Rotax 582 oil injection, Rotax 618 and Rotax 503 oil injection system advisory.

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Advisory for oil injection system used on Rotax engines.

SERVICE Advisory

SUBJECT:     Oil Injection System

Attention:: All aircraft owners using Rotax 582LC

A number of pilots have reported a problem with the Rotax  582 LC  engine caused by oil starvation. Pilots flying with Rotax oil injection systems should note the following precautions:

1. The  inline oil filter should be positioned as near the oil tank and firewall as possible, away from the engine. This will greatly reduce vibration of the filter especially during start-up and shut-down, and reduce the likelihood of the oil line separating from the filter. Check the oil line and clamps during each pre-flight inspection for leaky connections, cracked lines, or loose clamps.

2. Before you run your engine, and any time you disconnect the oil line for any reason, vent the air from the oil line. Refer to the Rotax 582LC Operators Manual, pages 15 and 16, for complete instructions, and Fig. 2 on page 16, which shows the location of the vent plug.

As an added precaution, if the oil pump may have lost its prime for any reason, you should premix 2-cycle oil with the next tank full of fuel to ensure the engine is oiled in case the oil injection pump does not supply oil. Monitor the oil level in the oil tank to confirm that oil is being used.

3. The oil injection pump metering lever is actuated by a cable which is synchronized with the throttle. Make sure the lever alignment mark and oil pump marks are aligned.

4. Your pre-flight inspection should include a thorough inspection of the oil injection system. Check the ends of the oil injection control cable and of the throttle cables to see that the cables are not buckled and the sheath ends are secure in their sockets. Check the oil level in the tank and check the line and in-line filter. It is  strongly recommend that you  check the oil level in the tank and top the oil up  prior to each flight.

Summary - The Rotax 582LC is a very reliable engine and the oil injection pump may be the most reliable part of it.  To date I  have never had a problem with the pump, nor have had any customers report problems. 

I am aware of a number of cases of oil starvation because the pilot did not properly care for the supply system to the pump, the system was low on oil, or the system was not installed properly. 

ATTENTION: the system Rotax oil injection system  FROM the oil tank  TO the oil pump is GRAVITY feed. The tank MUST always be higher than the pump - at all angle of attack to properly work.

Rotax oil injection system on a Rotax 552 Bluehead aircraft engine.
Rotax oil injection system on a Rotax 552 Bluehead aircraft engine.

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