Rotax 912-UL User Manual

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page 9 - 3
Jan. 01/2007
Effectivity: 912 Serie
OM Edition 1 / Rev. 0
BRP-Rotax
9.3) Lubrication system
See fig. 6.
The ROTAX 912 engine is provided with a dry sump forced lubrication
system with a main oil pump with integrated pressure regulator (1) and oil
pressure sensor (2).
◆ NOTE: The oil pump is driven by the camshaft.
The oil pump (3) sucks the motor oil from the oil tank (4) via the oil cooler (5)
and forces it through the oil filter (6) to the points of lubrication in the engine.
The surplus oil emerging from the points of lubrication accumulates on the
bottom of crankcase and is forced back to the oil tank by the blow-by gases.
◆ NOTE: The oil circuit is vented via bore (7) on the oil tank.
◆ NOTE: The oil temperature sensor (8) for reading of the oil inlet
temperature is located on the oil pump housing.
Lubricants, see Chapter 10.2.3).
8
3
2
fig. 6
00523
7
5
4
2
3
8
1
6

Rotax 912-UL Specifications

General

Displacement	1211 cc
Bore x Stroke	79.5 mm x 61 mm
Compression Ratio	9.0:1
TBO (Time Between Overhaul)	2000 hours
Engine Type	4-cylinder, 4-stroke
Power Output	80 hp
Cooling System	Liquid/air-cooled
Fuel Type	Avgas 100LL or unleaded automotive gasoline
Oil Capacity	3 liters
Fuel System	2 carburetors
Oil System	Dry sump forced lubrication with separate oil tank
Reduction Gear Ratio	2.43:1
Max Continuous Power	75 hp (56 kW)