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Rotax 912-UL User Manual

Rotax 912-UL
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page 4 - 3
Jan. 01/2007
Effectivity: 912 Serie
OM Edition 1 / Rev. 0
BRP-Rotax
Before flight, ensure that all engine controls are operative. Make sure all
controls can be easily reached in case of an emergency.
Unless in a run up area, never run the engine with the propeller turning
while on the ground. Do not operate engine if bystanders are close.
In the interest of safety, the aircraft must not be left unattended while the
engine is running.
Keep an engine log and respect engine and aircraft maintenance sched-
ules. Keep the engine in top operating condition at all times. Do not operate
any aircraft which is not properly maintained or has engine operating
irregularities which have not been corrected.
Since special tools and equipment may be required, engine servicing
should only be performed by an authorized ROTAX
engine dealer or a
qualified trained mechanic approved by the local airworthiness authority.
To eliminate possible injury or damage, ensure any loose equipment or
tools are properly secured before starting the engine.
When in storage protect the engine and fuel system from contamination
and exposure.
Certain areas, altitudes and conditions present greater risk than others.
The engine may require carburetor recalibration or humidity or dust/sand
preventative equipment, or additional maintenance may be required.
Consult your aircraft dealer or manufacturer and obtain the necessary
information, especially before flying in new areas.
Never operate the engine and gearbox without sufficient quantities of
lubricating oil.
Periodically verify level of coolant.
Never exceed maximum rated r.p.m. Allow the engine to cool at idle for
several minutes before turning off the engine.
This engine may be equipped with an Airborne vacuum pump. The safety
warning accompanying the vacuum pump must be given to the owner/
operator of the aircraft into which the vacuum pump is installed.

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Rotax 912-UL Specifications

General IconGeneral
Displacement1211 cc
Bore x Stroke79.5 mm x 61 mm
Compression Ratio9.0:1
TBO (Time Between Overhaul)2000 hours
Engine Type4-cylinder, 4-stroke
Power Output80 hp
Cooling SystemLiquid/air-cooled
Fuel TypeAvgas 100LL or unleaded automotive gasoline
Oil Capacity3 liters
Fuel System2 carburetors
Oil SystemDry sump forced lubrication with separate oil tank
Reduction Gear Ratio2.43:1
Max Continuous Power75 hp (56 kW)

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