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Important service notes
Your model can only be as good as the service you grant it!
After runs under wet conditions or after cleaning your model with water pay attention to the following:
After operating your model in the rain on asphalt, earth, sand, grass, also if the model is excessively wet after running through standing
puddles you must make sure that you clean your model immediately (not the next day !!).
Therefore the engine has to be disassembled and the clutch removed. The set screws as well as the clutch blocks have to be cleaned and
dried. Otherwise fretting corrosion may arise between fixing screws and clutch blocks which can damage the correct function of the clutch.
It has been helpful to lubricate the fixing screws slightly with some copper paste at the fitting diameter (do not use too much paste in order
to avoid that grease comes in touch with the clutch blocks). In case of heavy dirt the belt drive has to be dismounted, cleaned and dried,
too.
It is very important that you dry ALL BEARINGS of the model car. Then lubricate the bearings with bearing oil. Bearings with metal cover
disk can be oiled through repeated application of the oil on the cover disk with simultaneous rotating of the bearing. Repeat this until the
bearing runs easy and gentle. If you realize that the bearings don't run smooth and without any resistance, then replace them against new
ones.
In case of bearings with plastic sealing lip the lip can be lifted off carefully with a needle. Take care that you do not damage the lip. Now
the bearing can be refilled with grease or oiled. Then fix the sealing lip back to the bearing carefully. You will recognize the correct seating
of the lip if it clicks easily into place.
Basically all steel parts mounted in the model such as screws, driveshafts, carriers and gearwheels have to be treated with some rust pre-
ventive (for example WD 40) or similar rust proofing or maintenance oil in order to prevent a formation of rust.
After runs in grass it is absolutely necessary to follow the instructions below:
Dismount the engine housing B of the cylinder in order to remove the grass between the cylinder cooling fins. If you don't do so there is a
risk that the cylinder doesn't get sufficient cooling air. As the engine gets very hot this can cause a considerable power loss or even a
piston jamming. To make the cleaning procedure easier without disassembling the engine you can remove the guide rails on the engine
housing. Now it is possible to lift off the engine housing just through removing the three fixing screws. Check also the starter housing on
grass. Clean the air vents of the starter housing completely so that the engine gets sufficient cooling air again.
Disassemble, clean and lubricate the pull starter as soon as the rope doesn't draw back completely. The foam of the air filter should be
replaced by a new freshly oiled one.
Check the vehicle on smooth running through synchronous turning of both rear wheels. Dismount all wheels and square wheel drivers if the
wheels don't run smooth. Remove the residues of grass between square wheel drivers and upright bearings. If you wait too long you risk a
deformation of the bearing cover disk. This results inevitably in a malfunction of the bearings.
In the case of a 4-wheel vehicle we recommend to check the complete gearwheel drive on dirt and clean it.
Further service and adjustment notes:
- Do not tighten M4 or respectively M5 nuts of the damper mount, leave the damper 0.5mm clearance.
- Check all screws and tighten them if necessary after 2 hours driving time.
- Renew the gear belt of the 4-wheel models always after 20-25 hours.
Problem! Engine doesn't start.
Solution! Unscrew the spark plug and press the spark plug socket on the spark
plug. Hold the spark plug outside thread with bared flat tongs against the cylin-
der and start the engine with the rope. Now you should be able to see an ignition
spark clearly at the spark plug. If there is no ignition spark and the annular gap
has carbon residues, then remove these residues between insulator and housing
with a steel needle. Afterwards rinse the annular gap with FG Cleaning spray
and let it ventilate. Screw the spark plug back into the engine and start it. Finally
let the engine run at full speed only for a few seconds so the spark plug can
clean itself.
Attention! For the further use of the engine see to a correct carburetor adjust-
ment. Do not use an overrich mixture as this problem can occur again (see
instruction point 5, carburetor adjustment).
Problem! Engine has spark failures or rather no ignition spark.
Solution! Check the connection between spark plug and spark plug socket. The
plug socket must sit firm on the spark plug. If this is not the case, replace the
spark plug socket against a new one.
Problem! Increased and irregular no-load speed.
Solution! The engine has an irregular increased no-load speed. Further the car-
buretor can hardly or not be adjusted anymore. In this case check insulator and
carburetor gasket on their condition as well as the insulator on distortion and
replace defective parts if necessary.
FG Modellsport GmbH
Spanningerstr. 2
73650 Winterbach-Germany
Phone: +49 7181 9677-0
Fax: +49 7181 9677-20
info@fg-modellsport.de
www.fg-modellsport.de
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