Searey LSA – Pilot’s Operating Handbook Version 5.0, Revision 8
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The Searey is powered by a horizontally-opposed, four cylinder, liquid
cooled heads, air-cooled cylinders, carbureted engine with dry sump
forced lubrication. The engine is fitted with an electric starter, AC
generator and a mechanical fuel pump. The propeller is driven via a
reduction gearbox with integrated shock absorber. Fuel mixture is
automatic and is controlled by an altitude-compensating diaphragm in the
carburetor.
7.5.1 ENGINE CONTROLS
Engine power is controlled by a throttle handle that is located between the
two occupant seats. There are two cables attached to the throttle handle
with both cables being linked to the two carburetors. The throttle
operates in a conventional manner with the throttle being fully open when
the handle is in the full forward position and in the full aft position the
throttle is closed.
Rotax 914UL engine is turbo charged and used in the Elite configuration of
Searey LSA. If your aircraft is equipped with 914 UL engine, a Turbo
Control Unit (TCU) switch is located overhead with a switch guard on it.
TCU is automatic and in normal operation, pilot would not have to do
anything with this switch. Only in a runaway boost condition, should pilot
utilize this switch. Pilots are encouraged to read Rotax 914 Operator’s
Manual supplied with the aircraft for further understanding of TCU and its
function.
7.5.2 ENGINE INSTRUMENTS
Engine operation is monitored by the following instruments:
1 x Oil Pressure gauge
1 x Oil Temperature gauge
2 x Cylinder Head Temp gauge
1 x Ammeter
1 x Voltmeter
1 x Tachometer
Manifold pressure on the 914 engine
7.5.3 ENGINE OIL
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