Sunny SF-B2721 User manual

COMFORT XL FOLDING
RECUMBENT BIKE
SF-B2721
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]

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 300 pounds (136 KG).
10.The equipment is not suitable for therapeutic use.
11.Use caution when lifting and moving the equipment. Always use proper lifting technique and seek
assistance if necessary.
12.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.
13.This equipment is designed for indoor and home use only! It is not intended for commercial use!
WARNING: This product can expose you to one or more chemicals known to the State of
California to cause cancer and birth defects or reproductive harm. For more information
go to www.P65Warnings.ca.gov.

2
EXPLODED DIAGRAM

3
PARTS LIST
NO. Description Spec. QTY NO. Description Spec. QTY
1 Meter 1 33 Cap 1
2 Handle Bar 1 34 Tube 1
3 Sponge 2 35 Bushing 1
4 Bolt M5 2 36 Label 1
5 Bolt M8 2 37 Tube 1
6 Bolt M4 2 38 Sleeve 2
7 Pulse 2 39 Sensor 1
8 Washer M8 6 40 Bolt M8 4
9 Tension 1 41 Plastic Washer 1
10 Washer 1 42 Bolt M4 8
11 Screw M5 1 43 Rod 1
12 Seat 1 44 Bushing 6
13 Seat Tube 1 45 Bolt M8 1
14 Bushing 1 46 Cover-R 1
15 Washer 7 47 Front Cover 1
16 Bolt M8 7 48 Cover-L 1
17 Back Pad 1 49 Seat Connect Tube 1
18 Cap 1 50 Wire 1
19 Bolt M8 3 51 Cap Nut 4
20 Bolt M5 2 52 Rear End Cap 2
21 Cup Holder 1 53 Main Frame 1
22 Back Pad Tube 1 54 Spacer 1
23 Bolt M8 2 55 Cap 2
24 Washer 2 56 Nut M10 2
25 Nut M8 4 57L/R Crank-L&R 2
26 Sponge 2 58L/R Pedal-L&R 2
27 Seat Handle Bar 1 59 Bolt M6 11
28 Cap 2 60 Mounting Plate 2
29
Handlebar Bracket
1 61 Reed 6
30 Bolt M8 2 62 Bearing 6003 2
31 Cap 2 63 Bearing Seat 2
32 Pop-Pin Knob 2 64 Pulley 1

4
PARTS LIST
NO. Description Spec. QTY NO. Description Spec. QTY
65 Middle Axle 1
80 Clamp 1
66 Wheel 1
81 Bearing 6000 2
67 Washer 1
82 Belt Wheel 1
68 Nut M10 1
83 Belt 230J3 1
69 Washer 2
84 Axle 1
70 Spacer 1
85 Magnet Spacing 1
71 Washer 1
86 Bolt M4 1
72 Plastic Idler 1
87 Spring 1
73 Belt 240J3 1
88 Iron Sheet 1
74 Reed 1
89 Magnet 4
75 Nut M10 1
90 Front Tube 1
76 Nut M10 2
91 Rear Tube 1
77 Bolt 2
92
93
94
F
Washer
Jump Ring
ront End Cap 2
78 Iron Sheet 2
A Wrench 1
1
1
79 Nut M6 2
B Spanner 1
HARDWARE PACKAGE
#16 3pcs
A
#15 3pcs
#19 2pcs
# 20 2pcs
# 5 2pcs
# 8 2pcs
B

5
ASSEMBLY INSTRUCTIONS
STEP 1:
Slightly loosen the Pop-Pin Knob (No. 32) and pull
outward to adjust your desired recline angle (1-3
setting).
STEP 2:
Remove the Cap Nuts (No. 51) and
Washers (No. 8)
from the Front Tube (No. 90) and Rear Tube (No. 91).
Install Front Tube (No. 90) and
Rear Tube (No. 91)
onto Main Frame (No. 53) (please see image to
ensure the both tubes are installed on correct position).
Insert Bolts (No. 40) through hole in Front Tube
(No. 90) and Rear Tube (No. 91) and place the
Washers (No. 8) onto Bolts (No. 40). Then, tighten
Cap Nuts (No.51) onto Bolts (No. 40) with
Spanner (B).
STEP 3:
Attach Seat (No. 12) to the Seat Support Tube
(No. 13)
(No. 16) tighten and secure
using 3 Washers (No. 15) and 3 Bolts
with Wrench (A).
32
16
15
13
12
# 15 3pcs
A
# 16 M8 3pcs
51
51
53
8
8
40
91
#8 M8 4pcs
#40 M8 4pcs
#51 4pcs
B
40
90
8
8
51
53
51

6
STEP 4:
Loosen Pop-Pin Knob (No. 32), and insert the
Seat Support Tube (No. 13) into Main Frame
(No. 53). Secure the Pop-Pin Knob (No. 32) after
adjusted to your desired height.
STEP 5:
R
Remove the Handlebar Bracket (No. 29) from
the Seat Handle Bar (No. 27).
emove preassembled Bolts (No. 23),Nuts (No.
25), and Washers (No. 24) from the Back Pad
Tube (No. 22). Align Back Pad Tube (No. 22) with
hole in the Seat Support Tube (No. 13), and
insert Bolts (No. 23) through hole in Back Pad
Tube (No. 22). Place Washers (No. 24) onto the
Bolts (No. 23), and screw on the Nuts (No. 25)
and tighten with Spanner (B).
STEP 6:
Align the Seat Handle Bar (No. 27) with holes on
the bottom of the Back Pad Tube (No. 22), and
place Bolts (No. 30) into holes and tighten with
Wrench (A).
STEP 7:
Align Back Pad (No. 17) against Back Pad Tube (No.
22), and insert Bolts (No. 19) into holes. Then, tighten
with Wrench (A).
#23 M8 2pcs
#24 2pcs
#25 M8 2pcs
B
#30 M8 2pcs
A
#19 M8 2pcs
A
13
32
53
22
19
19
17
22
22
23
24
25
13
27
29
30
A
27

