9.Engine Rotax 912/912S maintenance
There are most information and derection needed for the operating of the engine Rotax 912/912S
in the handbook for using the engine which was delivered to you with your airplane. Keep the
engine in cleanness and watch out incidental leakage of oil which can signalize the necessity of
expert maintenance of the engine. We introduce only the basic tasks for the maintenance.
9.1. Oil refill
-exchange the filter when changing the oil
-first oil exchange is made after first 25 flight hours, The oil refill of the reductor is united with
the oil refill of the engine
-the oil exchange is made after every 100 flight hours or once a year
-the amount of the oil refill for exchanging is 3 liters
The handbook for maintenance of engine Rotax 912/914 requires after each exchange of the oil
to cut the old filter before its liquidation so the flashes can not arise. The filter should be taken
out, unfolded and looked through, if it does not contain any metallic splints, scraps of tamping,
and etc. which could be a presage of the engine failure.
We recommend to let this work have done by an expert technician.
9.2.Sparking plugs
The revision and cleaning of the sparking plugs should be done every 100 hours of operating and
when the starting of engine is worse. The distance of electrodes is 0.7mm.
The state of the sparking plugs at the revision can signalize worse state of the engine or its work
in not convenient environment / temperature, fouling of the air filter, untightness of valves /.
Correct color of the sparking plugs is light to brown.
Exchange of the sparking plugs is done after every 200 hours of operating at the regular revision.
The company Rotax prescribes to cover the screw with a paste improving the transfer of heat
between the body of the spark and the head of cylinder before assembling new sparking plugs. If
you do not have such agent, we recommend to let this work have in a expert company, or buy
sparking plugs which are already covered with such paste.
9.3.Refrigerating liquid
We use the same refrigerating liquid as for water refrigerated car engines and by the direction for
use, in the concentration of 50%.
(8 pages)
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