Saito FG-17, Owner'S Operating Instruction Manual

Page: 9 / 20

9
Starting the engine
The carburetor on the Saito engine comes with
the low-speed needle adjusted to a basic setting.
You will need to adjust the high-speed needle. The
standard carburetor settings are as follows: The
high-speed needle valve is set open counterclock-
wise from the fully closed position. The low-speed or
idle needle valve is set clockwise in from flush from
the throttle arm face (reference line). Please refer to
the diagrams.
FG-17 and FG-21
High-speed Needle
1-1/4 turn
Low-speed Needle 3-3/4 turn
Before you first start the engine, make sure the
spark plug is screwed in and tightened, and that
the plug socket cap is fitted in place and fastened
down properly. Properly position the ignition sensor
at the bottom of the engine crankcase. Install the
throttle servo at a distance of 8 to 12 inches from
the engine. The spark plug cable must not touch any
part of the model structure as vibration may damage
the shielded cable. If this is not practical, it will be
necessary to provide an insulation material for the
cable.
Wrap the ignition unit in foam rubber to protect
it from engine vibration. All components must be
protected from contact with engine fuel. Be sure
to use an ON/OFF switch to allow the ignition to be
turned off and on.
Throttle Valve
Thread into about 3 3/4 turns
(approx. 1.3mm from the reference plane)
Throttle Lever
Slow Needle
Reference Plane
(Flush to the lever)