Hi Tyler,
Yes definitely looks like a first model from the low number , now I remember seeing your snipper about 3 years ago on ODK.
https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/104511/msaa-craftsman-line-trimmer.htmlI had completely forgotten about the Echo float needle carby snipper.
I'm thinking your Echo trimmer with the float needle carby is a late seventies SRM 140D (number 354) , there is a SRM 140DA but the
muffler is different.(has the Walbro Carby)
If I see an early 140 I will collect it as they must be getting rare these days ,one old snipper I paid for was the MSAA but was only $10.
The good thing about these small cc trimmers is they rev well and are smooth running and they are quieter than larger motors.
Kioritz first started trading the Echo brand name in 1978
Cheers
Max.