ProForm Home Gym 928L User Manual

¨
Model No. 831.288220  
Serial No  
The serial number is found in the  
location shown below. Write the  
serial number in the space above.  
Serial  
Number  
Decal  
CAUTION  
Read all precautions and  
instructions in this manual  
before using this equipment.  
Keep this manual for future  
reference.  
USERÕS MANUAL  
SEARS, ROEBUCK AND CO., HOFFMAN ESTATES, IL 60179  
 
BEFORE YOU BEGIN  
Thank you for selecting the new PROFORM¨ 928L  
exercise cycle. The PROFORM 928L blends  
advanced engineering with contemporary styling to  
provide you with a low-impact workout in the conve-  
nience and privacy of your own home.  
Saturday, 7 a.m. until 7 p.m. Central Time (excluding  
holidays). To help us assist you, please mention the  
product model number and serial number when call-  
ing. The model number is 831.288220. The serial  
number can be found on a decal attached to the  
PROFORM¨ 928L (see the front cover of this manual  
for the location of the decal).  
For your benefit, read this manual carefully before  
you use the PROFORM¨ 928L. If you have questions  
after reading the manual, please call our toll-free  
HELPLINE at 1-800-736-6879, Monday through  
Before reading further, please familiarize yourself with  
the parts that are labeled in the drawing below.  
Multi-position  
Comfort  
Handlebars  
Console  
Resistance Knob  
Seat  
Seat Post  
Seat Pin  
FRONT  
Flywheel  
Side Shield  
Pedal  
BACK  
RIGHT SIDE  
3
 
ASSEMBLY  
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 allen wrench  
,
a phillips screwdriver  
, and two adjustable wrenches  
.
1. Hold one of the Stabilizers (5) against the Frame  
(1), with the square holes facing away from the  
Frame. Attach the Stabilizer with two M8 x 65mm  
Carriage Bolts (38) and two M8 Nylon Locknuts  
(39).  
1
1
39  
Attach the other Stabilizer (not shown) in the same  
manner.  
Square  
Holes  
39  
5
38  
2. Carefully slide the Handlebar Post (2) down into  
place as shown. Secure the Handlebar Post with  
eight M4 x 16mm Tapping Screws (30).  
2
2
30  
30  
3. Slide the bottom of the Left Handlebar (3) into the  
Handlebar Post (2). Be sure that the holes in the  
Handlebar and the Handlebar Post line up. Attach  
the Handlebar with two M6 x 34mm Button Head  
Bolts (14) and two M6 Nylon Locknuts (37).  
3
4
Attach the Right Handlebar (4) in the same manner.  
39  
3
14  
2
4
 
4. The Console (7) requires two "AA" batteries (not  
included). Alkaline batteries are recommended.  
Refer to the inset drawing. Remove the battery door  
from the Console. Press two batteries into the bat-  
tery compartment. Make sure that the negative  
ends of the batteries (marked ÒÐÓ) are touching  
the springs in the battery compartment. Reattach  
the battery door.  
4
7
33  
Console  
Plate  
Console  
Wire  
Connect the console wire to the Reed Switch Wire  
(33).  
Slide the Console (7) onto the console plate. Note:  
The Console attaches by friction; it does not snap  
into place.  
Batteries  
Battery Door  
5. Insert the Seat Post (10) into the Frame (1). Press  
the Frame Bushing (40) into the Frame. Align one of  
the holes in the Seat Post with the hole in the  
Frame. Insert the Seat Pin (35) through the Frame  
and the Seat Post to select the desired seat height.  
Make sure to insert the Seat Pin through one of  
the holes in the Seat Post; do not insert the Seat  
Pin under the Seat Post.  
5
11  
36  
39  
Next, attach the Seat (11) to the Seat Post (10) with  
one M8 x 50mm Carriage Bolt (36) and one M8  
Nylon Locknut (39).  
10  
40  
35  
1
6. Identify the Left Pedal (21). (The Left Pedal is  
marked with an ÒL.Ó) Using an adjustable wrench,  
tighten the Left Pedal counterclockwise into the left  
arm of the Crank (20).  
6
Tighten the Right Pedal (not shown) clockwise into  
the Right arm on the Crank.  
20  
21  
7. Make sure that all parts are properly tightened before you use the exercise cycle.  
5
 
