Instruction manual
8
boost
TM
EN
Receiver
Motor
Steering Servo
Battery 7.2V
AM  Rx
ELECTRONIC SPEED CONTROL (ESC)
Note: When motor disconnected or damaged, beep may not 
be heard.
Note: Low voltage cutoff (LVC) will stop the vehicle when the 
battery gets low. The ESC will reset after approximately 10 seconds. 
The vehicle can then be driven slowly back to the driver for  
battery recharge.
ELECTRICAL LAYOUT
Note: For correct operation, Channels 1  
and 2 must be used as shown in wiring  
diagram. The motor can be disconnected 
from the ESC at the connectors in  
the wiring.
A
B
C
D
E
SETTING THE GEAR MESH
Gear mesh has already been set at the factory, and setting it is only 
necessary when changing motors or gears.
Note: You must remove the vehicle’s gear cover (A) to do this  
adjustment. 
Precautions
Never touch moving parts.•
Never disassemble while batteries installed.•
Always let parts cool before touching.•
Proper gear mesh (how gear teeth meet) is important to the perf-
ormance of the vehicle. When gear mesh is too loose, the spur gear 
could be damaged by the pinion gear of the motor. If the mesh is too 
tight, speed could be limited and the motor and ESC will overheat.
1. Loosen the two (2) motor screws.
2. Put a small piece of paper between the pinion and spur gears.
3. Push the gears together while tightening the motor screws.
4. Remove the paper and the gears should move a small amount.
5. Reinstall gear cover.
A
Part # Description
A
ECX1071 Motor 
B
DYN1050 Battery 7.2V
C
ECX1069 Steering Servo
D
ECX1068 Receiver
E
ECX1070 Electronic Speed Control 
(ESC)
Channel 1
Channel 2
AM Receiver Crystal (Rx)
LED LED Status Description LED Indication
Solid Green Forward
Solid Red  Reverse
Red LEDs flashing with beep 
Transmitter is not 
being received.
Red LEDs flashing twice 
with beeps 
Signal that Vehicle 
battery is low.
Red LEDs flashing three 
times with beeps
Motor is 
overloaded or 
temperature of 
ESC is high.
beep beep beep
beep beep beep beep beep beep
beep beepbeep beep beepbeep beep beepbeep










