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Two-cycle, two-cylinder rotary valve engine, oil-in-fuel lubrication, liquid-cooled.
Details on cylinder material, bore, stroke, compression ratio, and displacement.
Information on ignition unit, timing, spark plug, carburetor, and fuel pump.
Specifies required gasoline octane and two-stroke oil mixing ratio.
Provides performance figures like horsepower and RPM for different versions.
Highlights the engine's rugged construction, reliability, and durability.
Emphasizes proper maintenance and care for trouble-free service.
ROTAX reserves the right to make design modifications without prior notice.
Specifies the use of standard grade gasoline and Super 2-stroke oil.
Mandates a specific fuel to oil mixing ratio of 50:1.
Details consequences of too much or too little oil, such as deposits or seizure.
Instructions for performing engine break-in in the airframe following a specific RPM graph.
Requires idle speed adjustment and short take-offs after the break-in procedure.
Procedure for installing the rotary valve disc by aligning piston to TDC and disc edges to marks.
Notes the asymmetrical nature of the disc, requiring testing for best fit.
Describes the BING carburetor and its adjustment via jets and screws.
Details how to adjust idle RPM using the carburetor piston adjustment screw.
Emphasizes correct angular position for equal mixture distribution to cylinders.
Instructions for starting a cold engine using choke and throttle management.
Caution against prolonged choke use to avoid fuel flooding and subsequent steps.
Guide to checking ignition wiring and spark plug condition for starting issues.
Explains how spark plug appearance indicates correct or incorrect engine settings.
Recommends regular cleaning of spark plugs to prevent engine troubles.
Describes the BOSCH magneto generator (12V 140W) powering the ignition.
Details the importance of clean contact breakers for ignition reliability.
Method for checking ignition timing using crankcase and magneto housing marks.
Step-by-step guide to adjusting ignition timing via fixing screw and groove.
Specifies the required opening gap for breaker contacts during adjustment.
Details how to measure the pole shoe break-away gap with flywheel alignment.
Explains checking flywheel taper and key if the gap is out of tolerance.
Guidance on correctly connecting ignition generator and mass cables to ignition coils.
Explains how to disconnect ignition by connecting shorting cables to ground.
Reduces spark energy and glowing of spark plug deposits to prevent piston failures.
Details the wiring connections for mounting the ignition damping box.
Procedures for checking damping box functionality and potential defects.
Generator provides 12V 140W AC for lights and other AC-powered devices.
Use a voltage regulator or load to prevent voltage from exceeding permissible levels.
A rectifier-regulator is required for operating DC devices like batteries.
Instructions on how to pull the starter rope and return the grip to its position.
Warning against operating the engine if the rewind starter is defective.
Details on removing specific parts to access and replace the starter rope.
Lists the tools required for changing the starter rope, such as snap ring tongs.
Procedure for inserting the new rope into the sheave and reassembling components.
Cautionary note about not removing the spring container to prevent injuries.
Recommends decarbonizing the combustion chamber after approximately 50 hours of use.
Instructions involve removing the cylinder head and scraping carbon deposits.
Specifies torque values for M8 cylinder head nuts in Nm and in.lb.
Provides torque specifications for M6 and M8 crankcase screws.
Details the torque requirement for the M22x1.5 magneto housing nut.
Begins troubleshooting by checking fuel cock and fuel delivery to carburetor and engine.
Addresses carburetor flooding, wet engine issues, and spark plug protector faults.
Focuses on diagnosing issues related to spark presence, gap, and plug condition.
Covers common causes of difficult starting like ignition timing and fuel delivery.
Lists potential causes for 'four-stroking' at high RPM, including air cleaner and oil mix.
Identifies reasons for carburetor 'spitting' such as fuel filter blockage or needle position.
Explains causes of engine knocking, including timing, fuel supply, and wear.
Addresses incorrect idle adjustment, timing, spark plug, and cylinder sealing issues.
Describes how cooling liquid is supplied by a pump through cylinders to the radiator.
Specifies using water in warm periods and anti-freeze mixture in frost periods.
Recommends average temperature and actions for overheating.
Advises covering the cap with a cloth before opening to prevent scalding.
Explains the 90° gear mechanism in the crankcase for valve and pump operation.
Specifies using 2-stroke motor-oil and checking oil level and connections.
Recommends investigating leaks if oil consumption exceeds 1 c.c./hour.
Instructions for installing an alignment bushing on the PTO taper for specific engines.
Emphasizes cleaning contact surfaces and threads and using Loctite adhesives.
Details fitting the O-ring and flange plate, including torque specifications for M10 bolts.
Guidance on cleaning and degreasing the engine PTO shaft and associated threads.
Procedure for fixing the sprocket using a bolt, washer, lock washer, and Loctite.
Instructions for bolting the gear assembly using studs, washers, and O-rings.
Details on filling the gearbox with SAE 90-API-GL 3 oil to the correct level.
Outlines checks every 10 hours and oil changes every 100 hours or 2 years.
Highlights safety warnings and advises consulting authorized workshops for doubts.
Distinguishes between low and high performance rotary valves based on angles L and Beta.
Step-by-step instructions for correctly installing the rotary valve disc.
Instructions for marking the crankcase relative to the magneto side inlet port.
General| Displacement | 462 cc |
|---|---|
| Bore | 72 mm |
| Cooling System | Liquid-cooled |
| Power Output | 52 hp |
| Fuel System | Carburetor |
| Oil System | Oil injection |
| Type | Two-stroke |
