Stihl MS 251

[H and J]

Looked at AN MS251 and noticed only one stud holding the side casing on. On line and old Stihl catalogues going back to 2006 and always showing 2 studs.

Looked genuine otherwise, but could it be a copy.....or was it a one off model in a certain year 🤔

 

Thoughts and opinions would be appreciated. 

 

 

[rapalaman]

Pictures will help 👍

[GarethM]

251 are single stud, had a few and they've all been single stud and think that was back in 2003

Edited January 13 by GarethM

[Stubby]

I don't really know and don't really care to be honest . Hope you sort out your mystery 🙂

13 minutes ago, H and J said:

Looked at AN MS251 and noticed only one stud holding the side casing on. On line and old Stihl catalogues going back to 2006 and always showing 2 studs.

Looked genuine otherwise, but could it be a copy.....or was it a one off model in a certain year 🤔

 

Thoughts and opinions would be appreciated. 

 

 

 

[peatff]

Stihl website picture

[Stere]

1 stud seems something re- designed more shit on purpose to make then less good that the 2 stud norm-  more likely to break..?

 

 

[peatff]

On 14/01/2025 at 10:22, Stere said:

1 stud seems something re- designed more shit on purpose to make then less good that the 2 stud norm-  more likely to break..?

 

 

I have one stud and two stud saws and neither have broken in all the years I've been using them. If you don't handle them like a gorilla and just use the necessary force to tighten them there is no problem.

[Dan Maynard]

Toppers are all 1 stud, it's not so uncommon in small saws. Two studs is enough for a 3 foot bar, one should be ok on a 251.

[Mark_Skyland]

Its worth noting on these machines that have a plastic crankcase dont overtighten the bolt, it can pull the stud out of the crankcase. Ive seen it happen on quite a few of the little echo 2511's and a couple of the  170/171 stihls.