Automobile Parts User Manual
approx 1mm
Approx. 0.3-0.5mm
The following procedure is suitable for these engines 
when the O.S. T-1020 tuned silencer and a fuel 
containing up to 30% nitromethane are used.
Use the same fuel as is to be employed for all initial 
running and containing NOT LESS THAN 18% 
lubricant. 
Temporarily remove the glowplug to check that it 
glows bright red when energized.
Open the Needle-Valve 2 turns from the fully closed 
position.
Switch on the transmitter and 
receiver and set the throttle 
very slightly opened from the 
idling position.
DO NOT energize glowplug, 
but apply electric starter to 
draw fuel to carburettor.
Now connect glowplug battery 
lead to heat the plug filament 
and start the engine.
Re-check the needle-valve 
and throttle settings. Turn 
the needle-valve clockwise 
slowly and gently until it 
stops. This is the fully 
closed position.Do not use 
force to turn the needle-valve beyond this point.
•
•
•
•
Open
Close
Needle Valve
◆
In case of the 10C caburettor
•
◆
In case of the 10E-R caburettor
Set the throttle-stop screw so 
that the minimum throttle 
opening (idle setting) is 
approximately 1.0mm.
•
Throttle Stop Screw
•
Rotating
Direction
Front
Rear
•
STARTING THE ENGINE & RUNNING-IN ('Breaking-in')
■
Starter Handle
In case of the 12CV-X
Push the choke button on 
the fuel tank several times 
to deliver the fuel to the 
carburetor. (Do not over-
prime or the recoil starter 
cannot be pulled.)
Pull the starter handle 
briskly straight out several 
times to start the engine.
•
•
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