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Virus SW 121
Pilot Operating Handbook
POH-121-00-40-001
PAGE REV. 0
SECTION
8
HANDLING AND SERVICING
CAUTION:
Make sure the gascolator sampling outlet has been closed and is
not leaking fuel before flight.
8.6
GROUND HANDLING
8.6.1
APPLICATION OF EXTERNAL POWER
No dedicated ground service receptacle is available, however it is possible
to connect a battery-booster or external power to battery plus terminal and
the exhaust.
G!
If external power will be used to start engine, keep yourself, others, and
power unit cables well clear of the propeller rotation plane.
CAUTION:
Do not use external power to start the airplane with a ‘dead’ bat-
tery or to charge a dead or weak battery in the airplane. The battery must be
removed from the airplane and battery maintenance performed with appro-
priate procedures.
To apply external power to the airplane:
1
Ensure that external power source is regulated to 14 VDC.
2
Master switch OFF, Avionics switch OFF.
3
Connect (+) lead of external power source to (+) terminal of the bat-
tery. Connect (-) lead of external power source to the exhaust.
4
Master switch to ON. 14 VDC from the external power unit will ener-
gize the main distribution and essential distribution buses.
The airplane may now be started or electrical equipment operated.
5
If avionics are required, set AVIONICS power switch ON.
CAUTION:
If maintenance on avionics systems is to be performed, it is rec-
ommended that external power be used. It is not recommended to start or
crank the engine with the AVIONICS power switch ‘on.’
To remove external power from airplane:
1
Carefully remove cables from battery terminal and exhaust.
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