Rotax 912 / 914 Service, Repairs & Info!


AeroFix Aviation offer a mobile maintenance service with a fully equipped mobile workshop AND a fully equipped static workshop (by prior arrangement).

All our fixed-price scheduled servicing work is completed along with a detailed Workshop Report Sheet of the work carried out if requested.

Rotax 912 / 914 Engine Service - What's included? ...

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Rotax 912 / 914 Gearbox Servicing ...

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Rotax 912 / 914 Engine Shock Load Test / Prop Strike Inspection ...

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Rotax 912 / 914 Carburetor Clean / Overhaul Service ...

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Adhoc Rotax 912 / 914 Maintenance, Servicing, Repairs ...

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Rotax 912UL (80BHP) Technical Specifications ...

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Rotax 912ULS (100BHP) Technical Specifications ...

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Rotax 914 (115BHP) Technical Specifications ...

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Rotax 912 / 914 Problems / Troubleshooting ...

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Rotax 912 / 914 Engine Service - What's included ...

(See table below for pricing)


25 Hour Service (Initial 25 Hours Only)

  • Visual Check of Electrical System
  • Visual Check of Coolant System
  • Visual Check of Fuel System
  • Visual Check of Exhaust System
  • Visual Check of Leakage Bore
  • Measurement of Friction Torque
  • Check of waste gate operation (914 only)
  • Check of TCU - Turbo Control Unit operation (914 only)
  • Service Bulletin Check
  • Oil Change
  • Oil Filter Replacement & Dissection
  • Magnetic plug Inspection
  • Air Filter Inspection
  • Inspection & Cleaning of Plugs
  • Pneumatic Balancing of Carbs
  • Adjustment of idle speed
  • Check Fuel Filter

100 Hour Service - Everything in a 25 Hour Service plus ...

  • Inspect / Clean Spark Plugs
  • Inspection of Carb Rubbers
  • Replacement of Fuel Filter

200 Hour Service - Everything in a 100 Hour Service plus ...

  • Replacement of Spark Plugs
  • Remove, Strip and Inspect Carbs
  • Differential Compression Test

PRICING GUIDE for Fixed-price Rotax 912 Engine Servicing

Type 25 Hour 100 Hour 200 Hour
All 912UL/ULS Flexwings £180.00 £180.00 £210.00
All 912UL/ULS Fixed Wing £190.00 £190.00 £230.00

Please note that prices listed for Fixed-Price Rotax 912 Engine Servicing include labour and consumables (engine oil, oil filter, drain plug gasket ring, crankcase locking pin gasket ring, fuel filter, spark plugs etc where applicable) as specified by ROTAX Line Maintenance manual. All prices are inclusive.

Adhoc Rotax 912 / 914 Maintanance and Servicing ...

As well as offering the above Rotax 912 Servicing as part of your recommended routine maintenance plan we are available for other more adhoc maintenance / servicing work e.g. miscellaneous troubleshooting / fault finding work etc.

As with our fixed-price servicing work all work is completed along with a detailed Workshop Report Sheet of the work carried out if requested. We only use Genuine Rotax spares sourced from SkyDrive or Conair Sports.

Rotax 912 UL (80BHP) Technical Specifications

General Features
  • 4-stroke engine specially developed for recreational aircraft. Also exists in certified versions: Rotax 912 A, Rotax 912 F.
  • 4 horizontally opposed cylinders, "boxer" configuration
  • Free air cooled cylinders, liquid cooled cylinder heads with integrated pump and expansion tank
  • Dry sump forced lubrication with integrated pump and separate oil tank
  • 8 valves, automatic adjustment by hydraulic valve tappet
  • Dual Capacitor Discharge Ignition (DCDI) with RFI noise suppression
  • Two Bing Constant Depression (CD) carburetors
  • Mechanically driven diaphragm fuel pump
  • Integrated electric starter
  • Integrated reduction gearbox, ratio of 2.27:1 or 2.43:1 with optional slipper clutch
  • Various liquid and oil radiators available
  • Many option available such as: Vacuum pump, external alternator, hydraulic propeller governor
  • Operates on automotive fuel with a minimum octane rating of 87
  • Time Between Overhauls (TBO): ranges between 600 - 2000 hours

The table below includes data for the Rotax 912 UL.

Maximum Power (5 mins): 81HP / 59.6KW @ 5800 RPM
Maximum Power (sustained) 79HP / 58.9KW @ 5500 RPM
Maximum Torque 75.9ft-lb / 103NM @ 4800 RPM
Bore 3.13" / 79.5mm
Stroke 2.40" / 61.0mm
Displacement: 73.91cu.in. / 1211.2cm�
Compression ratio: 9.0:1
IGNITION SYSTEM: Breakerless Ducati DCDI
(Dual capacitor discharge ignition)
with magneto generator.

