Rotax 912 Series Service Manual

Effectivity 912/914 Series
Edition 1 / Rev. 0
75-00-00
page 1
May 01/2007
d02625
BRP-Rotax
Maintenance Manual
SECTION 75
COOLING SYSTEM
1) Table of contents
SECTION 75
COOLING SYSTEM
1) Table of contents .................................................................................... 75-00-00 / 1
2) Systems description .................................................................................75-00-00 / 3
2.1) Cooling system..............................................................................75-00-00 / 3
2.2) Connections for instrumentation ...................................................75-00-00 / 4
2.2.1) Cylinder head temperature display ...................................75-00-00 / 4
3) Maintenance ...........................................................................................75-00-00 / 5
3.1) Water pump removal and inspection............................................75-00-00 / 6
3.2) Water pump housing - dismantling and inspection ........................75-00-00 / 7
3.3) Fly wheel hub removal ................................................................. 75-00-00 / 9
3.4) Ignition housing removal .............................................................. 75-00-00 / 9
3.5) Water pump shaft - removal .........................................................75-00-00 / 9
3.6) Rotary seal - removal....................................................................75-00-00 / 10
3.7) Rotary seal - installation............................................................... 75-00-00 / 10
3.8) Axial position of the water pump shaft ..........................................75-00-00 / 12
3.9) Ignition housing assembly ............................................................ 75-00-00 / 13
3.10) Water pump housing — reassembly ............................................. 75-00-00 / 13
3.11) Coolant hoses fitting ....................................................................75-00-00 / 14
3.12) Spring band hose clamps ..............................................................75-00-00 / 14
3.13) Radiator (optional 912/ 914 Series) ..............................................75-00-00 / 14
3.14) Cooling air duct (optional 912/ 914 Series) ...................................75-00-00 / 14
3.15) Expansion tank..............................................................................75-00-00 / 15
3.16) Overflow bottle ..............................................................................75-00-00 / 15
3.17) Temperature measurement system ..............................................75-00-00 / 15
3.17.1) Cylinder head temperature sensor ...................................75-00-00 / 15
4) Wear limits ..............................................................................................75-00-00 / 19

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