Stihl 661 serial number

[motoOzarks]

Is there a place to look up serial numbers?

What can you tell me about a 661 with serial number 177394843?

 

[motoOzarks]

What year of production would include a few production changes that are desirable?

Meaning did they make changes after the first few years that would be to a persons advantage if shopping for one.

 

[motoOzarks]

 

[motoOzarks]

https://opeforum.com/threads/when-was-stihl-ms-661-last-updated-since.13094/

According to this thread
From serial number 1 83 981 428, the MS 661 C-M has m-tronic version 3.

that's not what I was hoping for

 

[motoOzarks]

https://s3.amazonaws.com/com.bryane...ferenceguide-finalweb_12-14-18-compressed.pdf

2019 technical reference guide

 

[ElevatorGuy]

You don’t want the latest version of m tronic?

 

[motoOzarks]

You don’t want the latest version of m tronic?

yes I would prefer the latest version

were early 661 not mtronic?

or are non mtronic 661 only non US models?

 

[motoOzarks]

https://opeforum.com/threads/stihl-661-conversion-from-m-tronic-to-non-m-tronic-unlimited.17687/

 

[ElevatorGuy]

Never mind, went back and looked at the first serial number you posted.

 

[motoOzarks]

 Generation 3.0 Software is on Control Modules  Intro Gen 3 Control Module: 1144 400 4703 introduced with black valve (April 2018)  Can install white valve with 1144 400 4703 module with no issues  Current Gen 3 Control Module: 1144 400 4704 introduced with white valve (July 2018)

In production >183 981 428.  See TI 61.2017.  Identifying mark is “M3.0” on rear handle label.  However, due to a problem in production, old labels (without the “M3.0”) were applied for initial 3 weeks of production.

Replace failed BLACK valve with WHITE valve (0000 120 5104).  Additionally,  Install new control module with Gen 3.0 software (1144 400 4703 or 4704).  And install new orange mesh fuel filter (0000 350 3518). Finer filtration.  Calibrate the unit.