Super Handy GUO092 User manual

Operator’s Manual
REV 1.0
Electric Power Dolly
WARNING:
Carefully review and understand all INSTRUCTIONS prior to operating this device. Failure to
follow the safety rules and other basic safety precautions may result in serious personal injury.
Keep these instructions in a safe place and accessible so that they can be reviewed as required.
Keep these instructions to assist in future servicing needs.

1
WARNING
• Thoroughly review the "Installation and Operation Guidelines" and familiarize yourself with
your electric dolly and its operation.
• Never store the battery pack together with nails, screws, keys and other metallic or sharp
objects. These items may cause short circuit of the battery terminal resulting in damage to the
battery and may cause a fire, endangering personal safety.
• Avoid contact with any fluid that leakes from the battery. Dispose of all batteries in appropri-
ate manner as these batteries will be dangerous and should no longer be used.
• Be sure to dispose of or recycle the battery according to local regulations.
• Before disposal, be sure to protect the terminal with insulating tape to prevent short circuit.
• Donot to disassemble or tamnper with the battery in any way. Any such tampering will
automatically void your product warranty.
• Do not attempt to charge a damaged battery pack. lease replace it immediately. A damaged
battery pack may cause a short circuit or fire.
• Battery packs are covered by manufacturers product warranty and will be replaced by vendor
if product is still under warranty.
• Do not burn the battery pack.
• Do not operate the dolly in an environment containing explosive or combustible materials.
• When the dolly is not in use, be sure to cut off the battery power.
• Be sure to use the charger and lead-acid battery packs provided by SuperHandy only. Other
types of batteries may burst and cause personal injury.
• Do not to use chargers with damaged wires or plugs., Chargers with such issues should be
replaced immediately.
• Do not to use the charger provided by SuperHandy to charge other batteries.
• Do not charge the battery in a humid environment, and do not cover the charger with clothes
or other items during charging.
• The use of accessories not recommended or provided by the charger manufacturer may lead
to the risk of fire, electric shock or personal injury.
• Always charge the battery at a temperature of 32°F-120°F (0°C-49°C).
• Always store the battery at a temperature of 32°F-86°F (0°C-30°C).
• Be sure to disconnect the charger when the battery is fully charged.
• Be sure not to completely discharge the battery. If not in use, be sure to charge the battery
every 3 months.
• Be sure not to exceed the maximum bearing capacity of the dolly Trailer Weight:
1620kgs/3600Lb; Tongue Weight: 270kgs/600Lb.
• Be sure to check that the ball head and the ball head cover, which must be securely locked
before towing.
• Always use factory-approved installation hardware, assemblies and accessories.
• Do not use the trailer dolly tow a load on a downhill grade, and always ensure that the towing
surface is flat and paved, and at a maximum angle of less than 4° when towing uphill.
• Do not use the dolly to move people.
• Do not operate this dolly under the influence of alcohol or drugs.
• Be sure to remove any objects or obstacles that may hinder the safe operation of the dolly.
• When assembling, maintaining or prepping the dolly for storage,, be sure to disconnect the
power supply from the dolly.
• Be sure not to operate or install the dolly without reading or understanding the operator's
manual.
• Do not operate this dolly if you are under 16 years old.

2
TECHNICAL SPECIFICATIONS
Main Use
SuperHandy electric power dolly is compact in structure and convenient in operation. It is used
for towing trailers, RVs, etc. equipped with ball head couplings. It has the functions of forward,
backward and steering, and can achieve movement over short distances or in compact spaces.
Product packaging list
MAIN COMPONENTS
SKU
Description
Power supply
Power
Maximum bearing capacity
Ball head specification
Size
Net weight/Gross weight
GUO092
Electric Power Dolly
DC24V,7Ah
800W
Trailer Weight: 1620kgs/3600Lb
Tongue Weight: 270kgs/600Lb
2"
50"x25"x38" (1262x632x950mm)
112/126lbs (51/57 kg)
1. Handle bar kit
2. Connecting rod
3. Adjusting lever kit
4. Frame & Power components kit
5. Swivel wheels x2
6. Hitch ball kit
7. Charger
8. Accessory pack (M10 nut 2PCS,
M10x55 bolt 2PCS, M10x16 bolt 2PCS,
M8x16 screw 2PCS, M8 nut 2PCS,
wheel cover 2PCS, pin assembly 5/8-in
4PCS)
9. 13-inch rear wheel x2

