8 • REVO PLATINUM EDITION
THE TRX 3.3 RACING ENGINE
3.
Connect the glow igniter to the engine.
4.
Place the model on a starter box and engage
the starter. Watch for fuel moving through
the fuel line up to the carburetor. Watch
closely! The fuel moves very fast. If the fuel
doesn’t move through the line within 5
seconds, prime the engine by briefly (one
or two seconds) covering the exhaust outlet
with your finger until the fuel is just visible in
the carburetor fuel line.
Watch carefully! If
the engine is primed too long, it will flood with fuel and stop turning.
5.
Once fuel reaches the carburetor, the engine should quickly start and idle.
6
. Disconnect the glow igniter from the model.
7
. Proceed with the engine break-in.
8
. Do not rev your engine with no load (wheels off the ground).
If your engine doesn’t start, refer to the troubleshooting tips on www.
traxxas.com/support. If you still have problems, contact Traxxas Customer
Support at 1-888-TRAXXAS or support@traxxas.com.
Factory Needle Settings
If your factory preset carburetor adjustments
have been tampered with, use the following settings:
• Set the high-speed needle to 4 turns out
from closed.
• Set the low-speed needle so the screw
head (red in Fig. A) is flush (even) with the
end of the slide (yellow in Fig. A).
Always use the factory settings for initial
starting. Only use these settings when the
factory settings have been lost.
Break-in Checklist
Tank 1
1.
Drive the model with the
body off.
2.
Driving procedure:
Gently pull the throttle trigger to 1/4 throttle
over a 2-second count. Then gently apply the brake to stop
. Count
the two seconds out while accelerating: one thousand one, one
thousand two, and then stop. Operate the throttle trigger as smoothly
as you can.
Repeat this starting and stopping procedure until the
first tank of fuel is nearly empty.
3.
Look for thick blue smoke exiting the exhaust outlet. If there is
no smoke, richen the high-speed needle 1/4 turn, by turning the
needle counterclockwise.
4.
When the fuel tank is nearly empty, shut off the engine by pinching
the fuel line connected to the carburetor (use the installed clamp).
5.
Let the engine cool for 15 minutes.
Note
: If at any point the engine cuts out or stalls during gentle
acceleration, richen the high-speed needle 1/4 turn by turning the
needle counterclockwise.
Tank 2
1.
From tank 2 forward, Revo should be driven
with the body on.
2.
Driving procedure:
Gently pull the throttle trigger to 1/2 throttle
over a 2-second count. Then gently apply the brake to stop.
Count
the two seconds out while accelerating: one thousand one, one
thousand two, and then stop.
Repeat this starting and stopping
procedure until the second tank of fuel is nearly empty.
3.
When the fuel tank is nearly empty, shut off the engine and let it cool
for 15 minutes.
Tank 3
1.
Driving procedure:
Gently pull the throttle trigger to 1/2 throttle
over a 3-second count. Then gently apply the brake to stop.
Count
the three seconds out while accelerating: one thousand one, one
thousand two, one thousand three, and then stop.
Repeat this
starting and stopping procedure until the third tank of fuel is nearly
empty.
2.
As the engine loosens, the idle speed may increase and cause
the model to try to creep forward when stopped. Reduce the
idle speed by turning the idle adjustment on the carburetor
counterclockwise.
3.
When the fuel tank is nearly empty, shut off the engine and refuel.
From here on, you do not need to let the engine cool between tanks.
Tank 4
1.
Driving procedure:
Gently pull the throttle trigger to full throttle
over a 3-second count. Then gently apply the brake to stop.
Count
the three seconds out while accelerating: one thousand one, one
thousand two, one thousand three, and then stop.
Repeat this
starting and stopping procedure until the fourth tank of fuel is
nearly empty.
2.
Apply the throttle gradually! Your finger should not reach full throttle
until the end of the three-second count. Revo may try to shift into
second gear. If it does, reduce the throttle input. Do not let Revo shift
out of first gear.
3.
Keep your driving smooth and consistent.
4.
When the fuel tank is nearly empty, shut off the engine and refuel.
Tank 5
1.
Driving procedure:
Gently pull the throttle trigger to full throttle
over a 3-second count, hold for 2 more seconds, and then
gently apply the brake to stop.
Count the five seconds out while
accelerating.
Repeat this starting and stopping procedure until the
fifth tank of fuel is nearly empty.
2.
The model should now be shifting into second gear. If it is not, try
turning the high-speed needle clockwise 1/8 turn to lean the fuel
mixture slightly and test for shifting.
3.
When the fuel tank is nearly empty, shut off the engine and refuel.
Tank 6
STOP!
Clean your air filter before you proceed.
During the sixth tank of
fuel, the engine can be tuned for general performance use.
TANK
THROTTLE
TIME
COOL
BODY
NOTES
1
1/4
2 seconds
15 minutes
Off
Apply throttle gradually.
2
1/2
2 seconds
15 minutes
On
Apply throttle gradually.
3
1/2
3 seconds
-
On
Reduce idle speed if necessary.
4
Full
3 seconds
-
On
Do not allow shifting to high gear.
5
Full
5 seconds
-
On
Accelerate over 3 second count, hold for 2 seconds.
Low Speed
Needle Adjustment
Fig. A
5304 Manual Work.indd 8
3/12/08 7:47:27 PM
