O.S. Engines 12TR - Manual (Page 14)

approx 1mm
approx 0.3-0.5mm
The following procedure is suitable for these engines
when the O.S. T-1030 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.
DO NOT energize glowplug,
but apply electric starter to
draw fuel to carburettor.
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 10J caburettor
•
In case of the 10M caburettor
Set the throttle-stop screw so
that the minimum throttle
opening (idle setting) is
approximately 1.0mm.
•
Throttle Stop Screw
•
STARTING THE ENGINE & RUNNING-IN ('Breaking-in')
Set the throttle-stop screw so
that the minimum throttle
opening (idle setting) is
approximately 0.3-0.5mm.
It is vitally important to set the
throttle at the correct position
before attempting to start the
engine. If the engine is
allowed to run with the throttle
too far open under "no load"
conditions, it will rapidly
overheat and may be
seriously damaged.
Remember!
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