44
Starting the warm engine
• Open the choke valve (lever horizontal).
• Actuate the pump until the "gauge glass" is filled up completely with fuel
• Pull the cable pull starter through several times until the engine starts up
• If the engine does not start after at most 10 attempts, proceed as described above or try to locate the error in the troubleshooting table!
Switching off the engine
Press the ignition timer (the red switch at the engine block) until the engine
stops running.
To better access the button with the car body attached, we recommend
cutting out a recess in the car body.
Use a car body drill for this purpose to pre-drill the hole. To enlarge the
recess, cut out the hole with car body shears.
m) Run-in Instructions for the Engine
Small manufacturing tolerances cannot be avoided during the production of the engine, just like small irregularities and unevenness of the material. Thermal and
mechanical strain aggravate this. This is why you have to observe a certain break-in period when commissioning the new engine. During the run-in time, engine
parts are tuned to one another, whereby maximal capacity is reached and premature wear is prevented.
With the first two or three tank fillings, let the engine run alternating between longer idle speeds (approx. 15 sec.) and short full throttle (approx. 3
sec., gradually increasing to 10 sec.). In this phase, do not let the engine run for an extended period of time without load at maximum. Also do not
drive under full load for an extended period of time.
Adjusting the carburettor
Depending on the mix that is used, the spark plug, the muffler and the environmental conditions such as air pressure and air humidity, small modifications in the
setting of the carburettor might be necessary. Fine tuning of idle motion and full throttle can only be carried out with a well run-in engine. In the basic setting of
the carburettor, the mix is set a little richer. This is indicated by the strong white smoke emission from the exhaust pipe.
Setting the idle speed mix adjusting screw
• Run the engine to bring it to operating temperature.
• If the engine takes fuel with difficulty, the idle mix is too thin.
• Turn the idle mix adjusting screw anticlockwise (towards the left) to make the mix "richer".
• Therefore, correct the setting step by step by turning the idle speed mix adjustment screw approx. 1/8th of a turn left each.
• If the engine only takes fuel spluttering and with a strong production of smoke, then the mix is too rich.
• Turning the screw clockwise (towards the right) makes the mix leaner (the fuel proportion is reduced)
• In this case, correct the setting of the idle mix adjusting screw stepwise by approx. 1/8 of a turn respectively towards the right.
Setting the main nozzle needle
• Lift the actuated axis from the bottom and drive the engine at operating state temperature at full throttle for a short time.
• Now you can correct the setting of the full throttle mix at the main nozzle needle in steps of 1/8 rotations
• Turn the main nozzle needle clockwise if the mix should be “thinner”.
• Turn it anticlockwise to make the mix “richer” (to increase the proportion of fuel).
• For a long engine life, you should prefer a slightly rich carburettor adjustment, but leave the setting thin enough for the engine to run perfectly.
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