ROTAX912 / 914 / 915 iS / 916 iS Support

ROTAX Support Organized Around the Service Package or Symptom

Owner-operated ROTAX support for light-sport aircraft: five-year rubber package planning, baseline service, fuel delivery, ignition/electronics, cooling, vibration, installation review, and records control. Aircraft documents, engine family, installed configuration, and certificate privileges still control final scope.

View five-year rubber hose package

Genuine ROTAX parts focus.Where specified and appropriate, parts selection follows current ROTAX instructions, aircraft records, installed configuration, and work scope.

ROTAX 9 Series aircraft engine with green ROTAX covers

ROTAX Alert Service Bulletin Review

ASB_A-2026-001R00 — Inspection of the propeller gearbox for ROTAX 912, 914 and 912 i Series aircraft engines.

Bulletin date: 22 June 2026
Bulletin type: Alert Service Bulletin
Marked status: Mandatory
Review basis: Engine model, serial number, gearbox history, installed configuration, and records

Applicability must be checked against the engine model/type, engine serial number, propeller gearbox serial number, and whether the gearbox has already been serviced, repaired, rebuilt, or replaced.

For an applicability review, send:

Engine model/type, such as 912 ULS, 912 iS, or 914 UL
Engine serial number
Propeller gearbox serial number
Whether the gearbox has already been serviced, repaired, rebuilt, or replaced
Any logbook entry showing prior gearbox service, if available

Request ASB applicability review Verify credentials / contact

Final action is determined from current ROTAX publications, the aircraft records, engine configuration, and applicable maintenance authority. This website notice is an intake and applicability-review notice, not a substitute for the bulletin or maintenance instructions.

Major Planning Package

Five-Year Rubber Replacement: Why It is a Real Package, Not One Hose

A five-year rubber package is broader than one hose. Depending on the aircraft, it can involve fuel, oil, cooling, intake, carburetor, pump, belt, clamps, refill, synchronization, run, leak-check, and records.

Planning context: This is commonly a multi-thousand-dollar planning item and can approach or exceed about $4,000 on some installations depending on access, routing, parts, fluids, clamps, carburetor parts, fuel-pump requirements, and documentation needs. Final scope is determined after aircraft, engine, installation, and records review.

Common planning scope to verify against current ROTAX instructions, the aircraft maintenance manual, engine configuration, installed systems, and logbook history:

Carburetor venting hoses and diaphragms for both carburetors where applicable
Carburetor sockets and related O-rings where applicable
Cooling-system, fuel-system, and applicable lubrication-system rubber hoses
Air-intake connecting hose and fuel-pump venting hose where applicable
V-belt and expansion-tank rubber plate where applicable
Fuel-pump replacement where required by applicable time limits
Coolant refill, bleed, and leak check as applicable
Oil-system opening, refill, and check if oil hoses are disturbed
Carburetor synchronization after related rubber or carburetor work
Ground run, leak inspection, follow-up checks, and logbook documentation
Aircraft-side hoses or clamps required by the aircraft manual or installation records

Current instructions control. Every item must be verified for the engine family, installation, records, and work scope. Not every listed item applies to every aircraft.

View Rubber, Hose & Leak Support

Installed ROTAX engine compartment showing multiple rubber fuel, cooling, intake, and support hoses — A rubber package is planned around the complete installed ROTAX system, not one visible hose.

Common ROTAX Support Calls

Start with the Service Item, Package, Symptom, or Installation Question.

ROTAX support is routed by the closest need: routine service items, five-year rubber planning, carburetion, fuel delivery, temperature, ignition/electrical, gearbox/vibration, turbo/EMS context, or installation review. For model-family differences, use the ROTAX 9 Series guide.

100-Hour / Annual ROTAX Service Items

Oil, filter, plugs, gearbox context, carburetion, cooling, fuel, rubber-age, SB/SL/SI review, and records planning where applicable.

Baseline service and inspection-planning route 02

Five-Year Rubber Hose Package

Fuel, oil, coolant, intake rubber, clamps, leak-source tracing, refill, run, leak-check, synchronization, and records as applicable.

Major calendar-driven package 03

Fuel Delivery / Pressure

Fuel-pressure warnings, pumps, filters, routing, contamination, vapor symptoms, and carburetor/injector context.

912 / 914 Carb Sync or Rough Running

Carburetor balance, throttle-cable behavior, intake leaks, vibration, idle quality, and recent rubber work.

912 / 914 Excessive Mag Drop

RPM, left/right drop, temperature behavior, plugs, ignition-module context, wiring, and fuel condition.

Cooling / Coolant Leak / Oil Temperature

Coolant loss, CHT, oil temperature, trapped air, airflow, hose routing, and verified operating data.

Ignition / ECU / EMS / Electrical

Charging, grounds, connectors, sensor faults, ignition drops, EMS messages, and injected-engine context.

Gearbox / Propeller Vibration

RPM range, recent propeller work, balance, gearbox chatter, kickback, shock-load history, and vibration evidence.

914 / 915 iS / 916 iS Turbo or EMS Warning

Turbocharger, intercooler, exhaust, fuel pressure, sensor faults, engine-management warnings, and installation context.

Installation Review

Cooling layout, fuel routing, oil system, exhaust, sensors, wiring, service access, records, and aircraft-specific installation context.

What to Send First

Aircraft, Location, Symptom, and Recent Context.

A useful first request does not need to be a maintenance worksheet. Send the N-number or tail number, aircraft location, engine model if known, what changed, when it happens, and any clear fault message.

Records, photos, operating data, propeller details, airfield tools, or manufacturer coordination can be requested after intake when they are needed.

Good First-contact Examples

Five-year rubber package dueFuel pressure warning after heat soakRough running near idleExcessive mag dropCoolant or oil residue915 iS / 916 iS EMS warning

Installed ROTAX engine showing induction, wiring, hoses, surrounding systems, and service access

Focused System Review

The Engine is Reviewed as Part of the Aircraft System.

A reported value, a verified value, and a maintenance conclusion are not the same thing. Fuel, induction, cooling, oil, electrical, propeller, gearbox, records, and installation details can all affect the path.

No support activity is controlled until aircraft, location, symptom, and next action are captured. The goal is to move from uncertainty to a clear next step.