When it is suspected that a vapor lock exists, the
procedures should be used:
Fuel selector ON, electric fuel booster
throttle opened
push mixture control to full rich and
leave there until fuel pressure builds up and cavitating sound
disappears,
then return
control
cut-off and proceed
with normal starting sequence.
If a solid vapor lock exists, the
engine primer is usually ineffective until the vapor lock
broken
by the method mentioned above."
If
pressure does not build up after 30
seconds
running, stop
engine and determine trouble.
Check Engine Driven Fuel
for proper pressure by turning off
auxiliary fuel
Initial warm up should be at 1000 to 1200 RPM.
Engine is warm enough for take off when the throttle can be opened
without backfiring or skipping.
,
Check magnetos at 2600
Drop off should not exceed 175 RPM on
either magneto and should be withfn 50
of each other.
Exercise pro eller at 2200 RPM. Pull control to decrease RPM, note
drop to 1275
50 RPM,
Cowl flaps should be open for all ground operation (pull handle out).
Avoid prolonged ground operation as it will cause overheating.
For further
on cold weather starting and engine operation,
consult the Lycoming Operator's Manual.
OPERATION
TAKE-OFF:
Prior to take-off, a check should be made to insure that;
1
Weight and Balance is
2
l
All occupants have properly secured the combination seat and
shoulder straps,
3
l
Stabilator
trim
tab set.
l
Flaps are extended
or less for take-off.
5
l
Cowl flap lever is pulled out to fully open cowl flaps.
6
l
Propeller control
pushed in for maximum
(3400
7
l
Fuel selector valve is
Parking brake control is *'OFF" position.
9
Auxiliary boost pump
6
Summary of Contents for HT-295
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