Sunny Health & Fitness SF-B1421B User manual

BELT DRIVE
INDOOR CYCLING BIKE
SF-B1421B
USER MANUAL
IMPORTANT: Read all instructions carefully before using this product. Retain owner’s manual
for future reference. For customer service, please contact: [email protected]

IMPORTANT SAFETY INFORMATION
We thank you for choosing our product. To ensure your safety and health, please use this
equipment correctly. It is important to read this entire manual before assembling and using the
equipment. Safe and effective use can only be assured if the equipment is assembled,
maintained, and used properly. It is your responsibility to ensure that all users of the equipment
are informed of all warnings and precautions.
1. Before starting any exercise program you should consult your physician to determine if you
have any medical or physical conditions that could put your health and safety at risk or prevent
you from using the equipment properly. Your physician’s advice is essential if you are taking any
medication that may affect your heart rate, blood pressure, or cholesterol level.
2. Be aware of your body’s signals. Incorrect or excessive exercise can damage your health.
Stop exercising if you experience any of the following symptoms: pain, tightness in your chest,
irregular heartbeat, shortness of breath, lightheadedness, dizziness, or feelings of nausea. If
you do experience any of these conditions, you should consult your physician before continuing
with your exercise program.
3. Keep children and pets away from the equipment. The equipment is designed for adult use
only.
4. Use the equipment on a solid, flat level surface with a protective cover for your floor or carpet.
To ensure safety, the equipment should have at least 2 feet of free space all around it.
5. Ensure that all nuts and bolts are securely tightened before using the equipment. The safety
of the equipment can only be maintained if it is regularly examined for damage and/or wear and
tear.
6. It is recommended that you lubricate all moving parts on a monthly basis.
7. Always use the equipment as indicated. If you find any defective components while
assembling or checking the equipment, or if you hear any unusual noises coming from the
equipment during exercise, stop using the equipment immediately and don’t use the equipment
until the problem has been rectified.
8. Wear suitable clothing while using the equipment. Avoid wearing loose clothing that may
become entangled in the equipment.
9. Do not place fingers or objects into the moving parts of the equipment.
10. The maximum weight capacity of this unit is 265 pounds.
11. This equipment is not suitable for therapeutic use.
12. Move with caution when lifting and moving the equipment. Always use proper lifting
technique and seek assistance if necessary.
13. Your product is intended for use in cool, dry conditions. You should avoid storage in
extreme cold, hot, or damp areas as this may lead to corrosion and other related problems.
14. This equipment is designed for indoor use only! It is not intended for commercial use!

EXPLODED DRAWING 1
1
2
2
3
3
4
5
67
8
9
10
11
12
13
13
12
12
14
15
16
17
18
19 20
21
22
23
724
25
25
26
27
8
8
27
8
27
28
28
29
30L
30R
31
32 33
13

EXPLODED DRAWING 2
34
35
36
39
38
18
39
4142
43 44
43
45 47
44
43
43
42
50 39
38
37
34
35
36
40
31
51
53
54
56
55
37
57
58
61
62
63
64
65
66
67
59
68
69
75
74
73
72L
71
70
75
78
77
79
80
81
82
72R
71
70
84
82
49 60
52
82
84 84
84
84
84
84
84 83
46
48
74
76

