22 • SLAYER PRO 4X4
Installing the EZ-Start Battery
1. Press the tab in the end of the battery
compartment door to open (A).
2. Plug a fully charged 7.2-volt
battery pack into the
connector inside (B).
3. Twist the battery two or
three times to twirl the
battery plug wires. This
helps hold the wire and
battery in place when the
battery is installed in the
compartment (C).
4. Install the battery into the
compartment and press the wires securely into place.
5. Snap the battery compartment door back on and lock the
end tab (D).
Using the EZ-Start
Your EZ-Start controller plugs into a 4-prong receptacle in the center of
the model. 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 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 35 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.
Using Other Chargers
Another convenient option
for charging the included
battery is an AC peak-
detecting charger that plugs
directly into an AC wall outlet,
such as the EZ-Peak Plus, Part
#2933. It contains special
peak-detection circuitry
that automatically shuts the
charger off when the battery
is fully charged.
Caution
: Never use a
15-minute timed charger to
recharge your model’s battery
packs. Overcharging may
result, causing damage to the
battery packs.
A
B
C
D
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
Motor
Glow Plug
When the EZ-Start controller
is in protection mode, wait
at least 3 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.
THE TRX 3.3 RACING ENGINE
7,12
