Team Losi MICRO 4X4 User manual

Not responsible for errors.
Losi, a Division of Horizon Hobby, Inc.
Before operating this vehicle, please read all printed materials thoroughly.
Operation Manual
MICRO 4X4
1/24-SCALE ELECTRIC RTR 4X4 SCALE TRAIL TREKKER™

WARNING: Read the ENTIRE instruction manual to
become familiar with the features of the product before
operating. Failure to operate the product correctly can result
in damage to the product, personal property and cause
serious injury.
This is a sophisticated hobby product and NOT a toy. It must
be operated with caution and common sense and requires
some basic mechanical ability. Failure to operate this Product
in a safe and responsible manner could result in injury or
damage to the product or other property. This product is not
intended for use by children without direct adult supervision.
Do not attempt to disassemble, use with incompatible
components or augment product in any way without the
approval of Horizon Hobby, Inc. This manual contains
instructions for safety, operation and maintenance. It is
essential to read and follow all the instructions and warnings
in the manual, prior to assembly, setup or use, in order to
operate correctly and avoid damage or serious injury.
Introduction
Thank you for choosing the Micro 4x4 from Losi. This guide
contains the basic instructions for operating your new Micro
4x4. While the Micro 4x4 is great for rst-time RC drivers, it
does require some mechanical experience. It is critical that
you read all of the instructions and all accompanying printed
material in order to operate your model correctly and avoid
unnecessary damage. Please take a moment to look them
over before running your model.
Notice
All instructions, warranties and other collateral
documents are subject to change at the sole discretion
of Horizon Hobby, Inc. For up-to-date product literature, visit
http://www.horizonhobby.com and click on the support tab for
this product.
Meaning of Special Language
The following terms are used throughout the product
literature to indicate various levels of potential harm when
operating this product:
NOTICE: Procedures, which if not properly followed,
create a possibility of physical property damage
AND a little or no possibility of injury.
CAUTION: Procedures, which if not properly followed,
create the probability of physical property
damage AND a possibility of serious injury.
WARNING: Procedures, which if not properly followed,
create the probability of property damage,
collateral damage, and serious injury OR create
a high probability of supercial injury.
Register your Losi Product Online
Register your vehicle now and be the rst to nd out about
the latest option parts, product updates and more. Log on to
WWW.LOSI.COM and follow the product registration link to
stay connected.
Connect - Register - Win
Visit WWW.LOSI.COM/REGISTER and follow the product
registration link to stay connected.
For registering your Losi Product you will be automatically
entered for a chance to win the Losi Pick-Your-Prize
Sweepstakes of $1,000 (retail value) based on winner
preference.
Losi/Horizon Support
If you have any questions concerning setup or operation of
your 1/24 vehicle please contact the appropriate Horizon
Product Support ofce (see warranty).
Kit Contents
• Vehicle
• Transmitter
• 4 AA batteries (for transmitter)
• Losi 4.8V 220mAh NiMH Pack
• Losi AC wall charger (110V)
• 4-way wrench
Warning
Although the best material and components are used, and
due to the size of this model, using anything other than
genuine Losi replacement and performance parts specically
designed for the Losi Micro 4x4 could cause damage.
2
Losi is a registered trademark of
Horizon Hobby, Inc.

3
Charging Warnings and Precautions
Failure to exercise caution while using this product and
comply with the following warnings could result in product
malfunction, electrical issues, excessive heat, FIRE, and
ultimately injury and property damage.
• Read all safety precautions and literature prior to use of
this product.
• Never leave the battery and charger unattended during
use.
• Never attempt to dismantle the charger.
• Never attach your charger to both an AC and DC power
source at the same time.
• Never allow minors to charge battery packs.
• Never impact charger or batteries.
• Never attempt to charge dead or damaged batteries.
• Never attempt to charge a battery pack containing
different types of batteries.
• Never charge a battery if the cable has been pinched or
shorted.
• Never allow batteries or battery packs to come into
contact with moisture at any time.
• Never charge batteries in extremely hot or cold places
(recommended between 50-80 degrees F) or place in
direct sunlight.
• Always use only rechargeable batteries. This charger
cannot charge batteries such as “heavy duty,” “Alkaline
battery,” or “Mercury battery.”
• Always disconnect the battery after charging, and let the
charger cool between charges.
• Always inspect the battery before charging.
• Always terminate all processes and contact Horizon
Hobby if the product malfunctions.
• Always keep batteries and charger away from any
material that could be affected by heat (such as ceramic
and tile), as they can get hot.
• Always monitor the area, use a re alarm and have a re
extinguisher.
• Always connect the charge cable to the charger rst,
then connect the battery to avoid short circuit between
the charge leads. Reverse the sequence when
disconnecting.
• Always constantly monitor the temperature of the battery
pack while charging.
• Always end the charging process if the charger or
battery becomes hot to the touch or starts to change
form (swell) during the charge process.
RTR Getting Started
Plug the AC charger into the proper wall receptacle (110v-
US version). Plug the battery into the charger and let it
charge for 1 hour for the rst time. After running or when the
Micro 4x4 slows noticeably, recharge the battery pack for 2–3
hours for a full charge.
Your Losi Micro 4x4 includes (4) AA, heavy-duty, non-alkaline
batteries for the transmitter. Remove the transmitter battery
cover by sliding the cover from left to right. Install the four (4)
AA batteries into the battery holder. Pay close attention to the
correct direction of the positive (+) and negative (-) ends as
marked in the tray. Once all 4 batteries have been installed,
reinstall the battery cover by sliding it on from right to left.
3. Plug in the battery lead into the speed controller lead and

