Using The Ez-Start; Protection Mode; Use A Strong Starter Battery; Shutting Off The Engine - Traxxas Revo 3.3 5309 Owner's Manual

Using the EZ-Start

Your EZ-Start controller plugs into a 4-prong receptacle in the center of
the bed on your Revo. When the red button on the controller is pressed,
the EZ-Start motor begins to spin the engine and power from the control
unit heats the glow plug. Assuming all settings and preparations are
correct, the engine should start almost immediately.
Each of the two status indicator LEDs on
the hand-held control unit, the Motor
LED and the Glow Plug LED, should
light green while starting. If either LED
fails to light while starting, there is a
fault indicated with that function:
If the Glow Plug LED fails to light,
the glow plug may be bad, or the
glow plug wire may be damaged
or disconnected.
If the Motor LED fails to light and
the starter fails to operate, then the
EZ-Start is in protection mode.

Protection Mode

The EZ-Start uses Smart Start ™ technology to monitor the condition of
the system and detect failures. The controller monitors the load being
placed on the EZ-Start motor. If the load becomes excessive, the system
shuts off power to the motor to prevent costly damage to the motor and
the controller. This may occur, for example, if the engine floods with fuel
during starting. The starter spins at first but when excessive fuel in the
combustion chamber begins to lock up the engine, the starter motor
slows under the heavier load. This causes the protection circuit to shut
The TRX 3.3 Racing Engine
off the power to the motor. Allow at least 3 minutes for the starter motor
to cool and the circuit to automatically reset before continuing. Use the
time to find and eliminate the condition that caused the excessive load
on the starter motor.

Use a Strong Starter Battery

A weak starter battery, or one that has not been fully charged, may not
deliver enough power to crank the engine over at the appropriate rpm
to keep the piston from sticking at top dead center (TDC). A new engine
will typically have a tight fit between the piston and the top of the
sleeve. This is a tapered fit, and a tight piston sleeve fit on initial startup
is desirable for those who want the best-performing engine. Make sure
you are using a good quality battery pack that is fully charged (new
batteries usually require several charge cycles to reach peak voltage and
full capacity). This is especially important with a new engine that needs
to be broken in. If the engine sticks at TDC, see page 41 for instructions
on freeing the engine.

Shutting Off The Engine

Turning off the switch for the radio will
not shut off the engine. To shut off the
engine, use the shut-off clamp on the fuel
line. Squeeze the clamp closed to shut off
the fuel supply to the engine. Don't forget
to release it when you restart the engine.
Avoid shutting off the engine by placing your finger over the exhaust
outlet, especially if you are through driving for the day. This will leave
more unburned fuel in the engine that could lead to harmful corrosion.
Always be careful not to touch the exhaust pipe after running, it can
become very hot.
When the EZ-Start
controller is in protection
mode, wait at least three
minutes before attempting
to start the engine, to give
the starter motor time
to cool.
It's normal for your EZ-Start
controller to become warm
after repeated use.
Revo 3.3 • 27