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ROTAX 912 iSc Sport

Engine 912 iSc

4- stroke, 4-cylinder liquid/air cooled engine with opposed cylinders, dry sump forced lubrication with separate oil tank, automatic adjustment by hydraulic valve tappets, redundant electronic fuel injection system, engine management system, integrated reduction gearbox.

certified acc. to CS-E

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  1. Data sheets
  2. Brochure
  3. Type Certiticate
  4. Certificate Validation

Technical data

Version Performance Torque Max RPM
  kW ft. lb. 1/min Nm ft. lb. l/min l/min
912 ULS 73.5 100 5800* 121 89 5800 5800
Bore Stroke Displacement Fuel
84 mm 3.31 in 61 mm 2.4 in 1352 cm³ 82.6 cu in. min. MON 85 RON 95**
min. AKI 91**

* - max 5 min.
** - leaded, unleaded, AVGAS 100 LL or Ethanol 10
see Service Instruction SI-912-016/914-019 „Selection of suitable operating fluids”, current issue

WEIGHT kg lb
engine with gearbox i = 2.43 63.6 140.2
overload clutch 1.7 3.7
radiator 1.0 2.2
oil radiator 0.5 1.1
2 air filters 0.3 0.66
airbox 1.3 2.86
exhaust system 4.0 8.8
air guide baffle 0.8 1.76
engine suspension frame 2.0 4.4
vacuum pump 0.8 1.8
hydraulic governor 2.7 5.9
external alternator 3.0 6.6

Standard configuration

version iS 2
(for fixed pitch propeller)

  1. integrated reduction gearbox i = 2,43
  2. overload clutch for reduction gearbox
  3. engine management system
  4. electronic fuel injection
  5. electric starter and relay
  6. oil filter, oil tank, without tubes
  7. regulator-rectifier
  8. 2 high flow fuel pumps set
  9. engine truss
  10. airbox

version iS 3
(for „constant speed” propellers, controlled hydraulically)

Configuration same as for version 2 additionally equipped with:

  1. drive for hydraulic governor and cover for sealing of governor flange

Download - technical instructions

Here you can free download current issues of main technical instructions. For other technical publications see DOCUMENTATION.

The documents are available and may be downloaded in Adobe pdf format. If you encounter difficulties with the pdf-files, make sure to have the latest updates installed for your version of Adobe® Reader®.

  1. Installation Manual
  2. Operators Manual
  3. Maintenance Manual (line)
ROTAX 912 iSc Sport