PARTS LIST
No.
Description
Qty
No.
Description
Qty
1
Computer
1
38
Spacer Φ18*Φ12.2*4
2
2
Foam grip Φ23*3*480
2
39
Nut M12*1*H6*S19
3
3
End cap ф25*16
4
40
End cap Φ22*16
2
4
Foam grip Φ23*3*190
2
41
Spacer Φ18*Φ12.2*4
1
5
Handlebar
1
42
Bearing 6001-2RS
2
6
Handlebar cover 125*80*42
1
43
Screw ST4.8*10*Φ8
6
7
Washer d8*Φ16*1.5
6
44
Flywheel cover
2
8
Screw M8*16*S6
8
45
Round magnet Φ10*3 3600
1
9
Spring washer d8
4
46
Front cover
1
10
Screw M5*10*S4
1
47
Flywheel 13*Φ460
1
11
Handlebar post
1
48
Screw M10*16*S6
4
12
Bushing F38*38*F30*30*L120
3
49
Washer d6*Φ16*1.5
2
13
Adjustment knob
M16*1.5*24*Φ56
3
50
Inertia axle Φ12*150*M12*1.0
1
14
Saddle post
1
51
Tension knob M8*Φ56*43
1
15
End cap F30*30*16
1
52
Nut M10*H5.5*S17
1
16
Seat slider
1
53
Brake rod
Φ10*200*M10*15*M6*7*M10*95
1
17
Saddle 98-2
1
54
Bushing 20*20*74
1
18
Inductor
1
55
Spring Φ2.0*Φ15*54*N12
1
19
Water bottle holder
1
56
Nut 16*16*25*M10
1
20
Washer d5*Φ10*1
2
57
Washer d6*Φ16*1.5
1
21
Screw M5*16*Φ10
2
58
Nut M6*H6*S10
1
22
Nut M8*H7.5*S13
2
59
Washer d6*Φ12*1.2
2
23
Bolt M8*40*20*S14
2
60
Screw M6*12*Φ12
2
24
Transport wheels
ф42*18*ф8*22
2
61
Wool felt 110*30*8
1
25
End cap ф60
2
62
Brake board 110*27*30
1
26
Front stabilizer
1
63
Spring Φ2*Φ24*Φ13*15*N5
1
27
Arc washer d8*Φ20*2*R30
4
64
Brake stopper 35*24*2
1
28
End cap Φ60*45.5
2
65
Washer d5*Φ10*1
2
29
Rear stabilizer
1
66
Nut M5*H5.5*S10
2
30L/R
Left & Right pedal YH-76X
2
67
Screw M5*30*Φ8
2
31
Main frame
1
68
Bolt M6*12*S10
2
32
Allen wrench S6
1
69
Brake spring board t1.2*23*122
1
33
Spanner S13-14-15
1
70
Crank cap Φ25*7
2
34
Nut M12*1*H19.5*S19
2
71
Nut M10*1.25*H7.5*S14
2
35
Nut M6*H6*S10
2
72L/R
Left & Right crank arm 170
2
36
Nut M6*H5*S10
2
73
Middle axle cover Φ50*Φ32*33
1
37
Adjusting screw M6*50*Φ12*5
2
74
C Clip d17
2

No.
Description
Qty
No.
Description
Qty
75
Bearing 6203-2RS
2
80
Belt 5PK510
1
76
Wave washer d17*Φ22*0.3
1
81
Outer chain cover
81
77
Middle axle
Φ17*175*57*74.2*S25
1
82
Screw ST4.8*16*Φ10
82
78
Belt wheel Φ204*20*5PK
1
83
Shrouding board for flywheel
83
79
Inner chain cover
1
84
Screw ST4.2*13*Φ8
84

HARDWARE PACKAGE
#27 d8*Φ20*2*R30 4PCS
#20 d5*Φ10*1 2PCS
#21 M5*16*Φ10 2PCS
#13 M16*1.5*24*Φ56 3PCS
#9 d8 4PCS
#8 M8*16*S6 8PCS

26
8
27
8
27
29
27
8
31
#27 d8*Φ20*2*R30 4PCS
#8 M8*16*S6 4PCS
16
17
13
13
14
#13 M16*1.5*24*Φ56 2PCS
STEP 1:
Attach the Front and Rear Stabilizers (No. 26 & No. 29)to the Main Frame (No. 31)
using 4 Screws (No. 8) and 4 Arc Washers (No. 27). Tighten and secure with Allen
Wrench (No. 32).
Secure Saddle (No. 17)to the Seat Slider (No. 16) with Spanner (NO.33)..
Loosen and pull out the Adjustment Knob (No. 13). Adjust the Seat Slider (No. 16) and
Saddle Post (No. 14) to the desired position and reinsert and tighten Adjustment Knob
(No. 38) to secure the posts in place.

19 20
21
#20 d5*Φ10*1 2pcs
#21 M5*16*Φ10 2pcs
72L
72R
30L
30R
31
STEP 2:
Before you begin, immobilize the crank arms by turning the tension knob all the way to the
right.
Left Pedal: Align the Left Pedal (No. 30L) with the Left Crank Arm (No. 72L) at 90
degrees. Gently insert the pedal into the crank arm, turn the pedal counter-clockwise as
tightly as you can with your hand. Tighten and secure with Spanner (No. 33).
Right Pedal: Align the Right Pedal (No. 30R) with the Right Crank Arm (No. 72R) at 90
degrees. Gently insert the pedal into the crank arm, turn the pedal clockwise as tightly as
you can with your hand. Tighten and secure with Spanner (No. 33).
Connect the Water Bottle Holder (No. 19)to the Main Frame (No. 31)using 2 Screws
(No. 21)and 2 Washers (No. 20). Tighten and secure with Spanner (No. 33).
8

5
7
8
9
11
13
31
#13 M16*1.5*24*Φ56 1PC
STEP 3:
Loosen and remove the [handlebar] Adjustment Knob (No. 13). Insert Handlebar Post
(No. 11) into the sleeve located on the front of the Main Frame (No. 31). Adjust the
Handlebar Post (No. 11) to the desired position and reinsert and tighten the Adjustment
Knob (No. 13) to secure the post in place.
Secure Handlebar (No. 5) to Handlebar Post (No. 11)using 2 Screws (No. 8),2
Washers (No. 7) and 2 Spring Washers (No. 9). Tighten and secure with Spanner (No.
33).

