Hosim 9125 User manual

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• WARNING: RISK OF INJURY!
Do not stand directly behind the car while driving to avoid personal injury from
rocks,sticks, or other thrown objects, especially during full throttle starts. Keep
any spectators and animals at a safe distance. Wearing eye protection is
recommended.
WARNING！CAUTION!DANGER!FIRE HAZARD!
CHARGING AND DISCHARGING BATTERIES HAS THE POTENTIAL FOR
FIRE, EXPLOSION, SERIOUS INJURY, AND PROPERTY DAMAGE IF NOT
PERFORMED AS PER THE INSTRUCTIONS. BEFORE USE, READ AND
FOLLOW ALL MANUFACTURER’S INSTRUCTIONS, WARNINGS AND
PRECAUTIONS.
NEVER ALLOW CHILDREN UNDER THE AGE OF 14 TO CHARGE OR USE
THE BATTERIES WITHOUT THE SUPERVISION OF A RESPONSIBLE,
KNOWLEDGEABLE ADULT.
DO NOT LEAVE THE BATTERIES OR CHARGER UNATTENDED WHILE
CHARGING.

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Charging and handling precautions
• DO NOT let any exposed battery contacts or wires touch each other.
This will cause the battery to short circuit and create the risk of fire.
• While charging, ALWAYS place the battery on a nonflammable surface
such as concrete.
• NEVER charge batteries on wood, cloth, carpet or on any other flammable
material.
• ALWAYS charge batteries in a well-ventilated area.
• REMOVE flammable items and combustible materials from the charging
area.
• DO NOT place objects on top of the charger or batteries.
• If any battery or battery cell is damaged in any way, do NOT charge,
discharge, or
use the battery.
• DO NOT disassemble, crush, short circuit, or expose the batteries or cells to
flame or
any other source of ignition.
• If a battery gets hot to the touch during the charging process, disconnect the
battery
from the charger and discontinue charging immediately.
• ALWAYS unplug the charger and disconnect the batteries when not in use.
• DO NOT leave the charger and batteries unattended while charging,
discharging, or
any time that the charger is ON with batteries connected.
If there are any signs of a malfunction or in the event of an emergency, unplug
the charger from the power source and disconnect the batteries from the
charger.
• REMOVE the batteries from your car before charging.
• DO NOT expose the batteries and charger to water or moisture.
• ALWAYS store battery packs safely out of the reach of children and pets.
• DO NOT charge batteries under ANY of the following conditions:
- Batteries that are hot to the touch.
- Batteries that are not expressly stated by the manufacturer to be suitable to
accept the power output (voltage and amperage) the charger delivers during
the charging process.
- Batteries that are damaged or defective in any way.
Examples of damage or defects include, but are not limited to, batteries with
dented cells, damaged or frayed wires, loose connections, fluid leaks, corro-
sion,
plugged vents, swelling, cell deformity, impact damage, melted components, or
any
other signs of damage.
- Battery packs that have been altered from original manufacturer configura-
tion.
- Non-rechargeable batteries (explosion hazard).
- Batteries that have missing or unreadable labels, preventing you from proper-
ly
identifying the battery type and specifications.
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Precautions
• Because your model is controlled by radio, it is subject to radio interference
from many
sources that are beyond your control. Since radio interference can cause
momentary
losses of radio control, always allow a safety margin in all directions around
the model in
order to prevent collisions.
• Range test your radio system in the area that you will be running the model to
ensure
that you have range that covers the area you want to drive.
After range testing, drive slowly in the area at first to make sure there is no
interference
that can cause momentary lapses of control.
• Always use new or freshly charged batteries in your model to maximize signal
power
output and range.
• The motors, batteries, and speed control can become hot during use.
Be careful to avoid getting burned.
• Choose the right location to drive. Your model is absolutely not intended for
use on
public roads or congested areas where its operation can conflict with or disrupt
pedestrian or vehicular trafc. This is to prevent the possibility of injury or death
resulting from collision with the model by another human being or animal.
• Do not drive the RC car by yourself. Bring a friend along to act as a spotter to
alert
you if a person or animal is approaching.
• Do not operate your model at night, or anytime your line of sight to the model
may be
obstructed or impaired in any way.
• Do not drive the model close to you where a mistake or loss of control could
cause the
model to collide with you or any spectator.
• Always carefully inspect your model for damage or loose components before
running.
Do not drive the model if it is damaged in any way. Tighten any loose hard-
ware.
• Never pick up the model by its tires or wheels. Always keep your hands
safely clear of
moving parts whenever the batteries are plugged in.
• Keep the RC car stored with the batteries removed, out of the reach of
children and
protected from access by any other unauthorized driver.
• Always disconnect the batteries in the model when it is not in use.
Never store the vehicle with batteries in the model, as this can cause a fire
leading to
property damage, serious personal injury or even death.
• Do not continue to operate the model with low batteries or you could lose
control of it.
Indications of low battery power include slow operation and delayed vehicle
response.
Stop immediately at the first sign of weak batteries. When the batteries in the
transmitter become weak, the red power light will begin to flash.
Stop immediately and install new batteries.
• Most importantly, use good common sense at all times.

