2
a
Check all
controfs
for
freedom
af
mavement
and proper direction.
3
l
Pnsure
that all
cargo is secured and that the load is properly
located,
4
0
Check
positim
of electrical and ignition switches.
5
l
Open cowl flaps.
ENGINE
STARTING.
The following starting procedure is taken from the
Lycoming Operator's Manual,
A copy of the Lycoming
rfanual
is furnished
with each airplane and is considered
a
part of this manual,
Lock
the wheels by efther wheel brakes
OT
chocks,
I
Set the propeller control lever all the way forward in INCREASE
RPM
position.
Be sure fuel valve is
ttUNtt.
set throttle
to
l/4
open position*
Place mixture
control
in the
"Idle Cut-off" position (Full out).
Turn on auxiliary fuel pump and check pressure.
Turn ignition switch to extreme right and push (this energizes
starter)*
NOTE
On aircraft with control lock pin
located
on pilot's
control wheel shaft, it is necessary to remove the pin
before attempting to start the engine, The aircraft
is
designed
so
the
starter
circuit
is inoperative with the
control
lockpin
installed.
The magneto circuits are not
involved in
any
way.
When the engine begins to fire,
immediately put mixture control in
Full Rich position (full in) and allow ignition switch to return to
"both'" mag position. CAUTION
-
If engine fails to start immediately,
return mixture control to Idle Cut-off position.
Failure
to
do so
will
create
an excessive amount of fuel in the carburetor air scoop
constituting a fire hazard.
"Vapor locking is not a
common
occurrence on Lycoming
Go-480
engines,
However
9
under certain circumstances it can occur,
i,e,
when runway
and ramp temperatures exceed
lOOoF
particularly on sunny days and at
airfields of high elevation where temperatures exceed
80*F,
During
these conditions vapor locking can occur after a hot engine has been
shut-down and a start is attempted within a period of up to one hour
after initial shut-down.
Vapor lock symptoms are; zero fuel pressure
with the electric fuel booster pump on, and by hearing an unusual
sound
in
the booster pump which
indicates it is cavitating rather
than
pumping.
5
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General