HOW TO USE THE EXERCISE CYCLE  
HOW TO ADJUST THE SEAT  
USING THE MULTI-POSITION HANDLEBARS  
For effective  
exercise, the  
Seat (11) 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 Seat,  
first hold the  
Seat and  
Your exercise  
cycle features  
padded, multiple-  
position handle-  
bars. They are  
designed to offer  
a maximum  
amount of com-  
fort while exer-  
cising.  
11  
10  
1
DESCRIPTION OF THE CONSOLE  
35  
The console features  
five modes that pro-  
vide instant exercise  
feedback during your  
workouts. The modes  
are described below.  
Display  
remove the Seat Pin (35). Align one of the holes in  
the Seat Post (10) with the hole in the Frame (1).  
Insert the Seat Pin into the Frame and the Seat Post.  
Caution: Make sure to insert the Seat Pin through  
one of the holes in the Seat Post; do not insert the  
Seat Pin under the Seat Post.  
¥ SpeedÑDisplays  
your pedaling  
HOW TO ADJUST THE PEDALING RESISTANCE  
Mode Indicators  
speed, in miles per  
hour.  
To vary the  
intensity of your  
exercise, the  
pedaling resis-  
tance can be  
adjusted. The  
resistance is  
controlled with  
the Resistance  
Knob (25). To  
¥ TimeÑDisplays the  
elapsed time. Note:  
If you stop pedaling  
for ten seconds or  
longer, the time  
25  
mode will pause  
until you resume.  
increase the  
resistance, turn  
¥ DistanceÑDisplays the total distance you have ped-  
aled, in miles.  
the Resistance Knob clockwise; to decrease the resis-  
tance, turn the Resistance Knob counterclockwise.  
¥ CalorieÑDisplays the approximate number of calo-  
ries you have burned.  
BATTERY INSTALLATION  
¥ ScanÑDisplays the speed, time, distance, and calo-  
rie modes, for 5 seconds each, in a repeating cycle.  
Before the console can be operated, two Ò"AA"Ó bat-  
teries must be installed. If you have not installed bat-  
teries, see assembly step 4 on page 5.  
6
 
HOW TO OPERATE THE CONSOLE  
Speed, time,  
distance or  
1. To turn on the power, press the on/reset button or  
simply begin pedaling. When the power is turned  
on, the entire display will appear for two seconds.  
The console will then be ready for operation.  
calorie modeÑ  
To select one of  
these modes for  
continuous dis-  
play, press the  
mode button  
2. Select one of the five modes:  
repeatedly. The  
mode indicators  
will show which mode is selected. Make sure that  
the scan mode is not selected.  
Scan modeÑ  
When the power  
is turned on, the  
scan mode will  
automatically be  
selected. One  
3. To reset the display, press the on/reset button.  
mode indicator  
will show that  
the scan mode  
is selected, and  
a flashing mode indicator will show which mode is  
currently displayed. Note: If a different mode is  
selected, you can select the scan mode again by  
repeatedly pressing the mode button.  
4. To turn off the power, simply wait for about four min-  
utes. Note: The console has an Òauto-offÓ fea-  
ture. If the pedals are not moved and the con-  
sole buttons are not pressed for four minutes,  
the power will turn off automatically in order to  
conserve the batteries.  
STORAGE AND TROUBLE-SHOOTING  
Inspect and tighten all parts of the exercise cycle reg-  
ularly. Replace any worn parts immediately.  
HOW TO TIGHTEN THE CRANK  
If the arms of  
the Crank (20)  
become loose,  
they should be  
tightened in  
order to prevent  
excessive wear.  
Loosen the  
The exercise cycle can be cleaned with a soft, damp  
cloth. Avoid spilling liquid on the console. Keep the  
console out of direct sunlight or the display may be  
damaged. Remove the batteries when storing the  
exercise cycle.  
Slotted  
Crank  
Nut  
Crank  
Nut  
BATTERY REPLACEMENT  
crank nut on  
the left arm of  
the Crank.  
Place the end  
of a standard  
If the console does not function properly, the batteries  
should be replaced. See assembly step 4 on page 5.  
In addition, make sure that the console wire is con-  
nected to the reed switch wire.  
20  
screwdriver in one of the slots in the slotted crank nut.  
Lightly tap the screwdriver with a hammer to turn the  
slotted crank nut counterclockwise until the arms are  
no longer loose. Do not overtighten the slotted  
crank nut. When the slotted crank nut is properly  
tightened, retighten the Crank Nut.  
7
 