11
5
18
1
6
1
6
I
1
6
II III
18
1
Insert the link wire of the Computer (No. 1) to the middle hole of the Handlebar Cover
(No. 6) as shown above in Figure I.
Attach the Handlebar Cover (No. 6) to the Handlebar (No.5) as shown above in Figure II.
Attach the Computer (No. 1) to the bracket located on the Handlebar Post (No. 11).as
shown above in Figure III
.Connect the link wire of the Computer (No. 1) to the Inductor (No. 18).
The assembly is now complete!

EXERCISE COMPUTER
SPECIFICATIONS:
TIME------------------------------------------- 00:00-99:59 MIN:SEC
SPEED---------------------------------------- 0.0-999.9 MPH
DISTANCE----------------------------------- 0.00-99.99 MI
CALORIES----------------------------------- 0.0-999.9 KCAL
FUNCTION KEY:
MODE: Press to select function (Time, Speed, Distance, Calories)
OPERATION PROCEDURES:
1. AUTO ON/OFF: Start pedaling or press the MODE button. The computer will
turn on and stay on while the machine is in use. After approximately 4 minutes of
inactivity, the monitor will turn off automatically.
2. MODE: Press the MODE button to select the function you want. During SCAN,
press the MODE button when the pointer is on the function you want to select.
Only the selected function will be displayed.
FUNCTIONS:
TIME: Counts the total time of an exercise session from start to finish.
SPEED: Displays the current speed.
DISTANCE: Counts the total distance of an exercise session from start to finish.
CALORIES: Counts the total amount of calories burned during an exercise session
from start to finish.
SCAN: Automatically displays functions in the following order shown: time, speed,
distance, calories (repeat).
Battery: This monitor uses two AA batteries. If the display is not working, try
replacing the batteries.
11

ADJUSTMENTS & USAGE GUIDE
ADJUSTING THE BALANCE
In order to achieve a smooth and comfortable ride, you must ensure that the stability of the
bike is secured. If you notice that the bike is unbalanced during use, you should adjust the
foot levelers located beneath the front and rear stabilizers. To do so, simply rotate the End
Cap (No. 28)located on the Rear Stabilizer (No. 29) until the bike becomes level with the
floor surface.
ADJUSTING THE TENSION & EMERGENCY STOP
Adjust the tension by rotating the Tension Knob (No. 51) clockwise to increase the level of
resistance. Rotate the knob counter-clockwise to decrease the level of resistance. Push
down on Tension Knob (No. 51) to enforce the brake and stop the bike immediately.

ADJUSTING THE HEIGHT
Loosen and pull out the [seat height] Adjustment Knob (No. 13)to adjust the height of the
saddle. You may also slide the seat forward or backwards by loosening and pulling out the
[seat] Adjustment Knob (No. 13)on the Seat Slider (No. 16). You may adjust the height of
the handlebar by using the [handlebar] Adjustment Knob (No. 13). When making
adjustments, you will see a limit on the saddle post, seat slider and handlebar post. Do
NOT lift the posts passed this mark. Always check the Adjustment Knobs (No. 13)to
ensure that they are fully secure when you finish making an adjustment.
MOVING THE BIKE
To move the bike, first ensure that the handlebar is properly secured. If the handlebar is
loose, tighten the Adjustment Knob (No. 13)to secure it. Next, stand at the front of the
bike so that you’re directly in front of the handlebar. Firmly grasp and hold each side of the
handlebar, place one foot on the front stabilizer and tilt the bike towards you until the
transportation wheels on the front stabilizer touch the ground. With the wheels on the
ground, you can transport the bike to the desired location with ease.
ADJUSTING THE ANGLE OF SEAT
Use Spanner (No. 91)to unscrew the nut under the saddle. Adjust the saddle to the
desired angle and reinstall the nut. Check the nut periodically to ensure that it is tight and
secure. Use the Spanner (No. 91)to tighten when necessary.