O.S. Engines FS-30S - Manual (Page 9)

16
Close
Open
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).
Starting
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.
5 Setting the needle-valve
Set-screw
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 closed position
Fully opened position
Throttle
Open
Close
Fuel will flow from tank to
carburetor as propeller is
turned.
Close the air intake
by operating the
choke control.
(FS-40S)
Turn the propeller
four revolutions
while watching
fuel line.
Turn the propeller 3
to 4 turns counter-
clockwise smartly
by finger in the
direction of arrow.
Turn approx.
10 turns when the
engine is cold.
7 Priming
17
8 Hold model securely when starting
9 Setting the throttle
10 Heat glowplug
Starter
Assistant should hold the
model so that it cannot
move forward when the
engine starts.
Be careful not
to be hit by propeller!
Fully opened
position
Fully closed
position
Set at this Position.
Starting battery
Connect battery leads as shown
(polarity is immaterial.)
11 Apply electric starter
Assistant
Glowplug battery.
Place as far to the
rear as possible.