F
F
L
L
I
I
G
G
H
H
T
T
T
T
R
R
A
A
I
I
N
N
I
I
N
N
G
G
S
S
U
U
P
P
P
P
L
L
E
E
M
M
E
E
N
N
T
T
for SPORT
STAR
Light Sport Aircraft
Document No.: S2006FTSUS Revision: -
Date of Issue: 15/01/2006
Page:
64/130
14. Turn the key fully clockwise to the START position. As soon as the
engine starts, release the key and it should return to the BOTH
position. Do not leave the starter activated for longer than 10
seconds. Allow the starter to cool down for 2 minutes before re-
attempting to start the engine.
15. Immediately after the engine starts, visually check the oil pressure.
Within 10 seconds the oil pressure should reach 4.5 to 5.0 bars for
a cold engine. For very cold engines the oil pressure should reach
6.0 to 7.0 bars. If the oil pressure rises as high as 6.0 to 7.0 , then
the rpm should not be increased. In this case, keep the engine at
idle and allow it to warm up. Also, the rpm should not be increased
if the oil pressure is below 2.0 bars ( 30 psi ).
As the oil temperature warms up, the oil pressure decreases and
this allows for a higher rpm. If the oil pressure does not increase
within the 10 seconds, as mentioned before, then the engine must
be shut down. Failure for the oil pressure to rise means that the
engine is not being lubricated and can seize. One reason that the
oil pressure gauge may not indicate a rise within 10 seconds is that
the oil pressure sensor is faulty, however there are much more
serious mechanical problems which can cause the oil pressure
gauge to not indicate a rise. Such problems will have to be
inspected and the proper maintenance performed before the
engine can be started again.
The Rotax manufacturer recommends to check if the oil pressure
has risen within 10 seconds and to monitor the oil pressure.
Increase of the engine rpm is only permitted at steady rpm
readings above 2.0 bars (30 psi). During an engine start with low oil
temperatures, continue to monitor the oil pressure as the increased
resistance in the suction lines could cause another drop in oil
pressure.
Note: If the oil temperature rises more than 120 degrees Celsius
(e.g. during a prolonged climb), then it is not recommended to
suddenly reduce the power to idle because the lubrication will be
disrupted momentarily. (The oil is too thin). The oil pressure
regulator needs time to restart to operate. Therefore, the throttle
should be reduced gradually and not suddenly.
16. Deactivate the choke if it is still on.