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Speed control
Your model’s electronic speed control (ESC) is an
extremely powerful electronic device capable of
delivering high current. Please closely follow these
precautions to prevent damage to the speed control
or other components.
• Disconnect the Battery: Always disconnect the
battery or batteries from the speed
control when not in use.
• Insulate the Wires: Always insulate exposed wiring
with heat shrink tubing to prevent
short circuits.
• Transmitter on First: Switch on your transmitter first
before switching on the speed
control to prevent runaways and erratic perfor-
mance.
• Don’t Get Burned: The ESC and motor can
become extremely hot during use, so be
careful not to touch them until they cool. Supply
adequate airflow for cooling.
• No Reverse Voltage: The ESC is not protected
against reverse polarity voltage.
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MOTOR CARE
• Seat the motor brushes by driving smoothly on a flat surface during use of the first battery charge. Failing to
do so can greatly reduce motor performance and functional life.
• Prolong motor life by preventing overheating conditions. Undue motor wear results from frequent turns, stops
and starts, pushing objects, driving in deep water and tall grass, and driving continuously up hill.
Tighten the wheel
Tighten the wheel nuts before each
running session and periodically
check the tightness of the wheel
nuts while you are running.

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Transmitter DIY Car Shell User ManualBattery Fireproof Bag
7.4V 1600mAh Battery Pack
%ODFN
%OXH
9125 Product Configuration
Wheelnut
USB charger LED Lights Battery strap Body clip
Hex Wrench
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T Plug Connector

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Remove The Truck Body
Make sure all accessories are properly attached, remove the
protection film from the body before turning on the truck.
Pull out the pins and remove the body
(1).Make the LED wire pass
through the body bracket.
(2).Lock the LED into the front
and rear bumper.Connect the
wire to the ESC socket.
Install LED wire

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Install Transmitter Batteries
1.Remove the battery cover on the bottom of
the transmitter(figure 1)
2.Install 3*1.5V AA batteries( not included)
in correct polarities (Figure 2)
3.Close the battery cover (Figure 3)
1.When installing batteries , please be sure to
match the polarities labeled on the battery holder.
2.Do not mix old and new batteries.
3.Do not mix different type of batteries.
Notice:
(Figure1) (Figure2) (Figure3)
(3).Place your fully charged batteryin the
battery slot.connect thebattery connector.
Don't forceit,it only goes one way! (Figure 7)
Charge and Install Rechargeable Battery Pack
(2).Press both side of the battery
cover on the bottom of the car,
then remove the battery cover.
(Figure 6)
(4).Replace the battery cover to
thebottom of the car and close
the bettery compartment door.
(Figure 8)
(1)a) Insert the USB charger into the outlet ( figure 4 )
note the power light turns red .
b)Connect the battery pack to the USB charger
(figure 5) note the green light flashs.
c)When charging is completed , green light turns
solid.
(Figure 4)
(Figure 5)
USB Charger Precautions
(1).The USB charger does not apply the input current bigger than 4A.
(2).When input current is bigger than 4A,the USB charger will start-up protection
mode ,all the lights will turn off.
(Figure 8)
(Figure 6)
(Figure 7)

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Transmitter instructions
A.Power Switch
B.Steering Trim
C.Steering Dual Rate
Adjustment
D.Steering Reverse
Switch
E.Speed Mode (Full
Speed And Half
Speed Mode)
1. Turn on the power
switch on the
transmitter, red LED
will flash.
2.When pairing
successful with the car,
red LED and blue LED
will turn solid.
(1)Red LED
(2)Blue LED
Blue LED will flash when power
is low on the transmitter, please
replace the batteries before
continuing
NEUTRAL
1. Forward 4. Right
2. Brake 5. Backward
3. Left
PLAY TIME
15 min.

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A.Power Switch
When pairing for the first time,both the car and the
transmitter have to be turned on within 3 seconds
to pair the frequency. TheblueLED and red LEDon
the transmitter will soild when pairing successful,at
the same time the LEDon the car will turn solid.
B.Steering Trim
When the chassis switch is turned on and the front tires
are not straight,use the ST.TRIM to adjust the position.
ƔZKen the car oversteers to the left , ST.TRIM should be
adjusted clockwise.
ƔZKen the car oversteers to the right, ST.TRIM should be
adjusted anticlockwise.
Transmitter switch instructions
E.Speed Mode (Full Speed And Half Speed Mode)
D.Steering Reverse Switch
(Figure10)
ƔWhen the the switch on NOR, turn the steering wheel clockwise the car will turning to right;
turn the steering wheel anticlockwise the car will turning to left. (Figure9)
ƔWhen the the switch on REV, turn the steering wheel clockwise the car will turning to left;
turn the steering wheel anticlockwise the car will turning to right. (Figure10)
H
(Full speed mode)
L
(Half speed mode)
ƔSwitch on H: full speed mode
ƔSwitch on L: half speed mode
SUGGEST:please turn the switch to the half speed mode(L) when you play with the
car for the first time, avoid damaging the car!
Factory settings for the speed mode all set it on "L"(half speed mode ), when you
want to begin your high speed experience, please set it to "H" (full speed mode ).
C.Steering Dual Rate Adjustment
48°
10°
10°
48°
48°
10°
10°
48°
ST.D/R knob can be set to control the steering throw
Ɣturning the ST.D/R knob clockwise to increase the steering throw ,the
maximun angle is 48°.
Ɣturning the ST.D/R knob anticlockwise to reduces the steering throw,the
minimum angle is 10°
(Figure9)
LEFT RIGHT LEFTRIGHT