Rotax 912 ULS Technical Specifications

General Features
  • 4-stroke engine specially developed for recreational aircraft. Also exists in a certified version: Rotax 912 S
  • 4 horizontally opposed cylinders, "boxer" configuration
  • Free air cooled cylinders, liquid cooled cylinder heads with integrated pump and expansion tank
  • Dry sump forced lubrication with integrated pump and separate oil tank
  • 8 valves, automatic adjustment by hydraulic valve tappet
  • Dual Capacitor Discharge Ignition (DCDI) with RFI noise suppression
  • Two Bing Constant Depression (CD) carburetors
  • Mechanically driven diaphragm fuel pump
  • Integrated heavy duty electric starter
  • Integrated reduction gearbox, ratio of 2.43:1 with slipper clutch as standard
  • Various liquid and oil radiators available
  • Many option available such as: Vacuum pump, external alternator, hydraulic propeller governor
  • Operates on automotive fuel with a minimum octane rating of 91
  • Time Between Overhauls (TBO): upto 2000 hours

The table below includes data for the Rotax 912 ULS.

Maximum Power (5 mins): 100HP / 73.5KW @ 5800 RPM
Maximum Power (sustained) 95HP / 69.0KW @ 5500 RPM
Maximum Torque 94ft-lb / 128NM @ 5100 RPM
Bore 3.31" / 84mm
Stroke 2.40" / 61.0mm
Displacement: 82.6cu.in. / 1352cm�
Compression ratio: 10.5:1
IGNITION SYSTEM: Breakerless Ducati DCDI
(Dual capacitor discharge ignition)
with magneto generator.

Rotax 914 Technical Specifications

General Features
  • 4-stroke turbocharged engine specially developed for recreational aircraft. Also exists in a certified version: Rotax 914 F
  • 4 horizontally opposed cylinders, "boxer" configuration
  • Free air cooled cylinders, liquid cooled cylinder heads with integrated pump and expansion tank
  • Dry sump forced lubrication with integrated pump and separate oil tank
  • 8 valves, automatic adjustment by hydraulic valve tappet
  • Dual Capacitor Discharge Ignition (DCDI) with RFI noise suppression
  • Two Bing Constant Depression (CD) carburetors
  • Two electric fuel pumps
  • Integrated heavy duty electric starter
  • Integrated reduction gearbox, ratio of 2.43:1 with optional slipper clutch
  • Various liquid and oil radiators available
  • Many option available such as: Vacuum pump, external alternator, hydraulic propeller governor
  • Operates on automotive fuel with a minimum octane rating of 91
  • Time Between Overhauls (TBO): upto 1200 hours

The table below includes data for the Rotax 914 UL.

Maximum Power (5 mins): 115HP / 84.5KW @ 5800 RPM
Maximum Power (sustained) 100HP / 73.5KW @ 5500 RPM
Maximum Torque 106ft-lb / 144NM @ 4900 RPM
Bore 3.13" / 79.5mm
Stroke 2.40" / 61.0mm
Displacement: 73.91cu.in. / 1211.2cm�
Compression ratio: 9.0:1
IGNITION SYSTEM: Breakerless Ducati DCDI
(Dual capacitor discharge ignition)
with magneto generator.

Adhoc Rotax 912 / 914 Maintenance,Servicing,Repairs ...

As well as offering the above Rotax 912 / 914 Servicing as part of your recommended routine maintenance plan we are available for other more adhoc maintenance / servicing work e.g. miscellaneous troubleshooting / fault finding work etc.

Rotax 2-Stroke Engine Strip, Inspect and Rebuild / Repair.

We offer a full Strip, Inspect and Rebuild / Repair service on Rotax 2-stroke engines (including gearbox) in the event that your Rotax 912 / 914 may have been damaged e.g. suffered a hot or cold siezure or involved in an incident. We are only able to reasonably accurately estimate the work and parts involved (and therefore the cost) of the rebuild once the engine has been striped and inspected as an initial step. For crankshaft changes / complete rebuilds our preference will always be to do this work in our workshop facility rather than on-site if possible. This is because if if the strip down indicates that unexpected parts are required then we would prefer that your engine were safely on our workshop bench rather than being left at your airfield in a dissassembled state exposed to the elements. You can either bring the engine to us or we can come and remove it from your aircraft / collect it to bring it back to the workshop. If your engine is fitted to a flexwing trike or other road-transportable aircraft then you are welcome to trailer it to us thus saving you the cost of us coming to collect it. Please phone to discuss.

Our Hours:

The mobile is normally answered during the following times ...

Monday - Friday: 8:30 am - 7:30pm

Saturday: 7:30 am - 1.00pm

Please leave a message as we may be unable to answer. We will call you back!

AeroFix Aviation
Higher Wilson Fold Farm
High Rid Lane
Bolton
Lancashire
United Kingdom
BL6 4LH
Telephone: 07779 147 229
E-mail:
Enquiries@AeroFixAviation.co.uk