3
1. Steering switch: Control the dolly to move "forward" or "backward"
2. Speed regulating switch: Adjust the running speed of the dolly
3. Connecting rod: Connect the handle and the bracket
4. Power switch: "Turn on" or "Turn off" the power supply of the dolly. Please turn off the power
supply when not in operation
5. Battery case: With battery and controller placed inside
6. Hitch ball: Connect the towed vehicle with cover
7. Adjusting lever: Adjust the forward, backward, upward and downward positions of the ball
head
8. Pin: Lock the adjusting lever
9. Controller: Device to preset instruction
10. Battery pack: Two 12V 7AH lead-acid batteries
11. Rear wheel: Transmit traction force
12. Rear axle motor: Power supply source
13. Swivel wheel: Realize the change of direction
14. Bracket: Fix battery case and rear axle motor
15. Charger: INPUT 100~240VAC, OUTPUT 28.8VDC - 2.0A
16. DC charger socket: Connect the charger
17. Handle bar: Install the control switch
ASSEMBLY
Figure 1
1
2
4
3
Wire
1. Assemble handle bar
Insert the connecting rod into the handle
bar assembly, and thread the wire out from
the end of the connecting rod (Step 1);
Insert M10x55 bolt in alignment with the
hole (Step 2); Tighten M10 nut (Step 3);
Tighten M10x16 hexagon bolt (Step 4).
2. Assemble hitch ball
Align the groove of the ball head assembly
with the adjusting lever and select the
appropriate hole position (Step 1); Insert
two bolts (Step 2); Insert two B-pins for
fixing (Step 3).
21
3
Figure 2

4
6. Assemble handle bar kit
a. Insert the wire of handle bar assembly
through the square hole at the front end
of the bracket and thread it through the
round hole between the bracket and the
battery case (Step 1);
b. Align the handle bar assembly with the
hole position of the bracket, and insert
M10x55 bolt (Step 2); Tighten M10 bolt
(Step 3);
c. Lock it with M10x16 bolt. (Reminder:
Auxiliary round holes are set on both
sides of the bracket to facilitate the
observation and crossing of the wires.
The wire can be gently hook or pull)
5. Assemble hitch ball adjusting lever
Adjust the hitch ball position (forward,
backward, upward and downward)
according to the usage scenario, align with
the notch selection hole and insert the bolt
(Step 1); Lock the B-pin (Step 2).
3. Assemble swivel wheel
Align the Swivel wheel fixing shaft with the
hole under the bracket (Step 1); Insert
M8x55 bolt (Step 2); Tighten M8 nut (Step
3); Put on plastic decorative cover (Step 4)
and fix it with M8x16 bolt (Step 5).
4. Assemble rear wheel
First, remove the plastic sheath on the rear
axle transmission shaft, and remove the flat
key for later use. Put the inflation port of the
rear wheel on the rear axle shaft (Step 1);
Align the keyway hole, knock in the flat key
(Step 2); Tighten the M14x1.5 nut (Step 3).
5
4
1
3
2
Figure 3 Figure 4
1
2
3
Figure 5
1
2
4
3
2
1
Figure 6
Wire

5
9. Battery cable connection
Caution: Incorrect battery wire connection may
cause a short-circuit, it may lead battery destroy,
fire or physical danger.
8. After checking that the wiring harness is
connected accurately, replace the case
cover and secure the buckle (Step 1);
Cover the pipe plug for sealing (Step 2).
7. Terminal connections
Insert the terminals for the speed regulating switch, steering switch and controller tightly.
Figure 8
1
2
2
RECHARGE
BASE
+
BATTERY
BATTERY
-
+
-
POWER SUPPLY
Red
Red
Red
Black
Black
Controller

6
Power Switch Connection
Caution: Incorrect power switch cable connection may cause a short-circuit, it may lead
battery destroy, fir or physical danger.
OPERATION
Preparation before operation
1. Before operation, check that all bolts are fastened tightly, and the ball head rod is secured.
2. Be sure that the tires are free of defects such as cracks and bulges, and the tire pressure is
kept at 30±2psi (2.1±0.1kg/cm2).
3. Be sure the battery is charged in full, and check whether all switches are operated
effectively.
4. Perform no-load test run, to confirm that the Swivel wheel rotates flexibly and entire unit
moves forward and backward freely.
Battery “-”（Black）
Battery “+”（Red）
Controller “-”（Black）
Controller “+”（Red）
Contol Switch Controller Motor Connection
Y
G
B
Y
G
B
Electrical schematic diagram
Power switch
Steering switch
Speed regulating
switch
Controller
Phase line
Holzer line
Battery
pack
24KXS
M
B Y G