replace the body. Secure the body with the included body
clips.
ALWAYS turn on the transmitter rst by sliding the switch
“ON”. The small red and green lights above the switch should
both light up. If not, check for low or incorrectly installed
batteries.
With the transmitter on, turn on your vehicle by sliding the
switch to the “On” position (located on the bottom of the
chassis). If the wheels spin, adjust the “TH. Trim” knob
located to the lower right of the steering wheel until they
stop, to go forward pull the trigger back. If you should need
reverse, wait for the model to stop then push the trigger
forward. When going forward, the model should move in a
straight line. If not, adjust the “ST.Trim” so that it tracks in a
straight line without having to turn the steering wheel. After
you are nished running, turn the Losi Micro 4x4 off FIRST
by sliding the switch to the “OFF” position. After the model
has been turned off, turn off the transmitter by sliding the
switch to the “OFF” position.
Safety Precautions
Age Recommendation: Not for children under 14 years. This
is not a toy.
This is a sophisticated radio controlled model that must be
operated with caution and common sense. Failure to operate
your Micro 4x4 in a safe and responsible manner could result
in damage to the model and property. Horizon Hobby, Inc.
shall not be liable for any loss or damages, whether direct,
indirect, special, incidental, or consequential, arising from the
use, misuse, or abuse of this product or any product required
to operate it.
• This model is controlled by a radio signal that is subject
to interference from many sources outside your control.
This interference can cause momentary loss of control
so it is advisable to always keep a safety margin in all
directions to avoid collisions.
• Always operate your model in an open area away from
cars, trafc and people.
• Never run out into the street for any reason.
• Never run your Micro 4x4 with low transmitter batteries.
• Carefully follow the directions and warnings for this and
any optional support equipment that you use.
• Keep all chemicals, small parts and anything electrical
out of the reach of children.
Tools and Items You Will Find Handy
• Soft bristle brush for cleaning
• 1.5mm Allen Wrench (LOSA99105)
• 2mm Allen Wrench (LOSA99106)
• .050-inch Allen Wrench (LOSA99100)
• Losi Nutdriver: 4.5mm - LOSA99160
• Losi Micro Screwdriver (LOSB1602)
Note: Use only Losi or other high-quality tools. Use
of inexpensive tools can cause damage to the small
screws and parts used on this type of model.
4

5
The Radio System
The following is an overview of the various functions and
adjustments found on the Micro 4x4 radio system. Since
the Micro 4x4 operates on a radio signal you control, it is
important for you to read and understand about all of these
functions and adjustments before driving.
The ESC/Receiver
1. On/Off switch: Powers the receiver and ESC
2. Bind Button: Used to “bind” the receiver to the
transmitter.
3. Steering Port: Where the steering servo(s) plugs in (note
wire connection order)
4. Motor Lead: Connects to the wire leads from the motor.
5. Indicator Light: Shows that a frequency/channel is being
received.
6. Battery Lead: Connects to the battery pack for power.
The Transmitter
1. Steering Wheel: Controls direction (left/right) of the
model.
2. Throttle Trigger: Controls speed and direction (forward/
reverse) of the model.
3. Antenna: Transmits signal to the model.
4. On/Off Switch: Turns the power on/off for the transmitter.
5. Indicator Lights: Green (right) light indicates adequate
battery power. Red (left) indicates signal strength.
6. ST. Trim: Adjusts the “hands off” direction of the model.
7. TH. Trim: Adjusts the motor speed to stop at neutral.
8. Steering Rate: Adjusts amount front wheels move when
the steering wheel is turned left and right.
9. ST. REV: Reverses the function of the steering when the
wheel is turned left or right.
10.TH. REV: Reverses the function of the speed control
when pulled back or pushed forward.
11. Bottom Cover: Covers and holds the batteries that
power the transmitter.
Chassis Tuning
The following are simple adjustments and easily maintained
settings to assure proper operation and performance.When
making any adjustments, do so in small increments. Always
check for other parts of the chassis that are affected.
Center Transmission Slipper
The Micro 4x4 is equipped with a slipper device that provides
protection for the transmission. The slipper is primarily used
to help absorb sudden impacts on the drivetrain and is set
from the factory and sealed by the gear cover. If the slipper
loosens (motor sounds like its moving but the vehicle doesn’t
move), remove the center transmission and cover per the
exploded view. Adjustment is made by turning the adjustment
nut clockwise (to the right) to reduce the slip.
Setting the Gear Mesh
The motor screws should be slightly loose. Slide the motor
forward allowing the pinion gear to mesh with the spur gear.
Snug (not tighten) the bottom motor screw and try rotating
the spur back and forth. There should be a slight bit or
movement before the motor is forced to turn over. If not, pull
the top of the motor back slightly and recheck. If there is
too much slop between the gears, push the top of the motor
forward. When set properly, the spur gear can be spun freely
with very little noise. Make sure to tighten both motor screws
and replace the gear cover before running.
14
2
6
5
3