/16-18
WALKBOARD KORETRON 56" FOLD
BELT- POLY V- 190J8
HARNESS, KILL SWITCH SM9.3
OVERLAY CONSOLE MS4200
DECAL OPERATION WEDGE CONSOLE
INST PACKET GRAY FOLD
DECAL DISCONNECT-MOTOR COVER
TETHER KILL PIN
WALKBELT 1PLY 19.51 X 113.75 FOLD
EXTRUSION SIDE BRD LT & RT 56" FOLD
HEX SCREW HD 1/4-20x3 1/4"
PLUG-BASE 1.5 X 3" -16GA
WHEEL 3"
DECAL-10YR MOTOR WARRANTY
END CAP DUAL GRAY
INST MANUAL NEW FOLD
SPRING-DECK LIFT
WASHER- FLAT 5/16 16GA ZP USS
WASHER- SPRING
PLUG PUSH-IN
PUSH NUT BLACK.112 SHAFT
HEX BOLT 1/4-20x1"
NUT-PUSH 3/8 HAT BLACK 375012
SCREW-SHCS 1/4-20 X 2 1/2"
WASHER-FLAT NYLON 3/8
SCREW- HEX HD 1/4-20 X 3 1/4"
PIN COTTER 1"
SPACER- WHEEL-3/16
FAN- MCM MOTOR-5" W/ 1/2" SHAFT
WHEEL- 2 3/8" (SNAP ON)
SWITCH HOUSING ROUND GRAY
BUSHING-STRAIN RELIEF #1237
TIES-WIRE
CONSOLE ASSEMBLY LED MS4400HR
INST PACKET MS4400HR
BRACKET-MOTOR COVER
GUIDE BELT GLAVANIZED
BRKT CHANNEL SUPPORTS
AXLE- WHEEL - 2 3/8"
CLAMP WIRE 3367 7/16
CLIP-ALLEN WRENCH
COVER FOR MOTOR FOLD GRAY
BOTTOM PAN FOR WEDGE FOLD GRAY
SHEET BOTTOM FOR FOLD BLACK
PLUG RECT 1X3X16 GA
PIVOT PIN FOLD 3/8" & CHAMFER
BUSHING KEYED
FLYWHEEL 1.125 10MPH FOR 2.5 ROLLERS
MOTOR- MCM#2953 2.0HP-REPLACES
ACTUATOR 400LB -MAYTECH
JUMPER WIRE FOR SPEED BULLET
HARNESS CONTROLLER 80"
DECAL- INCLINE REMOTE
DECAL- SPEED REMOTE
EXT BOOT RT GRAY
EXT BOOT LT GRAY
SPEED BULLET
BAG-PLASTIC 12x12 3MIL-INST PACKET
CONTROLLER 08-0050 W/OUT SWITCH
MAGNET & HOUSING
ELECTRONICS 5 WIN LED GREEN
STICKER- MOTOR HP 2.0
09-0020
10-0004
10-0018
10-0020
10-0023
10-0024
ROLLER REAR 2.5"X24.5" CONV/FOLD
FOOT- RUBBER
1
2
1
2
8
1
14-0205
14-0337
DECAL- DISCONNECT- MOTOR COVER
DECAL MOTOR COVER MS4200/6200
1
1
GROMMET-SPEED BULLET
GRIP MOLDED ROUND
BOARD ISOLATORS 17/32" SHORT
TAPE-ADHESIVE 1'X 108FT ST567
Page 21
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KEYS FITNESS PRODUCTS, LP – LIMITED WARRANTY
PLEASE CONSULT YOUR PHYSICIAN BEFORE USING THIS PRODUCT.
This Limited Warranty applies in the United States and Canada only to products manufactured or distributed by Keys Fitness Products, LP (“Keys”) under the Keys brand
name. The warranty period to the original purchaser of the MS4200 and MS4400HR treadmills are (lifetime) on the frame and one (1) year labor. In addition, the MS4200 and MS4400HR
includes ten (10) years on the motor and two (2) year parts warranty.
Keys warrants that the Product you have purchased for non-commercial, personal, family, or household use from Keys or from an authorized Keys reseller is free from
defects in materials or workmanship under normal use during the warranty period. Your sales receipt, showing the date of purchase of the Product, is your proof of the date of
purchase. This warranty only extends to you, the original purchaser. It is not transferable to anyone who subsequently purchases the Product from you. It excludes expendable
parts. This Limited Warranty becomes VALID ONLY if the treadmill is assembled/installed by a Keys Fitness authorized dealer/technician unless otherwise authorized by Keys Fitness
in writing (if anyone other than a Keys Fitness authorized dealer/technician assembles a Keys Fitness treadmill the warranty will be void unless accompanied by written authorization
by Keys Fitness).
