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6
S
-U
ET
A
DJUSTING THE IDLE SPEED MIX ADJUSTING SCREW
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Start the engine and adjust the main nozzle needle, as described above.
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Reduce the speed until the centrifugal clutch does not engage any more and that the wheels do not turn any more
when you lift the model off the ground.
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Let the engine cool down in idle speed for approximately 10 – 15 seconds.
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While you are holding the model with your hand, drive at full throttle once briefly and strongly.
Make sure not to touch moving parts!
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If the engine stalls as soon as you run at full throttle, then the idle speed mix is too lean.
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Enrich the mix by unscrewing the screw by 1/16 rotations while the engine is switched off.
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Restart the engine and repeat the procedure until the speed transition from idle speed to full throttle is effected
softly and spontaneously. A small delay in response is normal.
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If the engine smokes strongly during transition from idle speed to full throttle and sounds very rough,
then the mix is too rich.
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Make the mix leaner by screwing in the screw by 1/16 rotations while the engine is switched off.
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Restart the engine and repeat the procedure until the speed transition from idle speed to full throttle is effected
softly and spontaneously. A small delay in response is normal.
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Drive the engine as usual in order to get a feeling of how the engine reacts to load changes.
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Modify the setting until the performance characteristics correspond to your expectations.
A
DJUSTING THE IDLE SPEED ADJUSTING SCREW
The idle speed adjusting screw regulates the idle speed via the position of the slide carburetor (choke limit stop).
The bigger the carburetor outlet, the higher the speed.
Turn the screw clockwise in order to make the mix "leaner" (to reduce the proportion of fuel) and anticlockwise, if the mix
should be "richer".
Depending on fuel, glow plug used and environmental conditions, small modifications in the settings might be necessary.
6.5
I
NSTALLATION OF AN
The standard Rex-X Promo II is equipped with built-in RC system, receiver, steering servo and throttle/
brake servo. It is also equipped with a remote control transmitter. This top quality system allows you to
operate your model without any problem.
You might find the following installation instructions interesting if you already have an RC system and if
you wish to built-in the latter or if you must replace a defective component.
M
OUNTING THE STEERING SERVO AND THE STEERING LINKAGE
The functions „accelerate/brake" and „steering" are carried out by two servos via the respective linkages. The servos are
controlled by the signals of a two-channel remote control. The receiver with which the servos are connected is included in
the delivery of the remote control transmitter and is later installed in the vehicle.
The receiver battery supplies the receiver and at the same time the servos with the necessary operating voltage.
For the first trial use of the functional unit "remote control transmitter/receiver/servo", the components do
not have to be firmly built-in.
56
All manuals and user guides at all-guides.com
P
RC-S
YSTEM
(
,
IN REPLACEMENT
OPTIONAL
Operating manual 4WD Buggy Chassis Rex-X Promo II No. 23 50 00
)
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