Stihl bar numbers

[Big feller]

Probably a dopey question about stihl bar numbers. I just found a bar with the last two digits 31 which I thought was the bar length in inches, but it is a 25 inch bar. Can anyone shed any light on this?

Thanks.

Big feller.

 

[Lakeside53]

Probably a dopey question about stihl bar numbers. I just found a bar with the last two digits 31 which I thought was the bar length in inches, but it is a 25 inch bar. Can anyone shed any light on this?

Thanks.

Big feller.

Last two digits have no "mathematical relationship" to the acual bar length... Send me the entire part number and I can tell you more about the bar. The First 4 digits set the major class of bar, the middle three are the manufuacting location or other special codes like paint shema etc, and the last for digits are the type/length/pitch and other info...

 

[Big feller]

Thanks for the offer of further information. Closer inspection of the Stihl bar and chain manual has revealed a check list of the last two digits and the corresponding length of bar. What is strange is that in a couple of instances there are two codes for a particular bar length. Odd that there has to be a code - unless there are bars that aren't an exact number of inches long...

Big feller

 

[musher]

I wouldn't expect it to be based on inches anyway. Since Stihl is a German company, I would expect it to be based on centimeters.