During the warranty period Keys will at no additional charge, repair or replace (at Keys’ option) the product if it becomes defective, malfunctions, or otherwise fails to
conform with this Limited Warranty under normal non-commercial, personal, family or household use. In repairing the Product, Keys may replace defective parts, or at the option of
Keys, serviceable used parts that are equivalent to new parts in performance. All exchanged parts and Products replaced under this warranty will become the property of Keys. Keys
reserves the right to change manufacturers of any part to cover any existing warranty.
To obtain warranty service, you must contact a Keys authorized service technician or Keys Fitness at our phone numbers located in this manual. Any parts determined to
be defective must be returned to Keys to obtain warranty service. You must prepay any shipping charges, export taxes, custom duties and taxes, or any other charges associated with
transportation of the parts or Product. In addition, you are responsible for insuring any parts or Product shipped or returned. You assume the risk of loss during shipment. You must
present Keys with proof-of-purchase documents (including the date of purchase). Any evidence of alteration, erasing or forgery of proof-of-purchase documents will be cause to void
this Limited Warranty.
This warranty does not extend to any product not purchased from Keys or from an authorized Keys reseller. This Limited Warranty does not extend to any Product that
has been damaged or rendered defective; (a) as a result of accident, misuse, or abuse; (b) by the use of parts not manufactured or sold by Keys; (c) by modification of the Product or
normal wear and tear; (d) operation on incorrect power supplies; or (e) as a result of service by anyone other than Keys, or an authorized Keys warranty service provider. Product on
which the serial number has been defaced or removed is not eligible for warranty service. Should any Product be submitted for warranty service be found ineligible therefore, an
estimate of repair cost will furnished and the repair will be made if requested by you upon Keys’ receipt of payment or acceptable arrangements for payment.
EXCEPT AS EXPRESSLY SET FORTH IN THIS WARRANTY, KEYS MAKES NO OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING ANY IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. KEYS EXPRESSLY DISCLAIMS ALL WARRANTIES NOT STATED IN THIS LIMITED WARRANTY. ANY IMPLIED
WARRANTIES THAT MAY BE IMPOSED BY LAW ARE LIMITED TO THE TERMS OF THIS LIMITED WARRANTY. NEITHER KEYS NOR ANY OF ITS AFFILIATES SHALL BE
RESPONSIBLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES. SOME STATES DO NOT ALLOW LIMITATIONS ON HOW LONG AN IMPLIED WARRANTY LASTS OR THE
EXCLUSION OR LIMITATION OF INCIDENTAL OR CONSEQUENTIAL DAMAGES, SO THE ABOVE LIMITATIONS OR EXCLUSION MAY NOT APPLY TO YOU. This Limited Warranty
gives you specific legal rights and you may also have other rights that may vary from state to state. This is the only express warranty applicable to Keys-branded products. Keys
neither assumes nor authorizes anyone to assume for it any other express warranty.
PLEASE SEND IN THE ATTACHED WARRANTY CARD WITHIN TEN (10) DAYS OF PURCHASE OR REGISTER YOUR TREADMILL ONLINE AT www.keysfitness.com
KEYS FITNESS PRODUCTS, P.O. BOX 551239, DALLAS, TX 75355-1239. THANK YOU!
KEYS FITNESS TREADMILL WARRANTY
TELEPHONE
LAST
M.I.
FIRST
ADDRESS
CITY
APT. NO.
Z
S
SERIAL NO.
DATE OF PURCHASE
MODEL NO.
How important are each feature:
Least Most
Unique Features
Horsepower
Warranty
Price
Look/Design
Folding Feature
Other Comments:
_______________
Where did you learn about treadmills?
TV____ Radio____ Friend____
_______________
_______________
_______________
In Store Display____ Salesperson___
Print ad/flyer____ Internet______
How do you plan to use the treadmill?
Walk____ Run_____ Both_____
Who will use the treadmill?
Male____ Female_____ Both_____
Why did you purchase a treadmill?
Dr.’s Orders____ Loose Weight____
In-home convenience____
Improve Cardiovascular Fitness___
Safety from outdoors____
KEYS FITNESS respects the rights of your privacy. Our
company will not sell or distribute to others the information
above. This information is used to track our product
quality and to contact you in the event of a product safety
concern. It may be used to offer you future Keys products
only through the mail. Please check here if wish not to
receive any additional information on Keys products.
How many family members? _____
AGE:
15-24____ 25-34____
35-44____ 45-54____
55-64____ 65 +_____
Other __________________________
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