ECX Circuit ECX03330IT1, Instruction Manual

2

EN

CIRCUIT

™

NOTICE

All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby, LLC. For up-to-date product 

literature, visit http://www.horizonhobby.com and click on the support tab for this product.

Safety Precautions and Warnings

As the user of this product, you are solely responsible for operating in a 

manner that does not endanger yourself and others or result in damage to the 

product or property of others. 
This model is controlled by a radio signal 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 safe distance in all directions 

around your model as this margin will help avoid collisions or injury.
•  Never operate your model with low transmitter batteries.

•  Always operate your model in open spaces away from 

full-size vehicles, traffic and people.

•  Never operate the model in the street or in populated areas for any 

reason.

•  Carefully follow the directions and warnings for this and any optional 

support equipment (chargers, rechargeable battery packs, etc.) you use.

•  Keep all chemicals, small parts and anything electrical out of the reach 

of children.

•  Never lick or place any portion of the model in your mouth as it could 

cause serious injury or even death.

•  Exercise caution when using tools and sharp instruments.

•  Take care during maintenance as some parts may have sharp edges.

•  Immediately after using your model, do NOT touch equipment such as the 

motor, electronic speed control and battery, because they generate high 

temperatures. You may burn yourself seriously touching them.

•  Do not put fingers or any objects inside rotating and moving parts, as this 

may cause damage or serious injury.

•  Always turn on your transmitter before you turn on the receiver in the car. 

Always turn off the receiver before turning your transmitter off.

•  Keep the wheels of the model off the ground when checking the 

operation of the radio equipment.

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 use with incompatible components or alter this product in any way outside of the instructions 

provided by Horizon Hobby, LLC. 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.

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 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 superficial injury.

Age Recommendation: Not for children under 14 years. This is not a toy.

WATER-RESISTANT VEHICLE WITH WATERPROOF  ELECTRONICS

Your new Horizon Hobby vehicle has been designed and built with a 

combination of waterproof and water-resistant components to allow 

you to operate the product in many “wet conditions,” including puddles, 

creeks, wet grass, snow and even rain.

While the entire vehicle is highly water-resistant, it is not completely 

waterproof and your vehicle should NOT be treated like a submarine. 

The various electronic components used in the vehicle, such as the 

Electronic Speed Control (ESC) and servo(s) are waterproof, however, 

most of the mechanical components are water-resistant and should not 

be submerged.

Metal parts, including the bearings, hinge pins, screws and nuts, as well 

as the contacts in the electrical cables, will be susceptible to corrosion if 

additional maintenance is not performed after running in wet conditions.  

To maximize the long-term performance of your vehicle and to keep 

the warranty intact, the procedures described in the “Wet Conditions 

Maintenance” section below must be performed regularly if you choose 

to run in wet conditions. If you are not willing to perform the additional 

care and maintenance required, then you should not operate the vehicle 

in those conditions.

CAUTION:

 Failure to exercise caution while using this product 

and complying with the following precautions could result in 

product malfunction and/or void the warranty.

General Precautions

•  Read through the wet conditions maintenance procedures and make sure 

that you have all the tools you will need to properly maintain your vehicle.

•  Not all batteries can be used in wet conditions. Consult the battery 

manufacturer before use. Do not use Li-Po batteries in wet conditions.

•  The included transmitter is not waterproof or water-resistant. If using 

a different transmitter than the one included, consult your transmitter's 

manual or the manufacturer before operation.

•  Never operate your transmitter or vehicle where lightning may be present.

•  Do not operate your vehicle where it could come in contact with salt 

water (ocean water or water on salt-covered roads), contaminated or 

polluted water. Salt water is very conductive and highly corrosive, so use 

caution.

•  Even minimal water contact can reduce the life of your motor if it has not 

been certified as water-resistant or waterproof. If the motor becomes 

excessively wet, apply very light throttle until the water is mostly 

removed from the motor. Running a wet motor at high speeds may rapidly 

damage the motor.

•  Driving in wet conditions can reduce the life of the motor. The additional 

resistance of operating in water causes excess strain. Alter the gear 

ratio by using a smaller pinion or larger spur gear. This will increase 

torque (and motor life) when running in mud, deeper puddles, or any wet 

conditions that will increase the load on the motor for an extended period 

of time.