7
STEP 8:
Align
Cup Holder (No. 21) against Back Pad Tube (No. 22),
and
insert Bolts (No. 20)
into holes. Then, tighten with
Wrench (A).
STEP 9:
Remove preassembled Bolts (No. 5) and Washers (No. 8) from
Handle Bar (No. 2), and feed Handle Bar (No. 2) into slots on
the top of the Main Frame (No. 53). Then, place Bolts (No. 5)
into holes and tighten with Wrench (A).
STEP 10:
Remove preassembled Bolts (No. 4) from the back of the Meter
(No. 1), and place Meter (No. 1) onto the Handle Bar (No. 2).
Then, tighten with Wrench (A).
STEP 11:
Connect each of three wires from bike to Meter (No. 1). Either of
the 2 small female connectors (square) can connect to either of
the 2 small male connectors. The largest female connector
(round) must connect to the largest male connector.
#4 M5 2pcs
A
A
#5 M8 2pcs
#8 2pcs
A
#20 M5 2pcs
2
4
1
5
8
22
21
20
2

8
STEP 12:
Attach the Left and Right Pedals (No. 58L/R) to the
Left and Right Cranks (No. 57L/R).
Left Pedal: align the Left Pedal (No. 58L) with the
Left Crank Arm (No. 57L) at 90 degrees. Insert pedal
into crank arm, then turn pedal counter-clockwise as
tightly as you can by hand. Tighten and secure with
Spanner (B).
Right Pedal: align the Right Pedal (No. 58R) with the
Right Crank Arm (No. 57R) at 90 degrees. Insert
pedal into crank arm, then turn pedal clockwise as
tightly as you can by hand.
Tighten and secure with Spanner (B).
The assembly is now complete!
58-L

9
THE DISPLAY CONSOLE
FUNCTION KEY:
1. MODE: For selecting functions. Press and hold for a few seconds to values to 0.
FUNCTIONS AND SPECIFICATIONS:
1. SCAN -- Press “MODE” button until “SCAN” appears, monitor will rotate through all
the 6 functions: Time, speed, distance, calorie, ODO and pulse. Each display will
be hold 5 seconds.
2. TIME -- Count the total time from exercise start to end.
3. SPEED -- Display current speed.
4. DISTANCE -- Count the distance from exercise start to end.
5. CALORIES -- Count the total calories from exercise start to end.
6. ODOMETER -- The total distance which this function is refers to from battery capacity period runs.
7. PULSE RATE -- Press MODE button until “PULSE” appears. Before measuring your pulse rate, please place
your palms of your hands on. Both of your contact pads and the monitor will show your current heart beat rate
in beats per minute (BPM) on the LCD after 6
～
7 seconds. Remark: During the process of pulse measurement,
because of the contact jamming, the measurement value may be higher than the virtual pulse rate during the
first 2
～
3 seconds, then will return to normal level. The measurement value cannot be regarded as the basis of
medical treatment.
HOW TO USE:
1. AUTO ON/OFF: Without any signal for 4 minutes, the power will turn off automatically. As long as the
wheel is in motion or press any button, the monitor is in action.
2. BATTERY / TROUBLESHOOT: The display console uses two AA batteries, which are included. If the
display appears improper or becomes difficult to read, please try DIST CAL ODO RPM SCAN TIME
installing new batteries before contacting our customer service.

10
OPERATION & MAINTENANCE
OPERATING INSTRUCTIONS:
1. Please read all instructions before assembling the equipment. During assembling and use, please make sure to
follow all instructions carefully as any improper techniques of use or assembly may result in injury or damage to
the equipment.
2. The suggested exercise regimen for optimal results is 10-15 minutes per day, at least three times a week.
3. Before beginning exercise, always inspect the equipment to ensure that all moving parts, as well as hardware,
are secured properly and are in good condition.
4. To adjust the level of tension, turn the Tension Knob to the left or right and align the arrow to the preferred
tension level as shown below. This machine contains 10 different levels of tension, with Level 1 being the
lowest and Level 10 being the highest. Turn the Tension Knob to the left to decrease the level of tension, turn
the Tension Knob to the right to increase the level of tension.
MAINTENANCE INSTRUCTIONS:
Only use a dry cloth to gently wipe the bike. It is recommended that you clean the bike after each use.
Store the bike in a dry area; do not leave the bike outdoors as prolonged exposure to the extreme
weather will cause damage to the parts and affect the function.

THREE LEVEL AND FOLDING ADJUSTMENT: Turn and pull the knob to adjust the level.
LEVEL 1 LEVEL 2 LEVEL 3
FOLDING
Version 1.1
SEAT TUBE ADJUSTMENT: Turn and pull the knob to adjust the seat tube.
TRANSPORT WHEEL
11
Please adjust the end caps if
there is a slight imbalance
problem caused by uneven ground.
ADJUSTMENT GUIDE