O.S. Engines 15LD-X - Manual (Page 13)

The somewhat violent changes of vehicle attitude
that occur in off-road running, combined with the
fact that, in buggy type cars, the fuel tank is often
located some distance from the carburetor, means
that fuel 'head' at the carburetor can vary and upset
running.Therefore,it is recommended that a muffler
pressurized fuel feed system be used.
Never run your vehicle without fitting the air cleaner.
Dust and dirt that may otherwise be drawn into the
engine will rapidly shorten its life.
PRESSURIZED FUEL SYSTEM
•
•
Silencer
Fuel Tank
Silicone tube
Connect suitable length of
Silicone tubing between fuel
tank and silencer.
STARTING THE ENGINE & RUNNING-IN ('Breaking-in')
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.
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
Switch on the transmitter and
receiver and set the throttle
very slightly opened from the
idling position.
•
Approx.
0.3-0.5mm
13