Rotax 912 Series Installation Manual

d04927.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2/Rev. 0
79-00-00
page 6
August 01/2012
Graphic
Measurement of crankcase pressure
Fig. 2 09161
Magnetic plug NOTE: The thread for the magnetic plug (2) must be M12x1.5 (met-
ric) and M8 for the crankshaft locking screw (3) (use always
new gasket).
Pressure values The pressure in the crankcase at (full throttle) must not exceed the prevail-
ing ambient pressure by more than 0.45 bar (6.53 psi) at 90 °C (194 °F) oil
temperature.
If crankcase pressure and measuring pressure of the vacuum readings
and all operational data (flight attitude, temperatures, etc.) are within the
specified limits, then it can be assumed that the oil circuit is working cor-
rectly.
Part Function
1 Pressure indicator
2 Magnetic plug
3 Crankshaft locking screw
3
2
1

WARNUNG

WARNING
Non-compliance can result in serious injuries or death!
If the readings exceed the pressure limits, then the
flow resistance in the oil return line from oil sump to oil
tank is too high in the current engine installation (con-
tamination, restrictions of cross-section, etc.). This
condition is unsafe and must be rectified immediately.

Rotax 912 Series Specifications

General

Redline	5800 rpm
TBO	2000 hours
Displacement	1211 cc
Bore	79.5 mm
Stroke	61 mm
Power Output	80 hp (59.6 kW)
Compression Ratio	9.0:1
Fuel Type	Avgas 100LL
Ignition System	Dual electronic ignition
Fuel System	Fuel Injected
Oil System	Dry sump
Engine Type	4-cylinder, horizontally opposed, 4-stroke