S
ECTION
4: N
ORMAL
P
ROCEDURES
C
IRRUS
D
ESIGN
N
ORMAL
P
ROCEDURES
SR20
4-10
P/N 11934-005
Engine Start
If the engine is warm, no priming is required. For the first start of the
day and in cold conditions, prime will be necessary.
Weak intermittent firing followed by puffs of black smoke from the
exhaust stack indicates over-priming or flooding. Excess fuel can be
cleared from the combustion chambers by the following procedure:
•
Turn fuel pump off.
•
Allow fuel to drain from intake tubes.
•
Set the mixture control to CUTOFF and the power lever to 1/2 open
position.
•
Crank the engine through several revolutions with the starter.
•
When the engine starts, release ignition switch, smoothly advance
the mixture control to RICH, and promptly retard the power lever.
If the engine is under-primed, especially with a cold soaked engine, it
will not fire, and additional priming will be necessary. As soon as the
cylinders begin to fire, open the power lever slightly to keep it running.
Refer to
in this section or additional
information regarding cold weather operations.
• WARNING •
If airplane will be started using external power, keep all personnel and
power unit cables well clear of the propeller rotation plane.
• CAUTION •
Alternators should be left OFF during engine starting to avoid
high electrical loads.
After starting, if the oil gauge does not begin to show pressure
within 10 seconds, shut down engine and investigate cause. Lack
of oil pressure indicates loss of lubrication, which can cause severe
engine damage.
(Continued on next page)
Reissue A