Driving Precautions; Powering On The Vehicle; Before Running Your Vehicle; Run Time - Horizon Hobby LOSI 22S NO PREP DRAG ROLLER: 1/10 2WD Manuel D'utilisation

DRIVING PRECAUTIONS

• Maintain sight of the vehicle at all times.
• Routinely inspect the vehicle for loose wheel hardware.
• Routinely inspect the steering assembly for any loose hardware. Driving the vehicle
off-road can cause fasteners to loosen over time.
• Do not drive the vehicle in tall grass. Doing so can damage the vehicle or electronics.
• Stop driving the vehicle when you notice a lack of power. Driving the vehicle when
the battery is discharged can cause the receiver to power off. If the receiver loses power,
you will lose control of the vehicle. Damage due to an over-discharged Li-Po battery is
not covered under warranty.
CAUTION: Do not discharge a Li-Po battery below 3V per cell. Batteries discharged
to a voltage lower than the lowest approved voltage may become damaged,
resulting in loss of performance and potential fire when batteries are charged.
• Do not apply forward or reverse throttle if the vehicle is stuck.
Applying throttle in this instance can damage the motor or ESC.
• After driving the vehicle, allow the electronics to cool before driving the vehicle again.
IMPORTANT: Keep wires away from all moving parts.

BEFORE RUNNING YOUR VEHICLE

1. Check for free suspension movement. All suspension arms and steering components should
move freely. Any binds will cause the vehicle to handle poorly.
Tip: To increase the ride height and ground clearance of your vehicle, install the included
shock spacers.
2. Charge a battery pack. Always charge the battery pack as per the battery and/or
charger manufacturers' instructions.
3. Set the transmitter steering trim. Follow the instructions to set the steering trim/subtrim
so that the vehicle drives straight with no input to the steering.
4. Perform a Control Direction Test.

RUN TIME

The largest factor in run time is the capacity of the battery pack. A larger mAh rating increases
the amount of run time experienced.
The condition of a battery pack is also an important factor in both run time and speed. The
battery connectors may become hot during driving. Batteries will lose performance and
capacity over time.
Driving the vehicle from a stop to full speed repeatedly will damage the batteries and
electronics over time. Sudden acceleration will also lead to shorter run times.

TO IMPROVE RUN TIMES

• Keep your vehicle clean and well maintained.
• Allow more airflow to the ESC and motor.
• Change the gearing to a lower ratio. A lower ratio decreases the operating temperature
of the electronics. Use a smaller pinion gear or larger spur gear to lower the gear ratio.
• Use a battery pack with a higher mAh rating.
• Use the optimum charger to charge battery packs.

TROUBLESHOOTING GUIDE

PROBLEM POSSIBLE CAUSE
Battery not charged or plugged in
Vehicle does not operate ESC switch not "ON"
Transmitter not "ON" or low battery
Pinion not meshing with spur gear
Pinion spinning on motor shaft
Motor runs but wheels
do not rotate
Transmission gears stripped
Drive pin broken
Servo plug not in receiver properly
Steering does not work
Servo gears or motor damaged
Will not turn one direction Servo gears damaged
Motor wire solder joint is damaged
Motor wire broken
Motor does not run
ESC damaged
Battery voltage is low
Motor over-geared
ESC gets hot
Driveline bound up
Battery pack not fully charged
Poor run time and/or sluggish
Charger not allowing full charge
acceleration
Driveline bound up
Transmitter batteries low
Poor range and/or glitching Vehicle battery low
Loose plugs or wires
LOSI 22S PRO NO PREP DRAG ROLLER: 1/10 SCALE 2WD • INSTRUCTION MANUAL
®

POWERING ON THE VEHICLE

1. Center the ST TRIM and TH TRIM dials on the transmitter.
2. Power on the transmitter.
3. Install a fully charged battery pack per the Installing the Battery section.
4. Power on the ESC.
IMPORTANT: The vehicle MUST remain on a flat, level surface and motionless
for at least 5 seconds.

PERFORMING A CONTROL DIRECTION TEST

Perform a control test with the vehicle wheels off the ground. If the wheels rotate after the
vehicle is powered ON, adjust the TH Trim knob until they stop. To make the wheels move
forward, pull the trigger. To reverse them, wait for the wheels to stop, then push the trigger.
When moving forward, the wheels should maintain a straight line without any steering wheel
input. If not, adjust the ST Trim knob, so the wheels maintain a straight line without having to
turn the steering wheel.
SOLUTION
Charge battery/plug in
Turn on ESC switch
Turn on/replace batteries
Adjust pinion/spur mesh
Tighten pinion gear setscrew on motor shaft flat spot
Replace transmission gears
Check and replace drive pin
Make sure the steering servo plug is connected to the receiver steering channel, noting proper polarity
Replace or repair servo
Replace or repair servo
Resolder the motor wire with the proper equipment
Repair or replace as needed
Contact Horizon Hobby Product Support
Check battery voltage and charge if necessary
Use smaller pinion or larger spur gear
Check wheels and transmission for binding
Recharge battery
Try another charger
Check wheels, transmission for binding
Check and replace
Recharge battery
Check all wire connections and plugs
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