O.S. engine FS-30S Owner's Instruction Manual page 9

Starting
4 Opening and closing of the needle-valve
Turn needle-valve clockwise to close (for
leaner mixture).
Turn needle-valve counter-clockwise to
open (for richer mixture).
5 Setting the needle-valve
Turn the needle-valve in the direction of
arrow slowly, without forcing, until it
stops. The position where the needle-valve
stops is the fully closed position. It may be
convenient to remember the position of the
mark or set-screw at this time.
Turn the needle-valve in the direction
of arrow from the closed position.
FS-30S (2 to 2-1/2 turns)
FS-40S (2-1/2 to 3 turns)
6 Open the throttle fully
Fully opened position
Fully closed position
8 Hold model securely when starting
Glowplug battery.
Place as far to the
rear as possible.
Starter
Be careful not
to be hit by propeller!
9 Setting the throttle
Fully closed
position
Set at this Position.
7 Priming
Fuel will flow from tank to
carburetor as propeller is
turned.
Close
Open
Set-screw
Turn the propeller 3
to 4 turns counter-
clockwise
by finger in the
direction of arrow.
Turn approx.
10 turns when the
Close
engine is cold.
Open
Throttle
16
10
Assistant should hold the
model so that it cannot
move forward when the
engine starts.
Assistant
11
Fully opened
position
17
Turn the propeller
four revolutions
while watching
fuel line.
smartly
Heat glowplug
Starting battery
Connect battery leads as shown
(polarity is immaterial.)
Apply electric starter
Close the air intake
by operating the
choke control.
(FS-40S)