HOW TO ADJUST THE REED SWITCH  
end of the Resistance Strap (17) and pull it back  
slightly to remove any slack. While holding the end of  
the Resistance Strap, fully close the Strap Buckle.  
Turn the crank for a moment to make sure that there  
is not too much resistance.  
If the console does not display correct feedback, the  
reed switch should be adjusted. In order to adjust the  
reed switch, the Left Side Shield (12) must be remov-  
ed. Remove the four Side Shield Screws (15) from the  
Right Side Shield (13) and the three M4 x 16mm  
Tapping Screws (30) from the bottom of the Left Side  
Shield. Carefully slide the Left Side Shield forward off  
the arm of the Crank (20) and remove it.  
HOW TO ADJUST THE DRIVE BELT  
The exercise cycle features a drive belt that must be  
kept properly adjusted. If the belt causes excessive  
noise or slips as you pedal, the belt should be  
checked. To do this, the side shields must first be  
removed. Refer to the instructions on this page and  
remove the left side shield. Next, remove the right  
side shield the same way.  
15  
13  
Press down on  
the center of the  
23  
15  
Drive Belt (23)  
between the front  
and rear pulleys.  
There should be  
from 1/4Ó to 1/2Ó  
of movement in  
the center of the  
Belt.  
20  
12  
30  
30  
Next, locate the  
Reed Switch (33).  
46  
Turn the crank until  
the Magnet (46) is  
aligned with the  
Reed Switch.  
Loosen but do not  
remove the M4 x  
16mm Screw (30).  
Slide the Reed  
If the drive belt is  
properly adjust-  
ed, reattach the  
side shields. If  
the Belt needs to  
be adjusted,  
loosen the Axle  
Nut (29) on each  
side of the fly-  
Side View  
30  
33  
27  
Switch slightly clos-  
er to or away from the Magnet. Retighten the Screw.  
Turn the crank for a moment. Repeat until the console  
displays correct feedback. When the Reed Switch is  
correctly adjusted, reattach the left side shield.  
29  
wheel. To tighten  
the Belt, turn the  
Adjustment Nuts  
(27) clockwise; to loosen the Belt, turn the Adjustment  
Nuts counterclockwise. Make sure that the Flywheel is  
straight and tighten the Axle Nuts (29). Reattach the  
side shields.  
HOW TO ADJUST THE RESISTANCE STRAP  
If there is not enough pedaling resistance when the  
resistance knob is turned to the highest setting, the  
Resistance Strap (17) may need to be adjusted.  
To adjust the Resistance Strap, first turn the resis-  
tance knob  
to the low-  
est setting.  
Next, locate  
and open  
the Strap  
Buckle (18)  
on the  
underside  
of the side  
shields.  
Grip the  
17  
18  
8
 
