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Rotax 503 Manufacture Date

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5 months 3 weeks ago #19279 by admin
Replied by admin on topic Rotax 503 Manufacture Date
5441467 was produced 02-Oct-2001

Engine Type: ROTAX 503 UL FAN
Model Number: 305030010
The following user(s) said Thank You: daryl_kings

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3 months 3 weeks ago #19808 by timmyroussel
Replied by timmyroussel on topic Rotax 503 Manufacture Date
Hi I have a rotax 503 the serial number is 3715796 can u tell me year model and other info. I'm trying to upgrade to cdi from points and I am having problems

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3 months 3 weeks ago #19812 by admin
Replied by admin on topic Rotax 503 Manufacture Date
The factory database indicates that 3715796 was produced 17-Sept-1987.
But there is no additional info about the model number or build options.

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1 month 1 week ago #20475 by timmyroussel
Replied by timmyroussel on topic Rotax 503 Manufacture Date
Thank you very much

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1 month 3 days ago #20528 by WV Blaster
Replied by WV Blaster on topic Rotax 503 Manufacture Date
I just purchased a Kolb Twinstar mk 2 with a zero time 503. Would you be able to tell me how old the motor is? Serial number is 3609552

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1 month 3 days ago #20529 by WV Blaster
Replied by WV Blaster on topic Rotax 503 Manufacture Date
I just bought a Kolb Twinstar that had no logbook or paperwork with it. Can anyone tell me when the motor was manufactured? I was told it is a zero time motor. Serial number is 3609552

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1 month 3 days ago #20530 by WV Blaster
Replied by WV Blaster on topic Rotax 503 Manufacture Date
Can you help me with a date for this one? serial # 3609552

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1 month 3 days ago #20535 by WV Blaster
Replied by WV Blaster on topic Rotax 503 Manufacture Date
I would like a date of manufacture for my 503, serial number 3609552

Thanks Blaster

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1 month 2 days ago - 1 month 2 days ago #20539 by admin
Replied by admin on topic Rotax 503 Manufacture Date
3609552 was produced 22-May-1986
( no further information is found in the factory database)

I was able to confirm (through the North American distributor's paper archives) that this 503 engine was originally sold by the ROTAX dealer LEAF ( www.leadingedgeairfoils.com/ ) in July 1986... perhaps you can contact them for more information (bit of a long shot, I know...) :whistle:
Last edit: 1 month 2 days ago by admin.
The following user(s) said Thank You: WV Blaster

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