Rotax 912 Series Service Manual

BRP-Rotax
Maintenance Manual
Effectivity 912/914 Series
Edition 1 / Rev. 0
72-00-00
page 1
May 01/2007
d02622
SECTION 72
ENGINE
1) Table of contents
SECTION 72
ENGINE
1) Table of contents .................................................................................... 72-00-00 / 1
2) Systems description .................................................................................72-00-00 / 5
2.1) Propeller gearbox ..........................................................................72-00-00 / 5
2.1.1) Gearbox version ...................................................................72-00-00 / 5
2.2) Hydraulic governor ........................................................................72-00-00 / 7
2.3) Vacuum pump ...............................................................................72-00-00 / 8
2.4) Connections for instrumentation ...................................................72-00-00 / 8
2.4.1) Mechanical rev counter and hourmeter (optional) ................72-00-00 / 8
3) Maintenance ...........................................................................................72-00-00 / 9
3.1) Removal of the fly wheel hub ........................................................72-00-00 / 9
3.2) Vacuum pump removal and inspection ........................................72-00-00 / 10
3.3) Governor removal and inspection ................................................72-00-00 / 10
3.4) Ignition housing removal and inspection ......................................72-00-00 / 11
3.5) Ignition housing fitting ..................................................................72-00-00 / 14
3.6) Sprag clutch ..................................................................................72-00-00 / 15
3.6.1) Sprag clutch removal...........................................................72-00-00 / 16
3.6.2) Sprag clutch dismantling......................................................72-00-00 / 17
3.6.3) Sprag clutch installation .......................................................72-00-00 / 18
3.7) Reduction gear for electric starter.................................................72-00-00 / 20
3.8) Rev counter drive .......................................................................... 72-00-00 / 21

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