CONDITIONING GUIDELINES  
The following guidelines will help you to plan your  
exercise program. Remember that proper nutrition  
and adequate rest are essential for successful results.  
If your goal is to burn fat, adjust the intensity of your  
exercise until your heart rate is near the lowest num-  
ber in your training zone as you exercise.  
For maximum fat burning, adjust the intensity of your  
exercise until your heart rate is near the middle num-  
ber in your training zone as you exercise.  
WARNING: Before beginning this or any exer-  
cise program, consult your physician. This is  
especially important for persons over the age  
of 35 or persons with pre-existing health  
problems.  
Aerobic Exercise  
If your goal is to strengthen your cardiovascular sys-  
tem, your exercise must be Òaerobic.Ó Aerobic exer-  
cise is activity that requires large amounts of oxygen  
for prolonged periods of time. This increases the  
demand on the heart to pump blood to the muscles,  
and on the lungs to oxygenate the blood. For aerobic  
exercise, adjust the intensity of your exercise until  
your heart rate is near the highest number in your  
training zone.  
EXERCISE INTENSITY  
Whether your goal is to burn fat or to strengthen your  
cardiovascular system, the key to achieving the  
desired results is to exercise with the proper intensity.  
The proper intensity level can be found by using your  
heart rate as a guide. The chart below shows recom-  
mended heart rates for fat burning, maximum fat  
burning, and cardiovascular (aerobic) exercise.  
HOW TO MEASURE YOUR HEART RATE  
To measure your  
heart rate, first exer-  
cise for at least four  
minutes. Then, stop  
exercising and place  
two fingers on your  
wrist as shown. Take  
a six-second heart-  
beat count, and mul-  
tiply the result by 10  
to find your heart  
rate. For example, if your six-second heartbeat count  
is 14, your heart rate is 140 beats per minute. (A six-  
second count is used because your heart rate will  
drop rapidly when you stop exercising.)  
To find the proper heart rate for you, first find your age  
on the bottom of the chart (ages are rounded off to  
the nearest ten years). Next, find the three numbers  
above your age. The three numbers are your Òtraining  
zone.Ó The lowest number is the recommended heart  
rate for fat burning; the middle number is the heart  
rate for maximum fat burning; the highest number is  
the heart rate for aerobic exercise.  
WORKOUT GUIDELINES  
Each workout should include the following three parts:  
A warm-up, consisting of 5 to 10 minutes of stretch-  
ing and light exercise. A proper warm-up increases  
your body temperature, heart rate, and circulation in  
preparation for exercise.  
Burning Fat  
Training zone exercise, consisting of 20 to 30 min-  
utes of exercising with your heart rate in your training  
zone. (During the first few weeks of your exercise pro-  
gram, do not keep your heart rate in your training  
zone for longer than 20 minutes.)  
To burn fat effectively, you must exercise at a rela-  
tively low intensity level for a sustained period of time.  
During the first few minutes of exercise, your body  
uses easily accessible carbohydrate calories for ener-  
gy. Only after the first few minutes of exercise does  
your body begin to use stored fat calories for energy.  
9
 
