Rotax 912 i series Service Manual

BRP-Rotax
MAINTENANCE MANUAL LINE
Independent of subsequent following inspections are required:
Non compliance with fuel quality
Step
Procedure
1
Visual inspection of engine.
2 Empty the fuel system according to the instructions of aircraft manufacturer.
3
Flush fuel system.
4
Replace fuel filter
5
Check differential pressure.
6 Engine test run.
SMOOTH PERFORMANCE OF THE ENGINE
General note
m WARNING
Risk of electric shock!
Ignition “OFF” and system grounded! Disconnect negative terminal of battery.
Inspection Inspection of smooth performance of the engine should be performed at a temperature
about 0 °C to 60 °C (140 °F).
Engine runs sluggishly
Step
Procedure
1 Remove spark plug connector and remove 1 spark plug from each cylinder.
2 Torque must be determined with a suitable jig.
To do this, determine the maximum occurring torque on the propeller shaft
necessary to move the whole crank drive.
The torque must be max. 150 Nm (111 ft.lb).
If the maximum torque is exceeded, perform the following inspections:
• Carry out detailed inspection of the affected gearbox components
• Carry out detailed inspection of crank drive
05–50–00
Page 30
September 01/2018
Effectivity: 912 i Series
Edition 2/Rev. 0

Rotax 912 i series Specifications

General

Number of Cylinders	4
Max Power	100 hp (73.5 kW)
Max Power Output RPM	5800 rpm
Ignition System	Dual electronic ignition
Oil System	Dry sump, forced lubrication with separate oil tank
Reduction Gear Ratio	2.43:1
TBO	2000 hours
Engine Type	4-stroke, horizontally opposed
Displacement	1352 cm³
Bore x Stroke	84 mm x 61 mm
Max Torque	128 Nm
Fuel Type	Avgas 100LL or unleaded automotive gasoline
Fuel System	Electronic fuel injection
Cooling System	Liquid/air-cooled