MS230 piston size

[Jase11]

Actually the Meteor web site is pretty useful, have a look here

 

Meteor Piston Gardening - Forestry Products Catalog

 

I've copied a couple sections from the catalogue, first one is only useful to see the column headings.

Second one you can compare the piston dimensions for the MS230 and MS250 pistons. The top of the piston to the gudgeon pin centreline (18) is the same in both cases. The gudgeon pin is the same. Only the diameter and length are different.

 

I'd ask the question to confirm but it looks to me like the MS250 would fit you cylinder spot on.

 

bmp01.

 

Thanks for posting the pages, I'll have a look.

[spudulike]

I reckon that piston is original, Stihl use that "S" with a box around it with the arrow on their pistons! Chances that your verniers may be reading low and there is a little wear.