7
5. Be sure the towed trailer weighs less than1620kgs/3600Lb, and tongue weight is less than
270kgs/600Lb.
6. The towing road is required to be flat, with an uphill angle of less than 4°. This equipment is
not equipped with a brake device, so it cannot be parked on a ramp.
Selection of ball head position
1. In order to exert the maximum traction
force of the dolly and ensure sufficient
friction between the wheels and the
ground, please select a reasonable hitch
ball position according to the usage
scenario. As shown in the figure, when
driving in direction D, please toggle the
ball head adjusting lever to position A,
and when driving in direction R, please
toggle the ball head adjusting lever to
position B.
1. First, approach the dolly near the trailer's
hitch ball cover, and adjust the height of
the hitch ball according to the height of
the cover, so that the height of the hitch
ball is slightly lower than that of the
cover. Move the dolly so that the hitch
ball is concentric with the Z axis of the
cover, and slowly lower the trailer
through the elevator, so that the cover is
fully engaged with the hitch ball. After
confirming the reliable connection
between the hitch ball and the cover, lock
the safety hook.
Traction procedure
2. The height of the dolly's hitch ball can be
adjusted (Figure A), or the hitch ball can
be directly installed on the main bracket
(Figure B). The range of the ball head
height is 16.7″-24.5″. When installing the
trailer, always ensure that the connecting
rod is parallel to the ground. Any
inclination will affect the traction
efficiency and even pose safety hazards
(Figure C).
A
D
R
B
A
B
C
C

8
2. Switch on the power switch, and press the battery button on the speed regulating switch (the
battery indicator lights up). Pull the steering switch to position "D" for dragging, and position
"R" for pushing. Then press the speed control knob lightly, and the dolly starts to move. The
moving speed can be controlled by the pressing force (0-2.5km/h Variable).
3. Shut down the power after use. And park the dolly in the correct position. PLEASE
RECHARGE THE BATTERY WITHN 3 MONTHS OTHERWISE THE LEAD ACID BATTERY
MAY BE DESTRIED.
Overload protection
The dolly equipped with overload protection system, which will automatically shut down when
excess load is detected. Do not try to start while the is dolly overloaded and shut down.
Re-start only after the reducing the loading weight.
SERVICE GUIDE
Rear wheel replacement
a. Loosen M14 nut (No.16), knock the rear
wheel off alternately from left and right
with a soft hammer, and remove the flat
key (No.4).
b. Align the keyway surface, knock in the
flat key, sleeve the rear wheel on the rear
axle with the inflation port outwards, and
tighten the M14 nut.
Power Switch
D/R Switching
Battery
Button
Speed
Regulating
knob
D R
Loosen the nut
Align the keyway
Tighten the nut
Remove the flat key
Remove the rear wheel

9
Swivel wheel replacement
Power switch replacement
a. Loosen the screws on the wheel cover
(No.14) and remove the wheel cover.
Then remove M8 bolt (No.13) and nut,
and take out the Swivel wheel
downwards.
a. Loosen the screws on the wheel cover
(No.14) and remove the wheel cover. Then
remove M8 bolt (No.13) and nut, and take
out the Swivel wheel downwards.
b. Align the fixing shaft of the Swivel wheel
with the shaft sleeve in the bracket, insert
M8 bolt in alignment with the mounting
hole and tighten the nut, and then fix the
wheel cover with the screw.
1
4
3
2
4
1
3
2
Disconnect Remove all

10
Controller and battery replacement
Replacement of steering switch and speed regulating switch
b. Align the power switch with the square hole of the cover and directly press it to the bottom to
ensure that the chuck is hooked firmly. Plug in the terminal according to the Electrical
Schematic Diagram in Section 5.2, and then turn on the power supply after confirmation with
no errors.
a. Turn off the power switch (No.22) and open the battery case cover (No.23). Remove all
terminals of the controller (No.34) and the battery (No.27), loosen the screws at both ends of
the controller to remove the controller, and then remove the screws on the battery holder
(No.21) to take out the battery.
b. Install the battery and the controller in turn according to the above reverse steps, and
connect the terminals according to the Electrical Schematic Diagram in Section 5.2.
Note: Due to the transportation conditions, please buy NPP 12V 7A of the same specification/-
model locally for replacement of the battery.
Battery “-”（Black）
Battery “+”（Red）
Controller “-”（Black）
Controller “+”（Red）
Remove the terminals

