Cessna Skyhawk 172N Pilot Operating Handbook page 237

Supplement POH
Reims/Cessna (F) 172 N&P
with TAE 125-02-114
PROCEDURES UP TO 5500ft AIRFIELD ELEVATION
STARTING ENGINE
WARNING:
(1) Electric Fuel Pump - ON
(2) Navigation Lights and Flashing Beacon - ON (as required).
(3) Thrust Lever - IDLE
(4) Area Aircraft / Propeller - CLEAR
(5) "Engine Master" - ON , wait until the Glow Control light
extinguishes
(6) Starter - ON, keep starter engaged until min. 500rpm
Release when engine starts, leave Thrust Lever in idle
CAUTION:
(7) Oil Pressure - CHECK
CAUTION:
(8) CED 125 Test Knob - PRESS (to delete Caution light)
(9) Ammeter - CHECK for positive charging current
(10) Voltmeter - CHECK for green range
(11) FADEC Backup Battery test
a) Alternator - OFF, engine must operate normally
b) Battery - OFF, for min. 10 seconds;
engine must operate normally, the red FADEC lamps
must not be illuminated
c) Battery - ON
d) Alternator - ON
WARNING:
Do not use ground power unit for engine
starts. It is not allowed to start up the engine
using external power. If starting the engine is
not possible using battery power, the condition
of the battery must be verified before flight.
Do not overheat the starter motor. Do not
operate the starter motor for more than 10
seconds. After operating the starter motor,
let it cool off for 20 seconds. After 6
attempts to start the engine, let the starter
cool off for half an hour.
If after 3 seconds the minimum oil pressure
of 1 bar is not indicated:
shut down the engine immediately!
It must be ensured that both battery and
alternator are ON!
If the guarded alternator switch is installed,
the switch guard muts be closed.
Page 4-7
Issue 2
Revision 7, Jan. 2018