Rotax 503

by Roger Ackerman in 2 Stroke Technical Questions 5 years ago

I don't know if i'm asking this in the correct place or not but I just bought a Rotax 503 tonight and trying to find info on it, year built and so on, thanks a lot for all your help Roger

serial: 3682426

Re: Rotax 503

by RotaxOwner Admin » 5 years ago

RotaxOwner Admin

59 1.59k 15.4k

3682426 was produced 03-Mar-1987

that's all the info the factory database has on it, nothing else is listed - not even the engine type code. Tuesday I can check the ancient North American Distributor paper archives, we might find a little more info on it there.

You can find all of the available manuals for it here: https://www.rotax-owner.com/en/support-topmenu/engine-manuals#2-stroke-engines

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Re: Rotax 503

by RotaxOwner Admin » 5 years ago

RotaxOwner Admin

59 1.59k 15.4k

A look through the North American Distributor's ancient paper records confirms that is is indeed a Model 503, (sold to a ROTAX dealer in the USA) but those records give no further technical data on the engine...

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Rotax 503

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