Serial Number 1646
Date of Issue: 23 June 2017
Revision - Original
26
Starting the engine
Apply parking brake
Main switch on
Fuel selector on BOTH
Choke - activate only when starting cold engine; close gradually when engine warms up
Throttle - idle setting when starting cold engine; up to 10% throttle when engine is warm
Electric AUX fuel pump turn on
Check area in front and around propeller, declare intention to start loudly!
Switch both ignition switches on.
Start the engine.
Only press starter button for 10 seconds or less; if engine does not start, wait 2 minutes before starting
attempts.
As soon as engine starts, set it to 2000–2300 rpm, BUT NO HIGHER THAN 2500 RPM IF THE ENGINE
OIL TEMPERATURE IS LESS THAN 120
O
F. It should run without vibrations
Check oil pressure – it must reach normal operating value within 10 seconds
Turn AUX pump off to determine that the engine pump is operating properly
Engine test
Always start to warm up the engine at approx. 2000rpm for approx. 2 minutes. Do not exceed 2500rpm
until cylinder head and oil temperature reaches 122deg F minimum.
Test maximum rpm; check transition from minimum to maximum rpm and back.
Check function of both ignition circuits by switching off the first and then the second circuit at 4000rpm. Max.
permitted drop of rpm when switching is 300rpm, with no more than 150 rpm differential between sides.
Fuel pressure must not drop below 2,9 psi t hr o u g ho ut the test (with secondary fuel pump switched off);
oil pressure must not drop below 11.6 psi
Note: it is recommended to have a fire extinguisher available.
DANGER! Nobody is allowed to be present in the vicinity, especially not in the
Propeller rotation plane.
Do not perform the engine test with the aircraft placed on the loose ground. Loose material, if drawn in by the
propeller, may cause personal injury and/or damage to propeller.
Mandatory actions before take-off – on runway holding point
Check free movement and function of all controls
Check fuel level, valve position
Check instruments, adjust altimeter if necessary.
Check engine-operating values (temperatures and pressures).
Check the cabin – tighten seat harnesses, unlock rescue system, close door, remove/secure loose objects.
Apply flaps – 15° position
Center the trim
