SERVICE LETTER
#19A
DATE:
September 3, 1991 revised
May 9, 1994
SUBJECT:
Oil injection systems
APPLICABILITY:
All Rotax 2 stroke engines
COMPLIANCE:
Recommended
FROM:
SkyStar Aircraft, Engineering Department
The
purpose of this letter is to help you prevent the possibility of oil
starvation with your Rotax 582 LC engine.
In the past we have uncovered some possibilities for oil system
problems, and we are sharing them with you so that you can avoid similar
situations.
Make
sure that your in-line oil filter is of the proper type, and secured against
engine vibration. The proper filter has 1/4" hose fittings on both sides,
while an older style had a smaller fitting on one side that increased the
likelihood of the hose not being properly secured. Make sure that the filter is as close to the tank as possible
to minimize the effects of engine vibration.
Before
your initial engine run, and at any point when the oil lines have been opened
for any reason, purge the air from the oil pump using the air bleed fitting.
If the oil pump receives a bubble of air, it can lose its prime and
stop delivering oil to the engine. Observe
the small oil delivery tubes to be full of oil, and monitor the level of the
oil in the tank to be sure that the engine is using oil.
If you suspect that the
oil system may not be able to immediately deliver oil to the engine (such as
after maintenance), pre-mix the
fuel at a ratio of 100:1 with pre-mix 2-stroke oil to insure proper engine
lubrication. This is especially
important for the initial engine run and break-in.
Check
often that the cable actuation system for the oil injection pump is secure and
operating normally. During pre-flight, make
a point to inspect the entire injection system including the cable, filter,
lines and clamps, and tank level. We
offer as an option an oil filter access door that can be installed in the top
cowling to make pre-flight inspections of the oil system easier.
In
summary, a well installed and maintained oil injection system will offer long
and trouble free service. Take the
time to attend to the details of the installation that will insure your engine
is properly lubricated.
If
you have any questions about your installation, don't hesitate to contact our
Customer Service Department at 208-454-1443.