Sunny Health & Fitness SF-B1918 User manual

INDOOR CYCLING BIKE WITH
MAGNETIC RESISTANCE
SF-B1918
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 220 pounds (100 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
HARDWARE PACKAGE
#54 6＃(86X35) 1pc
#80 δ3 (151X43.5) 1pc
#81 S=13,14,15 1pc

3
PARTS LIST
No.
Description
Spec.
QTY.
No.
Description
Spec.
QTY.
1
Main Frame
1
30
Spacer
Ф25*Ф20.05*11.5
1
2
Rear Stabilizer
1
31
Fixing Nut
Ф28*M20*1
1
3
Seat Post
1
32
Middle Axle
Cover
Ф56*28
1
4
Front Post
1
33
Lock Nut
GB/T 889.1-2000
M10
5
5
Handlebar
1
34
Lock Nut
GB/T 889.1-2000 M8
1
6
Seat Slider
1
35
Nut
20*20*t8(M10)
1
7
Adjustment Knob
Ф58*33 (M10)
1
36
Spring
Φ2.0*52
1
8
Flat Washer
Ф19*Ф9*t2
3
37
Square Plastic
20.6*20.6*16
2
9
Adjustment Knob
Ф38*66 M16*1.5
1
38
Plastic plug
25*25*27
1
10
Seat
PVC98-2
1
39
Tension Control
Knob
M10*100
1
11
Bracket
LTF8163
1
40
Magnet Holder
1
12
Plastic Plug
Ф14*14
4
41
Brake Rod
1
13
Tablet Bracket
100*60/δ5
1
42
Bushing
Ф16*Ф12.1*30
1
14
Bushing
PP
1
43
Bolt
GB/T 70.1-2000
M6*30
1
15
Foot Pad
Ф38*43
5
44
Flat Washer
GB/T 95-2002 Ф6
1
16
End Cap
4
45
Lock Nut
GB/T 889.1-2000 M6
1
17
Lock Nut
GB/T 889.1-2000 M8
3
46
Connecting Rod
16*16*47
(M10x1.0)
1
18
Limit Block
1
47
Spring
Ф15.5*Ф1.5*15
1
19
Metal Plate
δ2.5
2
48
Hexagon Nut
GB/T 6173-2000
M10*1.0
1
20
Hexagon Nut
M12*1.25
1
49
Computer
TZ-4117
1
21
Screw
ST2.9*9.5
4
50
Arc Washer
Ф8
2
22
Belt
5PK 53in
1
51
Spring Washer
GB/T 859-1987 Ф8
9
23
Bolt
M8*10
2
52
Bolt
GB/T 70.2-2000
M8*15
8
24
Flat Washer
GB/T 95-2002 Ф8
11
53
Transportation
Wheel
Ф23*32
2
25
Dome Nut
GB/T 802-1988
M12*1.25
2
54
Allen Wrench
6#(86*35)
1
26
Hexagon Nut
GB/T 41-2000 M8
1
55
Bolt
GB/T 5780-2000
M6*45
2
27
Bolt
GB/T 70.1-2000
M8*45
1
56
Front Stabilizer
1
28
Bearing
6004ZZ
2
57
Bolt
GB/T 70.2-2000
M8*40
4
29
Spacer
Ф25*Ф20.5*41.1
1
58
Cap
PP
2

4
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)
Please contact us at [email protected] or 1- 877 - 90SUNNY (877-907-8669).
No.
Description
Spec
QTY.
No.
Description
Spec.
QTY.
59
Cap
Ф22*12
2
78
Foam Grip
Ф23*Ф29*465
2
60
Lock Nut
GB/T 889.1-2000
M6
2
79
End Cap
2
61
Outer Belt Cover
655*268*43
1
80
Universal Wrench
δ3(151*43.5)
1
62
Inner Belt Cover
467*266*11
1
81
Crosshead
Spanner
S=13,14,15
1
63
Screw
GB/T 845-1985
ST4.2*19
5
82
Screw
GB/845-85
ST4.2*9.5
2
64
Screw
GB/T 845-1985
ST4.8*13
2
83
Flat Washer
GB/T 95-2002 Ф5
2
65
Screw
GB/T15856.1-2002
ST4.2*16
1
84
Right Nylon Nut
9/16"
1
66
Middle Axle
Ф20*168
1
85
Left Nylon Nut
9/16"-LH
1
67
Belt Wheel
Ф200*24
1
86
Right Crank
1
68
Hex Flange Nut
GB/T 6177.2-2000
M10*1.25
2
87
Left Crank
1
69
Crank Cap
Ф23*7.5
2
88L/
R
Pedal
9/16"
2
70
Bolt
GB/T 70.3-2000
M8*18
4
89
Magnet
C-02Z
1
71
Flat Washer
Ф14*Ф6*t2.5
1
90
Magnet
30*15*10
7
72
Bearing
6001ZZ
2
91
Hexagon Nut
GB/T 41-2000 M8
5
73
Flywheel Spindle
Ф16*Ф12*156
1
92
Sensor Wire
L=600
1
74
Flywheel
1
93
Sensor Wire
L=600
1
75
Idle Pulley Bracket
1
94
Bushing
Ф16*Ф12.1*55.1
1
76
Idle Pulley
Φ43*Φ34*24
1
95
Screw
GB/T 5780-2000
M5*14
2
77
Bolt
GB/T 70.1-2000
M6*10
1

