O.S. Engines 12CV-X - Manual (Page 15)

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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