O.S. Engines 21XZ-M - Manual (Page 11)

20
The following procedure is suitable when a
fuel containing 30% nitro-methane is used.
Fill the tank completely with fuel.
Temporarily remove the glowplug to check
that it glows bright red when energized.
Glow Plug Igniter
Pliers
Element glows when energized.
Replace the plug when the
element does not glow or is
burnt out.
Turn the needle-valve clockwise slowly until
it stops. This is the fully closed position.
Do not force to turn further.
Open the Needle-Valve 1.5 turns from the
fully closed position.
Open
Close
Needle Valve
Swith on the transmitter and make sure that
each linkage moves correctly.
21
Throttle Trim
Raise the throttle trim 2 or 3 clicks on the
transmitter for easier starting.
Turn the engine with an electric starter or
recoil starter to draw fuel into the engine.
Fuel
Deliver fuel into the carburetor.
Fuel tank side
Now connect glowplug battery lead to heat
the plug filament and start the engine.
Start the engine using an electric starter
making sure the engine rotation direction is
correct (counter-clockwise seen from the
crankshaft end).
When the engine starts, first repeat low
speed running and medium speed running
by raising and lowering throttle stick on the
transmitter to warm up the engine.
Aviod high speed running.