BELT DRIVE
INDOOR CYCLING BIKE
SF-B1421B
USER MANUAL
IMPORTANT! Please retain owner’s manual for maintenance and adjustment instructions. Your
satisfaction is very important to us, PLEASE DO NOT RETURN UNTIL YOU HAVE
CONTACTED US: [email protected] or 1- 877 - 90SUNNY (877-907-8669).
1
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 achieved 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
medication that affects 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 (60 CM) 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. 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, discontinue use of the equipment immediately and do not use until the problem has
been rectified.
7. Wear suitable clothing while using the equipment. Avoid wearing loose clothing that may
become entangled in the equipment.
8. Do not place fingers or objects into the moving parts of the equipment.
9. The maximum weight capacity of this unit is 265 pounds (120 KG).
10. The equipment is not suitable for therapeutic use.
11. To avoid bodily injury and/or damage to the product or property, proper lifting and moving are
required.
12. Your product is intended for use in cool and dry conditions. You should avoid storage in extreme
cold, hot or damp areas as this may lead to corrosion and other related problems.
13. This equipment is designed for indoor and home use only; it is not intended for commercial use.
2
EXPLODED DIAGRAM 1
3
EXPLODED DIAGRAM 2
4
PARTS LIST
No.
Description
Spec.
Qty.
No.
Description
Spec.
Qty.
1
Computer
1
45
Round Magnet
Φ10*4 3500±200
1
2
Foam Grip
Φ23*3*480
2
46
Front Cover
1
3
End Cap
Φ25*16
4
47
Flywheel
13*Φ450
1
4
Foam Grip
Φ23*3*190
2
48
Screw
M10*15*S6
4
5
Handlebar
1
49
Washer
d6*Φ16*1.5
2
6
Handlebar Cover
125*80*42
1
50
Inertia Axle
Φ12*150*M12*1.0
1
7
Washer
d8*Φ16*1.5
6
51
Tension Knob
M10*Φ58*48
1
8
Screw
M8*16*S6
8
52
Nut
M10*H5.5*S17
2
9
Spring Washer
d8
4
53
Brake Rod
Φ10*200*M10*15*M
6*7*M10*95
1
10
Screw
M5*10*S4
1
54
Spanner
S10-13-17-19
1
11
Handlebar Post
1
55
Spring
Φ2.0*Φ15*54*N12
1
12
Bushing
F38*38*F30*30*L
120
3
56
Nut
16*16*25*M10
1
13
Adjustment Knob
M16*1.5*18*Φ58
3
57
Spacer
Φ18*Φ12.2*10
1
14
Seat Post
1
58
Nut
M6*H6*S10
1
15
End Cap
F30*30*16
1
59
Washer
d6*Φ12*1.2
2
16
Seat Slider
1
60
Screw
M6*12*Φ12
2
17
Seat
1
61
Wool Felt
110*30*8
1
18
Inductor
1
62
Brake Board
110*27*30
1
19
Water Bottle Holder
1
63
Spring
Φ2*Φ24*Φ13*15*N5
1
20
Washer
d5*Φ10*1
2
64
Brake Stopper
35*24*2
1
21
Screw
M5*16*Φ10
2
65
Washer
d5*Φ10*1
2
22
Nut
M8*H7.5*S13
2
66
Nut
M5*H5.5*S10
2
23
Bolt
M8*40*20*S14
2
67
Screw
M5*30*Φ8
2
24
Transportation
Wheel
Φ40.5*Φ8.5*22
2
68
Bolt
M6*12*S10
2
25
End Cap
Φ60
2
69
Brake Spring
Board
t1.2*23*122
1
26
Front Stabilizer
1
70
Crank Cap
Φ25*7
2
27
Arc Washer
d8*Φ20*2*R30
4
71
Nut
M10*1.25*H7.5*S14
2
28
End Cap
Φ60*45.5
2
72L/R
Left & Right Crank
170
2
29
Rear Stabilizer
1
73
Middle Axle Cover
Φ50*Φ32*33
1
30
Bushing
20*20*62
1
74
C Clip
d17
2
31
Main Frame
1
75
Bearing
6203-2RS
2
32
Allen Wrench
S6
1
76
Wave Washer
d17*Φ22*0.3
1
33
Spanner
S13-14-15
1
77
Middle Axle
Φ17*176
1
34
Nut
M12*1*H19.5*S19
2
78
Belt Wheel
Φ204*20*5PK
1
35
Nut
M6*H6*S10
2
79
Inner Chain Cover
1
36
Nut
M6*H5*S10
2
80
Belt
5PK510
1
37
Adjusting Screw
M6*50*Φ12*5
2
81
Outer Chain
Cover
1
38
Spacer
Φ18*Φ12.2*6
2
82
Screw
ST4.8*16*Φ10
2
39
Nut
M12*1*H6*S19
3
83
Blanking Plate
1
40
End Cap
Φ22*16
2
84
Screw
ST4.2*16*Φ8
13
41
Washer
Φ30*Φ10*6
1
85L/R
Pedal
2
42
Bearing
6001-2RS
2
86
Left Nylon Nut
9/16*20*H8*S19
1
43
Screw
ST4.8*13*Φ8
6
87
Right Nylon Nut
9/16*20*H8*S19
1
44
Flywheel Cover
2
5
HARDWARE PACKAGE
Ordering Replacement Parts (U.S. and Canadian Customers only)
Please provide the following information in order for us to accurately identify the part(s) needed:
✓ The model number (found on cover of manual)
✓ The product name (found on cover of manual)
✓ The part number found on the “EXPLODED DIAGRAM” and “PARTS LIST” (found near the
