Serial number for model number

[Martin]

Hi there, i have got hold of 3 stihl 4 mix engines and trying to work out what models they are.
Can anyone identify them from serial numbers?
502025097
282143035
278510549
Thanks Martin

 

[Mr.Navy]

1) = BT130
2) = FS100
3) = FS100R

 

[Wildwilly]

1) = BT130
2) = FS100
3) = FS100R

Mr. Navy,
I bought a Stihl ms 290 on Facebook but I believe it is a MS 261, MS 271, or MS 291 because the parts number is 1141. The serial number is 503550148. Was wondering is anyone has thoughts or answers?