20
Turn the engine with starter box to draw fuel
into the engine.
Fuel
Deliver fuel into the carburetor.
Fuel tank side
Now connect glowplug battery lead to heat
the plug filament and start the engine.
Switch on the transmitter and make sure
that each linkage moves correctly.
approx 1mm
Set the throttle opening a little wider that the
factory setting by adjusting the Throttle Stop
Screw.
When the engines does not start or stops
right after started, try the followings.
When the engine starts, warm it up by
repeatedly increasing the rpm to medium
speed and back again to a fast idle with the
mixture set very rich, the glowplug
connected, and the driving wheels clear of
the ground. The rich mixture will provide
adequate lubrrication and cooling indicated
by profuse exhaust smoke.
Set the needle-valve approx. 3 turns open
from the fully closed position. Do not force
the needlevalve to turn beyond a lightly
closed position.
Metering needle and mixture control valve
are set at basic position. (Refer to P25.)
21
It is vitally important to set
the throttle at the correct
position before starting the
engine. If the engine is
allowed to run with the throttle
too far open under ''no load'' conditions (i.e.
with the driving wheels not in contact with the
ground) it will rapidly over-heat and may be
seriously damaged.
Attention:
Next, disconnect the glowplug battery and try
running the car on the track. If the engine
stalls, open the throttle fractionally, but try to
keep the engine running as rich as possible:
if it stops because of being excessively rich,
close the Needle-Valve 30˚ and try again.
Run the car on the track until one tank of fuel
has been consumed, then close the Needle-
Valve 30˚ and run the car for another full tank
of fuel. Repeat this procedure until approx. 2
liters of fuel have been consumed, during
which time the throttle may be opened for brief
bursts of increased power. If the engine stops
at medium speeds, close the Mixture Screw
45˚.
throttle trigger
20
Turn the engine with starter box to draw fuel
into the engine.
Fuel
Deliver fuel into the carburetor.
Fuel tank side
Now connect glowplug battery lead to heat
the plug filament and start the engine.
Switch on the transmitter and make sure
that each linkage moves correctly.
approx 1mm
Set the throttle opening a little wider that the
factory setting by adjusting the Throttle Stop
Screw.
When the engines does not start or stops
right after started, try the followings.
When the engine starts, warm it up by
repeatedly increasing the rpm to medium
speed and back again to a fast idle with the
mixture set very rich, the glowplug
connected, and the driving wheels clear of
the ground. The rich mixture will provide
adequate lubrrication and cooling indicated
by profuse exhaust smoke.
Set the needle-valve approx. 3 turns open
from the fully closed position. Do not force
the needlevalve to turn beyond a lightly
closed position.
Metering needle and mixture control valve
are set at basic position. (Refer to P25.)
21
It is vitally important to set
the throttle at the correct
position before starting the
engine. If the engine is
allowed to run with the throttle
too far open under ''no load'' conditions (i.e.
with the driving wheels not in contact with the
ground) it will rapidly over-heat and may be
seriously damaged.
Attention:
Next, disconnect the glowplug battery and try
running the car on the track. If the engine
stalls, open the throttle fractionally, but try to
keep the engine running as rich as possible:
if it stops because of being excessively rich,
close the Needle-Valve 30˚ and try again.
Run the car on the track until one tank of fuel
has been consumed, then close the Needle-
Valve 30˚ and run the car for another full tank
of fuel. Repeat this procedure until approx. 2
liters of fuel have been consumed, during
which time the throttle may be opened for brief
bursts of increased power. If the engine stops
at medium speeds, close the Mixture Screw
45˚.
throttle trigger
22
The position of the needle-valve
when starting the engine.
Close the needle-valve approx.
30˚ after running the vehicle for
one full tank of fuel.
Repeat this procedure several
times.
Needle
30˚
Note:
In the event of any major working parts
(e.g. piston/cylinder liner assembly) being
replaced or the fuel being changed,
especially to high nitro fuel, the complete
running-in should be repeated.
Warning!
Do not touch rotating parts, engine and si-
lencer when stopping the engine as they
become very hot, and contact with them
may result in a serious burn.
To stop the engine, close the throttle to idle
speed and shut it off completely with the trim
lever on the transmitter then cut off the fuel
supply by pinching the fuel delivery tube to
the carburetor.
How to stop the engine
Fuel
23
FINAL ADJUSTMENT
Throttle Stop
Screw
Needle Valve
Metering Needle
Open
Close
Close
Open
Needle Valve
Metering Needle
More fuel
Less fuel
More fuel
Less fuel
Run the vehicle (with throttle fully open) over
the longest available straight course, in order
to observe the model's speed. Next return
the car to the starting point, close the Needle-
Valve 15˚ and repeat the run, taking note of
the improvement in performance.
Continue with further runs, gradually
reducing the Needle-Valve setting and
aiming to achieve the highest straight-line
speed. Remember, however, that, if the
Needle-Valve is shut down too far, the
engine will overheat and, accompanied by
visibly diminished exhaust smoke, the model
will lose speed. At this point, throttle down
immediately, stop the vehicle and reopen the
Needle-Valve 45-90˚.
Final adjustment should be carried out only
after the running-in has been completed.