5
ASSEMBLY INSTRUCTIONS
We value your experience using Sunny Health and Fitness products. For assistance with parts or
troubleshooting, please contact us at [email protected] or 1- 877 - 90SUNNY (877-
907-8669).
STEP 1:
Remove 4 Flat Washers (No. 24) and 4 Bolts (No.
57)from Front Stabilizer (No. 56) and Rear
Stabilizer (No. 2) with Allen Wrench (No. 54).
Attach the Front Stabilizer (No. 56)and Rear
Stabilizer (No. 2) to the Main Frame (No. 1) using
4 Flat Washers (No. 24) and 4 Bolts (No. 57) that
were removed. Tighten and secure with Allen
Wrench (No. 54).
STEP 2:
Loosen and pull out the Adjustment Knob (No.
9) and insert the Seat Post (No. 3) into the seat
post tube of the Main Frame (No. 1). Then, select
the desired height. Release the knob and re-
tighten the knob.
Remove Adjustment Knob (No. 7) from Seat
Slider (No. 6) by hand. Then attach Seat Slider
(No. 6) onto Seat Post (No. 3). Reattach
Adjustment Knob (No. 7) that was removed,
then tighten it to secure the Seat Slider (No. 6)
Remove 3 Lock Nuts (No. 17) and 3 Flat
Washers (No. 8) from the back of Seat (No. 10)
with Crosshead Spanner (No. 81).
Attach the Seat (No. 10)onto Seat Slider (No. 6)
with 3 Lock Nuts (No. 17)and 3 Flat Washers
(No. 8) that were removed. Tighten and secure
with Crosshead Spanner (No. 81).
#57 M8*40 4pcs
#24 GB/T 95-2002 φ8 4pcs
#54 6＃(86X35) 1pc
#7 φ58*33(M10) 1pc
#81 S=13,14,15 1pc
#17 GB/T 889.1-2000 M8 3pcs
#8 φ19*φ9*t2 3pcs
#52 GB/T 70.2-2000 M8*15 8pcs
#24 GB/T 95-2002 φ8 6pcs
#54 6＃(86X35) 1pc
#51 GB/T 859-1987 φ8 4pcs
#50 φ8 2pcs #80 δ3 (151X43.5) 1pc
#81 S=13,14,15 1pc
#57 M8*40 4pcs
#24 GB/T 95-2002 φ8 4pcs
#54 6＃(86X35) 1pc
#7 φ58*33(M10) 1pc
#81 S=13,14,15 1pc
#17 GB/T 889.1-2000 M8 3pcs
#8 φ19*φ9*t2 3pcs
#52 GB/T 70.2-2000 M8*15 8pcs
#24 GB/T 95-2002 φ8 6pcs
#54 6＃(86X35) 1pc
#51 GB/T 859-1987 φ8 4pcs
#50 φ8 2pcs #80 δ3 (151X43.5) 1pc
#81 S=13,14,15 1pc

6
We value your experience using Sunny Health and Fitness products. For assistance with parts or
troubleshooting, please contact us at [email protected] or 1- 877 - 90SUNNY (877-
907-8669).
STEP 3:
Connect the bottom end of Sensor Wire (No. 92)
and Sensor Wire (No. 93).
Remove 4 Bolts (No. 52), 2 Arc Washers (No.
50)and 2 Flat Washers (No. 24) from the bottom
end of Front Post (No. 4) using Allen Wrench
(No. 54).
Then, attach Front Post (No. 4) to Main Frame
(No. 1) with 4 Bolts (No. 52), 2 Arc Washers
(No. 50), and 2 Flat Washers (No. 24) that were
removed. Tighten and secure using Allen
Wrench (No. 54).
Remove 4 Bolts (No. 52), 4 Spring Washers
(No. 51), and 4 Flat Washers (No. 24) from the
top end of Front Post (No. 4) using Allen
Wrench (No. 54).
Attach Handlebar (No. 5), Tablet Bracket (No.
13)
onto Front Post (No. 4) with 4 Bolts (No. 52), 4
Spring Washers (No. 51)and 4 Flat Washers
(No. 24) that were removed. Tighten and secure
using Allen Wrench (No. 54).
Attach Computer (No. 49) onto Handlebar (No.
5), then connect the link wire of Computer (No.
49) and Sensor Wire (No. 92).
#52 GB/T 70.2-2000 M8*15 8pcs
#24 GB/T 95-2002 φ8 6pcs
#54 6＃(86X35) 1pc
#51 GB/T 859-1987 φ8 4pcs
#50 φ8 2pcs

