9.4.Service life of the plane, revisions and inspection of the engine
Use the liquid with anti corrosive ingredients prescribed for the block of engines from
aluminum base alloys. Do not use the refrigerating liquid in bigger concentration, it can be
detrimental for individual parts of the refrigerating system.
The refrigerating liquid density should be checked before the beginning of winter. Fill the
refrigerating liquid to the tank.
ATTENTION!
Do not open the tap of the refrigerating liquid tank in hot state. You can get burnt
easily.
While letting out the refrigerating liquid it is necessary to open the tap of the tank and screw
out the low tightening screw / with the impermeable ring / of the water pump. Then it is
necessary to release the low pipe of the cooler of the refrigerating liquid / which is located
lower than the engine / to let the old refrigerating liquid leak out, after letting it out, put the
pipe back on the cooler and tighten the buckle carefully. While exchanging the refrigerating
liquid it is also necessary to exchange the tamping under the low tightening ring of the water
pump. This screw is tightened by the moment of 10Nm.
9.4. Service life, revision and engine revisions
The producer prescribes the engine revisions after 25,50,100 and 200 hours with the
tolerance + - 10hours. These tolerances can not be added. The service after 100 hours is also
done at least once a year no matter how many flight hours had been reached.
The revision after 25 hours is performed on a new engine and on engine after general
overhaul.
The extension of prescribed revisions is introduced in the original handbook
´´Wartungshandbuch fur Rotax Motor Type 912 Serie ´´, which is a part of the delivery. It is a
shop handbook which is not indicated for instant user. There is no translation of this
handbook and its producer suppose that the prescribed maintenance of the engine will be
performed by the authorized technician.
The revision after 25 hours of operating is combined with the exchange of the oil and the oil
filter. The service of the engine after 50 hours is not recommended by the producer, with the
exception for the engine with the fuel AVGAS, when is also necessary to exchange the
oil after 50 hours of operating.
(8 pages)
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