11
a. Open the upper cover of the battery case, locate the connecting terminals of the steering
switch, the speed regulating switch and the controller according to the Electrical Schematic
Diagram, and remove them.
b. Loosen the bolts between the handle bar
assembly and the connecting rod, and
between the connecting rod and the
bracket, pull out the wires and remove
the handle bar assembly.
d. Loosen the lock screw at the lower side
of the steering switch\speed regulating
switch, and move the switch out. Be sure
not to use too much force, and pay
attention to protecting the wires and
terminals.
c. Rotate the handle sleeve and forcibly pull
it out. Since the handle sleeve is prone to
hardening when the ambient temperature
is low, it is recommended to cover it with
hot and wet cotton cloth before pulling it
out.
e. Put the new steering switch and speed
regulating switch on the handle bar and
move them to the appropriate position,
lock the lower screw and put on the
handle sleeve, thread the wires respec-
tively through the round holes of the
square pipes on both sides, and pay
attention to protecting the wires and
terminals.
Loosen the bolts
Loosen the bolts
Loosen the screw
Loosen the screw Speed regulating switch
Lock the screw
Steering switch
Lock the screw

12
f. Thread the wire into the connecting rod, and then through the front end of the bracket into the
battery case. Assemble the handle bar assembly with the connecting rod, and the connect-
ing rod with the bracket, and insert the wire terminal with the terminal of the controller tightly.
Note: Please disconnect the charging plug and the tool power switch before the above
maintenance operation. Maintenance shall be carried out under the professional guidance of
the manufacturer, service agent or similar full-time personnel to avoid danger. Damaged
machines, accessories and packaging materials must be treated by classification according to
local environmental protection requirements.
MAINTENANCE AND STORAGE
1. For storage, the product shall be stored in a cool, dry and dust-free place, to avoid direct
sunlight and rain.
2. During the transportation, loading and unloading of the product, it is prohibited to cast, drop,
throw, trample and perform other barbaric operations on the product.
WARRANTY
Twelve (12) months for workmanship of the product, except for wearing parts. Warranty period
starts from the product purchase date. Warranty covers material quality and workmanship only.
Warranty does not cover product for issues caused by improper usage or any operation not in
accordance with the specifications of this manual. Any modification or tampering with the
product in any way voids the warranty.
g. Arrange the excess wires in the battery case, secure them with
a strap or zip-tie, and put on the battery case cover.
Wire
Terminal connection

13
TROUBLE SHOOTING
EXPLODED AND PARTS LIST
Problem(s)
Power dolly do not works.
Power dolly stop during
working.
Possible Cause
Power shut down.
1. Batteries in low.
2. Power dolly
overloaded.
Corrective Action
1. Check the battery status make sure it in full .
2. Check the power switch in power on status.
3. Check the connect cable without loose
1. Recharge the power dolly in full
2. Reduce the loading weight with the capacity
and re-start.

14
Part No.
1
2
*3
4
5
*6
7
*8
9
10
11
12
13
14
*15
16
17
18
19
20
21
*22
Description
Hexagon flange lock nut M10
Rear axle 24V~800W
13-inch power wheel
Ordinary flat key 5x5x28
Handle sleeve
Speed regulating switch
Square pipe plug 40*40
Steering switch
Handle bar assembly
Hexagon flange bolt M10x30
Bracket assembly
Dome plug Φ30
Hexagon flange bolt M8x55
Wheel cover
Universal wheel, 8-in
Hexagon flange nut M14x1.5
Binding post 2P-3
Hexagon flange lock nut M8
Hexagon flange bolt M10x55
Large washer
Holder
Power switch
Q’ty
6
1
2
2
2
1
1
1
1
4
1
2
2
2
2
2
1
2
2
3
1
1
Part No.
23
24
25
26
*27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
Description
Battery case cover
Charger 24V 2A
DC socket
Case body
Battery 12V 7Ah
Connecting rod
Hexagonal-head bolt M10x16
Wire harness 4
Wire harness 2
Wire harness 1
Wire harness 3
Trailer controller 24V 800W
Combined screw M5x16
Rectangular pipe plug 80*40
Screw M8x16
Pin assembly 5/8-in
Adjusting lever assembly
Hitch ball installation assembly
Hitch ball
White single-sided sponge
rubber 35*20*6
Q’ty
1
1
1
1
2
1
2
1
1
1
1
1
5
2
2
4
1
1
1
2
Note: "*" is the quick-wear part of the product.

Great Circle USA
Support Line: 1-866-493-0524
[email protected]
www.greatcircleus.com
Size: 145x210mm REV 07/14/22 6.02.00006157克双铜