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1. ALWAYS turn on your transmitter before you turn on the receiver in the vehicle. Always
power off the receiver before turning your transmitter off.
OPERATION
4. ALWAYS start with low speed, or the vehicle may slip or run on curves. (as shown
on Pic 1 ) NEVER operate your vehicle in max speed. Operating the vehicle in highest
speed may hurt yourself and damage your vehicle.
(Pic 1)
c. High Speed
b. Medium Speed
a. Start
Start
Medium
High speed
2. ALWAYS operate your vehicle in
a wide open area. Opeating the
vehicle on slipery floor or indoors
may crash because of the high
speed.
3. WARNING: 9125 waterproof feature,
please be cautious that the water level should
be lower than the bottom of the truck. If
excessive amount of water gets into the body
of the truck and cause damage or other related
problems, We will not be responsible for such
damages. Customers will be responsible for
any replacements and additional accessories
if needed.
0QFSBUJPO

12
Battery/charger
not working
Rebinding the
remote control
with the car
Wheels are not
spinning properly
/coming off
Troubleshooting
Firstly, Plug in the charger
1. Solid red light on the charger = Charger is
plugged in.
2. Blinking red light on the charger = Charger is
defective.
1. Connect the li-ion battery.
2. Turn on the remote control first and within 3
seconds turn on the car as well.
3. Then remote control will bind to the car
automatically.
4. Please remember do not to touch the trigger
during binding.
1. Tighten the locknuts (Part Number 25-WJ02) that
are holding the wheels in place.
2. Check for any missing pieces like optical axis (Part
Number 25-ZJ09) and/or rear dog bone (Part Number
25-WJ05).
3. If all parts are intact, wheels still are not spinning
properly,the differential may be broken and needs to
be replaced.
If not successful, repeat this action 2-3 times.
Charger is normal,then plug in the battery
1. Blinking green light on the charger = Battery is
plugged in and charging.
2. Solid green light on the charger = Battery is
fully charged
3. Change from solid red light to flashing=Battery
is defective.
4. Blinking green light after 3-4hrs of charging =
Battery is defective.
Or please try charging the battery using the
second USB charger to determine which is
defective.

1313
Scratched top
Troubleshooting
-
The RC car comes with a protective plastic film
that needs to be removed prior to using the car.
Reverse command
not responding
When the car is moving forward in order to go
in reverse please execute the following
commands on the remote:
first throttle push will bring the car to a stop and
in neutral mode. The second throttle push will
make the car go in reverse.
(please refer to Transmitter Instructions in this
User Manual)
RC car will not
pair with the
remote
1. Replace the batteries of the remote with brand
power.
2. The RC car has a thermal protection feature.
When the ESC detects that the temperature is
too high, it will automatically start thermal
protection.
Thus, it needs to be switched off and wait for a
few minutes to cool the temperature down.
3. Keep the remote and the car a few feet away
from each other while pairing.
4. Move away from large metal objects(vehi-
cles,etc.)
5. Remind the remote control with the car, and
check the light of the ESC(electronic speed
controller) and remote control, it should be a
solid red.

14
13
RC car will not
pair with the
remote
RC car going on
its own and not
responding
correctly
Troubleshooting
6. Unplug the wires connecting the servo and the
ESC, then pair the car with the remote control
again.
If the car pairs with the remote, then the servo
might be the problem.
If the car still can't pairs with the remote, then the
ESC might be the problem.
1. Do not press any buttons on the remote
control while pairing with the car.
2. Rebind the remote and car and turn them on
within 3 seconds so you reset the commands
and car responds properly.
Steering not
working properly
1. Replace the batteries of the remote with brand
new ones,and make sure the car battery is full
power.
2. Turn off the switch on the remote control, then
on, and
pair again. Make sure not to touch the throttle
when pairing.
3. Clean the steering arm set and make sure the
arm is still in place, connected to the car.
4. Check the light of the transparent wire coming
out of the car; it should be a solid red.

15
Steering not
working properly
Stripping sound
upon accelerating
Troubleshooting
5. Unplug the wires connecting the servo and the
ESC, then pair the car with the transmitter again.
This is to check the defective part; if the car pair
with the remote, then the servo might be the
problem.
6. Servo and remote controller can be ordered
through our website www.hosim.com
-
1. Inspect the car and make sure all the parts are
in place and no foreign objects were caught up in
it.
Please refer to the schematic in this User
Manual to properly check the parts.
2. Check the front and rear differentials (Part
Number M25-ZJ06) if they are functioning
properly with both the axels and main drive shaft.
3. Make sure that the gears of either the differen
tial and/or
main drive shaft (Part Number M25-ZJ05) are
not stripped.