7
We value your experience using Sunny Health and Fitness products. For assistance with parts or
troubleshooting, please contact us at [email protected] or 1- 877 - 90SUNNY (877-
907-8669).
STEP 4:
Note: The Pedals (No. 88L & No. 88R) are marked
"L" and "R" for Left and Right.
WARNING! Read instructions carefully as
improper assembly may cause permanent damage
to your bike.
Remove the 2 Right & Left Nylon Nuts (No. 84 &
No. 85)located on the Pedals (No. 88R & No. 88L)
with Universal Wrench (No. 80).
Turn the Tension Control Knob (No. 39)
clockwise as tightly as you can with your hand.
Align the Left Pedal (No. 88L) with the Left Crank
(No. 87) at 90°. Turn the pedal bolt on Left Pedal
(No. 88L) counter-clockwise as tightly as you can
with your hand. Then, use Crosshead Spanner
(No. 81) to tighten and secure.
Turn the Left Nylon Nut (No. 85) clockwise as
tightly as you can with your hand. Use Crosshead
Spanner (No. 81) to hold the pedal bolt on Left
Pedal (No. 88L) and use Universal Wrench (No.
80) to turn the Left Nylon Nut (No. 85) clockwise
at the same time, until it is tightened onto the Left
Crank (No. 87).
Align the Right Pedal (No. 88R) with the Right
Crank (No. 86) at 90°. Turn the pedal bolt on Right
Pedal (No. 88R) clockwise as tightly as you can
with your hand. Then, use Crosshead Spanner
(No. 81) to tighten and secure.
Turn the Right Nylon Nut (No. 84) counter-
clockwise as tightly as you can with your hand. Use
Crosshead Spanner (No. 81) to hold pedal bolt on
Right Pedal (No. 88R) and use Universal Wrench
(No. 80) to turn the Right Nylon Nut (No. 84)
counter-clockwise until it is tightened onto the
Right Crank (No. 86).
The assembly is complete!
#80 δ3 (151X43.5) 1pc
#81 S=13,14,15 1pc
#85 9/16"-LH 1pc
#84 9/16" 1pc
39

8
BATTERY INSTALLATION AND REPLACEMENT
54
Battery Cover
Battery
Battery
BATTERY INSTALLATION:
1. Take out 2 AAA batteries from computer box.
2. Press the buckle of battery cover on the back of the Computer (No. 49), then remove battery
cover.
3. Install 2 AAA batteries into the battery case on the back of the Computer (No. 49). Pay attention
to the battery + and –ends before installing.
4. Press the buckle of battery cover, then put the battery cover back to the back of the Computer
(No. 49).
The installation is complete!
BATTERY REPLACEMENT:
1. Press the buckle of battery cover on the back of the Computer (No. 49), then remove battery
cover.
2. Remove the 2 old AAAbatteries in the battery case and install 2new AAA batteries into thebattery
case on the back of the Computer (No. 49). Pay attention to the battery + and –ends before
installing.
3. Press the buckle of battery cover, then put the battery cover back to the back of the Computer
(No. 49).
The replacement is complete!
NOTE: Always change both batteries at the same time. Do not mix battery types and do not mix old
and new batteries. Dispose of batteries according to your state and regional guidelines.
49

9
ADJUSTMENTS 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, you should adjust the foot pads located beneath the front
and rear stabilizers. To do so, simply rotate the Foot Pad (No. 15)
until the bike becomes level with the floor surface. To raise the foot
pad, turn it counter-clockwise; to lower the foot pad, turn it clockwise.
When you have finished adjusting the foot pad, re-tighten the
Hexagon Nut (No. 91) by turning it counter-clockwise using
Crosshead Spanner (No. 81). If required, repeat this process to
adjust the remaining foot pads.
ADJUSTING THE SEAT
The seat of this bike is fully adjustable as it moves Up, Down, Fore
(forward), Aft (backward).
To adjust the height of the seat post, loosen and pull Adjustment
Knob (No. 9) outward, then raise or lower the seat to the desired
height. Once adjusted, re-insert and tighten the Adjustment Knob
(No. 9) to secure the seat in place.
To adjust the seat back and forth, loosen Adjustment Knob (No. 7),
then slide the seat slider to the desired position. Once positioned,
tighten the Adjustment Knob (No. 7) to secure the seat slider in
place.
ADJUSTING THE TENSION & EMERGENCY STOP
Adjust the tension by rotating the Tension Control Knob (No. 39)
clockwise to increase the resistance. Rotate the Tension Control
Knob (No. 39) counter-clockwise to decrease the resistance.
Push down the Tension Control Knob (No. 39)to enforce brake and
stop the bike immediately.
TRANSPORTING THE BIKE
To move the bike, first 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.
56)and tilt the bike towards you until the transportation wheels on the
Front Stabilizer (No. 56)touch the ground. With the wheels on the
ground, you can transport the bike to the desired location with ease.
NOTE: When moving the bike, always move with caution as
unexpected impact, such as dropping the bike, may cause injury and
affect the bike’s operation.