AIRCRAFT
SA 160
AIRCRAFTA I R C R A F T
Symphony
7-18
SECTION 7
DESCR. & OPERATION
Feb 25, 2005
CAUTION !
Formaintenance and repairs the engine cowling consistsof an upper and
lowerhalffiberglassshellthatcanberemoved.
In order to obtain maximum efficiency and time between overhauls, the
pilot should familiarize himself and follow the procedures
recommendedintheLycoming Operator's Manual.
(a) Engine Controls
Engine controls include a throttle, a mixture control and a carburetor
heat control. The throttle, mixture, and carburetor heat controls are
placed at the lower center of the instrument panel (See Fig. 7-2). The
throttle controls engine power. The throttle is fully open in the full
forward positionandclosed in the fully aft position. The throttle has a
friction lock. Rotating the round knurled knob at the base of the
throttle clockwise increases the friction, and counterclockwise
decreases the friction.The fuel / air ratio is adjusted by the mixture
control. The RICH position is full forward, and full aft is the IDLE
CUT-OFF position. For small adjustments, the control may be moved
forward by rotating the knob clockwise and aft by rotating the knob
counterclockwise. For larger adjustments, the knob may be moved
forward or aft by depressing the lock button in the end of control.
Do not force the pressure on the Mixture control and do not
turn the knurled knob when the mixture control is already
fully forward (RICH) as this may cause damage to the
mixturecontrolmechanism.
The carburetor heat is activated by pulling aft on the “Carburetor
Heat” control knob. This will supply the carburetor with
unfiltered preheated air.
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