Stihl 090 Help

[Levi of the North]

Hello all,

I've acquired a rough but running Stihl 090. Can't say I've ever been scared by a chainsaw before, but this thing is a little frightening. What a beast.

First issue is - it needs a chain, and I'm not sure what size to buy, or if these old saws take the same chains as new saws? Bar is an Oregon model 17830 - Google isn't helping me determine specifically what length this is. If someone could point me in the right direction, that would be great!

 

[Woodslasher]

Hello all,

I've acquired a rough but running Stihl 090. Can't say I've ever been scared by a chainsaw before, but this thing is a little frightening. What a beast.

First issue is - it needs a chain, and I'm not sure what size to buy, or if these old saws take the same chains as new saws? Bar is an Oregon model 17830 - Google isn't helping me determine specifically what length this is. If someone could point me in the right direction, that would be great!

I’d need to know the next set of numbers/ letters to help with the bar, it should go ####(letter)####(two letters). The chain should be either 3/8 or .404, the bar will determine the number of dl‘s, the pitch, gauge, etc.

 

[homemade]

The 090’s usually came with 1/2in pitch. Sometimes it came with 404.


Sent from my iPhone using Tapatalk

 

[Woodslasher]

The 090’s usually came with 1/2in pitch. Sometimes it came with 404.


Sent from my iPhone using Tapatalk

I thought only 090 G’s came with 1/2 inch, and plain 090’s came with .404?

 

[Levi of the North]

I’d need to know the next set of numbers/ letters to help with the bar, it should go ####(letter)####(two letters). The chain should be either 3/8 or .404, the bar will determine the number of dl‘s, the pitch, gauge, etc.

 

[Levi of the North]

Interesting story behind this old beast. It was originally purchased by a rural municipality to cut down elm trees when the Dutch Elm disease was sweeping through Ontario. Later on, safety regulations barred it from being used by govt. employees because it lacked a chain brake. So the previous owner was told to "Take it home, but if [the boss] asks where it went, just say you borrowed it and bring it back"

Apparently the boss never asked about it, because 40 years later, the guy who brought it home has passed it on to me.

 

[mojo jojo]

0.404, 0.63"

 

[Levi of the North]

0.404, 0.63"

Okay great. What bar length would this be then? Any idea what size/model chain will work with this setup? Google is giving me very little - hard to find info on these.

 

[Levi of the North]

Anybody? Super lost here. Not a lot of info online about these old beasts.

 

[farmer steve]

@Stihl 041S. Any help here Rob?

 

[Yukon Stihl]

Post a picture of your bar and drive, or buy a Large mount Stihl bar
look at your drive for gauge of chain.If you buy a new bar and chain just buy a new rim drive to match.

 

[Stihl 041S]

@Stihl 041S. Any help here Rob?

Hey Steve!!!
Not sure won the drive count.
heck. Call Oregon or Madsens.

stihl 41” is handy on that saw. And at $105 it will tell you the drive count!!!

 

[mojo jojo]

I have that kind of Oregon bar on my Contra. I think the first two digits represent bar length. So probably 25"

 

[mojo jojo]

This is my bar on my Contra. It is 53cm long or 21"....so your bar is 25" long.
Second two digits represent year of manufacture (63)... I think

My second Contra has original 25" Stihl bar with 84 link chain (42 teeth)

So you need a 84 link chain with 1,6mm Gauge and 0.404" step (Husqvarna H57 chain)