Do not needlessly disassemble your
Saito engine. Only qualified individ-
uals should perform engine repairs.
Damage due to improper disassembly
will not be covered under warranty.
It is important to be able to identify the
parts of your Saito engine. In the
back of this manual you will find an
exploded view of Saito twin-cylinder
gasoline engines, as well as a chart
which includes part numbers and
descriptions. This will assist you in
easily and rapidly identifying the
respective parts of your Saito engine.
1. Spark Plug Leads (Mesh-covered
high-tension cord) Attach the spark
plug leads to the spark plugs. These
are both identical and can be used
on either side of the engine.
2. Sensor cord (Red, Black and white
cord) This is connected to the cord
from the already attached ignition
sensor unit mounted to the output of
the crankcase. This connector has
a specific orientation, pay attention
when connecting these two cords.
3. Battery cord (Black and red
cord with a universal servo style
female connector). Attach a 6–9
volt battery of at least 1000mAh
capacity. 2S Li-Po batteries are
the recommended power source
I G N I T I O N S Y S T E M
because of their light weight and
durability. The ignition amp draw
is approximately 790mAh at full
The gas twin engines are equipped
with a suitable carburetor developed in
cooperation with Walbro for exclusive
use in the Saito gasoline engine it is
mounted to. This carburetor has a
negative-pressure type fuel pump so
your tank can be mounted in most any
convenient position relatively close to
the engine. The negative pressure to
actuate the pump is drawn internally
from the intake manifold so no external
tubes or connections are required.
If the fuel remains in carburetor
after the days flying ends, the rubber
components of the carburetor will
tend to degrade rather quickly. When
stopping the engine after the last
flight of the day cut the fuel supply
to the carb and run the engine until
the carburetor is dry. (The parts of
the carburetor made of rubber are
considered consumables and are not
covered under the warranty of the
The included gasoline carburetor is
elaborate and delicate. Do not attempt
to disassemble the carburetor yourself.
If the performance of the carburetor
indicates that service is required send it
to our qualified service technicians.