ROBBE RCGF 45 Betriebsanleitung Seite 4

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- Fill the fueltank.
- Use the radio control system to set the throttle to idle.
- Close the choke flap manually.
- Switch on the ignition system.
- Swing the propeller strongly by hand.
- Continue until the engine fires, then open the choke flap.
- Now give the propeller a really strong swing, and the engi-
ne should start and run.
- Slowly open the throttle once the engine is running.
Note: take care never to suck in too much fuel, as the engine
will not run if flooded. If too much fuel enters the cylinder,
causing the engine to be difficult to turn over, unscrew and
remove the sparkplug, then turn the propeller several times to
eject the excess fuel from the cylinder. Note that this action
will cause petrol to squirt out of the sparkplug opening, so
keep your face and hands away from the cylinder head. Dry
the sparkplug before re-fitting it.
The engine must initially be set to run "rich" at full-throttle. At
first it is better to unscrew the main needle slightly too far: this
will allow the engine to receive more fuel and therefore more
oil, and will avoid premature wear during the running-in peri-
od.
After the engine has consumed several tankfuls of fuel, the
propeller speed can be gradually increased by screwing the
main needle in slowly. If the speed starts to decline when you
do this, the mixture is too lean: immediately unscrew the main
needle again slightly.
Carburettor settings
Basic setting: close both needles fully.
Idle needle: open by 1½ full turns.
Main needle: open by 1¾ full turns.
Note: any changes to the needle valve settings should always
be made in small increments.
When you advance the throttle, the engine should increase
speed steadily without stuttering or tending to stop. If the
engine stops when you open the throttle, open (unscrew) the
idle needle slightly. If it stutters and is reluctant to pick up
speed, close (screw in) the idle needle slightly.
© robbe Modellsport
Operating Instructions
RCGF 45 two-stroke petrol engine
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Once the engine is run-in, slowly increase the full-throttle
speed by gradually closing (screwing in) the main needle.
When set up correctly, the engine should run smoothly at idle,
pick up speed steadily over the mid-range, and achieve maxi-
mum speed at full-throttle.
The idle stop-screw should be adjusted to the point where the
engine shows no tendency to stop when the throttle servo is
at the idle end-point.
Alternatively you may prefer to set the stop-screw so that the
engine can be cut from the transmitter when the throttle trim
is pulled fully back.
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General notes on running the engine
- Every time you intend starting the engine, check that it is
still securely attached to the model, that the propeller is
firmly seated, and that the fuel lines are correctly connec-
ted.
- Check that the exhaust manifold and silencer are securely
mounted.
- Check occasionally that the crankcase screws are still tight,
and re-tighten them if necessary.
- Ensure that clean air is available for the engine to "breathe".
- The ignition battery should be freshly charged for each
day's flying, as current is drawn from it constantly when the
engine is running.
- Switch off the ignition after the engine has stopped.
Choke position for starting:
- Cold engine: close the choke for starting, as described
above.
- Warm engine: leave choke open.
- If the model crashes, and dirt might have entered the engi-
ne, dismantle the engine and clean it thoroughly before tur-
ning the crankshaft.
- From time to time check the sparkplug electrode gap; it
should be 0.3 to 0.5 mm. The gap can be measured using
feeler gauges, which are available from any car accessory
shop.
- If you have to fit a new sparkplug, make sure it has the
same heat value.
- If you have to clean or otherwise maintain the engine or car-
burettor, you will need to re-adjust the carburettor settings.
Replacement parts
When ordering replacement parts always state the exact
Order No. as well as a description of the part.
31380006 Yak 54 ignition unit
31380007 Yak 54 carburettor
31380008 Yak 54 cylinder and gaskets
31380009 Yak 54 crankcase, complete
31380010 Yak 54 exhaust manifold
31380011 Yak 54 silencer
robbe Modellsport GmbH & Co. KG
We reserve the right to alter technical specifications
robbe Modellsport GmbH & Co. KG hereby declares that this product satisfies the funda-
mental requirements and other relevant regulations contained in the fundamental require-
ments and other relevant regulations of the appropriate CE directives. The original
Conformity Declaration can be viewed on the Internet under www.robbe.com: click on the
logo button marked "Conform" which is included in each device description.
This symbol means that you must dispose of electrical and electronic equip-
ment separately from the general household waste when it reaches the end of
its useful life.
Take your charger to your local waste collection point or recycling centre. This
applies to all countries of the European Union, and to other European coun-
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tries with a separate waste collection system.