F
F
L
L
I
I
G
G
H
H
T
T
T
T
R
R
A
A
I
I
N
N
I
I
N
N
G
G
S
S
U
U
P
P
P
P
L
L
E
E
M
M
E
E
N
N
T
T
for SPORT
STAR
Light Sport Aircraft
Document No.: S2006FTSUS Revision: -
Date of Issue: 15/01/2006
Page:
43/130
4.4.8 Engine
Controls
4.4.8.1 Throttle
Lever
The throttle includes a Vernier knob type control mechanism. For fine
throttle adjustments, such as those used for glide path control on final
approach or during taxi, the throttle can be increased/decreased by turning
the knob clockwise/counter-clockwise. This movement will allow for very
small throttle corrections. For coarse corrections such as those used for
increasing throttle to maximum for take off or overshoot, the button on the
end of the throttle is depressed (see photo) and the throttle pushed in as
required.
The throttle system is spring loaded to go to the maximum throttle open
position if the throttle cables fail. Therefore, as soon as the button is
depressed the throttle will tend to increase with only slight pressure. When
making a coarse throttle movement in this manner there will still be more
throttle travel available when you have pushed the throttle all the way in or
pulled it all the way out. The correct technique is to make the coarse
correction by pushing or pulling and then turn the Vernier knob to get the
last little bit of travel in the throttle. This is particularly important when
decreasing to idle because the engine will not go to the lowest idle position
if you just pull the throttle all the way out. The scew portion of the Vernier
control is made of plastic so do not use excessive force when turning it or
you may strip the threads.
A friction control knob is used to hold the throttle in position and is located
at the forward end of the throttle shaft at the instrument panel. Turn it
clockwise to increase friction, counter-clockwise to reduce friction.