front of the manual)
6
ASSEMBLY INSTRUCTIONS
We value your experience using Sunny Health and Fitness products. For assistance with parts or
troubleshooting, please contact us at support@sunnyhealthfitness.com or 1-877-90SUNNY
(877-907-8669)
26
8
27
8
27
29
27
8
31
S6
#27 d8*Φ20*2*R30 4PCS
#8 M8*16*S6 4PCS
16
17
13
13
14
#13 M16*1.5*18*Φ58 2PCS
#33
#32
S15
27
8
85L
85R
31
19
20
21
72L
72R
S15
#20 D5*Φ10*1 2PCS
#21 M5*16*Φ10 2PCS
#33
87
86
S19
#54
20
21
#86 9/16*20*H8*S19 1PC
#87 9/16*20*H8*S19 1PC
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 Seat (No. 17) to the Seat Slider (No. 16),
tighten and secure with Spanner (No. 33).
Loosen and pull out the Adjustment Knob (No. 13).
Adjust the Seat Slider (No. 16) and Seat Post (No.
14) to the desired position and reinsert and tighten
Adjustment Knob (No. 13) to secure the posts in
place.
STEP 2:
WARNING! Read instructions carefully as improper
assembly may cause permanent damage to your bike.
(Before you begin, immobilize the cranks by turning
the tension knob all the way to the right).
Remove 2 Left and Right Nylon Nuts (No. 86 and
No. 87) located on Left & Right Pedals (No. 85L &
No. 85R). Attach Left Pedal (No. 85L)
counter-clockwise into its corresponding Left Crank
(No. 72L). Once screwed in place, use Spanner (No.
33) to hold the bolt of the pedal then attach Left Nylon
Nut (No. 86) clockwise onto the thread end of the Left
Pedal (No. 85L). Secure with Spanner (No. 54).
Attach Right Pedal (No. 85R) clockwise into its
corresponding Right Crank (No. 72R). Once screwed
in place, use Spanner (No. 33) to hold the bolt of the
pedal then attach Right Nylon Nut (No. 87)
counter-clockwise onto the thread end of the Right
Pedal (No. 85R). Secure with Spanner (No. 54).
Remove pre-assembled 2 Screws (No. 21) and 2
Washers (No. 20) from Main Frame (No. 31) with
Spanner (No. 33). Then attach Water Bottle Holder
(No. 19) onto Main Frame (No. 31) using 2 Screws
(No. 21) and 2 Washers (No. 20) that were removed.
Tighten and secure with Spanner (No. 33).
7
We value your experience using Sunny Health and Fitness products. For assistance with parts or
troubleshooting, please contact us at support@sunnyhealthfitness.com or 1-877-90SUNNY
(877-907-8669)
11
5
18
1
6
1
6
I
1
6
II
III
18
1
5
STEP 3:
Loosen and pull out the 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,
re-insert and tighten the Adjustment Knob (No. 13) to
secure the post in place.
Secure Handlebar (No. 5) to Handlebar Post (No. 11)
using 4 Screws (No. 8), 4 Washers (No. 7) and 4
Spring Washers (No. 9). Tighten and secure with
Allen Wrench (No. 32).
STEP 4:
Insert the link wire of the Computer (No. 1) to the
middle hole of the Handlebar Cover (No. 6) as shown
in Figure I.
Attach the Handlebar Cover (No. 6) to the Handlebar
(No. 5) as shown in Figure II.
Attach the Computer (No. 1) to the bracket located on
the Handlebar Post (No. 11), as shown in Figure III.
Connect the link wire of the Computer (No. 1) to the
link wire of Inductor (No. 18).
The assembly is complete!
8
ADJUSTMENTS & USAGE GUIDE
11
13
I
II
13
13
13
13
16
16
ADJUSTING THE HEIGHT
Loosen and pull out the [seat height] Adjustment Knob (No. 13) to
adjust the height of the seat. 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
adjusting, you will see a limit on the seat 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.
S14
ADJUSTING THE ANGLE OF SEAT
Use Spanner (No. 33) to unscrew the nut under the seat. Adjust the
seat to the desired angle and re-install and secure the nut. Check the
nut periodically to ensure that it is tight and secure. Use the Spanner
(No. 33) to tighten when necessary.
Note: In order to properly tighten the seat, it is important to note that
you will need two Spanner (No. 33) (1 for each side) and will need to
tighten the nut on each side simultaneously working in opposite
direction of each other.