A cool-down, with 5 to 10 minutes of stretching. This  
will increase the flexibility of your muscles and will  
help to prevent post-exercise problems.  
workouts. After a few months of regular exercise, you  
may complete up to five workouts each week, if  
desired. Caution: Be sure to progress at your own  
pace and avoid overdoing it. Incorrect or excessive  
training may result in injury to your health.  
EXERCISE FREQUENCY  
To maintain or improve your condition, plan three work-  
outs each week, with at least one day of rest between  
Remember, the key to success is make exercise a  
regular and enjoyable part of your everyday life.  
PART LISTÑModel No. 831.288220  
R0399A  
Key No. Qty.  
Description  
Key No. Qty.  
Description  
1
2
3
4
5
6
7
8
1
1
1
1
2
4
1
2
2
1
1
1
1
2
4
1
1
1
1
1
1
1
1
1
1
Frame  
26  
27  
28  
29  
30  
31  
32  
33  
34  
35  
36  
37  
38  
39  
40  
41  
42  
43  
44  
45  
46  
47  
48  
#
1
2
2
2
18  
1
2
1
1
1
1
2
4
5
3
3
1
4
1
1
1
1
2
1
1
Flywheel Axle  
Handlebar Post  
Left Handlebar  
Right Handlebar  
Stabilizer  
Stabilizer Endcap  
Console  
Foam Armrest  
Foam Grip  
Seat Post  
Adjustment Nut  
Adjustment Bolt  
Axle Nut  
M4 x 16mm Tapping Screw  
Flat Head Screw  
Handlebar Endcap  
Reed Switch/Wire  
Reed Switch Clip  
Seat Pin  
M8 x 50mm Carriage Bolt  
M6 Nylon Locknut  
M8 x 65mm Carriage Bolt  
M8 Nylon Locknut  
Frame Bushing  
Post Endcap  
M4 x 14mm Bolt  
M4 Washer  
Spring  
9
10  
11  
12  
13  
14  
15  
16  
17  
18  
19  
20  
21  
22  
23  
24  
25  
Seat  
Left Side Shield  
Right Side Shield  
M6 x 34mm Button Head Bolt  
Side Shield Screw  
Flywheel  
Resistance Strap  
Strap Buckle  
Crank Hardware Assembly  
Crank/Pulley  
Left Pedal  
M4 Nut  
Magnet  
Plastic Sleeve  
M10 Washer  
UserÕs Manual  
Allen Wrench  
Right Pedal  
Drive Belt  
Resistance Cable  
Resistance Knob  
#
Note: Ò#Ó refers to a non-illustrated part. Specifications are subject to change without notice. See the back cover  
of this manual for information about ordering replacement parts.  
10  
 
EXPLODED DRAWINGÑModel No. 831.288220  
R0399A  
15  
32  
4
7
25  
15  
37  
24  
37  
13  
3
30  
14  
47  
12  
2
8
30  
45  
43  
42  
30  
41  
11  
9
44  
41  
39  
36  
27  
28  
40  
16  
29  
48  
10  
26  
30  
30  
17  
20  
30  
35  
27  
41  
40  
22  
30  
28  
48  
29  
30  
33  
6
34  
39  
19  
46  
38  
1
23  
39  
19  
39  
5
18  
20  
31  
6
39  
6
21  
5
6
38  
11  
 
The model number and serial number of your PROFORM¨ 928L  
are listed on a decal attached to the frame. See the front cover of  
this manual to find the location of the decal.  
Model No. 831.288220  
All replacement parts are available for immediate purchase or  
special order when you visit your nearest SEARS Service Center.  
To request service or to order parts by telephone, call the toll-free  
numbers listed at the left.  
QUESTIONS?  
If you find that:  
¥ you need help assembling or  
operating the PROFORM¨ 928L  
When requesting help or service, or ordering parts, please be  
prepared to provide the following information:  
¥ a part is missing  
¥ or you need to schedule repair  
service  
¥ The MODEL NUMBER of the product (831.288220).  
¥ The NAME of the product (PROFORM¨ 928L).  
call our toll-free HELPLINE  
¥ The KEY NUMBER and DESCRIPTION of the PART (see the  
PART LIST and the EXPLODED DRAWING on pages 10 and 11).  
1-800-736-6879  
MondayÐSaturday, 7 amÐ7 pm  
Central Time (excluding holidays)  
REPLACEMENT  
PARTS  
If parts become worn and need to  
be replaced, call the following toll-  
free number  
1-800-FON-PART  
(1-800-366-7278)  
FULL 90 DAY WARRANTY  
For 90 days from the date of purchase, if failure occurs due to defect in material or workmanship in this  
SEARS BIKE EXERCISER, contact the nearest SEARS Service Center throughout the United States  
and SEARS will repair or replace the BIKE EXERCISER, free of charge.  
This warranty does not apply when the BIKE EXERCISER is used commercially or for rental purposes.  
This warranty gives you specific legal rights, and you may also have other rights which vary from state  
to state.  
SEARS, ROEBUCK AND CO., DEPT. 817WA, HOFFMAN ESTATES, IL 60179  
Part No. 149618 R0399A  
Printed in China © 1999 Sears, Roebuck, and Co.  
 

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