13
5
26
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 (No. 5), place one foot on the Front Stabilizer (No. 26) and
tilt the bike towards you until the transportation wheels on the Front
Stabilizer (No. 26) touch the ground. With the wheels on the ground,
you can transport the bike to the desired location with ease.
28
29
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 end caps located on the
rear stabilizer. 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.
51
ADJUSTING THE TENSION & EMERGENCY STOP
Adjust the tension by rotating the Tension Knob (No. 51) clockwise to
increase the level of resistance. Rotate the Tension Knob (No. 51)
counter-clockwise to decrease the level of resistance. Push down on
Tension Knob (No. 51) to enforce the brake and stop the bike
immediately.
9
EXERCISE COMPUTER
SPECIFICATIONS:
TIME------------------------------------------- 00:00-99:59 MIN:SEC
SPEED---------------------------------------- 0.0-999.9 MI(Mile)/H
DISTANCE----------------------------------- 0.00-99.99 MI(Mile)
CALORIES----------------------------------- 0.0-999.9 KCAL
FUNCTION KEY:
MODE: Press MODE repeatedly to select the desired display value (Time, Speed, Distance,
Calories, Scan).
CLEAR: To reset a single value, press CLEAR once. To reset all values, press and hold CLEAR
for 3 seconds. This function is only available when the bike is stopped, and the computer
is not in SCAN mode.
OPERATION PROCEDURES:
1. AUTO ON/OFF: If the machine is put into motion or the MODE button is pressed, the computer
will activate and will remain active unless there is no movement for approximately 4 minutes. The
computer power will turn off automatically if inactivate for approximately 4 minutes.
2. LOCK VALUE SETTING: Press the MODE when the indicator arrow is on the chosen value
(Time, Speed, Distance, Calories, Scan) and then release. Once locked, only the selected
function will be displayed.
FUNCTIONS:
TIME: Counts the total time of an exercise from start to finish.
SPEED: Displays the current speed being obtained.
DISTANCE: Counts the total distance of an exercise 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 computer uses two AA batteries. If the display appears incorrectly or becomes
difficult to read, please install new batteries. Always change both batteries at the same time. Do
not mix battery types and do not mix old and new batteries. Dispose batteries according to your
state and regional guidelines.
10
MAINTENANCE INSTRUCTIONS
This is general information for daily, weekly and monthly maintenance to be performed on your bike.
DAILY MAINTENANCE
After each exercise session, wipe down all the
equipment: seat, frame, and handlebars. Pay
special attention to the seat post, handlebar
post, and belt/chain guard. Sweat is very
corrosive and may cause problems that require
parts replacement later.
1. Get on the bike and engage the drive train.
2. Pay attention to any vibrations felt through
the pedals. If you feel any vibrations, you
may need to tighten the pedals, bottom
bracket, or adjust the drive belt/chain
tension.
3. Use a wrench to tighten the pedals until they
are secure.
MONTHLY MAINTENANCE
1. Check if all hardware is secure, such as:
water bottle holder, flywheel nuts, belt/chain
guard bolts, brake caliper lock nuts, and
brake caliper tension rod nuts.
2. Inspect the brake tension rod for signs of
wear such as missing threads. Clean and
lubricate the brake tension rod.
3. Clean and lubricate the seat post, handlebar
post and seat slider. Remove any buildup of
foreign material.
WEEKLY MAINTENANCE
1. Inspect moving parts and tighten the
hardware.
2. Inspect pull pin frame fittings to make sure
the fittings are snug. Loose frame fittings
may strip out threads over time and cause
extensive damage.
3. Clean and lubricate pop pin assemblies. Pull
on the pin and spray a small amount of
lubricant onto the shaft.
4. Tighten the seat hardware to make sure the
seat is level and centered.
5. Brush and treat the resistance pads.
Remove any foreign material that may have
collected on the pads. Spray the pads with
silicone lubricant. This helps to reduce noise
from friction between the pads and the
flywheel.
6. Visually inspect the bottom bracket, toe clips
and toe straps. If any of them are loose or
disconnected, attach and tighten.
LEATHER BRAKE PAD CARE (If Applicable)
1. Perform this maintenance when the brake
pad is first installed and for the life of the
brake pad. Following these simple guidelines
can increase the life of your brake pads.
2. Some brake pad assemblies are
pre-lubricated. Squeeze the brake pad. If
lubricant is released, then the pad has been
pre-lubricated.
3. If the brake pad is dry, then coat the brake
pad with 3-n-1 oil. Brush the leather with a
clean, wire bristle brush, and then apply the
oil. The oil should be allowed to soak in to
the pad. Repeat 4-5 times until the pad is
saturated, but not dripping with oil. When the
pad is saturated, it will no longer absorb oil.
4. Inspect the brake pad weekly and lubricate if
needed. The pad should not have a glazed
appearance. If the pad appears glazed, then
brush it with wire brush and apply lubricant
as needed. If any of the sponge padding is
showing through the leather pad, the brake
pad should be replaced.
Version：2.3
